AD 56-02-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 506 | ROLLS-ROYCE Models Dart 506 and 510 Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 510 | ROLLS-ROYCE Models Dart 506 and 510 Engines |
Unsafe Condition
Low stage compressor impeller failure due to P/N's RK13782, RK17877, RK19795, RK20156, and RK20181.
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Required Actions
Remove all impellers with specified part numbers from service and do not reuse after maximum service time of 725 hours, unless modified with Rolls-Royce Modifications 335 and 348 allowing 750 hours. Replace impellers as required.
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Compliance Time
Compliance required as indicated. Operation beyond 750 hours total time is not authorized.
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Affected Aircraft
Rolls-Royce Deutschland Ltd & Co KG Dart 506 and 510 engines, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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