Category: Avionics

UAV Navigation-Grupo Oesía Enhances its VNS01 Visual Navigation System with Terrain Referenced Navigation (TRN) and Satellite Map Matching for Precision GNSS-Denied Operations

● The latest version of the VNS01 Visual Navigation System enables UAVs to maintain navigation accuracy in GNSS-denied environments, constraining positioning errors to approximately 30 meters even during prolonged missions over previously unflown routes.

– UAV Navigation–Grupo Oesía has announced major software enhancements to its VNS01 Visual Navigation System, introducing advanced Terrain Referenced Navigation (TRN) and Satellite Map Matching algorithms to improve navigation accuracy during operations in GNSS-denied environments and over previously unflown routes. Available through a software update, these enhancements further strengthen the company’s position in resilient navigation technologies for autonomous aerial platforms.

Already deployed as a resilient navigation solution for GNSS-denied operations, the VNS01 now improves its navigation performance through the incorporation of Terrain Referenced Navigation (TRN) and Satellite Map Matching. These new technologies provide additional sources of absolute positioning in previously unexplored terrain, helping maintain accurate navigation during extended GNSS outages.

Satellite Map Matching uses preloaded satellite imagery as a navigation reference. By correlating onboard camera images with geographical features such as roads, rivers and coastlines, the system generates absolute position corrections that compensate for inertial drift and improve navigation accuracy.

To complement this capability, Terrain Referenced Navigation provides an additional source of positioning by correlating altitude measurements collected in flight with preloaded Digital Elevation Models (DEMs). This allows the system to estimate the aircraft’s most likely position and continue generating navigation corrections even when visual references are limited or unavailable.

Unlike conventional dead-reckoning navigation systems, where positioning errors increase progressively as distance is flown, the combined use of Visual Odometry, Satellite Map Matching and TRN enables the VNS01 to keep navigation error bounded during extended GNSS outages. Under favorable operational conditions, the system that has demonstrated positioning errors can be constrained to approximately 30 meters, regardless of the distance travelled.

The new algorithms have been developed to support mission continuity in contested and GNSS-degraded environments, helping UAS manufacturers and operators maintain mission effectiveness in the presence of jamming, spoofing and other threats affecting satellite navigation systems.

As part of UAV Navigation–Grupo Oesía’s ongoing commitment to innovation in resilient navigation, these new capabilities further expand the company’s multi-sensor approach to assured autonomy, combining complementary navigation technologies to deliver precise positioning and mission continuity when GNSS signals are unavailable or compromised.

Nighthawk Flight Systems Partners with Scandinavian Avionics to Expand European Support Presence

New service and support relationship strengthens support for Nighthawk’s legacy systems internationally

Nighthawk Flight Systems today announced a new support partnership with Scandinavian Avionics, headquarter of The SA Group, located at Billund Airport, Denmark, to establish a dedicated European service and support presence for Nighthawk’s legacy avionics systems. The partnership expands Nighthawk’s ability to support existing operators and dealers across the European market, as Scandinavian Avionics will be performing in-house repairs, while setting up a spares pool for AOG exchange and loaner capabilities.

As Nighthawk continues to grow its international presence, the company has prioritized building a support infrastructure that keeps pace with the needs of its existing customer base. Scandinavian Avionics brings established regional expertise and an existing network of operators and installers, giving European operators of Nighthawk’s legacy systems direct access to local support, installation guidance, and service.

“Local support for our customers is a priority, and it becomes even more important as our footprint grows internationally. Operators who have trusted Nighthawk systems for years deserve a service partner who is close by, knows the equipment, and can respond quickly. Scandinavian Avionics has built exactly that kind of reputation across Europe, and we are proud to bring that level of reliability to our customers there,” said Paul Martin, CEO of Nighthawk Flight Systems.

“At The SA Group we strive to provide fast and efficient service to our customers in the international aviation market, and with almost 50 years of experience in avionics and instruments component maintenance and integrated logistics support (ILS), we are confident that this joint investment with our long-term partners of Nighthawk will provide a new level of support internationally and confirm our mutual commitment towards the operators in Europe and beyond,” said Michael R. Truelsen, CEO, Scandinavian Avionics.

Through this partnership, Scandinavian Avionics will provide installation support, maintenance, ILS and dealer coordination for operators of Nighthawk’s legacy systems throughout Europe, reinforcing Nighthawk’s commitment to responsive, long-term support for its installed customer base.

How to Select the Right Oil Filtration System for Aerospace Applications

In aerospace, oil filtration systems are the first line of defense against catastrophic component failure.

Microscopic contaminants in hydraulic fluids and lubricants have consequences beyond routine maintenance, forcing engineers and maintenance personnel to select filtration systems that prevent equipment failure, ensure regulatory compliance and minimize costly downtime in demanding environments.

The Hidden Costs of Poor Filtration in Aviation

Oil filtration systems in aerospace applications are critical safety mechanisms protecting precision-engineered components operating under extreme conditions. Aerospace engines, auxiliary power units and gearboxes depend on contaminant-free oil to maintain optimal performance, regulate temperature and ensure mechanical reliability across thousands of flight hours.

A single contamination event can cascade through hydraulic systems, compromising multiple components and grounding aircraft until repairs are complete.

