Superseded. This AD was superseded by AD 2019-15-06. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2018-22-07
Effective 01/11/2019 · Published 12/27/2018
Airworthiness Directives; Engine Alliance Turbofan Engines
Summary
We are adopting a new airworthiness directive (AD) for all Engine Alliance (EA) GP7270, GP7272, and GP7277 model turbofan engines. This AD requires inspection of the stage 6 seal ring for correct installation and inspection of the high-pressure compressor (HPC) stages 2-5 spool for cracks. This AD also requires replacement of the HPC stages 2-5 spool if the stage 6 seal ring is incorrectly installed or if the HPC st…