AD 74-26-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Canada Corp. | JT15D-1 | PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED Model JT15D-1 and JT15D-4 Engines |
| engine | Pratt & Whitney Canada Corp. | JT15D-4 | PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED Model JT15D-1 and JT15D-4 Engines |
Unsafe Condition
Fuel leaks due to possible interference between the fuel outlet housing (P/N 3240082) and the fuel control main body (P/N 3240451).
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Required Actions
Inspect fuel control units using a .003 inch feeler gauge between the mating faces of the fuel outlet housing and fuel control main body. Replace fuel control units if the feeler gauge can be inserted between the mating faces prior to next flight.
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Compliance Time
within the next 25 hours time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Pratt & Whitney Aircraft and United Aircraft of Canada Limited JT15D-1 and JT15D-4 turbofan engines with fuel control part numbers 3022332 and 3023349
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Federal Register Abstract
Fuel Control Units
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_74-26-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-26-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED Model JT15D-1 and JT15D-4 Engines Subject: Fuel Control Units Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/02/1975 Make: Pratt & Whitney Canada Corp. Model: JT15D-1 | JT15D-4 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 74-26-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2046 AD NUMBER: 74-26-05 SUBJECT HEADING: PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED Model JT15D-1 and JT15D-4 Engines ACTION: SUMMARY: DATES: Effective January 2, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-26-05 PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED: Amendment 39-2046. Applies to all Pratt & Whitney Aircraft and United Aircraft of Canada Limited JT15D-1 and JT15D-4 turbofan engines containing fuel control P/Ns 3022332 and 3023349. Compliance required within the next 25 hours time in service after the effective date of this AD unless already accomplished. To prevent fuel leaks, inspect fuel control units for possible interference between the fuel outlet housing and the fuel control main body by placing a .003 inch feeler gage between the mating faces of the fuel outlet housing (P/N 3240082) and the fuel control main body (P/N 3240451). If the feeler gage can be inserted between the mating faces, replace fuel control with dimensionally correct fuel control prior to next flight. United Aircraft of Canada Limited's Special Instruction No. 3-74, dated September 20, 1974, pertains to this subject. This amendment becomes effective January 2, 1975. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_74-26-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 74-26-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED Model JT15D-1 and JT15D-4 Engines Subject: Fuel Control Units Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 01/02/1975 Make: Pratt & Whitney Canada Corp. Model: JT15D-1 | JT15D-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: Updated RGL applicability to match AD applicability; CAR C-11-185 AIRWORTHINESS DIRECTIVES FINAL RULES: 74-26-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-2046 AD NUMBER: 74-26-05 SUBJECT HEADING: PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED Model JT15D-1 and JT15D-4 Engines ACTION: SUMMARY: DATES: Effective January 2, 1975. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 74-26-05 PRATT & WHITNEY AIRCRAFT and UNITED AIRCRAFT OF CANADA, LIMITED: Amendment 39-2046. Applies to all Pratt & Whitney Aircraft and United Aircraft of Canada Limited JT15D-1 and JT15D-4 turbofan engines containing fuel control P/Ns 3022332 and 3023349. Compliance required within the next 25 hours time in service after the effective date of this AD unless already accomplished. To prevent fuel leaks, inspect fuel control units for possible interference between the fuel outlet housing and the fuel control main body by placing a .003 inch feeler gage between the mating faces of the fuel outlet housing (P/N 3240082) and the fuel control main body (P/N 3240451). If the feeler gage can be inserted between the mating faces, replace fuel control with dimensionally correct fuel control prior to next flight. United Aircraft of Canada Limited's Special Instruction No. 3-74, dated September 20, 1974, pertains to this subject. This amendment becomes effective January 2, 1975. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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