AD 63-07-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 506 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 510 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 511 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 511-7E | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 514 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 514-7 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525F | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 526 | ROLLS-ROYCE Model Dart Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 527 | ROLLS-ROYCE Model Dart Engines |
Unsafe Condition
Fatigue cracks originating around suspension pin soleplates in combustion chamber air casings of Pre-Modification 553 standard engines, leading to failures in service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install strengthened air casing incorporating Modification 553 standards, or install air casing straps using Mod. 612 or Mod. 1021 standards. Remove and replace Pre-Mod. 97 standard air casings at next engine overhaul.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours' time in service after the effective date of this AD
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Affected Aircraft
Rolls-Royce Model Dart engines with combustion chamber air casings not incorporating Modification 553 standards, except Pre-Modification 97 standards, and Pre-Mod. 97 standard air casings.
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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