AD 78-07-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 542-10 | ROLLS ROYCE, LTD. Models Dart 542-4, 542-10, and 543-10 Engines Series |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 542-4 | ROLLS ROYCE, LTD. Models Dart 542-4, 542-10, and 543-10 Engines Series |
Unsafe Condition
Excessive wear in flame tube liners and suspension pins may result in loss of flame tube support causing overheating and failure of the turbine rotors.
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Required Actions
Within 500 hours engine time in service after the effective date, inspect flame tube liners and suspension pins for wear per RR SB 72-431 or FAA-approved equivalent. If wear exceeds limits, replace affected parts before further flight and reinspect per AD paragraphs (c) or (d). Establish fleet repetitive inspection intervals based on wear levels and records.
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Compliance Time
Within the next 500 hours engine time in service after the effective date of this AD
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Affected Aircraft
Rolls-Royce Ltd. Dart 542-4, 542-10, and 543-10 engines with Modifications 1243, 1244, 1432, 1448, or 1607, used on Convair 600/640 and Nihon YS-11/YS-11A series 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
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