Airworthiness directives › 2022-03-19
AD 2022-03-19 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to General Electric Company (GE) Passport 20-17BB1A, Passport 20-18BB1A, and Passport 20-19BB1A model turbofan engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 120 days after the effective date of this AD, revise the airworthiness limitations section of the existing maintenance manual for your engine and the operator's existing approved continuous airworthiness maintenance program by adding Figure 1 to paragraph (g) of this AD. ER14FE22.000 Note 1 to paragraph (g): Where Figure 1 to paragraph (g) refers to “Life Cycles,” for the purpose of this AD, this refers to life cycles since new.
Unsafe condition
This AD was prompted by a manufacturing quality escape that requires a reduction to the life limit for certain high-pressure turbine (HPT) rotor stage 1 disks. The FAA is issuing this AD to prevent failure of the HPT rotor stage 1 disk. The unsafe condition, if not addressed, could result in uncontained disk release, damage to the engine, and damage to the airplane.
Affected ADs
None.
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