# TCDS TC 67: Menasco Manufacturing Co.

- Type: Type certificate data sheet
- Status: Current
- Holder: Menasco Manufacturing Co.
- Revision: 0
- Product: Engine
- Registered aircraft: 2, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/25/ab/25ab3c63baae2eae3c0f1805058fa550b9819a089ae51a6b30043939e2223169
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4DFCD1343268DFE18525670C0070D375.0001
- Page: https://openairdocs.org/tcds/TC%2067

## Models (3)

As the data sheet lists them.

- Pirate C4
- Pirate D4
- Super Pirate D-4-87

## 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 C4, D4, Super Pirate D4-87
T.C. NUMBER:  T.C. 67
Model Pirate C4 Pirate D4 Super Pirate D4-87
Type 4LAI - Direct drive - - - - - - - -
Rating:
   Maximum continuous,
   hp, rpm, at S. L.
   pressure altitude 125-2175-S.L. - - - - - - - -
   Take-off, hp, rpm, at
   full throttle 125-2175 - - - - - - - -
Fuel (minimum octane
   aviation gasoline) 73 - - - - 80
Bore and stroke, in. 4.75 x 5.12 - - - - - - - -
Displacement, cu. in. 363 - - - - - - - -
Compression ratio 5.8: 1 5.5: 1 6: 1
Weight (dry), lbs. 300 311 310
C.  G. location (dry)
   Forward of rear mount
   C.L., in. 10 - - - - - - - -
   Below propeller shaft
   C.L., in. 7.2 - - - - - - - -
Propeller shaft, SAE
No.
10 - - - - - - - -
Carburetion Stromberg downdraft
   NA-R4D carburetor
   with 1-7/16 in. venturi
Stromberg updraft NA-
   R5 carburetor with 1-
   13/16 in. venturi or
   Stromberg downdraft
   with 1-7/16 in.
Stromberg downdraft
   NAR-4D carburetor
   with 1-7/16 in. venturi
Ignition Scintilla PA-4D-F1,
   Bosch FU4, S88, JF4-
   ARS12, or Bendix
   Scintilla SF-4R-1 or
   Eisemann LA-4
   magnetos
- - - - Bendix Scintilla SF4R-9
Ignition timing, degrees
   BTC 30 L (full advance) 35 R 30 Both - - - -
Spark plugs BG 417 or 5B1 BG 323 or LU-489 BG-LU-489
NOTES 1, 4 1, 2, 5 1, 3, 5
Certification basis Type Certificate No. 67
NOTE 1.    Maximum permissible cylinder head, barrel and oil inlet temperature, 550 degrees F., 300
   degrees F., and 200 degrees F., respectively.
NOTE 2.    The following accessory provisions and typical engine accessories are eligible at the indicated
   weight increase:
Starter - Eclipse Y-150 23
Generator - Eclipse G-1 or LY-180 (no provision on early C4 and D4 engines) 17
Fuel pump (use SAE rotary type) - approximately  4
Oil filter - Purolater Type PEA-1/2 (Part No. 5654)  3
Air cleaner - (Part No. 5656)  4

Hot air valve - (Part No. 7684)  4
NOTE 3.    Models D4 and D4-87 incorporate improved cylinder heads and automatic valve gear
   lubrication.  The D4-87 engines also incorporate steel connective rods and larger piston pins.
NOTE 4.    The approval for Model C4 expired 3/25/43.  No C4 engines manufactured after this date or
   with serial numbers above 500 are eligible for use in certificated aircraft.
NOTE 5.    The approval for models D4 and D4-87 expired on 2/13/47.  No engines of these models
   manufactured after this date are eligible for use in certificated aircraft.
NOTE 6.    Engine model Super Pirate D4-83, formerly included in this specification has been deleted due
to the fact that no engines of this model are in existence.
```

## ADs (1, in force first)

- [AD 69-09-01](https://openairdocs.org/ad/69-09-01): Eisemann Magnetos · Eisemann Magnetos, 2A4-45-B2, 2A4-49-B2 and 158 more

## Registered aircraft by registry model (OpenAirDocs)

- [Menasco PIRATE C4](https://openairdocs.org/engine/menasco-pirate-c4): 2 aircraft (registry code 43517)
- [Menasco PIRATE D4](https://openairdocs.org/engine/menasco-pirate-d4): 0 aircraft (registry code 43518)

## 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

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.