Mitigating Catastrophic Component Failure

Microscopic particulate matter and water contamination pose significant threats. Metal particles, dust and moisture degrade precision components while accelerating wear and creating conditions for system failure.

Effective filtration removes contaminants before they can damage the main engines and gearboxes. The mechanical interactions within these systems demand pristine lubricants to maintain proper clearances, ensure smooth operation and facilitate heat dissipation throughout essential subsystems.

Extending Fluid Lifespan and Reducing Downtime

Aviation hydraulic fluids, such as Skydrol™ and Eastman Turbo Oil™, carry substantial price tags, making premature replacement a costly proposition. High-quality filtration extends fluid service life by removing contaminants, helping organizations avoid aviation fluid disposal fees imposed by U.S. Defense Logistics Agency. It also helps improve maintenance procedures while reducing downtime and lowering life cycle costs across operations.

Understanding Aerospace Contamination Regulations and Cleanliness Standards

Engineers and maintenance personnel verify that filtration equipment meets specific ISO cleanliness codes and National Aerospace Standard (NAS) classifications appropriate for their applications. These standards define acceptable contamination levels based on particle size and concentration.

Hydraulic applications typically require ISO 4406 compliance, while certain military and commercial aviation specifications demand even stricter contamination control. The aerospace filtration systems you select must maintain fluid cleanliness within mandated parameters throughout operational life cycles.

Key Technical Considerations

The micron rating indicates the smallest particle size a filter can effectively capture. Lower ratings provide finer filtration, removing smaller contaminants that can damage precision components. Aerospace applications typically require filters with micron ratings between 3 and 30, depending on the specific system and cleanliness requirements.

For example, a hydraulic servo valve requires finer filtration than a standard gear pump due to tighter internal tolerances. The appropriate rating protects critical components while maintaining adequate flow rates.

Inspection and replacement schedules depend on operating conditions, flight hours and manufacturer specifications. Most aerospace maintenance programs require regular filter inspections during scheduled intervals. Engineers base replacement decisions on differential pressure readings, contamination analysis or predetermined service hours.

Some advanced systems include real-time monitoring that alerts maintenance personnel when filters approach capacity. This approach enables proactive replacement before performance degrades and helps prevent filter bypass conditions that compromise system protection.

Common issues include filter bypass due to excessive differential pressure, inadequate flow capacity causing starvation, seal failures allowing contamination through the system and improper micron rating selection that fails to capture critical particle sizes.

Water contamination and degraded filter media can also compromise effectiveness, making regular monitoring and preventive maintenance essential to identify problems before they cause component damage.

Key Features to Prioritize When Upgrading Equipment

Drawing on insights from industrial filtration specialists like SC Industrial Sales, engineers must evaluate particulate removal efficiency across different micron ratings. It directly affects the amount of contamination that reaches critical components.

The experts at SC Industrial Sales note that weight and physical footprint must fit within aircraft space and mass budgets, where every pound affects fuel efficiency and payload capacity. Flow-rate capacity must also handle peak demand under extreme operating conditions, including high-altitude flights, temperature fluctuations and sustained high-performance operations.

These factors collectively determine system reliability, maintenance and operational costs.

Frequently Asked Questions

Engineers and maintenance personnel frequently ask the following questions when evaluating and maintaining aerospace oil filtration systems.

What are the key standards governing aerospace oil filtration?

Aerospace oil filtration systems must comply with standards from organizations including ASTM International, the Institute of Environmental Sciences and Technology, ISO (particularly ISO 4406), and NAS. These standards ensure filtration systems maintain the fluid cleanliness levels necessary for safe aircraft operation.

What is the significance of the micron rating in aerospace oil filters?

The micron rating signifies the smallest particle a filter can capture. It is a critical factor because different aerospace components have different sensitivities to contaminants. Selecting the right micron rating ensures protection without impeding fluid flow.

How often should aerospace oil filters be inspected and replaced?

Filters should be inspected and replaced based on manufacturer specifications, flight hours and operating conditions. Maintenance teams can use indicators like differential pressure readings and real-time monitoring to determine the right time for replacement.

What are common problems that can occur in aerospace oil filtration systems?

Common problems with aerospace filtration systems include filter bypass, inadequate flow, seal failures and filters with the wrong micron rating. Regular maintenance is key to preventing these issues.

Maximizing Reliability With the Right Oil Filtration System

The appropriate aerospace filtration system provides the strongest defense against catastrophic component failure and excessive life cycle costs.

Experienced providers who understand aerospace-specific challenges, such as the solutions providers at SC Industrial Sales, can deliver both proven standard solutions and customized equipment that addresses unique operational environments.

Archer to Acquire Boeing’s Wisk Aero, Insitu and SkyGrid Subsidiaries; Boeing to Invest in Archer and Collaborate

The Boeing Company and Archer Aviation Inc. have announced the companies have signed definitive agreements in which Archer will acquire Boeing’s Wisk Aero, SkyGrid and Insitu subsidiaries. The deal will combine complementary capabilities developed over decades in autonomy, electric vertical takeoff and landing (eVTOL) aircraft, and unmanned aircraft systems (UAS) – creating a groundbreaking end-to-end physical AI platform for aerospace and defense. 

