# TCDS TC 181: American Aircraft Company

- Type: Type certificate data sheet
- Status: Current
- Holder: American Aircraft Company
- Revision: 0
- Product: Engine
- Registered aircraft: 2, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/e1/07/e1076e32d7266ece52c1aa968a498a872b988e03cb7018b8a0c3c00be5cce2af
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D76EA223D371C0708525670B005A3D09.0001
- Page: https://openairdocs.org/tcds/TC%20181

## Models (1)

As the data sheet lists them.

- S-5-125

## What the data sheet says

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

```text
AMERICAN AIRCRAFT COMPANY
MODEIS: American S-5-125
1.C. NUMBER: I.C. 181
Model  S-5-125
Type  5RA
Rating:
Maximum continuous,
DE.  ipm.  at S.L
Fress.  alt.  125-1950-S.L.
Take-off, hp. rpm.
full throttle  125-1950
Fuel (minimum octane
aviation gasoline)  73
Bore and stroke, in.  4.75 × 5.00
Displacement, cu-  In.  440_5
Compression ratio  5.1:1
weight (dry).  ibs.  355
Fropeller shaft, SAE No. 10
Ignition,  Carburetion  dual  scintilla  Stromberg NA-RS carburetor with 1-5/8 in. venturi  HIS LatterY 181
Certification basis  Type Certificate No.
Froduction basis  None-  The manufacturer does not hold a production certificate for the production
of engines under this type certificate and, therefore, each engine so produced
is subject to a detailed  . inspection for workmanship and conformity with the
approved data Ly a CAA Agent.  In addition, the engine must have a satisfactory
run-in including 5 hours at rated power and speed.  Upon satisfactory completion
of the above, the agent will tag the engine with Tag Form ACA 186.
NOTE 1. Maximum permissible cylinder head, barrel and oil inlet temperatures, 500 degrees F.. 300 degrees F..
and 200 degrees F. respectively.
```

## ADs

None name its models.

## Registered aircraft by registry model (OpenAirDocs)

- [American S5-125](https://openairdocs.org/engine/american-s5-125): 2 aircraft (registry code 04001)

## 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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