AD 86-24-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce plc | RB211-22B-02 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-22B/MOD 72-8700 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B-02 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B-B-02 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B2-19 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B2-B-19 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B3-02 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B4-02 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524B4-D-02 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
| engine | Rolls-Royce plc | RB211-524C2-19 | ROLLS-ROYCE plc (formerly Rolls-Royce Limited) Models RB211-22B and -524 Series Engines |
Unsafe Condition
Intermediate pressure compressor (IPC) rotor and turbine (IPT) disc uncontained failure due to overspeed events prior to August 13, 1982.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect or retire IPC rotors and IPT disks oversped beyond 115% N2 up to 120% N2 at first engine shop visit after effective date if accumulated 4,000+ cycles since overspeed. Reinspect at intervals not exceeding 4,500 cycles. Remove and retire cracked parts before further flight. Retire rotors/disks oversped over 120% N2 at first shop visit after effective date if accumulated 3,000+ cycles since overspeed. Apply more stringent requirements for multiple overspeeds. Treat gauge-read overspeeds beyond 110% N2 as exceeding 120% N2 under paragraph (b).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
First engine shop visit after the effective date of this AD, after having accumulated the specified cycles since overspeed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce plc RB211-22B and -524 series turbofan engines, including models RB211-22B-02, RB211-22B/MOD 72-8700, RB211-524B-02, RB211-524B-B-02, RB211-524B2-19, and others as listed in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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