Wisk, SkyGrid and Insitu have pioneered and incubated core autonomous flight technologies for the future that, in combination with Archer’s air taxi, UAS and AI technologies, will bring new and innovative solutions to the market. These companies, with nearly two million combined flight hours, are expected to bring a deep autonomy foundation to Archer’s ZEE artificial intelligence platform. This positions Archer to deliver an end-to-end physical AI platform across commercial aerospace, defense and air traffic management that can lead the next generation of aviation.

Archer’s Founder and CEO, Adam Goldstein said, “This is a watershed moment for Archer and the future of physical AI in aerospace and defense. This is the next big step forward in becoming a diversified platform, rapidly growing our revenue base and bringing scale to our business.”

In conjunction with the transaction, Boeing and Archer are entering into a collaboration and technology-sharing arrangement through which Boeing will retain access to the Wisk core autonomous flight technology for its current and next-generation commercial and defense aircraft. The transaction allows Boeing to retain strategic upside through its stake in Archer and simultaneously focus current and future investments into Boeing’s core businesses.

“This transaction is a win-win for Boeing and Archer,” said Brian Yutko, Boeing vice president, Commercial Airplanes Product Development. “It allows Wisk, SkyGrid and Insitu to accelerate capability development and time to market while ensuring Boeing capitalizes on its investments in these technologies over the past two decades through continued development in our core businesses. Having worked with the incredible teams in these companies firsthand, it’s clear this transaction will create an industry leader in the advanced aviation market. We look forward to collaborating with Archer to drive continued innovation in aerospace, defense and autonomy.” 

About the companies:

  • Wisk is the only company that has designed, built and flown six generations of eVTOL aircraft, amassing 1,700+ flight tests. Over the past 16 years, Wisk’s world-class team has developed unmatched autonomy capabilities powered by a next-gen flight-control computer, sensor suite, and radar system designed for certification in both civil and potential defense markets.  
  • SkyGrid has built a leading ground-based, aircraft-agnostic air traffic management solution that establishes the digital foundation for the future of automated airspace. SkyGrid enables safe integration, scalable automation and coordinated traffic management that is necessary for commercialization across the aviation ecosystem.
     
  • Insitu is a pioneer in designing, developing and manufacturing uncrewed aircraft systems (UAS) used in intelligence, surveillance and reconnaissance. Its product portfolio spans high-performance, cost-effective, resilient, VTOL-capable UAS and AI-enabled software solutions. Insitu’s technologies have helped the armed forces of 35 nations make quicker, more informed decisions to bring warfighters home safely. With offices in the US, Australia, the UK, and the UAE, Insitu has manufactured and fielded more than 3,500 UAS and provides operations and support networks in every hemisphere of the globe. 

Additional details of the transaction are available in Archer’s Form 8-K filed today with the Securities and Exchange Commission. The transaction remains subject to certain agreed-upon closing conditions, including expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act and is expected to close by the end of 2026. Moelis & Company LLC is acting as financial advisor to Archer and Fenwick & West LLP is serving as outside counsel. J.P. Morgan Securities LLC is serving as financial advisor to Boeing and Mayer Brown LLP is acting as outside counsel.

July Search Trends Expose Uneven Pressure Across the Aviation Aftermarket

Each month, search activity across the Locatory.com marketplace provides a timely indication of what airlines, MROs and suppliers are actively sourcing.

Analysis of the most searched and hardest-to-find parts offers an early view of changing demand, emerging availability gaps and the component categories placing the greatest pressure on the aviation aftermarket.

What July Marketplace Activity Reveals

The most-searched list was heavily represented by components for the Airbus A320 and Boeing 737 families.

Among the most frequently searched Airbus components were nose radome assemblies (D53132210000 and D53132110000), elevator servo control (31075-840), a retractable landing light (4315542), flight control unit (C12850AC03) and an integrated drive generator (1706903).

On the Boeing side, high demand parts included high-stage bleed-air valve (3214446-4), hydromechanical unit (442653) for the CFM56-7B, main engine control (8063-214), air starter (3505945-12) and bleed-air precooler (194792-4).

Search activity also extended into cabin, safety and structural systems. Frequently searched components included a main landing gear brake assembly for the A321 (C20534100), oxygen mask (174692-N7), water heater (24E507009G03), A320-family roller shade assembly (170-12155-990), Embraer E170 and E190 vacuum waste generator (14330-375), ELT battery (452-0133), multi-tank indicator (1407KID02-03) and Boeing 767 latch assembly (91049-18).

The breadth of these searches reflects the intensive utilization of mature narrowbody fleets during the summer peak. EUROCONTROL recorded an all-time European network high of 37,659 flights on 24 July 2026. Moreover, during the week of 20 to 26 July, Europe averaged 36,554 daily flights, 3% more than in the same period of 2025. Albania, Georgia, Greece, Serbia and Montenegro, and Türkiye set new national traffic records, while Air Serbia, easyJet, Jet2.com and Turkish Airlines also surpassed daily highs established earlier in the summer.

Mature Engines Continue to Drive Aftermarket Activity

Engine-related hardware formed a major part of the most-searched dataset. The list included CFM56-related hydromechanical and main engine controls (442653, 8063-214 and 8061-536), a stage-one fan blade assembly (338-002-114-0), stage 4-9 compressor spool (2048M20G03), first-stage nozzle segment (340-256-252-0), variable bleed-valve stop mechanism (3282970-5), oil cooler (3200674-2) and fuel-metering unit (FMU702-03).

