AD 60-23-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT3C-6 | PRATT & WHITNEY Turbo Wasp JT3C-7 and JT3C-6 Engines |
| engine | Pratt & Whitney Division | JT3C-7 | PRATT & WHITNEY Turbo Wasp JT3C-7 and JT3C-6 Engines |
Unsafe Condition
Failure of the bevel accessory drive gearshaft and resultant loss of engine power
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace part number 350460 gearshaft with part number 401493 gearshaft
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at first engine overhaul after December 15, 1960
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Turbo Wasp JT3C-7 engines prior to serial number P632425B and all JT3C-6 engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Gearshaft
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_60-23-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 60-23-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY Turbo Wasp JT3C-7 and JT3C-6 Engines Subject: Gearshaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Pratt & Whitney Division Model: JT3C-6 | JT3C-7 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 60-23-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 60-23-04 SUBJECT HEADING: PRATT & WHITNEY Turbo Wasp JT3C-7 and JT3C-6 Engines ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 60-23-04 PRATT & WHITNEY: Amdt. 215 Part 507 Federal Register November 4, 1960. Applies to Turbo Wasp JT3C-7 Turbojet Engines Prior to Serial Number P632425B and all JT3C-6 Turbojet Engines. Compliance required at first engine overhaul after December 15, 1960. To prevent failure of the bevel accessory drive gearshaft and resultant loss of engine power, replace P/N 350460 gearshaft with P/N 401493 gearshaft. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_60-23-04.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 60-23-04 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY Turbo Wasp JT3C-7 and JT3C-6 Engines Subject: Gearshaft Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Pratt & Whitney Division Model: JT3C-6 | JT3C-7 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: 60-23-04 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 60-23-04 SUBJECT HEADING: PRATT & WHITNEY Turbo Wasp JT3C-7 and JT3C-6 Engines ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 60-23-04 PRATT & WHITNEY: Amdt. 215 Part 507 Federal Register November 4, 1960. Applies to Turbo Wasp JT3C-7 Turbojet Engines Prior to Serial Number P632425B and all JT3C-6 Turbojet Engines. Compliance required at first engine overhaul after December 15, 1960. To prevent failure of the bevel accessory drive gearshaft and resultant loss of engine power, replace P/N 350460 gearshaft with P/N 401493 gearshaft. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
Related Airworthiness Directives
59-10-09
final rulePRATT & WHITNEY Model Wasp JT3C-6 Engines
Unsafe Condition: Third-stage turbine blade failures due to use of P/N 271303 blades prior to change J-3 and P/N 371603 blades prior to change C-3.
60-22-02
final rulePRATT & WHITNEY Model JT3C-6 Engines
Unsafe Condition: Cracks on the rear face of the rear flange of the combustion chamber outer case assembly P/N 255639 (case detail P/N 255640) outboard of the attaching nuts, which could lead to combustion chamber f...
56-06-02
final rulePRATT & WHITNEY All Models Engines
Unsafe Condition: Cylinder flange attaching stud failures leading to engine fire due to cylinder failure, or loosening of attaching nuts causing clearance between nut and cylinder flange, resulting in severe overstr...