# TCDS ATC 110: Textron Lycoming AVCO Corporation

- Type: Type certificate data sheet
- Status: Current
- Holder: Textron Lycoming AVCO Corporation
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/a7/ab/a7ab6246201d9f1224e2b7111635731cc55d477c6a0fba2905e0abbfa0620d3d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A327D916C04F108B8525670E004E5D04.0001
- Page: https://openairdocs.org/tcds/ATC%20110

## Models (2)

As the data sheet lists them.

- R-680-B5
- R-680-5

## What the data sheet says

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

```text
MODEIS: AVco Lycoming R-680-5, -B5
I.C. NUMBER: ATC 110
Model  R-680-5, -B5
Type  ORA
Rating:
Maximum continuous.
hp. Ipm at S.L.
fress. alt.  240-2000-S.I.
Take-off (one minute).
hp, Ipm, at full
throttle  260-2300
Fuel (minimum octane
aviation gasoline)  80
fore and stroke, in.  4.625 × 4.500
[isplacement, cu. in.  680.4
Compression ratio  6.5:1
Weight (dry).  ibs.  473
Fropeller shaft,
SAE NO.  20
Carburetion  Stromberg NA-RA carburetor with 2.0625 in. venturi
Ignition,  dual  Scintilla SC-A or SC-A2 magento
Certification basis  Approved Type Certificate No. 110 (Expired 3/14/39)
NOTE 1.  The R-680-P5 model  engine may be converted to the R-680-B2 by properly providing for the use of an
adjustable or fixed pitch propeller and ty including the -B2 designation and ratings or the rame plate.
```

## ADs (5, in force first)

- [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004
- [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 1996
- [AD 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991
- [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969

## Registered aircraft by registry model (OpenAirDocs)

- [Lycoming R-680-5](https://openairdocs.org/engine/lycoming-r-680-5): 0 aircraft (registry code 42372)
- [Lycoming R-680-B5](https://openairdocs.org/engine/lycoming-r-680-b5): 0 aircraft (registry code 42373)

## STCs approved under this data sheet (3)

- [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 SE2415CE](https://openairdocs.org/stc/SE2415CE): Add the following approved fuel: Unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gas, 88 minimum antiknock index, (RON+MON)/2.. Petersen Aviation Inc
- [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP.. Phillips Petroleum Co

---
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.