# TCDS ATC 78: Wright Aeronautical Division Curtiss-Wright Corporation

- Type: Type certificate data sheet
- Status: Current
- Holder: Wright Aeronautical Division Curtiss-Wright Corporation
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/94/9c/949cfbab23ded0c3ddec39335d028c8e4bee228fda653e20aef5f17e70930c8d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A82CBA21316F362B8525670E0066B762.0001
- Page: https://openairdocs.org/tcds/ATC%2078

## Models (1)

As the data sheet lists them.

- Whirlwind R-975E-2

## What the data sheet says

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

```text
MODEIS: Wright Whirlwind R-975E-2
I.C. NUMBER: ATC 78
pazect drive
Maximum continuous,
420-2150-S.I. or 420-2200-35.2-600 ft.
Take-off (one minute),
hp. Ipm, at full
420-2150 Or 420-2200-35.0
(minimum octane
Fore and stroke, in.
Lisplacement, cu. in.
Keight (dry),
Fropeller shaft,
Supercharging
(impeller gear ratio)
Stromberg NA-R9 carburetor with 2-5/8 in. venturi
Scintilla VAG-9D, VAG-9DE or SF-9R magnetos
Certification basis  Approved Type Certificate No. 78
OTE Do degrees F.. respectively.  Maximum permissible cylinder head, barrel and oil inlet temperatures, 500 degrees F., 325 legrees F.. and
akove 120 a gie for ve in derelicated treat.  No engines of this model manufactured after this date or with serial numbert
NOTE 3. Weight (dry), includes carburetor air heater and cleaner and cylinder barrel and head raffles.
```

## ADs

None name its models.

## 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.