# TCDS Group 4-3: Heath Aviation Company

- Type: Type certificate data sheet
- Status: Current
- Holder: Heath Aviation Company
- Revision: 0
- Product: Engine
- Registered aircraft: 2, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/55/41/55415f08ea5e86739d19afc34ff48222ffcec583c0bcc10adceacd1d41afbf9c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/58B3D62BFD2AC2AA8525676D0046E2EC.0001
- Page: https://openairdocs.org/tcds/Group%204-3

## Models (1)

As the data sheet lists them.

- B-4

## What the data sheet says

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

```text
HEATH AVIATION COMPANY
MODELS:  Heath B-4
T.C. NUMBER:  4-3
Model B-4
Type 4LA
Rating:
   Maximum continuous,
   hp, rpm, at S.L.
   pressure altitude 25-2800-S.L.
   Take-off (one minute),
   hp, rpm, at full
   throttle 25-2800
Fuel (minimum octane
   aviation gasoline) 70
Bore and stroke, in. 2.75 x 3.50
Displacement, cu. in. 83
Compression ratio 4.6: 1
Weight (dry), lbs. 118
Crankshaft gearing None
Supercharging None
Carburetion Zenith T4X
Ignition, single Bosch FF-4 magneto
Certification basis Group 4-3 (See NOTE 1)
NOTE 1.    This engine is not approved.  The rating giving is for calibration only.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [Heath Avn B4](https://openairdocs.org/engine/heath-avn-b4): 2 aircraft (registry code 32501)
- [Pratt & Whitney B-4](https://openairdocs.org/engine/pratt-whitney-b-4): 0 aircraft (registry code 52149)

## 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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