AD 67-22-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | Spey 506-14 | ROLLS-ROYCE Model 506-14 Engines |
Unsafe Condition
Failure of the C.A.S.C. 105 and 125 Lucas fuel flow controls due to wear of the splines on the input drive assembly.
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Required Actions
Inspect the input drive assembly per Rolls-Royce Service Bulletin SP 73-A109 or FAA-approved equivalent. If wear is found, incorporate Modification 3258 or FAA-approved equivalent before further flight. Repeat inspections at intervals not exceeding 800 hours' time in service from the last inspection, with initial compliance deadlines based on existing time in service.
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Compliance Time
Within the next 100 hours' time in service after the effective date (August 25, 1967) for controls with 700+ hours, or before accumulating 800 hours' time in service for those with less than 700 hours. Overhauled units follow similar timelines based on post-overhaul time.
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Affected Aircraft
Rolls-Royce Spey Model 506-14 engines with C.A.S.C. 105 and 125 Lucas fuel flow controls, including those overhauled as specified.
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Federal Register Abstract
Fuel Flow Controls
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_67-22-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-22-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: ROLLS-ROYCE Model 506-14 Engines Subject: Fuel Flow Controls Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/25/1967 Make: Rolls-Royce Deutschland Ltd & Co KG Model: Spey 506-14 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 67-22-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-451 AD NUMBER: 67-22-08 SUBJECT HEADING: ROLLS-ROYCE Model 506-14 Engines ACTION: SUMMARY: DATES: Effective August 25, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-22-08 ROLLS-ROYCE: Amdt. No. 39-451, Part 39, Federal Register July 26, 1967. Applies to Spey Model 506-14 Engines. Compliance required as indicated, unless already accomplished. To prevent failure of the C.A.S.C. 105 and 125 Lucas fuel flow controls installed on Spey Model 506-14 engines due to wear of the splines on the input drive assembly, accomplish the following: (a) For fuel flow controls with 700 or more hours' total time in service on the effective date of this AD and that have not been overhauled, comply with paragraph (e) within the next 100 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (b) For fuel flow controls with less than 700 hours' total time in service on the effective date of this AD and that have not been overhauled, comply with paragraph (e) before the accumulation of 800 hours' total time in service, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (c) For fuel flow controls that have been overhauled and that on the effective date of this AD, have 700 or more hours' time in service since overhaul, comply with paragraph (e) within the next 100 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (d) For fuel flow controls that have been overhauled and that on the effective date of this AD have less than 700 hours' time in service since overhaul, comply with paragraph (e) before the accumulation of 800 hours' time in service since overhaul, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (e) Inspect the input drive assembly, in accordance with Rolls-Royce Service Bulletin Number SP 73- A109 dated February 2, 1967, or later ARB-approved issue, or FAA-approved equivalent. If wear is found, incorporate Rolls-Royce Modification 3258, or an FAA-approved equivalent, before further flight. (f) The repetitive inspection required by paragraphs (a) through (d) may be discontinued upon incorporation of Modification 3258, or an FAA-approved equivalent. This amendment effective August 25, 1967. FOOTER:
Document Text
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AD Final Rules - DRS_67-22-08.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 67-22-08 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: ROLLS-ROYCE Model 506-14 Engines Subject: Fuel Flow Controls Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 08/25/1967 Make: Rolls-Royce Deutschland Ltd & Co KG Model: Spey 506-14 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: 67-22-08 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-451 AD NUMBER: 67-22-08 SUBJECT HEADING: ROLLS-ROYCE Model 506-14 Engines ACTION: SUMMARY: DATES: Effective August 25, 1967. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 67-22-08 ROLLS-ROYCE: Amdt. No. 39-451, Part 39, Federal Register July 26, 1967. Applies to Spey Model 506-14 Engines. Compliance required as indicated, unless already accomplished. To prevent failure of the C.A.S.C. 105 and 125 Lucas fuel flow controls installed on Spey Model 506-14 engines due to wear of the splines on the input drive assembly, accomplish the following: (a) For fuel flow controls with 700 or more hours' total time in service on the effective date of this AD and that have not been overhauled, comply with paragraph (e) within the next 100 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (b) For fuel flow controls with less than 700 hours' total time in service on the effective date of this AD and that have not been overhauled, comply with paragraph (e) before the accumulation of 800 hours' total time in service, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (c) For fuel flow controls that have been overhauled and that on the effective date of this AD, have 700 or more hours' time in service since overhaul, comply with paragraph (e) within the next 100 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (d) For fuel flow controls that have been overhauled and that on the effective date of this AD have less than 700 hours' time in service since overhaul, comply with paragraph (e) before the accumulation of 800 hours' time in service since overhaul, and thereafter at intervals not to exceed 800 hours' time in service from the last inspection. (e) Inspect the input drive assembly, in accordance with Rolls-Royce Service Bulletin Number SP 73- A109 dated February 2, 1967, or later ARB-approved issue, or FAA-approved equivalent. If wear is found, incorporate Rolls-Royce Modification 3258, or an FAA-approved equivalent, before further flight. (f) The repetitive inspection required by paragraphs (a) through (d) may be discontinued upon incorporation of Modification 3258, or an FAA-approved equivalent. This amendment effective August 25, 1967. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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