The pattern confirms that the CFM56 aftermarket remains central to airline operations despite the growth of LEAP and GTF-powered fleets. More than 23,000 CFM56 engines remain in service with over 600 operators, supported by an open MRO network of approximately 40 shops worldwide.

By the beginning of the 2026 peak flying season, the CFM56-7B fleet had accumulated more than 610 million operating hours, while the CFM56-5B had exceeded 334 million hours. That installed-

base scale continues to generate demand across engine controls, accessories, compressor hardware, turbine material and repair capabilities.

IATA identified engine MRO bottlenecks and parts availability as urgent industry issues in June 2026. Its recommendations included expanding approved repair options, improving access for independent MRO providers, aligning maintenance capacity with airline requirements and increasing visibility into delivery delays and repair turnaround times. IATA separately highlighted aftermarket access, supply-chain transparency, digitalization and workforce capacity as priorities for improving aerospace supply performance.

Recent agreements show how airlines and engine manufacturers are attempting to address these requirements. On 18 July, CFM International announced that GE Aerospace and Safran Aircraft Engines had each committed more than $1 billion over five years to expand internal MRO, repair and test-cell capacity. CFM also reported that three new Premier MRO providers had joined its network during the preceding 18 months as it prepared for a significant increase in LEAP shop visits.

These investments will expand long-term capacity, but the effect will be gradual. New facilities and repair lines must first secure approvals, tooling, test capability, trained personnel and reliable material supply before they can shorten shop queues or return more engines to service.

GE90 Engine Controls Remain the Clearest Scarcity Signal

The strongest pattern in July’s hardest-to-find dataset was the continued concentration of GE90 and Boeing 777 engine-control equipment, a trend also observed in previous months of Locatory.com marketplace activity.

Five hydromechanical fuel control unit references appeared on July’s hardest to find list (8061-684, 8061-685, 8061-686, 8061-918, and 1693M75P08). It also contained three FADEC references (105E70898G1, 105E70898G2 and 105E70898G3) together with temperature and pressure sensor (0154GF9), check valve (1548-05-12) and oil-level sensor (350-711-801-0).

Recent GE Aerospace disclosures explain this maintenance demand. In May 2026, the manufacturer reported that approximately 70% of the GE90 fleet had not yet undergone a second shop visit. GE said these visits typically involve around 50% more work than first shop visits because they include additional compressor-related maintenance.

GE Aerospace also reported that, over the last 12 months, Commercial Engines & Services internal shop-visit revenue had increased by approximately 30%, while spare-parts revenue had grown by more than 25%. Its second-quarter results continued to show strong services activity.

As more GE90 engines enter heavier second-shop-visit workscopes, demand can spread beyond major modules and life-limited parts to controls, sensors, valves and accessories needed to complete the engine build and return it to service.

Patterns Within the Hardest-To-Find Parts

Beyond the GE90 cluster, July’s hardest-to-find list contained several smaller patterns across Boeing widebodies, regional aircraft and specialist airframe systems.

A smaller cluster concerns the Boeing 787. A fuel height temperature sensor (20301-0134), an environmental control system air outflow valve assembly (623Z1060-180), and a rivet (CR3524EE-6-04) all appear on the shortages list.

Other widebody-related entries included a Boeing 767 fuel-system connecting assembly (CN1156-732) and a Boeing 747 aluminum retainer (65B10920-609). For mature widebody fleets, sourcing difficulty can arise even where total demand is lower than for A320-family or 737 parts. Smaller active populations, reduced production frequency and dependence on repair or teardown channels can make specific part numbers disproportionately difficult to locate.

A strap assembly (BA670-00001N3703) and a landing gear door component (CC670-33151-6S), both compatible with the Bombardier CRJ family, appear on the hardest-to-find list. Components for regional types typically draw on a smaller installed base and a narrower pool of interchangeable stock than mainline narrowbody or widebody types, which increases the likelihood that a specific part number becomes difficult to source even without any wider market disruption.

The list also contained a CFM56-5 fuel-cooled oil cooler case assembly (34831-1583), starter valve assembly (350-708-806-0), tube assembly (113T1910-90), cable assembly (284T1015-1), ball rotor (2923151-102), filter assembly (612C3504-001), main power supply (10074910-114), switch (90-48401-7), electrical receptacle (DC22E12-10P), pressure gauge (GP12-127), water faucet assembly (AR9030-3D7D492), literature pocket assembly (F0426595) and multiple brackets, retainers, bearings and seal attachments.

Connections to Current Fleet Developments

The concentration of narrowbody components in the most-searched dataset reflects the continuing gap between airline fleet requirements and the number of new aircraft manufacturers can deliver.

Airbus delivered 351 commercial aircraft during the first half of 2026, including 271 A320-family aircraft. It ended the first half of 2026 with an order backlog above 9,200 aircraft and roughly ten and a half years of production coverage at current delivery rates.

Boeing delivered 314 commercial aircraft during the same period, including 243 737s, 15 777s and 40 787s. Its total company backlog reached a record $715 billion, including more than 6,200 commercial aircraft.

With new aircraft arriving well short of what airlines would prefer, CFM56-powered A320ceo and B737NG fleets are continuing to fly for longer than originally planned. That extended utilization sustains demand for accessories, pneumatic units, controls, rotating hardware and used serviceable material. It also increases exposure to heavier shop visits as engines accumulate additional hours and cycles.

