AD 2013-02-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc | Airworthiness Directives; Rolls-Royce plc Turbofan Engines |
Unsafe Condition
Damage to the oil baffle seals in the fuel oil heat exchanger (FOHE), part number 47111-1241, can cause seal material to block the restrictor hole in the Tail Bearing Housing (TBH) cover plate, leading to oil starvation in the low pressure (LP) and intermediate pressure (IP) location bearings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the FOHE within 500 engine hours (EHs) from the effective date of the AD, or before exceeding 5,000 EHs time since new (TSN) or time since overhaul (TSO), whichever occurs later. Do not approve engines with FOHE exceeding 5,000 EHs TSN or TSO for return to service. Do not install a FOHE with 5,000 or more EHs TSN or TSO on any engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 500 engine hours from the effective date of the AD, or before exceeding 5,000 EHs TSN or TSO, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211-Trent 970-84, 970B-84, 972-84, 972B-84, 977-84, 977B-84, and 980-84 turbofan engines with a fuel oil heat exchanger (FOHE), part number 47111-1241, installed.
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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