EASA AD 2024-0040-E
SUPERSEDED BY EASA AD 2024-0194
Summary
EASA Airworthiness Directive 2024-0040-E is an emergency directive addressing a potential unsafe condition in GE Aviation Czech M601 series engines installed on various aircraft including the LET L-410, Air Tractor AT series, Grumman G-164, and others. The directive mandates inspection of the centrifugal compressor case for cracks and restricts installation of affected parts. It applies to engines with specific part numbers M601-154.55 and M601-154.65 unless previously inspected and cleared.
What Changed
This new emergency airworthiness directive introduces a mandatory one-time detailed visual inspection of the centrifugal compressor case mount pad weld area on affected M601 engines due to reported cracks caused by non-conforming welding. It also prohibits installation of affected parts unless they have passed inspection and requires reporting inspection results to the manufacturer.
Why It Matters
This directive is critical for aviation professionals because undetected cracks in the centrifugal compressor case could lead to engine separation and loss of aircraft control. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. The directive also impacts parts management by restricting installation of non-inspected or cracked components.
What To Do
Operators of affected M601 engines must perform the detailed visual inspection within 10 flight hours or 30 days from 12 February 2024, whichever occurs first. If cracks are found, corrective actions must be taken before further flight, including contacting GE Aviation Czech or replacing the part. Inspection results must be reported to the manufacturer within 30 days, and installation of affected parts is prohibited unless cleared by inspection.
AI-generated summary from official EASA source document. Always verify against the original.