The Boeing 787 parts appearing in the hardest-to-find list reflect a different stage of the fleet lifecycle. Early-build Dreamliners are now reaching their 12-year heavy maintenance threshold, while the secondary market for 787 material remains less developed.

Moreover, the aviation industry continues to face a shortage of certified maintenance technicians, with many experienced workers approaching retirement. This is extending repair turnaround times across both narrowbody and widebody fleets, even when parts are available. Peak summer utilization, with global load factors at record levels, has compounded the effect, leaving less operational slack to absorb any single component delay.

Engine Growth Is Putting Pressure on MRO Capacity

The Farnborough International Airshow demonstrated the scale of future engine demand.

CFM announced a record agreement with IndiGo for more than 1,000 LEAP-1A engines to power 510 A320neo-family aircraft. The agreement also included the development of additional MRO capability for IndiGo’s expanding fleet.

During the show, GE Aerospace and CFM recorded commitments for approximately 1,800 engines, while Pratt & Whitney said it had received more than 800 GTF orders since the start of 2026, taking the GTF backlog above 8,000 engines.

These orders create a large future requirement for overhaul capacity, spare engines, component repair, tooling, test cells and qualified technicians.

However, it will not instantly remove present demand for CFM56 or GE90 material. The aircraft and engines ordered at Farnborough will enter service progressively over several years. In the meantime, airlines still depend on existing A320ceo, 737NG and 777 fleets to operate their schedules.

Expanding MRO capacity requires both capital investment and higher productivity from existing facilities. Pratt & Whitney is investing more than $100 million to expand three MRO facilities in the United States to increase engine-maintenance capacity. GE Aerospace, meanwhile, reported a 20% reduction in CFM56 turnaround time at its Wales facility and more than a 10% year-on-year improvement across LEAP, CFM56 and GE90 work during the fourth quarter.

Outlook for the Coming Months

As the summer flying peak gradually turns attention to the autumn maintenance period, procurement demand is likely to shift. Airlines and MROs will move from protecting peak-season dispatch reliability towards preparing for scheduled inspections, engine removals, winter maintenance inputs and heavier shop visits.

The hours and cycles accumulated during peak operations will show up in the aftermarket as scheduled material demand.

Procurement teams should therefore begin securing critical rotables, confirming repair capacity and reviewing exchange-pool exposure before autumn demand intensifies. Particular attention should be given to components with limited interchangeability, long repair turnaround times or repeated appearance in hard-to-find searches. Locatory.com

New, Free Webinar Series: Surface Roughness, Texture and Tribology

Michigan Metrology, provider of surface texture measurement, consulting, and training, is presenting a new, free webinar series. In the Surface Roughness, Texture, and Tribology series, Dr. Don Cohen will present excerpts from the short course of the same name. The free, one-hour webinars will provide an excellent introduction to surface texture and how it impacts functionality.

Part 1 of the series will be held August 27, 2026 at 1:00PM EST. This webinar will provide an overview of surface texture analysis and measurement instruments, and it will go in-depth into the critical topic of Filtering (roughness, waviness, form, cutoffs, etc.)

Event Details:

Surface Roughness, Texture and Tribology Free Webinar Series

Part 1: Introduction, Instruments, and Filtering, August 27, 2026, 1:00pm EST

Register and learn more at michmet.com/webinars

The free webinar series offers a unique opportunity to learn the fundamentals of surface roughness and tribology and how they relate to friction, wear, noise, sealing, and appearance, in manufacturing and product development.

Upcoming webinars in the series will include:

  • Surface Texture Parameters
  • Wear Measurement
  • Dry Friction
  • Lubricated Friction
  • Surface Energy, Surface Wetting, and Surface Texture

L2 Aviation Selected for U.S. Air Force KC-46 CASPER Multiple Award Contract

 L2 Aviation Selected for U.S. Air Force KC-46 CASPER Multiple Award Contract  

L2 Aviation, a global leader in avionics integration, manufacturing, certification, aircraft modification, repair, and defense sustainment solutions, announced today that it has been selected by the United States Air Force as an awardee on the KC-46 Commercial Aircraft Strategic Parts Exchange and Repair (CASPER) Multiple Award Contract (MAC).

The CASPER program is a Multiple Award Indefinite Delivery/Indefinite Quantity (IDIQ) contract over a five-year ordering period. The contract positions L2 Aviation to compete for future task orders supporting the repair, exchange, teardown, testing, evaluation, and sustainment of commercial-derived components for the KC-46A Pegasus aerial refueling aircraft. Selection as a contract holder expands the company’s opportunities to support the U.S. Air Force’s KC-46A sustainment mission through future task order competitions under the program.

“This award represents another important milestone in L2 Aviation’s continued expansion within the defense market,” said Tony Bailey, President and Chief Operating Officer of L2 Aviation. “Being selected by the United States Air Force validates the investments we have made in quality, engineering, manufacturing, repair capabilities, FAA-certified operations, and disciplined program execution. This development provides L2 Aviation the opportunity to compete for future work supporting one of the Air Force’s most important aircraft platforms. We are honored by the confidence placed in our team and look forward to supporting the mission readiness of the KC-46 fleet.”

