# TCDS TC 191: Menasco Manufacturing Co.

- Type: Type certificate data sheet
- Status: Current
- Holder: Menasco Manufacturing Co.
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/f3/42/f34234890cec59fd8a0323626a3175209cafef8bf126ef18eaf52bc60617334b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B71CC7ED6418D068525670C007100E1.0001
- Page: https://openairdocs.org/tcds/TC%20191

## Models (1)

As the data sheet lists them.

- Pirate M-50

## What the data sheet says

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

```text
MENASCO MANUFACTURING COMPANY
MODELS:  Menasco Pirate M-50
T.C. NUMBER:  T.C. 191
Model Pirate M-50
Type 4HOA
Rating:
   Maximum continuous, hp,
   rpm, at S.L. pressure altitude 50-2500-S.L.
   Take-off (one minute),
   hp, rpm, at full throttle 50-2500
Fuel (minimum octane
   aviation gasoline) 73
Bore and stroke, in. 3.50 x 3.750
Displacement, cu. in. 144.4
Compression ratio 5.25: 1
Weight (dry), lbs. 167
Crankshaft gearing None
Propeller shaft, SAE No. 0 Tapered
Supercharging
   (impeller gear ratio) None
Carburetion Stromberg NA-S3 or NA-S3A carburetor with 1-1/4 in.
venturi
Ignition, single Bendix-Scintilla SF-4L magneto
Certification basis Type Certificate No. 191
NOTE 1.    Maximum permissible cylinder head, barrel and oil inlet temperatures, 550 degrees
F.,
   300 degrees F., and 200 degrees F., respectively.
NOTE 2.    Approval expired 10/7/41.  No engine of this model manufactured after this date or
   with serial numbers above M-177 eligible for use in certificated aircraft.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Menasco PIRATE M-50](https://openairdocs.org/engine/menasco-pirate-m-50): 0 aircraft (registry code 43511)

## 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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