AD 97-02-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce plc | RB211-535E4-37 | ROLLS-ROYCE PLC Models RB211-535E4 and -535E4-B Engines |
| engine | Rolls-Royce plc | RB211-535E4-B-37 | ROLLS-ROYCE PLC Models RB211-535E4 and -535E4-B Engines |
| engine | Rolls-Royce plc | RB211-535E4-B-75 | ROLLS-ROYCE PLC Models RB211-535E4 and -535E4-B Engines |
Unsafe Condition
Compressor stall and subsequent engine rundown on one or both engines due to an improperly set minimum compressor discharge P4 stop setting in the fuel flow governor (FFG).
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Required Actions
Install a fuel flow governor (FFG) with a revised minimum compressor discharge P4 stop setting per R-R Mandatory Service Bulletin RB.211-73-B869, Revision 1. Ensure improved FFGs are installed on both engines for each Boeing 757 aircraft to terminate AD 96-04-11 requirements.
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Compliance Time
No later than 9 calendar months after the effective date of this AD
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Affected Aircraft
Rolls-Royce plc Models RB211-535E4 and -535E4-B turbofan engines installed on Boeing 757-200 series aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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