# TCDS ATC 15: Pratt & Whitney Division

- Type: Type certificate data sheet
- Status: Current
- Holder: Pratt & Whitney Division
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/d8/de/d8de0b487d2614ccbd8c52b83290e963c1567d56f248fe4cc6d998fcbf02e0ba
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/70480DE3DCC77B1A8525670D006094FE.0001
- Page: https://openairdocs.org/tcds/ATC%2015

## Models (4)

As the data sheet lists them.

- Hornet A-1
- Hornet A-3
- Hornet A
- Hornet A-2

## What the data sheet says

This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers.

```text
MODEIS: Pratt & Whitrey Hornet A, A-1. A-2, A-3
I-C. NUMEER: ATC 15
Model - Hornet  Direct dive  4-2  A-3
1YCE • 9R0
Ratino:
Maximum continuous,
hE• Ipm.  at SoL
blessure altitude  525-1900-S.L.
JAKE-OLI  one minute,
EnrOECIE  525-1900
Fuel (minimum octane
aviation gasoline)  70  72
Fore and stroke, in.  6.125 × 6.375
Lisplacement, cu. in.  1690
Compression ratio  5:1
weight (dry), 1bs.  795
Supercharging
(impeller gear ratio)  7:1
Carburetion  Stromberg NA-Y7B carburetor
Ignition, dual  Scintilla VAG-9D magnetos
NCIES  1. 2
Certification basis  Approved Type Certificate No. 15
NOTE 1. Model A-3 engine equipped with Pratt & whitney fuel injection system.
NOTE 2.  expıred 1/8/36.  No engines of these models manufactured after this date or with serial numbers
acove l738 elicicle for use in certificated aircraft.
```

## ADs (1, in force first)

- [AD 56-06-02](https://openairdocs.org/ad/56-06-02): Cylinder Flange Attaching Stud · Pratt & Whitney Division Double Wasp CA15, Double Wasp CA17, Double Wasp CA18 and 115 more

## 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.