# AD 49-07-03: Fuel System Placard

- Type: Airworthiness directive
- Status: Current
- Products: Consolidated Vultee Aircraft Corporation, Stinson Division BT-13, BT-13A (Army SNV-1) and BT-13B (Navy SNV-2)
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 98 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D13563737B3B8A3B86256A380059EFC2.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/49-07-03

## The airworthiness directive

49-07-03 CONVAIR: Applies to All BT-13 Series Aircraft.

Compliance required not later than April 1, 1949.

Several accidents have occurred in the above model aircraft from engine stoppage on take-offs and landings when operating on the right tank standpipe outlet with the fuel in the tank down to the level of the standpipe.

Such engine stoppages have occurred because pilots not fully familiar with the fuel system have misinterpreted the right tank fuel gage as indicating total available fuel quantity with selector valve on Right Hand Main (standpipe) position, unaware that the change to Reserve or Left Hand Main position must be made before the fuel level in the right tank drops to 17 gallons.

To preclude the possibility of pilot error with regard to the foregoing, the following placard shall be installed with each cockpit:

"CAUTION: Unless Right Tank is full, use Reserve or Left Tank for Takeoff and Landing."

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-2-571](https://openairdocs.org/tcds/A-2-571): Consolidated Vultee Aircraft Corporation Stinson Division; names 3 of 4 models: BT-13B (Navy SNV-2), BT-13, BT-13A (Army SNV-1)

## 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: 98 (98 by airframe model, 0 by engine model)
- Makers: Consolidated Vultee 74, Convair 17, Cons Vultee/Basinger 1, Cons Vultee/Lacey 1, Cons Vultee/Pittman 1, Consolidated Vultee/Gunderson 1, Consolidated Vultee/Vanech 1, Consolidated/Nocco C 1, Vultee/Reed Ron 1

Models with the most aircraft:

- [Consolidated Vultee BT-13A](https://openairdocs.org/model/consolidated-vultee-bt-13a): 56 aircraft (airframe model)
- [Convair BT-13A](https://openairdocs.org/model/convair-bt-13a): 11 aircraft (airframe model)
- [Consolidated Vultee BT-13B (SNV-2)](https://openairdocs.org/model/consolidated-vultee-bt-13b-snv-2): 11 aircraft (airframe model)
- [Consolidated Vultee BT-13](https://openairdocs.org/model/consolidated-vultee-bt-13): 7 aircraft (airframe model)
- [Convair BT-13](https://openairdocs.org/model/convair-bt-13): 3 aircraft (airframe model)
- [Convair BT-13B](https://openairdocs.org/model/convair-bt-13b): 3 aircraft (airframe model)
- [Consolidated/Nocco C VULTEE BT-13](https://openairdocs.org/model/consolidated-nocco-c-vultee-bt-13): 1 aircraft (airframe model)
- [Cons Vultee/Pittman BT13](https://openairdocs.org/model/cons-vultee-pittman-bt13): 1 aircraft (airframe model)
- [Consolidated Vultee/Gunderson BT-13A](https://openairdocs.org/model/consolidated-vultee-gunderson-bt-13a): 1 aircraft (airframe model)
- [Consolidated Vultee/Vanech BT-13A](https://openairdocs.org/model/consolidated-vultee-vanech-bt-13a): 1 aircraft (airframe model)
- [Cons Vultee/Basinger BT-13A](https://openairdocs.org/model/cons-vultee-basinger-bt-13a): 1 aircraft (airframe model)
- [Cons Vultee/Lacey BT-13B](https://openairdocs.org/model/cons-vultee-lacey-bt-13b): 1 aircraft (airframe model)
- [Vultee/Reed Ron BT-13A](https://openairdocs.org/model/vultee-reed-ron-bt-13a): 1 aircraft (airframe model)

All 13 models: https://openairdocs.org/ad/49-07-03/models.md
Every aircraft: https://openairdocs.org/ad/49-07-03/aircraft.md

Its text cites no advisory circulars or STCs.

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