# TCDS ATC 139 Menasco: Menasco Manufacturing Co.

- Type: Type certificate data sheet
- Status: Current
- Holder: Menasco Manufacturing Co.
- Revision: 0
- Product: Engine
- Registered aircraft: 1, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/3d/ae/3daea5b2c80074fbd4d82092ec944bdd0a6cd24b56a5fd5d2c0c2eaa758b8f6f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FFDFA6FE81869DA9862572C0006F824E.0001
- Page: https://openairdocs.org/tcds/ATC%20139%20Menasco

## Models (1)

As the data sheet lists them.

- Buccaneer B6S

## 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 Buccaneer A-6
T.C. NUMBER:  ATC 139
Model Buccaneer B6S
Type 6LAI
Rating:
   Hp, rpm, pressure
   altitude (ft.) 200-2250-4500 (See NOTE 1)
Fuel (minimum octane
   aviation gasoline) 73
Bore and stroke, in. 4.500 x 5.125
Displacement, cu. in. 489
Compression ratio 5.5: 1
Weight (dry), lbs. 415
Crankshaft gearing None
Propeller shaft, SAE No. 10
Supercharging
   (impeller gear ratio) 8.75: 1
Carburetion Stromberg NA-R7 carburetor with 2-1/4 in. venturi
Ignition, dual Bosch JF6 magnetos
Certification basis Approved Type Certificate No. 139
NOTE 1.    During take-off and initial climb the engine shall be limited to 37-1/2 in. manifold
   pressure or less.  The throttle may be held at this manifold pressure for not longer than one
   minute.  In climb or level flight the manifold pressure limit is 35.8 inches.
NOTE 2.   Approval expired 10/7/41.  No engines of this model manufactured after this date or
   with serial numbers above 6066 eligible for use in certificated aircraft.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Menasco BUCCANEER B6S](https://openairdocs.org/engine/menasco-buccaneer-b6s): 1 aircraft (registry code 43509)

## 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.

- [UREM40E URHM40E](https://drs.faa.gov/browse/excelExternalWindow/1E40C481546604768525704C00570B91.0001): Spark Plug. Slick Aircraft Products, Division of Unison Ind · Replaces SL 20A SL200A Allied Signal (Autolite) · For Buccaneer B6S · Jul 1, 1999

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