The Boeing KC-46A Pegasus serves as the U.S. Air Force’s next-generation aerial refueling aircraft, providing worldwide air refueling, cargo transport, passenger movement, and aeromedical evacuation capabilities. As the fleet continues to grow, long-term sustainment and repair capabilities remain critical to maintaining operational readiness.

“L2 Aviation continues to demonstrate that our capabilities extend well beyond traditional avionics integration,” said Drew Bishop, Business Development Manager, Government Systems. “This award expands our position within the military sustainment market and creates new opportunities to support the Department of Defense with the same quality, responsiveness, and technical excellence that have defined L2 Aviation for decades. We look forward to competing for future task orders and building lasting relationships across the defense community.“

The CASPER award further strengthens L2 Aviation’s growing defense portfolio and reflects the company’s expanding capabilities across engineering, manufacturing, repair, metal fabrication, certification, supply chain management, and sustainment support. Every department within L2 Aviation contributes to these opportunities through operational excellence, regulatory compliance, customer satisfaction, and the delivery of high-quality products and services.

Choosing High-Altitude Oxygen Filters: A Maintenance Guide for Aircraft Systems

At 35,000 feet, a faulty oxygen filter can mean the difference between a routine flight and an emergency descent. Aircraft oxygen systems face extreme pressure differentials and contamination risks that ground-level equipment does not.

Material selection, filtration efficiency and certifications become life-safety decisions when a filter failure can trigger catastrophic events in oxygen-rich environments.

Risks of Improper Filtration in Aircraft Systems

High altitude creates a physiological challenge known as hypobaric hypoxia, occurring when reduced atmospheric pressure limits oxygen availability. Aircraft oxygen systems deliver supplemental oxygen to maintain safe blood oxygen levels, and these systems depend on filters that protect without introducing new hazards.

Filter failure introduces immediate danger. When oxygen filters fail, they allow contaminants into the breathing supply or restrict flow entirely, forcing crews to deploy emergency oxygen and execute rapid descents to breathable altitude.

The contamination threat extends beyond flow obstruction. According to experts at Chase Filters & Components, an engineering firm specializing in high-pressure filtration for aerospace applications, even filters that meet basic standards can become ignition points without proper fault tolerance design. Particulate matter interacting with oxygen under pressure creates conditions in which a single spark or friction point can trigger catastrophic failure.

Key Selection Criteria for High-Altitude Oxygen Filters

Evaluating filters requires examining several technical criteria that address contamination dangers and system failure modes.

Pressure Rating and Altitude Reliability

Filters must maintain structural integrity and performance from ground level to 40,000 feet, while pressure differentials during ascent and descent subject housings to repeated stress cycles.

Federal regulations require transport-category aircraft to provide at least 15 minutes of protective oxygen to each crew member under specific conditions. Filters failing to maintain adequate flow under these parameters violate safety requirements. The pressure rating must cover both normal operations and emergency scenarios when oxygen demand peaks.

Oxygen Compatibility and Material Selection

Material choice is also a critical safety factor, as not all metals and alloys resist ignition equally when exposed to high-pressure oxygen. Data highlighted by the specialists at Chase Filters & Components show that brass resists sustained combustion up to 10,000 PSI, while stainless steel may only resist it up to 500 PSI. This difference determines whether a filter contains a fire or fuels one.

The best oxygen filters for high-altitude systems need materials that remain stable across wide temperature ranges and pressure swings. Material incompatibility leads to failures when industrial-use filters are installed in aerospace oxygen systems.

Filtration Efficiency and Contamination Control

A filter’s micron rating determines which particle sizes it captures, though finer ratings increase pressure drop across the filter element. Understanding system contaminants and acceptable restriction levels helps balance these factors.

Ignition in oxygen systems stems from multiple mechanisms, including adiabatic compression and particle impact. When particles strike surfaces at high velocity in an oxygen-rich environment, the friction and heat generated can reach ignition temperatures. Effective filtration removes these particles before they enter high-flow areas where velocities peak.

Filter efficiency provides additional performance data by describing the percentage of particles at a given size that the filter actually captures. Filters with lower efficiency ratings allow some particles to pass through, so even small quantities of contaminants can accumulate at critical points.

Certification and Test Compliance

Different industries use different testing protocols. Standards like ASTM G175 Phase 2 separate basic compliance from genuine fault tolerance by testing how filters respond to worst-case failure scenarios rather than routine operation.

Chase Filters & Components emphasizes that this test simulates an active fire to verify that the filter can contain it and prevent a spread. The test subjects the filter to ignition conditions, while maintaining oxygen flow and pressure. Filters that pass demonstrate worst-case survivability. This level of assurance exceeds standard compliance and confirms that filtration equipment will perform when failures occur elsewhere in the system.

Frequently Asked Questions About Aircraft Oxygen Filter Maintenance

Maintenance operators frequently raise these questions about oxygen filtration systems.

What are the main causes of oxygen filter failure at high altitudes?

Temperature cycling during ascent and descent causes the expansion and contraction of filter materials, leading to cracked housings and loosened seals. Moisture contamination becomes especially dangerous at altitude, where it can freeze and block filter elements. Installing filters rated below the system’s maximum operating pressure creates a critical vulnerability. These components can fail structurally when the oxygen demand peaks.

How can you verify a filter is safe for oxygen service?

