# AD 49-03-01: AC Fuel Pump

- Type: Airworthiness directive
- Status: Current
- Products: Sky Enterprises RC-3
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Registered aircraft: 126 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/899AE3416BAFB0E886256A560066C51E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/49-03-01

## The airworthiness directive

49-03-01 REPUBLIC: Applies to Model RC-3 Aircraft.

Compliance required by December 1, 1949.

To prevent possible failure of the diaphragms in the two AC fuel pumps on Franklin Model 6A8-215-B8F and -B9F engines and to provide a drain line to carry fuel away from the engine compartment in case of a diaphragm failure replace the fuel pumps with new fuel pumps, AMI P/N 15438 and 15439, and install drain lines. Aircooled Motors, Inc., Kit P/N 15464 contains parts and instructions for making these replacements.

(Franklin Service Bulletin No. 71 covers this same subject.)

This supersedes AD 48-26-02.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A-769](https://openairdocs.org/tcds/A-769): Sky Enterprises Inc.; names 1 of 1 models: RC-3

## 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: 126 (126 by airframe model, 0 by engine model)
- Makers: Republic 122, Downer 2, Republic Aviation Corp USA 1, Simuflight Seattle-1-Stol 1

Models with the most aircraft:

- [Republic RC-3](https://openairdocs.org/model/republic-rc-3): 122 aircraft (airframe model)
- [Downer RC-3](https://openairdocs.org/model/downer-rc-3): 2 aircraft (airframe model)
- [Republic Aviation Corp USA SEABEE RC-3](https://openairdocs.org/model/republic-aviation-corp-usa-seabee-rc-3): 1 aircraft (airframe model)
- [Simuflight Seattle-1-Stol RC-3](https://openairdocs.org/model/simuflight-seattle-1-stol-rc-3): 1 aircraft (airframe model)

All 4 models: https://openairdocs.org/ad/49-03-01/models.md
Every aircraft: https://openairdocs.org/ad/49-03-01/aircraft.md

Its text cites no advisory circulars or STCs.

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