AD 2006-03-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc RB211 Trent 553-61 | Airworthiness Directives; Rolls-Royce plc RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 Turbofan Engines |
Unsafe Condition
Missing HPT rear seal plate locking plugs, damage to the HPT disc, and damage to the remaining locking plug retaining wires.
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Required Actions
Borescope-inspect for missing HPT rear seal plate locking plugs and damaged locking plug retaining wires. Remove engines from service based on the number of HPT locking plugs with acceptable locking plug retaining wires installed.
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Compliance Time
Within 500 to 1,000 cycles-since-new (CSN) or cycles-since-overhaul where the locking plug wires were replaced.
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Affected Aircraft
Rolls-Royce plc RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 turbofan engines that have not incorporated RR Service Bulletin (SB) No. RB.211-72-E767.
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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