Engine - High Pressure Compressor Stages 2-5 Spool - Inspection
- Published
- Effective
- Deadline
- Replaces
- 2018-22-07
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must perform initial inspections of the HPC stage 6 seal ring installation and HPC stages 2-5 spool for cracks by August 30, 2019. Repetitive on-wing inspections are required for certain HPC spools, and a mandatory in-shop inspection and possible replacement must be completed as a terminating action. Comments on the AD are accepted until September 30, 2019.
Summary
Airworthiness Directive 2019-15-06 is a final rule issued by the Federal Aviation Administration (FAA) addressing Engine Alliance GP7270, GP7272, and GP7277 model turbofan engines. It mandates inspections of the high-pressure compressor (HPC) stages 2-5 spool for cracks and the stage 6 seal ring for correct installation to prevent unsafe conditions. The directive includes repetitive inspections and a mandatory terminating in-shop inspection to ensure continued airworthiness.
What changed
This directive supersedes AD 2018-22-07 by reducing the inspection intervals and adding repetitive inspections for a subpopulation of HPC stages 2-5 spools. It also introduces a mandatory terminating in-shop inspection and replacement procedure based on inspection results. These changes respond to findings of axial cracks caused by incorrectly installed stage 6 seal rings.
Why it matters
This AD is critical for aviation professionals as it addresses potential failure of HPC interstage seal teeth that could lead to uncontained engine failures. Operators and maintenance organizations must comply to ensure engine integrity and flight safety. The updated inspection intervals and terminating actions help prevent in-service failures and reduce risk to aircraft and passengers.
More for Engine Alliance GP7200
All 14- EASA AD US-2026-20-12Turbine - High-Pressure Turbine Interstage Seal - ReplacementOct 12, 2026
- EASA AD US-2023-11-06Engine - High-Pressure Turbine Interstage Seals - ReplacementJun 12, 2023
- EASA AD US-2022-10-04Engine - Stages 7-9 Compressor Rotor Spool - ReplacementMay 9, 2022
- EASA AD US-2021-26-04Engine - Fan Hub Assembly - Inspection / ReplacementJan 3, 2022
- EASA AD US-2021-12-01Engine - Low-Pressure Compressor Stage 1 Fan Blades - Inspection / Replacement
Get the next one by email
New ADs and bulletins for Engine Alliance GP7200, summarized like this page, every Monday.