AD 2008-18-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Rolls-Royce plc (RR) RB211 Trent 500, 700, and 800 Series Turbofan Engines |
Unsafe Condition
IP Compressor Rotor rear balance land cracking on an in-service Trent 800 engine, which stress analysis shows may threaten rotor integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the IP Compressor rotor rear balance land for cracks on Trent 800 engines within 400 flight cycles of the AD's effective date. For Trent 500, 700, and 800 engines, inspect the same area during each shop visit when the engine is sufficiently disassembled.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 400 flight cycles of the AD's effective date for Trent 800 engines. For Trent 500, 700, and 800 engines, at each shop visit.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 560-61, 560A2-61, 768-60, 772-60, 772B-60, 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines, installed on Airbus A330, A340-500, A340-600, and Boeing 777 series airplanes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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