AD 2001-13-28
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | Limited | Airworthiness Directives; Rolls-Royce Limited, Aero Division-Bristol, S.N.E.C.M.A. Olympus 593 Mk. 610-14-28 Turbofan Engines |
Unsafe Condition
Failure of the low-oil pressure (LOP) switch cable at the LOP switch connector can result in increased secondary damage after an LP compressor blade failure, leading to rotor imbalance, oil tank cracking, and loss of engine oil. The failure of the LOP switch cable prevents LOP warnings, delaying engine shutdown and causing LP and HP rotor thrust bearings to fail from oil starvation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a revised LOP switch incorporating an extended support bush in combination with an angled backshell and additional cable slack, in accordance with the accomplishment instructions of RR Service Bulletin OL.593-71-9056-33, Revision 2, dated December 7, 2000.
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Compliance Time
Within 50 flight hours after the effective date of the AD.
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Affected Aircraft
Rolls-Royce Limited, Aero Division-Bristol, S.N.E.C.M.A. Olympus 593 Mk. 610-14-28 turbofan engines, installed on, but not limited to, Concorde 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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