Ask for documentation showing that the filter passed ASTM G175 testing or equivalent oxygen-compatibility protocols. The pressure rating should exceed your system’s maximum operating pressure by an adequate margin, and materials used in the housing and element should appear on approved oxygen service lists.

What is the impact of particulate contamination on system safety?

Particles can create multiple hazards in oxygen systems. They generate friction heat at high velocities and can ignite system materials in oxygen-rich environments. Accumulation at regulators and valves interferes with flow control, while large debris jams moving parts and prevents valves from sealing properly.

How does filter maintenance reduce unplanned downtime?

Replacing oxygen filters based on pressure drop measurements helps maximize their service life while preventing flow restrictions. Maintenance teams track these trends over time, enabling them to identify emerging issues.

Can an incorrect filter type damage downstream components?

Filters with inadequate efficiency allow contaminants to reach regulators, valves and breathing devices. These precision components need clean oxygen to function correctly, and particle buildup accelerates wear that leads to premature failure. The best oxygen filters for high-altitude systems protect expensive downstream equipment from this contamination damage. A single filter failure can cascade through multiple system elements, resulting in repair costs far exceeding the filter’s original price.

Final Considerations for High-Altitude Safety

Oxygen system failures at altitude offer no second chances. Filter selection carries safety implications that go beyond equipment specifications to crew protection and mission success. Components meeting rigorous oxygen compatibility standards form the first line of defense, while disciplined maintenance practices ensure those defenses remain intact throughout the aircraft’s life.

Iridium Announces Commercial Availability of Iridium PNT ASIC, Bringing GNSS Protection to Devices Worldwide 

Iridium Communications Inc., a provider of global voice, data, and positioning, navigation and timing (PNT) satellite services, announced the commercial availability of the Iridium PNT ASIC, a first-to-market chip designed to help protect GPS- and GNSS-dependent devices from jamming, spoofing, and other growing threats. 

Since the Iridium PNT ASIC’s unveiling in October 2025, Iridium has received unprecedented demand from more than 150 organizations worldwide, spanning maritime, unmanned and autonomous systems (UXV), aviation, telecommunications, and other critical infrastructure sectors.

“The market response to the Iridium PNT ASIC has reinforced what we’re hearing from customers around the world: assured PNT is becoming an essential capability across critical industries,” said Dr. Michael O’Connor, executive vice president, PNT, Iridium. “With commercial availability, we’re enabling manufacturers to integrate trusted timing and location capabilities into smaller, more efficient designs, making assured PNT accessible to more applications than ever before.

Measuring just 8 by 8 millimeters and weighing less than 0.2 grams, the application-specific integrated circuit (ASIC) represents a major step forward in expanding access to assured PNT technologies at scale. The chip delivers cryptographically secure timing and location data from the Iridium satellite network through one-way signal bursts that are powerful enough to work where traditional GNSS often cannot, including inside structures and in contested environments.

By continuously validating signal integrity and delivering trusted PNT data anywhere on Earth, the Iridium PNT ASIC provides a powerful new foundation not only for resilient navigation, but also timing. Financial markets, telecommunications networks, power grids, and governments all depend on precise time synchronization to coordinate operations and maintain reliable service.

As global reliance on GNSS continues to grow, so does the frequency and sophistication of signal interference such as jamming and spoofing. Recent incidents including the May 2026 in-flight jamming of United Kingdom Defence Secretary John Healey highlight increasing operational and safety risks associated with GNSS spoofing and jamming across commercial transportation, aviation, and critical infrastructure environments. According to a 2019 study sponsored by the U.S. National Institute of Standards and Technology (NIST), a GPS outage was estimated to cost the U.S. economy approximately $1 billion per day. Adjusted for inflation, that figure would exceed $1.3 billion per day in 2026, underscoring the growing importance of reliable backup solutions.


Compact Assured PNT Integration Underway

Solace Communications, a provider of mission-critical communications solutions for demanding and remote environments, is one of several Iridium partners integrating the Iridium PNT ASIC. Its Vector family of assured PNT products combines Iridium PNT with multi-band GNSS and inertial sensing to deliver resilient positioning, navigation, and timing with continuous confidence scoring, while LTE and Iridium Short Burst Data (SBD) provide secure telemetry and messaging.

“The Iridium PNT ASIC supports our wider strategy of building one of the first edge-native, confidence-scored assured PNT platforms around multiple sources of positioning, timing, and motion data,” said Adam Elcock, co-founder, Solace Communications. “Future navigation systems must do more than report a position. They must continuously determine whether that position and its timing can be trusted. That is the role Vector has been designed to fulfill and is now being deployed.”

Skyband Systems, a developer of aviation-grade, PNT-resilient navigation hardware, will integrate the Iridium PNT ASIC into its M100 LRU for business and commercial aviation. The M100 combines Iridium PNT with onboard inertial sensing to alert crews to GNSS jamming and spoofing while providing aircraft location for enhanced situational awareness.

“Iridium’s secure and powerful global service is the perfect platform for Skyband’s resilient navigation product,” said Robert Wiggenhorn, co-founder, Skyband Systems. “We are excited to partner with Iridium as they launch the Iridium PNT ASIC and look forward to further strengthening their legacy of aircraft innovation and safety.”

Iridium continues to engage with developers, original equipment manufacturers, integrators and technology providers to incorporate assured PNT capabilities into next-generation solutions.

