# AD 51-28-03: Fuel Valve Placard

- Type: Airworthiness directive
- Status: Current
- Products: Ryan Aeronautical ST-3KR
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 117 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/742658C9985618D886256A54006DE585.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/51-28-03

## The airworthiness directive

51-28-03 RYAN: Applies to All Model ST-3KR (Military PT-22) Aircraft.

To be accomplished by February 1, 1952, or next 100-hour inspection, whichever is first.

The fuel selector valve handles for these aircraft are usually placarded "Always take off with fuel feeding from Reserve". However, there have been fatal accidents which resulted from failure to observe this procedure, or from failure to return to the Reserve position when landing with a low fuel supply. Therefore, the following placard must be installed, or the existing placard revised to read: "Always take off and land with fuel feeding from RESERVE".

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-749](https://openairdocs.org/tcds/A-749): Ryan Aeronautical Company; names 1 of 1 models: ST-3KR

## 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: 117 (117 by airframe model, 0 by engine model)
- Makers: Ryan Aeronautical 117

Models with the most aircraft:

- [Ryan Aeronautical ST3KR](https://openairdocs.org/model/ryan-aeronautical-st3kr): 117 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/51-28-03/models.md
Every aircraft: https://openairdocs.org/ad/51-28-03/aircraft.md

Its text cites no advisory circulars or STCs.

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