Airworthiness directives › 2026-14-06
AD 2026-14-06 Airworthiness Directives; CFM International, S.A. Engines
Models named: LEAP-1A23, LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, LEAP-1A26E1, LEAP-1A29, LEAP-1A29CJ, LEAP-1A30, LEAP-1A32. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to CFM International, S.A. Model LEAP-1A23, LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, LEAP-1A26E1, LEAP-1A29, LEAP-1A29CJ, LEAP-1A30, LEAP-1A32, LEAP-1A33, LEAP-1A33B2, and LEAP-1A35A engines with an installed high-pressure turbine (HPT) rotor stage 1 blade, having part number (P/N) 2747M92P01, P/N 2553M91G03, P/N 2553M91G05, P/N 2553M91G06, P/N 2553M91G07, or P/N 2553M91G08 that has accumulated more than 1,100 South Asia takeoffs, and has accumulated 2,500 part cycles since new (PCSN) for Group 1 engines, or 5,100 PCSN for Group 2 engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For the purpose of this AD, the following definitions apply: (1) Group 1 engines are CFM Model LEAP-1A29, LEAP-1A29CJ, LEAP-1A30, LEAP-1A32, LEAP-1A33, LEAP-1A33B2, and LEAP-1A35A engines. (2) Group 2 engines are CFM Model LEAP-1A23, LEAP-1A24, LEAP-1A24E1, LEAP-1A26, LEAP-1A26CJ, and LEAP-1A26E1 engines. (3) A “South Asia takeoff” is any takeoff accomplished in the South Asia region, which includes the following countries: Bangladesh, Bhutan, India, Maldives, Nepal, and Sri Lanka. (4) A “sister engine” refers to the other engine installed on the same airplane.
Unsafe condition
This AD was prompted by reports of two in-flight shutdowns due to cracks in the HPT rotor stage 1 blades. The FAA is issuing this AD to prevent failure of the HPT rotor stage 1 blades. The unsafe condition, if not addressed, could result in failure of the engine, in-flight shutdown, loss of thrust control, and consequent loss of control of the airplane.
Affected ADs
This AD replaces AD 2025-21-03, Amendment 39-23175 (90 FR 57675, December 12, 2025) (AD 2025-21-03).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1