# TCDS ATC 75: Jacobs Aircraft Engine Co.

- Type: Type certificate data sheet
- Status: Current
- Holder: Jacobs Aircraft Engine Co.
- Revision: 0
- Product: Engine
- Registered aircraft: 4, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/31/10/3110180d76feb6c43b8abd8e7c88239cfcc5cef2592cbaf4f3e1e6133706650c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F75A52E9316ED0A58525670C006B0095.0001
- Page: https://openairdocs.org/tcds/ATC%2075

## Models (1)

As the data sheet lists them.

- L-3

## What the data sheet says

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

```text
JACOBS AIRCRAFT ENGINE COMPANY
MODELS:  Jacobs L-3
T.C. NUMBER:  ATC 75
Model L-3
Type 3RA
Rating:
   Maximum continuous, hp,
   rpm, at S.L. pressure
   altitude 55-2125-S.L.
   Take-off (one minute),
   hp, rpm, at full throttle 55-2125
Fuel (minimum octane
   aviation gasoline) 72
Bore and stroke, in. 4.134 x 4.75
Displacement, cu. in. 190.3
Compression ratio 4.7: 1
Weight (dry), lbs. 189
Crankshaft gearing None
Supercharging None
Carburetion Stromberg NAS-3 carburetor
Ignition, dual Scintilla PN-3-D magnetos
Certification basis Approved Type Certificate No. 75
NOTE 1.    Weight (dry) includes exhaust collector ring.
NOTE 2.    Approved expired 7/23/41.  No engines of this model manufactured after this date or
   with serial numbers above 44 eligible for use in certificated aircraft.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Jacobs L3](https://openairdocs.org/engine/jacobs-l3): 4 aircraft (registry code 35002)

## STCs approved under this data sheet (2)

- [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
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings.. Continental Motors, Inc.

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