# AD 70-15-03: Fuel Selector Valve

- Type: Airworthiness directive
- Status: Current
- Products: Textron 19A, 23, A23, A23-19, A23-24, A23A and B23
- Effective: July 21, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-1037
- Registered aircraft: 579 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9B24985BB9638F0C86256A080071ACB9.0001
- DRS record last changed: January 21, 2026
- Page: https://openairdocs.org/ad/70-15-03

## The airworthiness directive

70-15-03 BEECH: Amdt. 39-1037. Applies to Models 23, A23, A23A and B23 (Serial Numbers M-1 through M-1162); A23-24 (Serial Numbers MA-1 through MA-333); and A23-19 and 19A (Serial Numbers MB-1 through MB-392) Airplanes.

Compliance: Required as indicated, unless already accomplished.

To prevent stiff operation, binding and seizing of Beech P/N 169-920000-127 fuel selector valve assembly, accomplish the following:

Within 25 hours' time in service after the effective date of this AD, modify Beech P/N 169-920000-127 fuel selector valve assembly in accordance with Beechcraft Service Instructions No. 0364-289, or later FAA approved revision, or an equivalent method approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.

This amendment becomes effective July 21, 1970.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A1CE](https://openairdocs.org/tcds/A1CE): Textron Aviation Inc.; names 7 of 14 models: A23-24, A23, A23-19, B23, 23, A23A, 19A

## 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: 579 (579 by airframe model, 0 by engine model)
- Makers: Beech 579

Models with the most aircraft:

- [Beech 23](https://openairdocs.org/model/beech-23): 147 aircraft (airframe model)
- [Beech A23-24](https://openairdocs.org/model/beech-a23-24): 121 aircraft (airframe model)
- [Beech A23](https://openairdocs.org/model/beech-a23): 85 aircraft (airframe model)
- [Beech A23-19](https://openairdocs.org/model/beech-a23-19): 72 aircraft (airframe model)
- [Beech B23](https://openairdocs.org/model/beech-b23): 62 aircraft (airframe model)
- [Beech A23A](https://openairdocs.org/model/beech-a23a): 51 aircraft (airframe model)
- [Beech 19A](https://openairdocs.org/model/beech-19a): 41 aircraft (airframe model)

All 7 models: https://openairdocs.org/ad/70-15-03/models.md
Every aircraft: https://openairdocs.org/ad/70-15-03/aircraft.md

Its text cites no advisory circulars or STCs.

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