FAA 2018-21-01

Supersedes AD 2017-20-06 that required a one-time inspection of the second stage low-pressure turbine (LPT2) blades and, replacement if necessary. This AD continues to require 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. This AD was prompted by the need to clarify the Applicability and Compliance sections of AD 2017-20-06.