AD 86-11-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15 | ROLLS-ROYCE LIMITED Models Spey 555-15, -15H, - 15N, and -15P Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15H | ROLLS-ROYCE LIMITED Models Spey 555-15, -15H, - 15N, and -15P Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15N | ROLLS-ROYCE LIMITED Models Spey 555-15, -15H, - 15N, and -15P Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 555-15P | ROLLS-ROYCE LIMITED Models Spey 555-15, -15H, - 15N, and -15P Engines |
Unsafe Condition
Failure of the stage 12 high pressure compressor (HPC) disk, stage 12 HPC rotor seal, and low pressure compressor (LPC) drive shaft (Pre-Mod. 4927).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove stage 12 HPC disks and rotor seals, and LPC drive shafts (Pre-Mod. 4927) from service on or before accumulating the specified cyclic lives (flights). Parts exceeding specified flight cycles must be removed prior to further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
On or before accumulating the cyclic lives (flights) specified in the AD, or prior to further flight if already exceeded.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce Limited Spey 555-15, -15H, -15N, and -15P engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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