Superseded. This AD was superseded by AD 2023-21-07. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2018-03-13
Effective 02/28/2018 · Published 02/13/2018
Airworthiness Directives; General Electric Company Turboprop Engines
Summary
We are adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CT7-5A2, CT7-5A3, CT7-7A, CT7-7A1, CT7- 9B, CT7-9B1, CT7-9B2, CT7-9C and CT7-9C3 model turboprop engines. This AD requires initial and repetitive visual inspection and fluorescent- penetrant inspection (FPI) of the main propeller shaft. This AD was prompted by the failure of a main propeller shaft. We are issuing this AD to…