The FAA is adopting a new airworthiness directive (AD) for International Aero Engines AG (IAE) V2500-A1, V2527E-A5, V2530-A5, and V2528-D5 turbofan engines. This AD requires reducing the published life limit of certain high-pressure compressor (HPC) stage 9-12 disc assemblies. This AD also removes from service those HPC stage 9-12 disc assemblies using a drawdown schedule. This AD results from IAE updating the low-cycle-fatigue (LCF) life analysis for certain HPC stage 9-12 disc assemblies. We are issuing this AD to prevent an uncontained failure of the HPC stage 9-12 disc assembly, resulting in an in-flight  engine shutdown and possible damage to the airplane.

DATES: This AD becomes effective November 30, 2009.

2009-22-06 – International Aero Engines AG (IAE) – V2500-A1
2009-22-06 – International Aero Engines AG (IAE) – V2527E-A5
2009-22-06 – International Aero Engines AG (IAE) – V2528-D5
2009-22-06 – International Aero Engines AG (IAE) – V2530-A5

2009-22-06.pdf