FAA Orders Helicopter Valve Checks to Prevent Leaks and Crashes
Published Date: 12/12/2025
Rule
Summary
If you fly a Bell Model 427 helicopter, listen up! The FAA found some check valves in the transmission that might crack and leak, which isn’t safe. Starting January 16, 2026, you’ll need to inspect these valves regularly and replace any that are cracked or leaking—plus, you can’t put the old valves back in. This keeps your helicopter safe without breaking the bank.
Analyzed Economic Effects
1 provisions identified: 0 benefits, 1 costs, 0 mixed.
Mandatory inspections and fixes for Bell 427
If you operate a Bell Model 427 helicopter (serial numbers 56001–56084, 58001, 58002), starting January 16, 2026 you must measure and inspect certain transmission oil check valves (P/N 209-062-520-001, manufactured 2009). If the inlet-end diameter is more than 0.003 inch larger than the center measurement, you must do repetitive visual inspections and remove any valve found cracked or leaking; removed valves may not be reinstalled. The FAA estimates the initial measurement is 0.5 work-hour (cost $42.50) and replacing a valve would cost about $881 ($85 labor + $796 parts).
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