AD 2010-20-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (RRD) Models Tay 620-15, Tay 650-15, and Tay 651-54 Turbofan Engines |
Unsafe Condition
The actual stress levels in the Tay 651-54 engine High Pressure Compressor (HPC) stages 1, 3, 6, 7, and 12 discs were higher than originally assumed, requiring reduced approved lives.
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Required Actions
Amend the approved Airworthiness Limitation Section to incorporate the new, reduced life limits for the specified HPC discs within 30 days after the effective date. Use Rolls-Royce Deutschland Ltd & Co KG Alert Non-Modification Service Bulletin TAY-72-A1740 for affected disc serial numbers on Tay 620-15 and Tay 650-15 engines.
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Compliance Time
Within 30 days after the effective date of this AD.
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Affected Aircraft
Rolls-Royce Deutschland Ltd & Co KG models Tay 620-15, Tay 650-15, and Tay 651-54 turbofan engines, installed on Fokker F28 Mark 0070 and Mark 0100 airplanes and Boeing 727 series airplanes.
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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