# TCDS TC 222: Franklin Engine Company

- Type: Type certificate data sheet
- Status: Current
- Holder: Franklin Engine Company
- Revision: 0
- Product: Engine
- Registered aircraft: 1, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/50/6e/506e97801847d746464cbbe8b3a982f909ba7496fd6b435944cef43af11c7661
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0E49DBC72463F0238525670C00569EEC.0001
- Page: https://openairdocs.org/tcds/TC%20222

## Models (1)

As the data sheet lists them.

- 6AC-264

## What the data sheet says

From the PDF's text layer, line by line; tables lose their columns. The PDF is the record.

```text
FRANKLIN ENGINE COMPANY
MODELS:  Aircooled Motors Franklin 6AC-264
T.C. NUMBER:  T.C. 222
Model - 6AC-264 F2, F3 D2, D3
Type 6HOA - - - -
Rating:
   Maximum continuous,
   hp, rpm, at S.L.
   press. alt. 120-2600-S.L. 110-2600-S.L.
   Take-off, hp, rpm,
   full throttle 120-2600 110-2600
Fuel (minimum octane
   aviation gasoline) 80 73
Bore and stroke, in. 4 x 3.5 - - - -
Displacement, cu. in. 264 - - - -
Compression ratio 7: 1 6.3: 1
Weight (dry), lbs. 248, 255 - - - -
C.G. location (with starter
   and generator) Forward of
   rear mount C.L., in. - - - -, 8.3 - - - -, 8.3
Propeller shaft Flanged hub - 8-7/16
   in. bolts - 5 in. circle - - - -
Carburetion Marvel MA-3 or MA-3 - - - -
   carburetor with 1-5/16
   in. venturi
Ignition, dual Eisemann AM6 or LA6 - - - -
   magnetos with impulse
   coupling (retard 25
   degrees)
Ignition timing,
   deg. BTC 28 degrees - - - -
Spark plugs AC SA-47, Champion - - - -
   AJ-66, C-10-S, 78S,
   Simmonds-Benton
   4D3-S
Oil sump capacity,
   quarts 8 - - - -
Certification basis Type Certificate No. 222  (Expired 7/10/45)
NOTE 1.    Maximum permissible cylinder head, barrel, and oil inlet temperatures 540 degrees
   F., 310 degrees F., and 240 degrees F., respectively.
NOTE 2.    Models 6AC-264-D3 and F3, similar to Models 6AC-264-D2 and F2, eligible with
   modified accessory housing for use of Auto-Lite starter, Type MBG (12 volts), or MZ Auto-
   Lite generator, Type GDY or GAS (12 or 6 volts) and AC fuel pump types Nos. 10551 or
   10739 at weight increase of 15, 12 and 3 lbs., respectively.
```

## ADs (1, in force first)

- [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more

## Registered aircraft by registry model (OpenAirDocs)

- [Franklin 6AC264 series](https://openairdocs.org/engine/franklin-6ac264-series): 1 aircraft (registry code 27015)

## STCs approved under this data sheet (1)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC

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