Liebherr To Exhibit Multiple Solutions at Farnborough Airshow 2026

Efforts to increase fuel efficient aircraft operation and an increasing demand for digital solutions are two main drivers for the aviation industry’s – a substantial transformation process that will affect the entire value chain for the benefit of the development of next-generation aircraft with advanced aerodynamic designs and innovative propulsion systems. Through its investments into research and technology beyond typical industry standards, Liebherr plays a key role in developing solutions enabling efficient and sustainable air travel.

At the 2026 Farnborough International Airshow in Farnborough (United Kingdom) from July 20 to 24, the company welcomes customers, partners, and the public to explore its state-of-the-art technologies in hall 4 at booth no. 4918.

“We are looking forward to joining Farnborough Airshow again this year. Decades of expertise in designing and integrating environmental control and thermal management systems, flight control and actuation, landing gear, as well as signal and power electronics, position us as a key partner for aircraft manufacturers,” stated Alex Vlielander, chief customer officer at Liebherr-Aerospace & Transportation SAS. “Building on our core strengths, we constantly push the boundaries of what is currently achievable. Our advancements in electrification, additive manufacturing, and other innovative technologies will make a substantial impact.”

Electromechanical Actuators

For long, Liebherr-Aerospace says it has led the way of developing electromechanical actuators (EMAs) for medium and large commercial aircraft. The company has recently broadened its portfolio to include smaller actuators, expanding its application range.

This new product concept has been specifically designated for the Advanced Air Mobility (AAM) sector, as well as smaller aircraft, business jets, and helicopters. It focuses on scalability for compact installation, an optimized power-to-weight ratio, and exceptional reliability, leveraging Liebherr’s decades of experience and millions of flight hours accumulated across various aircraft programs.

Extended Wingspan with Folding Mechanism for Superior Aerodynamics

A 1:6 scale operational model of the Boeing 777-9 folding wing tip illustrates how a substantial portion of the wing can be folded upward to fit into existing airport infrastructure. All essential components of this mechanism – including the angled gearbox, power drive unit, and multiple actuators – are engineered qualified and produced by Liebherr.

High-aspect-ratio wing designs utilize increased span and reduced thickness, resulting in better aerodynamics and thus improved fuel efficiency. Liebherr is actively supporting this trend by delivering reliable wing folding solutions tailored for the next generation of more efficient aircraft.

Additive manufacturing and thermal management

Liebherr is continuously expanding the use of its additive manufacturing capabilities across diverse applications. For instance, at Farnborough Airshow 2026, a valve block for the Airbus A350 lower cargo door actuation system will be presented – the first complex additively manufactured hydraulic component to enter series production.

Another exhibit demonstrating the successful use of this advanced technology is an air-liquid heat exchanger. Efficient thermal management is increasingly vital as aircraft systems become more electrified. Thermal management solutions are among Liebherr-Aerospace’s core competencies, as evidenced by several patents for air-air and air-liquid applications already held by the company.

Liebherr’s vapor cycle compressor on display is a crucial component in such air-conditioning systems for aircraft, helicopters, and drones. This compressor enhances thermal management and boosts the efficiency of onboard energy management, especially for additional cooling and in conjunction with highly efficient heat transfer equipment.

Ready for the Future with Electrification and Digitalization

For more than 20 years, Liebherr has been advancing the electrification of aircraft components and systems, positioning itself to deliver efficient solutions for future platforms. In next-generation more-electric aircraft, engines are expected to be decoupled from onboard power consumers to maximize efficiency. In this vision, electrically powered systems will gradually replace bleed air and centralized hydraulic systems electric air management and actuation systems will be adopted in due course, as well as autonomous hydraulic power generation.

Liebherr’s exhibits showcase the realization of these requirements: highlights include advanced electromechanical actuators, a highly efficient power pack (HEPP), and for air systems, the 100-kW motorized turbo compressor with its dedicated motor control unit, underscoring Liebherr’s leadership in technological innovation.

Simultaneously, digitalization is rapidly reshaping the design, production, and maintenance of aircraft systems and components. As Liebherr transitions toward a model-based enterprise, it collaborates with customers early in the process, for example by sharing digital models, thus contributing to more efficient aircraft design and development.

Narrowbody Landing Gear

Liebherr’s A220 landing gear system is among the most advanced landing gear solutions for modern commercial aircraft. The system contributes significantly to the aircraft’s overall efficiency and operational performance thanks to its strong emphasis on weight reduction, reliability, and maintainability.

Utilizing cutting-edge technologies and extensive experience, Liebherr delivers a fully integrated solution that meets the highest safety and durability standards. The A220 landing gear system sets the benchmark for next-generation aircraft, with the A220 main landing gear featured at Liebherr’s booth.

Defense Sector Partner

Innovations and solutions that have proven successful in the civil sector are ideally suited for defense applications. Leveraging on its extensive industrial expertise, Liebherr supplies a wide array of onboard systems and comprehensive lifecycle support for numerous airborne defense platforms, including troop and cargo transport, pilot training, aerial refueling, air defense, and reconnaissance missions.

Liebherr’s solutions ensure efficient and reliable operation of military aircraft across diverse mission profiles. A particular highlight at Farnborough Airshow is the interactive slider exhibit, which showcases Liebherr’s contribution to the Eurofighter Typhoon program.