This podcast from Aviation Maintenance Magazine examines two separate helicopter accidents that occurred within a two-month period. Both incidents involved Bell 206 helicopters and were attributed to improper maintenance, specifically a lack of grease on drive shafts, leading to catastrophic failures and fatal consequences. The author, a former NTSB and FAA investigator, highlights the importance of rigorous maintenance procedures and thorough inspections to prevent such tragedies in the future, stressing that helicopter safety begins in the hangar.