GE Czech Engines Need More Weld Peeks, FAA Warns Pilots
Published Date: 4/23/2025
Proposed Rule
Summary
If you fly planes with GE Aviation Czech M601 engines, listen up! The FAA wants you to keep checking the compressor case welds regularly for cracks because a bad weld could cause trouble. They’re giving more time between checks but want you to send inspection results to the maker. This keeps everyone safe without breaking the bank, but don’t wait—comments on this rule are due by June 9, 2025.
Analyzed Economic Effects
5 provisions identified: 2 benefits, 3 costs, 0 mixed.
Compressor case replacement cost if cracked
If a crack is found in the compressor case pad welds, you must replace the compressor case. The FAA estimates the on-condition replacement cost per engine is $5,850 (parts about $5,000 plus 10 work-hours of labor estimated at $850).
One-time check replaced by repetitive inspections
If you operate airplanes with GE Aviation Czech M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, or M601F engines, this proposed AD replaces the prior one-time detailed visual inspection (DVI) with required repetitive DVIs of the centrifugal compressor case pad welds for any crack. The FAA estimates the inspection labor is 1 work-hour at $85 per inspection and that the proposed AD would affect 45 engines on U.S. registry.
Mandatory reporting of inspection results
The proposed AD requires sending certain inspection results to the manufacturer. The FAA estimates reporting takes about 1 hour per response (Paperwork Reduction Act OMB Control Number 2120-0056) and estimates a reporting labor cost of $85 per engine (total estimated reporting cost for 45 U.S.-registered engines is $3,825).
Longer compliance time for initial inspection
The manufacturer and EASA determined the compliance time for the initial DVI can be extended, and the proposed AD reflects that longer compliance time compared to the prior AD. That means you have more time before the first required inspection under this proposed AD.
Manufacturer warranty may reduce operator costs
The FAA notes the manufacturer has indicated some of the costs of this proposed AD may be covered under warranty, which could lower the cost impact for affected operators.
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Key Dates
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