AD 71-25-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT8D-1 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-11 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-1A | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-7 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-7A | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
| engine | Pratt & Whitney Division | JT8D-9 | PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines |
Unsafe Condition
Failure of the fuel nozzle support assemblies from fatigue cracking in the base fillet.
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Required Actions
Alter all fuel nozzle support assembly part numbers 480735, 493332, 501725, or 523476 in accordance with P&WA Service Bulletin No. 3536 or equivalent method approved by the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region, or replace with superseding part number fuel nozzle support assembly.
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Compliance Time
Within the next 6000 hours' time in service after the effective date of this AD unless already accomplished
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Affected Aircraft
Pratt & Whitney Aircraft Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 engines incorporating fuel nozzle support assemblies with part numbers 480735, 493332, 501725, or 523476.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fuel Nozzle Support Assemblies
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_71-25-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-25-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines Subject: Fuel Nozzle Support Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/14/1971 Make: Pratt & Whitney Division Model: JT8D-1 | JT8D-11 | JT8D-1A | JT8D-7 | JT8D-7A | JT8D-9 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: 71-25-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1354 AD NUMBER: 71-25-07 SUBJECT HEADING: PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines ACTION: SUMMARY: DATES: Effective December 14, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-25-07 PRATT & WHITNEY AIRCRAFT: Amdt. 39-1354. Applies to all JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 turbofan engines which incorporate the following part numbers: 480735, 493332, 501725 and 523476 fuel nozzle support assemblies. To prevent failure of the fuel nozzle support assemblies from fatigue cracking in the base fillet accomplish the following: Within the next 6000 hours' time in service after the effective date of this AD unless already accomplished alter all fuel nozzle support assembly part numbers 480735, 493332, 501725 or 523476 in accordance with P&WA Service Bulletin No. 3536 or equivalent method approved by the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region, or replace with superseding part number fuel nozzle support assembly. Upon submission of substantiating data through an FAA Maintenance Inspector by an owner or operator, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the compliance time. This amendment is effective December 14, 1971. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_71-25-07.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 71-25-07 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines Subject: Fuel Nozzle Support Assemblies Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 12/14/1971 Make: Pratt & Whitney Division Model: JT8D-1 | JT8D-11 | JT8D-1A | JT8D-7 | JT8D-7A | JT8D-9 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: 71-25-07 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-1354 AD NUMBER: 71-25-07 SUBJECT HEADING: PRATT & WHITNEY AIRCRAFT Models JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 Engines ACTION: SUMMARY: DATES: Effective December 14, 1971. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 71-25-07 PRATT & WHITNEY AIRCRAFT: Amdt. 39-1354. Applies to all JT8D-1, JT8D-1A, JT8D-7, JT8D-7A, JT8D-9, JT8D-11 turbofan engines which incorporate the following part numbers: 480735, 493332, 501725 and 523476 fuel nozzle support assemblies. To prevent failure of the fuel nozzle support assemblies from fatigue cracking in the base fillet accomplish the following: Within the next 6000 hours' time in service after the effective date of this AD unless already accomplished alter all fuel nozzle support assembly part numbers 480735, 493332, 501725 or 523476 in accordance with P&WA Service Bulletin No. 3536 or equivalent method approved by the Chief, Engineering & Manufacturing Branch, FAA, Eastern Region, or replace with superseding part number fuel nozzle support assembly. Upon submission of substantiating data through an FAA Maintenance Inspector by an owner or operator, the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region may adjust the compliance time. This amendment is effective December 14, 1971. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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