Airworthiness Directive · Amendment 39-11053 · International Aero Engines AG (IAE) V2500-A1 Series Turbofan Engines
International Aero Engines AG (IAE) V2500-A1 Series Turbofan Engines
Superseded. A later AD replaced this one: AD 99-25-03. Comply with the one in force.
International Aero Engines AG (IAE) Models V2500- A1 turbofan engines, installed on but not limited to Airbus Industrie A320 series airplanes.
This amendment adopts a new airworthiness directive (AD), applicable to International Aero Engines AG (IAE) V2500-A1 series turbofan engines, that requires initial and repetitive inspections of certain High Pressure Turbine (HPT) stage 1 and stage 2 disks utilizing an improved ultrasonic method when the disks are exposed during a normal shop visit, and if a subsurface anomaly is found, removal from service and replacement with a serviceable part. This amendment is prompted by the results of a stage 1 HPT disk fracture investigation which has identified a population of HPT stage 1 and 2 disks that may have subsurface anomalies formed as a result of the processes used to manufacture the material. The actions specified by this AD are intended to prevent HPT disk fracture, which could result in an uncontained engine failure, and damage to the airplane.
