Airworthiness directives › 2022-14-02
AD 2022-14-02 Airworthiness Directives; CFM International, S.A. Turbofan Engines
Applicability*9
This AD applies to CFM International, S.A. 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 model turbofan engines with an installed: (1) High-pressure turbine (HPT) rotor stage 1 disk (HPT stage 1 disk) with part number (P/N) and serial number (S/N) identified in Table 1 to paragraph (g)(1) of this AD; or, (2) Stages 6-10 compressor rotor spool with P/N 2468M20G03 and S/N GWN1141P.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) At the next engine shop visit or before exceeding the cycles since new (CSN) threshold in Table 1 to paragraph (g)(1), whichever occurs first after the effective date of this AD, or if the CSN threshold in Table 1 to paragraph (g)(1) has been exceeded as of this AD's effective date, within 50 flight cycles (FCs) from the effective date of this AD, remove the HPT stage 1 disk with P/N and S/N identified in Table 1 to paragraph (g)(1) of this AD from service and replace with an HPT stage 1 disk eligible for installation. ER01JY22.014 (2) At the next engine shop visit or before exceeding 7,290 CSN, whichever occurs first after the effective date of this AD, or if 7,290 CSN has been exceeded as of this AD's effective date, within 50 FCs from the effective date of this AD, remove the stages 6-10 compressor rotor spool with P/N 2468M20G03 and S/N GWN1141P from service and replace with a stages 6-10 compressor rotor spool eligible for installation.
Unsafe condition
This AD was prompted by a manufacturer investigation that revealed that certain HPT stage 1 disks and a stages 6-10 compressor rotor spool were manufactured from material suspected to contain iron inclusion. The FAA is issuing this AD to prevent fracture and potential uncontained failure of certain HPT stage 1 disks and a stages 6-10 compressor rotor spool. The unsafe condition, if not addressed, could result in uncontained debris release, damage to the engine, and damage to the aircraft.
Affected ADs
None.
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