Airworthiness directives › 2022-13-12
AD 2022-13-12 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to General Electric Company (GE) GE Passport 20-17BB1A, GE Passport 20-18BB1A, and GE Passport 20-19BB1A model turbofan engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) For all affected engines, within the compliance times specified in paragraphs (g)(1)(i) through (iii) of this AD, perform a visual inspection of the core compartment for indications of fuel leakage, undetected fire, and heat distress: (i) For engines with less than or equal to 150 cycles since new (CSN) as of the effective date of this AD, inspect before exceeding 30 flight cycles (FCs) after the effective date of this AD. (ii) For engines with 151 to 200 CSN as of the effective date of this AD, inspect before exceeding 50 FCs after the effective date of this AD. (iii) For engines with greater than 200 CSN as of the effective date of this AD, inspect before exceeding 75 FCs after the effective date of this AD. Note 1 to paragraph (g)(1): Guidance for accomplishing the actions required by paragraph (g)(1) of this AD can be found in GE Service Bulletin (SB) PASSPORT20-A-72-00-0141-00A-930A-D, Issue No. 000, dated April 12, 2022, or GE SB PASSPORT20-A-72-00-0142-00A-930A-D, Issue No. 001, dated May 11, 2022 (GE SB PASSPORT20-A-72-00-0142-00A-930A-D). (2) If, during the visual inspection required by paragraph (g)(1) of this AD, there are indications of fuel leakage, undetected fire, or heat distress, before further flight, perform applicable maintenance in accordance with the FAA-approved instructions for continued airworthiness. (3) For engines with engine serial number (ESN) 904257 or higher, before exceeding 30 FCs after the effective date of the AD, re-torque the core compartment coupling nuts in accordance with Accomplishment Instructions, 6.B., Procedure, paragraphs (8) through (24) of GE SB PASSPORT20-A-72-00-0142-00A-930A-D. (4) For engines with ESN 904256 or lower, before exceeding 100 FCs after the effective date of the AD, re-torque the core compartment coupling nuts in accordance with Accomplishment Instructions, 6.B., Procedure, paragraphs (8) through (24) of GE SB PASSPORT20-A-72-00-0142-00A-930A-D. (5) For all affected engines, before further flight after performing the required actions in paragraph (g)(3) or (4), as applicable, perform a ground power assurance check and a borescope inspection of the core compartment in accordance with Accomplishment Instructions, 6.B., Procedure, paragraphs (32) through (38) of GE SB PASSPORT20-A-72-00-0142-00A-930A-D.
Unsafe condition
This AD was prompted by multiple engine fires that have occurred as a result of fuel leakage from the fuel nozzle to fuel manifold coupling nut connections. The FAA is issuing this AD to prevent fuel leakage from the fuel nozzle to fuel manifold coupling nut connections. The unsafe condition, if not addressed, could result in engine fire, failure of the engine, in-flight shutdown, and loss of the airplane.
Affected ADs
None.
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