# TCDS ATC 23: 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/sha256/3d/31/3d31014d9127a42d1e74a5d436cb7bde63d3aef6b1a6e32b82c4ef111e24faa2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3B5F15BEDBEDA7A88525670E00667440.0001
- Page: https://openairdocs.org/tcds/ATC%2023

## Models (2)

As the data sheet lists them.

- Whirlwind GR-540E
- Whirlwind R-540 Series

## What the data sheet says

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

```text
WRIGHT AERONATICAL DIVISION
CURTISS-WRIGHT CORPORATION
MODELS:  Wright Whirlwind R-540 Series
T.C. NUMBER:  ATC 23
Model - Whirlwind R-540E GR-540E
Type - 5RA Direct drive 1.58: 1 or 2: 1 reduction gearing
Rating:
  Maximum continuous, hp,
  rpm, at S.L. pressure
  altitude 175-2000-S.L. - - - -
  Take-off (one minute),
  hp, rpm, at full throttle 175-2000 - - - -
Fuel (minimum octane
  aviation gasoline) 65 - - - -
Bore and stroke, in. 5.0 x 5.5 - - - -
Displacement, cu. in. 540 - - - -
Compression ratio 5.1: 1 - - - -
Weight (dry), lbs. 420 470 (1.58: 1), 480 (2: 1)
Propeller shaft, SAE No. 30 - - - -
Supercharging (impeller
  gear ratio) 7.05: 1 - - - -
Carburetion Stromberg NA-R7 - - - -
  carburetor with
  1-13/16 in. venturi
Ignition, dual Scintilla MN5-D-F - - - -
  magnetos
Certification basis Approved Type Certificate No. 23
NOTES 1, 2 2
NOTE 1.    Includes R-540, R-540A, R-540B and R-540D engines.
NOTE 2.    Approval expired 7/12/37.  No engines of these models manufactured after this date
or
   with serial number above 11718 eligible for use in certificated aircraft.
```

## 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

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