AD 85-06-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525 | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525F | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 526 | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 527 | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 528-7E | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 528D-7E | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 529-7E | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 529-7H | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 529-8E | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 529-8H | ROLLS-ROYCE LIMITED Models Dart 525, 526, 527, 528, 529, 530, 531, 532, 535, and 551 Series Engines |
Unsafe Condition
Excessive wear in flame tube liners and suspension pins may lead to flame breakout from the combustion chamber and overheating and failure of the high pressure turbine disk rim.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect flame tube liners and suspension pins for wear at specified intervals per SB Da72-485 or Da72-470. Replace parts if wear exceeds acceptable limits. Incorporate Modification 1736, Part 2 at next flame tube overhaul for engines without it.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight for replacement actions. Incorporate Modification 1736, Part 2 at the next flame tube overhaul.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce Limited Dart engine series 525, 526, 527, 528, 529, 530, 531, 532, 535, 551, and variants without Modifications 1425, 1618, 1719, or 1723.
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.