# TCDS ATC 37: Roche J.A.

- Type: Type certificate data sheet
- Status: Current
- Holder: Roche J.A.
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/6e/38/6e38adc41c60f2482eea5bcb56da50f20fe806b9741b54758445cbd9e274b8f5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3481B8B2E33CB10F8525670D006CFE51.0001
- Page: https://openairdocs.org/tcds/ATC%2037

## Models (1)

As the data sheet lists them.

- Rover L267

## What the data sheet says

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

```text
J.  A. ROCHE’
MODELS:  Roche’ Rover L267
T.C. NUMBER:  ATC 37
Model Rover L267
Type 4LIA
Rating:
   Maximum continuous, hp,
   rpm, at S.L. pressure
   altitude 75-1975-S.L.
   Take-off (one minute), hp,
   rpm, at full throttle 75-2975
Fuel (minimum octane
   aviation gasoline) 59
Bore and stroke, in. 4.125 x 5.000
Displacement, cu. in. 267.3
Compression ratio 5.15: 1
Weight (dry), lbs. 232
Propeller shaft Special Taper
Carburetion Stromberg NAR-3 carburetor with 1-1/8 in. venturi
Ignition, dual Scintilla PN-4DF magnetos
Certification basis Approved Type Certificate No. 37
NOTE 1.    This engine formerly manufactured by Michigan Aero Engine Corporation.
NOTE 2.    Maximum permissible cylinder head, barrel and oil inlet temperatures, 550 degrees
F.,
   300 degrees F., and 200 degrees F., respectively.
NOTE 3.    Approval expired 8/14/41.  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)

- [Roche ROVER L267](https://openairdocs.org/engine/roche-rover-l267): 0 aircraft (registry code 54001)

## 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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