AD 2015-17-21
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Failure of the high-pressure turbine (HPT) disk, which could result in uncontained disk release, damage to the engine, and damage to the airplane.
Required Actions
Use Task 05-00-01-800-000, "Recording and Control of the Lives of Parts", dated July 1, 2015, of the Rolls-Royce (RR) RB211-535E4-37/23 Time Limits Manual (TLM), publication reference T-211(535)-6RR, Revision 49, dated July 1, 2015 to determine the new life limits for the affected engine models and configurations, with the exception of those engine models mentioned in paragraph (e)(2) of this AD. Remove each HPT disk before exceeding its applicable life limit as specified in Task 05-00-01-800-000, "Recording and Control of the Lives of Parts", dated July 1, 2015, of the RR RB211-535E4-37/23 TLM, publication reference T-211(535)-6RR, Revision 49, dated July 1, 2015; and Task 05-10-01-800-000, "Group A Parts Lives--CONFIG-1", dated July 1, 2014, of the RR RB211-535E4-37/23 TLM, publication reference T-211(535)-6RR, Revision 49, dated July 1, 2015. Install an HPT disk eligible for installation.
Compliance Time
Within the compliance times specified, unless already done.
Affected Aircraft
All Rolls-Royce plc (RR), RB211-535E4-37, RB211-535E4-B-37, and RB211-535E4-C-37 turbofan engines.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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