AD 67-27-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 542-10 | ROLLS-ROYCE Model Dart Model 542-4 and 542-10 Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | Dart 542-4 | ROLLS-ROYCE Model Dart Model 542-4 and 542-10 Engines |
Unsafe Condition
Failure of fuel and oil hoses due to cracks and crazing.
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Required Actions
Inspect fuel and oil pressure indicator hoses with specific part numbers for cracks and crazing at specified intervals. Replace hoses if cracking or crazing is detected before further flight. Discontinue inspections after incorporating approved Modifications 1467 (fuel hoses) or 1453 (oil pressure indicator hoses).
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Compliance Time
Compliance required as indicated, unless already accomplished.
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Affected Aircraft
Rolls-Royce Dart Model 542-4 and 542-10 engines.
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Federal Register Abstract
Fuel and Oil Hoses
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_67-27-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-27-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: ROLLS-ROYCE Model Dart Model 542-4 and 542-10 Engines Subject: Fuel and Oil Hoses Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/03/1967 Make: Rolls-Royce Deutschland Ltd & Co KG Model: Dart 542-10 | Dart 542-4 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 67-27-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-488 AD NUMBER: 67-27-06 SUBJECT HEADING: ROLLS-ROYCE Model Dart Model 542-4 and 542-10 Engines ACTION: SUMMARY: DATES: Effective October 3, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-27-06 ROLLS-ROYCE: Amdt. 39-488 Part 39 Federal Register October 3, 1967. Applies to Dart Model 542-4 and 542-10 engines. Compliance required as indicated, unless already accomplished. To prevent failure of fuel and oil hoses, accomplish the following: (a) For fuel hoses, P/N's RU.21448, RK.38339A, RK.29902, RK.38340A, RU.21447, RK.29900A, RK.38361, RU.21455A, RK.29901A, and oil pressure indicator hose P/N RU.21440A, with 700 or more hours total time in service on the effective date of this AD, within the next 100 hours' time in service after the effective date of this AD and thereafter at intervals not to exceed 150 hours' time in service from the last inspection, inspect for cracks and crazing in accordance with Rolls-Royce Alert Service Bulletin Da 73-A49 or later ARB- approved issue, or an FAA-approved equivalent. (b) For fuel hoses, P/N's RU.21448, RK.38339A, RK.29902, RK.38340A, RU.21447, RK.29900A, RK.38361, RU.21455A, RK.29901A, and oil pressure indicator hose P/N RU.21440A, with less than 700 hours' time in service on the effective date of this AD, before the accumulation of 800 hours' time in service and thereafter at intervals not to exceed 150 hours' time in service from the last inspection, inspect for cracks and crazing in accordance with Rolls-Royce Alert Service Bulletin Da 73-A49 or later ARB-approved issue, or an FAA-approved equivalent. (c) If cracking or crazing of the hose is detected during the inspections required by (a) and (b), before further flight, replace with a new assembly. (d) The repetitive inspections required under (a) or (b) for the fuel hoses may be discontinued following the incorporation of ARB-approved Rolls-Royce Modification 1467, or an FAA-approved equivalent. (e) The repetitive inspections required under (a) or (b) for the oil pressure indictor hoses may be discontinued following the incorporation of ARB-approved Rolls-Royce Modification 1453, or an FAA-approved equivalent. This amendment effective October 3, 1967. FOOTER:
Document Text
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AD Final Rules - DRS_67-27-06.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-27-06 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: ROLLS-ROYCE Model Dart Model 542-4 and 542-10 Engines Subject: Fuel and Oil Hoses Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 10/03/1967 Make: Rolls-Royce Deutschland Ltd & Co KG Model: Dart 542-10 | Dart 542-4 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 67-27-06 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-488 AD NUMBER: 67-27-06 SUBJECT HEADING: ROLLS-ROYCE Model Dart Model 542-4 and 542-10 Engines ACTION: SUMMARY: DATES: Effective October 3, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-27-06 ROLLS-ROYCE: Amdt. 39-488 Part 39 Federal Register October 3, 1967. Applies to Dart Model 542-4 and 542-10 engines. Compliance required as indicated, unless already accomplished. To prevent failure of fuel and oil hoses, accomplish the following: (a) For fuel hoses, P/N's RU.21448, RK.38339A, RK.29902, RK.38340A, RU.21447, RK.29900A, RK.38361, RU.21455A, RK.29901A, and oil pressure indicator hose P/N RU.21440A, with 700 or more hours total time in service on the effective date of this AD, within the next 100 hours' time in service after the effective date of this AD and thereafter at intervals not to exceed 150 hours' time in service from the last inspection, inspect for cracks and crazing in accordance with Rolls-Royce Alert Service Bulletin Da 73-A49 or later ARB- approved issue, or an FAA-approved equivalent. (b) For fuel hoses, P/N's RU.21448, RK.38339A, RK.29902, RK.38340A, RU.21447, RK.29900A, RK.38361, RU.21455A, RK.29901A, and oil pressure indicator hose P/N RU.21440A, with less than 700 hours' time in service on the effective date of this AD, before the accumulation of 800 hours' time in service and thereafter at intervals not to exceed 150 hours' time in service from the last inspection, inspect for cracks and crazing in accordance with Rolls-Royce Alert Service Bulletin Da 73-A49 or later ARB-approved issue, or an FAA-approved equivalent. (c) If cracking or crazing of the hose is detected during the inspections required by (a) and (b), before further flight, replace with a new assembly. (d) The repetitive inspections required under (a) or (b) for the fuel hoses may be discontinued following the incorporation of ARB-approved Rolls-Royce Modification 1467, or an FAA-approved equivalent. (e) The repetitive inspections required under (a) or (b) for the oil pressure indictor hoses may be discontinued following the incorporation of ARB-approved Rolls-Royce Modification 1453, or an FAA-approved equivalent. This amendment effective October 3, 1967. FOOTER:
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Retrieved: Apr 8, 2026
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