AD 2025-04-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pratt | & Whitney | Airworthiness Directives; Pratt & Whitney Engines |
Unsafe Condition
The failure of the HPC IBR-7 was caused by a nickel powdered metal anomaly, which is similar in nature to an anomaly previously observed, and these parts are susceptible to failure much earlier than previously determined.
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Required Actions
Performing initial and repetitive angled ultrasonic inspections (AUSI) of certain HPC 7th-stage axial rotors for cracks and replacing the HPC 7th-stage axial rotors if necessary, in accordance with paragraph (g)(1)(i) or (g)(1)(ii).
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Compliance Time
Before further flight
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Affected Aircraft
Certain Pratt & Whitney (PW) Model PW1519G, PW1521G, PW1521GA, PW1521G-3, PW1524G, PW1524G-3, PW1525G, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A engines with a certain high-pressure compressor (HPC) 7th-stage axial rotor installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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