AD 2018-21-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | International | Aero | Airworthiness Directives; International Aero Engines (IAE) Turbofan Engines |
Unsafe Condition
Reports of in-flight engine shutdowns and aborted take-offs as the result of certain parts affecting the durability of the rear high-pressure compressor (HPC) rotor hub knife edge seal.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replacing the diffuser case air seal assembly, the high-pressure turbine (HPT) 2nd-stage vane assembly, and the HPT 2nd-stage borescope stator vane assembly with parts eligible for installation.
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Compliance Time
At the next engine shop visit
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Affected Aircraft
All International Aero Engines (IAE) PW1133G-JM, PW1133GA-JM, PW1130G-JM, PW1127G-JM, PW1127GA-JM, PW1127G1-JM, PW1124G-JM, PW1124G1-JM, and PW1122G-JM turbofan engines with engine serial numbers (ESNs) P770450 to P770614, inclusive, with diffuser case air seal assembly, part number (P/N) 30G4993-01, the HPT 2nd-stage vane assembly, P/N 30G7572, and HPT 2nd-stage borescope stator vane assembly, P/N 30G7672, installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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