AD 95-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce plc | RB211-524B-02 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
| engine | Rolls-Royce plc | RB211-524B-B-02 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
| engine | Rolls-Royce plc | RB211-524B2-19 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
| engine | Rolls-Royce plc | RB211-524B2-B-19 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
| engine | Rolls-Royce plc | RB211-524B3-02 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
| engine | Rolls-Royce plc | RB211-524C2-19 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
| engine | Rolls-Royce plc | RB211-524C2-B-19 | Rolls-Royce, plc (R-R) Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 Engines |
Unsafe Condition
Release of the stage 2 nozzle guide vane (NGV) seal ring could result in rotor contact, severance of the rotor drive arm, and an uncontained engine failure.
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Required Actions
Modify the NGV assembly in accordance with Rolls-Royce Mandatory Service Bulletin RB.211-72-9672, Revision 1, at the next shop visit or by specific deadlines depending on aircraft type (9 months for Boeing 747 series, 20 months for Lockheed L-1011 series).
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Compliance Time
Not later than 9 months after the effective date of this AD for Boeing 747 series engines, and 20 months for Lockheed L-1011 series engines, whichever occurs first with the next shop visit.
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Affected Aircraft
Rolls-Royce, plc Models RB211-524B-02, -524B-B-02, -524B3-02, -524B2-19, -524B2-B-19, -524C2-19, and -524C2-B-19 engines installed on Boeing 747 and Lockheed L-1011 series aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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