AD 66-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Limited | Gipsy Queen 30 MK.2 | BRISTOL SIDDELEY Model Gipsy Queen Series 30 Engines |
Unsafe Condition
Failure of the crankshaft front end could result in loss of the propeller.
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Required Actions
Inspect crankshaft for cracks within 25 hours' time in service after the AD's effective date per Bristol Siddeley TNS GQ30 No. 70 or equivalent. Replace cracked crankshafts before further flight. Incorporate Modification 2925 within 1,600 hours' time in service.
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Compliance Time
Within the specified time frames: inspection within 25 hours' time in service, replacement before further flight, and modification within 1,600 hours' time in service after the effective date.
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Affected Aircraft
Bristol Siddeley Model Gipsy Queen Series 30 Engines with Crankshafts with Modification 2036 or 2162 installed.
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Federal Register Abstract
Crankshaft
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_66-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BRISTOL SIDDELEY Model Gipsy Queen Series 30 Engines Subject: Crankshaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/28/1966 Make: Rolls-Royce Limited Model: Gipsy Queen 30 MK.2 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 66-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-186 AD NUMBER: 66-03-01 SUBJECT HEADING: BRISTOL SIDDELEY Model Gipsy Queen Series 30 Engines ACTION: SUMMARY: DATES: Effective January 28, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-03-01 BRISTOL SIDDELEY: Amdt. 39-186 Part 39 Federal Register January 28, 1966. Applies to de Havilland Model Gipsy Queen Series 30 Engines With Crankshafts With Modification 2036 or 2162 Installed. Compliance required as indicated. To prevent further failures of the crankshaft front end that could result in loss of the propeller, accomplish the following: (a) Unless already accomplished within the last 375 hours' time in service, inspect crankshaft for cracks within the next 25 hours' time in service after the effective date of this AD in accordance with Bristol Siddeley Technical News Sheet (TNS) GQ30 No. 70, dated November 16, 1965, or later ARB-approved issue, or an FAA- approved equivalent, and thereafter at intervals not to exceed 400 hours' time in service from the last inspection until modified in accordance with (c). (b) Replace cracked crankshafts before further flight with an uncracked crankshaft. (c) Incorporate Modification 2925 (which introduces shot peening underneath the chrome to improve the fatigue strength) on crankshaft within the next 1,600 hours' time in service after the effective date of this AD unless already accomplished. This directive effective January 28, 1966. FOOTER:
Document Text
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AD Final Rules - DRS_66-03-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 66-03-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: BRISTOL SIDDELEY Model Gipsy Queen Series 30 Engines Subject: Crankshaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/28/1966 Make: Rolls-Royce Limited Model: Gipsy Queen 30 MK.2 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: 66-03-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-186 AD NUMBER: 66-03-01 SUBJECT HEADING: BRISTOL SIDDELEY Model Gipsy Queen Series 30 Engines ACTION: SUMMARY: DATES: Effective January 28, 1966. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 66-03-01 BRISTOL SIDDELEY: Amdt. 39-186 Part 39 Federal Register January 28, 1966. Applies to de Havilland Model Gipsy Queen Series 30 Engines With Crankshafts With Modification 2036 or 2162 Installed. Compliance required as indicated. To prevent further failures of the crankshaft front end that could result in loss of the propeller, accomplish the following: (a) Unless already accomplished within the last 375 hours' time in service, inspect crankshaft for cracks within the next 25 hours' time in service after the effective date of this AD in accordance with Bristol Siddeley Technical News Sheet (TNS) GQ30 No. 70, dated November 16, 1965, or later ARB-approved issue, or an FAA- approved equivalent, and thereafter at intervals not to exceed 400 hours' time in service from the last inspection until modified in accordance with (c). (b) Replace cracked crankshafts before further flight with an uncracked crankshaft. (c) Incorporate Modification 2925 (which introduces shot peening underneath the chrome to improve the fatigue strength) on crankshaft within the next 1,600 hours' time in service after the effective date of this AD unless already accomplished. This directive effective January 28, 1966. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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