Superseded. This AD was superseded by AD 2018-18-01. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2018-10-11
Effective 06/01/2018 · Published 05/17/2018
Airworthiness Directives; CFM International S.A. Turbofan Engines
Summary
We are superseding Airworthiness Directive (AD) 2018-09-10 for all CFM International S.A. (CFM) Model CFM56-7B engines. AD 2018-09-10 required initial and repetitive inspections of the concave and convex sides of the fan blade dovetail to detect cracking and replacement of any blades found cracked. This AD requires the same initial and repetitive inspections but revises the compliance time for the initial inspection…