# AD 74-13-09: Fuel Pump Assemblies

- Type: Airworthiness directive
- Status: Current
- Products: Honeywell International TFE731-2
- Effective: July 31, 1974
- Superseded by: Nothing supersedes this AD
- Product type: Engine
- Amendment: 39-1903
- Registered aircraft: 1,026 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C981D289FAC4B89862568540074DC2E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/74-13-09

## The airworthiness directive

74-13-09 AIRESEARCH MANUFACTURING COMPANY OF ARIZONA: Amendment 39-1882 is further amended by Amendment 39-1903. Applies to Model TFE731-2-1C, and -2-2B engines installed in, but not limited to AMD Falcon 10 aircraft, certificated in all categories.

Compliance required within the next 50 hours time in service after the effective date of this AD, unless already accomplished, and prior to installing replacement fuel pump assemblies.

To detect the improper configuration of the fuel pump, accomplish the following:

  (a) Inspect the fuel pump assembly in accordance with the instructions contained in AiResearch Service Bulletin TFE731-73-3004, dated June 14, 1974, or later FAA-approved revisions.

  (b) The inspection prescribed in paragraph (a), above, need not be accomplished prior to the installation of replacement fuel pumps identified as P/N 3070851-7 and -8, or later dash number designations.

  (c) Equivalent procedures may be approved by the Chief, Aircraft Engineering Division, FAA Western Region, upon submission of adequate substantiation data.

  (d) Aircraft may be flown to a base for performance of maintenance required by this AD per FAR's 21.197 and 21.199.

Amendment 39-1882 became effective June 28, 1974. This Amendment, 39-1903 becomes effective July 31, 1974.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS E6WE](https://openairdocs.org/tcds/E6WE): Honeywell Aerospace US LLC; names 1 of 23 models: TFE731-2

## 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: 1,026 (0 by airframe model, 1,026 by engine model)
- Makers: Dassault-Breguet 174, Raytheon 152, Cessna 139, Learjet 138, Gates Learjet 119, Dassault 89, Israel Aircraft Industries 80, British Aerospace 48, Raytheon Corporate Jets 27, Gates Lear Jet 24

Models with the most aircraft:

- [Garrett TFE731 series](https://openairdocs.org/engine/garrett-tfe731-series): 694 aircraft (engine model)
- [Honeywell TFE-731-SER series](https://openairdocs.org/engine/honeywell-tfe-731-ser-series): 291 aircraft (engine model)
- [Alliedsign TFE731 series](https://openairdocs.org/engine/alliedsign-tfe731-series): 17 aircraft (engine model)
- [Honeywell TFE731-2](https://openairdocs.org/engine/honeywell-tfe731-2): 10 aircraft (engine model)
- [Honeywell TFE-731 series](https://openairdocs.org/engine/honeywell-tfe-731-series): 8 aircraft (engine model)
- [Alliedsign TFE731-2](https://openairdocs.org/engine/alliedsign-tfe731-2): 3 aircraft (engine model)
- [Garrett TFE731-2](https://openairdocs.org/engine/garrett-tfe731-2): 3 aircraft (engine model)

All 7 models: https://openairdocs.org/ad/74-13-09/models.md
Every aircraft: https://openairdocs.org/ad/74-13-09/aircraft.md

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.