Superseded. This AD was superseded by AD 2018-21-01. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2017-20-06
Effective 11/09/2017 · Published 10/05/2017
Airworthiness Directives; Honeywell International Inc. Turbofan Engines
Summary
We are adopting a new airworthiness directive (AD) for certain Honeywell International Inc. (Honeywell) AS907-1-1A turbofan engines. This AD was prompted by reports of loss of power due to failure of the second stage low-pressure turbine (LPT2) blade. This AD requires a one- time inspection of the LPT2 blades and, if the blades fail the inspection, the replacement of the blades with a part eligible for installation.…