Airworthiness Directive 99-05-05
recurringAirworthiness Directives; International Aero Engines AG (IAE) V2500-A1 Series Turbofan Engines
What this AD requires
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.
Which aircraft AD 99-05-05 applies to
Installed on but not limited to Airbus Industrie A320 series airplanes; applies to each identified engine regardless of modification, alteration, or repair status.
Whether AD 99-05-05 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.