# TCDS ATC 146 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/sha256/1a/10/1a10ab9627ce26163b9082921a7006ee7dc978c2e1ecf43bf23b84f56092d1a1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9A53B19799A595B4862572C0006F9339.0001
- Page: https://openairdocs.org/tcds/ATC%20146%20Fairchild

## Models (3)

As the data sheet lists them.

- 6-390-B
- 6-390-D3
- 6-390-D

## 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) 6-390-B, 6-390-D, 6-390-D3
T.C. NUMBER:  ATC 146
Model 6-390-B, 6-390-D 6-390-D3
Type 6LAI - - - -
Rating:
   Maximum continuous,
   hp, rpm, at S.L.
   pressure altitude 145-2250-S.L. 150-2350-S.L.
   Take-off (one minute),
   hp, rpm, at full
   throttle 145-2250 150-2350
Fuel (minimum octane
   aviation gasoline) 73 - - - -
Bore and stroke, in. 4.00 x 5.125 - - - -
Displacement, cu. in. 386 - - - -
Compression ratio 6: 1 - - - -
Weight (dry), lbs. 350 - - - -
Propeller shaft,
   SAE No. 1 Taper - - - -
Carburetion Stromberg NAR-4A carburetor - - - -
   with 1-9/16 in. venturi
Ignition, dual Scintilla PN-6D or PNR-6D, or - - - -
   Bendix SB-6R magnetos
Certification basis Approved Type Certificate No. 146 - - - -
NOTE 1.    Maximum permissible cylinder head, barrel and oil temperatures, 500 degrees F., 300
   degrees F., and 200 degrees F., respectively.
NOTE 2.    Approval expired 4/6/40.  No engines of these models manufactured after this date
   eligible for use in certificated aircraft.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Fairchild 6-390-B](https://openairdocs.org/engine/fairchild-6-390-b): 0 aircraft (registry code 26026)
- [Fairchild 6-390-D](https://openairdocs.org/engine/fairchild-6-390-d): 0 aircraft (registry code 26027)
- [Fairchild 6-390-D3](https://openairdocs.org/engine/fairchild-6-390-d3): 0 aircraft (registry code 26028)

## 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 6-390-B, 6-390-D3, 6-390-D · Jul 17, 2026

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