# AD 53-01-02: Fuel Selector Valve Rework

- Type: Airworthiness directive
- Status: Current
- Products: Textron 35, A35, B35 and C35
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 831 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B5BE3CD64201CB3486256A0800733B78.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/53-01-02

## The airworthiness directive

53-01-02 BEECH: Applies to Models 35, A35, B35 and C35 Airplanes, Serial Numbers D-1 Through D-2900, Equipped With Beech 35-921171 or 35-924065 Fuel Selector Valve -Hand Pump Units.

Compliance required as soon as possible but not later than June 1, 1953.

To prevent binding or stiff operation of the fuel selector valve, accomplish inspections and rework in accordance with Beech service instructions as follows: (1) Install AN 934-6 "O" ring on indexing ball plug in place of lead washer, Beech P/N 105090-L-067-6-020, (2) Provide 1/32-inch clearance between selector valve cone and index ball retaining plug, (3) Install Beech 35-921217 spacer beneath fuel selector valve cone to restrict possible vertical cone movement to 1/32 inch. The 35-924065 and 35-921171 fuel units are identifiable by the feature permitting the fuel tank selector valve and hand emergency fuel pump to be operated by the same handle.

(Beech Service Bulletin 35-22, A35-16, B35-9, C35-7, dated October 1, 1952, covers this same subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-777](https://openairdocs.org/tcds/A-777): Textron Aviation Inc.; names 4 of 9 models: A35, B35, C35, 35

## 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: 831 (831 by airframe model, 0 by engine model)
- Makers: Beech 831

Models with the most aircraft:

- [Beech 35](https://openairdocs.org/model/beech-35): 266 aircraft (airframe model)
- [Beech C35](https://openairdocs.org/model/beech-c35): 258 aircraft (airframe model)
- [Beech A35](https://openairdocs.org/model/beech-a35): 159 aircraft (airframe model)
- [Beech B35](https://openairdocs.org/model/beech-b35): 148 aircraft (airframe model)

All 4 models: https://openairdocs.org/ad/53-01-02/models.md
Every aircraft: https://openairdocs.org/ad/53-01-02/aircraft.md

Its text cites no advisory circulars or STCs.

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