AD 72-18-02 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 506 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 510 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 511 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 511-7E | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 514 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 514-7 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 525F | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 526 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 527 | ROLLS-ROYCE LTD Models DART Mk.506, 510, 511, 514, 515, 525 through 532 Series Engines |
Unsafe Condition
Stress, corrosion, cracking, and failure of fuel burner shroud nuts, P/N RK14285, on the fuel burner shroud assembly, P/N RK14283A, could occur.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect fuel burner shroud nuts for failure, cracks, and engraving symbols 'H' and 'C'. Replace assemblies with P/N RK14283A or equivalent if failures, cracks, or insufficient hardness (less than 321 Brinnel) are found. Inspect turbine, combustion chamber, discharge nozzle, and H.P. nozzle guide vanes for overheating/damage and repair as needed. Engrave symbols 'H' and 'C' on serrations if hardness meets requirements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce DART Mk.506, 510, 511, 514, 515, 525 through 532 series engines not incorporating Modifications 1625 or 1626 fuel burners.
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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