# AD 85-11-52 R1: Approved Fuel

- Type: Airworthiness directive
- Status: Current
- Products: Boeing 737-300 Series
- Effective: August 6, 1985
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-5105
- Registered aircraft: 8 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1088D36F99394FED862568A900709EE4.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/85-11-52-R1

## The airworthiness directive

85-11-52 R1 BOEING: Amendment 39-5105. Applies to Model 737-300 series airplanes equipped with Plessey Type 8240 Mark 1, 2, or 3 fuel boost pumps or TRW 10-60533-1 fuel boost pumps, certificated in any category.

To prevent engine flameouts during climb, accomplish the following, unless already accomplished:

1. Before further flight ensure that the fuel being used is one of the following types: o Jet A or A1 conforming to specification ASTM-D-1655; o JP5 conforming to MIL-T-5624; o Fuels conforming to DERD 2494 or 2498; or o Fuels conforming to AIR 3404 or 3405.

2. Within 48 hours incorporate the following information into the Limitations Section of the Airplane Flight Manual and provide to crews:

"The only approved fuels are Jet A and A1 conforming to Specification ASTM-D-1655, JP5 conforming to MIL-T-5624, fuels conforming to DERD 2494 or 2498, and fuels conforming to AIR 3404 or 3405."

3. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

NOTE: Compliance with paragraph 2. of this directive may be effected by including a copy of this AD in the Airplane Flight Manual and Operating Manual.

This amendment becomes effective August 6, 1985. It was effective earlier to all recipients of telegraphic AD 85-11-52, issued June 7, 1985, which contained this amendment.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A16WE](https://openairdocs.org/tcds/A16WE): The Boeing Company; names 1 of 16 models: 737-300 Series

## 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: 8 (8 by airframe model, 0 by engine model)
- Makers: Boeing 8

Models with the most aircraft:

- [Boeing 737-300](https://openairdocs.org/model/boeing-737-300): 4 aircraft (airframe model)
- [Boeing 737-301](https://openairdocs.org/model/boeing-737-301): 1 aircraft (airframe model)
- [Boeing 737-306](https://openairdocs.org/model/boeing-737-306): 1 aircraft (airframe model)
- [Boeing 737-319](https://openairdocs.org/model/boeing-737-319): 1 aircraft (airframe model)
- [Boeing 737-330](https://openairdocs.org/model/boeing-737-330): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/85-11-52-R1/models.md
Every aircraft: https://openairdocs.org/ad/85-11-52-R1/aircraft.md

Its text cites no advisory circulars or STCs.

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.