AD 76-26-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce plc | RB211-22B-02 | ROLLS-ROYCE (1971) LTD Model RB.211-22B Engines |
| engine | Rolls-Royce plc | RB211-22B/MOD 72-8700 | ROLLS-ROYCE (1971) LTD Model RB.211-22B Engines |
Unsafe Condition
H.P. turbine disc failure from cracks in the disc bore surface
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the H.P. disc bore in accordance with Rolls-Royce Alert Service Bulletin RB.211-72-A4303 or FAA-approved equivalent, with specific compliance intervals based on flight cycles. Replace non-serviceable discs before further flight with approved reworked or serviceable discs.
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Compliance Time
within the specified flight cycles after the effective date of this AD (January 3, 1977)
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Affected Aircraft
Rolls-Royce (1971) LTD Model RB.211-22B engines with specific H.P. disc serial numbers as listed in the AD, including RB211-22B-02 and RB211-22B/MOD 72-8700 models
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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