AD 93-15-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 506 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 510 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 511 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 511-7E | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 514 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 514-7 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525F | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 526 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 527 | ROLLS-ROYCE, PLC Models Dart Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552 Series Engines |
Unsafe Condition
Failure of the servo fuel pipe could result in a loss of engine power, inflight engine shutdown, or engine fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 30 days after the effective date, visually inspect the servo fuel pipe (P/N RK18596A, RK18668A, or RU21444A) using the criteria in Rolls-Royce ASB Da73-A86 Appendix. Replace any non-compliant servo fuel pipe with a serviceable part before further flight. Engines not in service on the effective date must complete these actions prior to entry into service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce, plc Dart series turboprop engines: Mk. 506, 510, 511, 514, 515, 520, 525, 526, 527, 528, 529, 530, 532, 533, 534, 535, 536, 542, 543, 550, and 552, installed on Convair 600/640, Fokker F27/F227, Grumman Gulfstream 1, Hawker Siddeley 748, and Vickers Viscount aircraft.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.