# AD 71-25-07: Fuel Nozzle Support Assemblies

- Type: Airworthiness directive
- Status: Current
- Products: Pratt & Whitney Division JT8D-1, JT8D-11, JT8D-1A, JT8D-7, JT8D-7A and JT8D-9
- Effective: December 14, 1971
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-1354
- Registered aircraft: 100 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BBD3422281B4BCF58625685B00687928.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/71-25-07

## The airworthiness directive

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.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E2EA](https://openairdocs.org/tcds/E2EA): Pratt & Whitney; names 6 of 16 models: JT8D-1, JT8D-7, JT8D-11, JT8D-9, JT8D-7A, JT8D-1A

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 100 (0 by airframe model, 100 by engine model)
- Makers: Mcdonnell Douglas 79, Boeing 19, Douglas 2

Models with the most aircraft:

- [Pratt & Whitney JT8D series](https://openairdocs.org/engine/pratt-whitney-jt8d-series): 82 aircraft (engine model)
- [Pratt & Whitney JT8D-9 series](https://openairdocs.org/engine/pratt-whitney-jt8d-9-series): 9 aircraft (engine model)
- [Pratt & Whitney JT8D-1](https://openairdocs.org/engine/pratt-whitney-jt8d-1): 8 aircraft (engine model)
- [Pratt & Whitney JT8D-9](https://openairdocs.org/engine/pratt-whitney-jt8d-9): 1 aircraft (engine model)

All 4 models: https://openairdocs.org/ad/71-25-07/models.md
Every aircraft: https://openairdocs.org/ad/71-25-07/aircraft.md

Its text cites no advisory circulars or STCs.

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