Airworthiness DirectiveEASA AD US-2022-02-09

Engine - High-Pressure Turbine Disks - Inspection / Replacement

Published: Feb 15, 2022
Effective: Mar 15, 2022
Deadline: Mar 15, 2022
Replaces: 2021-11-15

International Aero Engines Ag V2500-( )5

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What to do

Operators of affected IAE V2500 turbofan engines must perform ultrasonic inspections of the HPT 1st-stage and 2nd-stage disks within the specified compliance times, which may be as soon as 10 flight cycles after March 15, 2022, depending on engine model and disk history. If inspection reveals defects, the affected disks must be replaced promptly. Stakeholders should consult the referenced IAE Non-Modification Service Bulletins for detailed inspection instructions.

Summary

The Federal Aviation Administration's Airworthiness Directive 2022-02-09 supersedes the previous AD 2021-11-15 and applies to International Aero Engines AG V2500 series turbofan engines, including models V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, and V2533-A5. This directive mandates ultrasonic inspections of the high-pressure turbine (HPT) 1st-stage and 2nd-stage disks and requires replacement if defects are found. It clarifies inspection compliance times, especially for disks transferred from high-thrust to low-thrust engine models.

What changed

This AD updates and supersedes AD 2021-11-15 by clarifying the compliance times for inspecting HPT disks installed on low-thrust V2500 engines that were previously operated on high-thrust models. It introduces specific inspection thresholds and procedures for ultrasonic inspection and potential replacement of affected turbine disks. The directive also incorporates updated service bulletins for inspection guidance.

Why it matters

This directive is critical for aviation safety as it addresses the risk of uncontained failure of high-pressure turbine disks, which can cause severe engine and aircraft damage. Operators and maintenance organizations must comply to prevent catastrophic engine failures and ensure continued airworthiness. Clear compliance timelines and inspection procedures help streamline maintenance planning and regulatory adherence.

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