# TCDS ATC 120 Teledyne: Continental Motors Inc

- Type: Type certificate data sheet
- Status: Current
- Holder: Continental Motors Inc
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/40/7e/407eb8ba2092d74864e598c4192e32001c4f3344e1b88a3af20d6a81a5758cde
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/40AD8C9E5627B2A186257FC7004B9C52.0001
- Page: https://openairdocs.org/tcds/ATC%20120%20Teledyne

## Models (4)

As the data sheet lists them.

- R-670-B
- R-670-D
- R-670-F
- R-670-H

## What the data sheet says

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

```text
MCDEIS: F-670-B, -D, -F, -H
1-C. NUMBER: ATC 120
Model  1:- 670-B
VRA
Rating:
Maximum continuous,
hp.  Ipm.  at S.I.
Fress-  alt.  225-2000-S.1.
Take-off (one minute),
hr. rpm, at full
throttle  225-2000
Fuel (minimum octane
aviation gasoline)  80
Eore and stroke, in.  5.125 × 4.625
Cisplacement, cu. in.  668
Compression ratio  6.1:1
weight  (dry) •  ibs.  425
Fropeller shaft,
SAE NO.  20
Carburetior  Stromberg NA-R6 carburetor with 2-1/16 in. verturi
Ignition, dual  Scintilla MN7-DF magnetos
Certification basis  Approved Type Certificate No. 120
NOTE 1. Includes R-670-D and k-670-H with rear exhaust forts and R-670-F with front exhaust ports.
NOTE 2.  Maximum permissible cylinder head, barrel and oil inlet temperatures, 550 degrees F.. 325 degrees F..
and 200 degrees F., respectively.
No engines of these models manufactured after this date or with serial 1umbere
```

## ADs (1, in force first)

- [AD 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995

## Registered aircraft by registry model (OpenAirDocs)

- [Continental R-670-B](https://openairdocs.org/engine/continental-r-670-b): 0 aircraft (registry code 17395)

## STCs approved under this data sheet (2)

- [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
- [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc

## PMA parts (OpenAirDocs) (1)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this data sheet's models, so check the FAA record before relying on it. Newest first.

- [72-231114-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199441148320260722204348.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · For R-670-B, R-670-D, R-670-F and 1 more · Jul 17, 2026

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