FAA Proposes Rotor Blade Fixes for Airplane Engine Safety
Published Date: 11/18/2025
Proposed Rule
Summary
The FAA wants to fix a safety issue with certain International Aero Engines AG models because some rotor blades can wear out and break. They’re proposing to require replacing these blades with safer parts to keep flights secure. Engine owners should act soon, as comments on this plan close by January 2, 2026, and the fix might cost some money but keeps everyone flying safe.
Analyzed Economic Effects
3 provisions identified: 2 benefits, 1 costs, 0 mixed.
Mandatory Blade Replacement Costs
If you own or operate aircraft with the listed IAE AG engines and have 3rd stage HPC rotor blades P/N 6A8353 or 6A8688 installed, the FAA would require replacing the full set of those blades at the next blade exposure after the AD’s effective date. The FAA estimates a per-engine cost of $30,085 (1 work-hour at $85 plus $30,000 parts), affecting 1,496 U.S.-registered engines and totaling $45,007,160 for U.S. operators.
Reduces Risk of Engine Fires and IFSDs
The proposed AD targets 3rd stage HPC rotor blades (P/N 6A8353 or 6A8688) that the manufacturer found susceptible to shroud wear and fractures; replacing them with approved parts aims to reduce engine fires, unplanned engine removals, aborted takeoffs, and in-flight shutdowns (IFSD). The FAA states this action is intended to prevent engine fire, reduced control of the airplane, and engine IFSD.
Specifies Eligible Replacement Part Numbers
The proposed AD defines which replacement blades are ‘‘parts eligible for installation’’: P/N 6C8368, P/N 6C8403, or later approved P/Ns, or blades modified to P/N 6A8353-001 or P/N 6A8688-001. Compliance requires replacing affected blades with one of these approved part numbers at the next 3rd stage HPC rotor blade exposure.
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Key Dates
Department and Agencies
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