# TCDS ATC 185 Fairchild: Fairchild Engine Division Fairchild Engine and Airplane Corp.

- Type: Type certificate data sheet
- Status: Current
- Holder: Fairchild Engine Division Fairchild Engine and Airplane Corp.
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/fd/e9/fde954dd60d737cf2af67e8f4eff613317203f80a89e91d2c6966036c7407257
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A7EC65427681626B862572C0006F8902.0001
- Page: https://openairdocs.org/tcds/ATC%20185%20Fairchild

## Models (1)

As the data sheet lists them.

- SGV-770-B5

## What the data sheet says

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

```text
FAIRCHILD ENGINE DIVISION
FAIRCHILD ENGINE AND AIRPLANE CORPORATION
MODELS:  Fairchild (Ranger) SGV-770-B5
T.C. NUMBER:  ATC 185
Model SGV-770-B5
Type 12VIA - 3: 2 reduction gearing
Rating:
   Maximum continuous,
   hp, rpm, in.Hg., at:
     Rated pressure
     altitude (ft.) 420-2800-38 ½-3000
     S.L. pressure
     altitude 410-2800-38 ½-S.L.
   Take-off (one minute),
   hp, rpm, in.Hg. 450-2900-41
Fuel (minimum octane
   aviation gasoline) 87
Bore and stroke, in. 4.000 x 5.125
Displacement, cu. in. 772.8
Compression ratio 6: 1
Weight (dry), lbs. 625
Propeller shaft,
   SAE No. 30
Supercharging
   (impeller gear ratio) 8.84: 1
Carburetion Stromberg NAR-9A carburetor with 2/3 in. venturi
Ignition, dual Scintilla DF (double) magneto
Certification basis Approved Type Certificate No. 185
NOTE 1.    Maximum permissible cylinder head, barrel and oil inlet temperatures, 500 degrees
F.,
   280 degrees F., and 200 degrees F., respectively.
NOTE 2.    Approval expired 4/6/40.  No engines of this model manufactured after this date
   eligible for use in certificated aircraft.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Fairchild SGV-770-B5](https://openairdocs.org/engine/fairchild-sgv-770-b5): 0 aircraft (registry code 26030)

## 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

## PMA parts (OpenAirDocs) (1)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this data sheet's models, so check the FAA record before relying on it. Newest first.

- [72-231114-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155809551120260722204349.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · For SGV-770-B5 · Jul 17, 2026

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