# TCDS ATC 42 Textron Lycoming: Textron Lycoming AVCO Corporation

- Type: Type certificate data sheet
- Status: Current
- Holder: Textron Lycoming AVCO Corporation
- Revision: 0
- Product: Engine
- Registered aircraft: 218, by the registry models matched to it (OpenAirDocs)
- Data sheet PDF: https://openairdocs.org/files/sha256/42/65/4265503a83d8d346b66907018e6af5d41c5529750ed42585492a07db490d9e06
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0001847EDB0CEBC6862572C0006DF231.0001
- Page: https://openairdocs.org/tcds/ATC%2042%20Textron%20Lycoming

## Models (1)

As the data sheet lists them.

- R-680

## 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
1-C. NUMBER: AIC 42
Model  R-680
9RA
Rating:
Maximum continuous,
bp. Ipm.  at S.L.
Fress- alt.  215-2000-S.L-
Take-off,  hp.  rpm.
at full throttle  215-2000
Fuel (minimum octane
aviation gasoline)  58
fore and stroke, in.  4.625 x 4-500
Compression ratio  CU. 1n  680.4
5-3:1
Weight  (dry) •  1ks.  510
Fropeller shaft,
SAE NO.  20
Carburetion  Stromberg NA-RA carburetor with 2-1/16 in. venturi
Ignition.  dual  Scintilla SC-A magneto
Certification basis  Approved Type Certificate No. 42 (Expired 12/1/35)
```

## 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 R680](https://openairdocs.org/engine/lycoming-r680): 218 aircraft (registry code 41540)

## 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

## PMA parts (OpenAirDocs) (69, newest 50)

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/DRSDOCID192615220520260722204355.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · For R-680 · Jul 17, 2026
- [UREM40E](https://drs.faa.gov/browse/excelExternalWindow/8AC0F31F516C965286257760004A650B.0001): Spark Plug. Aero Accessories Inc · PMA PQ1206CE · Replaces Allied Signal (Autolite) Part No. SH… · For R-680 · Jun 10, 2010
- [URHM40E](https://drs.faa.gov/browse/excelExternalWindow/72B37F8E308940DB86257760004A6548.0001): Spark Plug. Aero Accessories Inc · PMA PQ1206CE · Replaces Allied Signal (Autolite) Part No. SH… · For R-680 · Jun 10, 2010
- [YA1923-C](https://drs.faa.gov/browse/excelExternalWindow/FFD9E119E05A4AD28625772D005C55D7.0001): Gasket - Starter Drive Housing. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1923-C · For R-680 · May 13, 2010
- [YA465-B](https://drs.faa.gov/browse/excelExternalWindow/FC1403AD764C15B38625772D005C4FCE.0001): Gasket - Cam Idler Gear Pin. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 465-B · For R-680 · May 13, 2010
- [YA852-D](https://drs.faa.gov/browse/excelExternalWindow/F482251404D37EFC8625772D005C5190.0001): Gasket - Accessory Drive Housing. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 852-D · For R-680 · May 13, 2010
- [YA231](https://drs.faa.gov/browse/excelExternalWindow/F059AF9F9F69FA168625772D005C4F1F.0001): Gasket - Distributor Mounting. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 231 · For R-680 · May 13, 2010
- [YA1076](https://drs.faa.gov/browse/excelExternalWindow/EEA957799CDD5B7E8625772D005C5213.0001): Gasket - Magneto Drive-Case. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1076 · For R-680 · May 13, 2010
- [YA1747](https://drs.faa.gov/browse/excelExternalWindow/E479274B3E222D148625772D005C544D.0001): Gasket - Exhaust Flange. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1747 · For R-680 · May 13, 2010
- [YA1396-B](https://drs.faa.gov/browse/excelExternalWindow/E1C1BAE92A11B37B8625772D005C539B.0001): Gasket - Starter Drive. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1396-B · For R-680 · May 13, 2010
- [YA1843](https://drs.faa.gov/browse/excelExternalWindow/DDBFFBEA85CCC4CF8625772D005C5525.0001): Gasket - Rocker Cover Paper. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1843 · For R-680 · May 13, 2010
- [YASTD-186](https://drs.faa.gov/browse/excelExternalWindow/DC8362D46BC0AE798625772D005C4D16.0001): Seal Tachometer Drive. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-186 · For R-680 · May 13, 2010
- [YA568](https://drs.faa.gov/browse/excelExternalWindow/D5F76D77E0D6CC078625772D005C4FFA.0001): Packing - Intake Pipe to Case. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 568 · For R-680 · May 13, 2010
- [YA238](https://drs.faa.gov/browse/excelExternalWindow/D1E035A5AEF2F8E68625772D005C4F4B.0001): Gasket - Magneto To Drive. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 238 · For R-680 · May 13, 2010
- [YA1952](https://drs.faa.gov/browse/excelExternalWindow/D146181A65577CFF8625772D005C565D.0001): Gasket - Cuno Oil Filter. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1952 · For R-680 · May 13, 2010
- [YASTD-347](https://drs.faa.gov/browse/excelExternalWindow/C95451D68632461E8625772D005C4D6E.0001): Hose Rocker Box Lube. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-347 · For R-680 · May 13, 2010
- [YA1185-B](https://drs.faa.gov/browse/excelExternalWindow/C1F2FA72E8A435E28625772D005C5344.0001): Gasket - Front Oil Sump Paper. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1185-B · For R-680 · May 13, 2010
- [YASTD-187](https://drs.faa.gov/browse/excelExternalWindow/B889FE06C526762E8625772D005C4D3F.0001): Seal Generator Drive Shaft. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-187 · For R-680 · May 13, 2010
- [YA1794-B](https://drs.faa.gov/browse/excelExternalWindow/B6EF0022D50E1FE18625772D005C54A2.0001): Gasket - Generator Drive. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1794-B · For R-680 · May 13, 2010
- [YA1183-R](https://drs.faa.gov/browse/excelExternalWindow/B3DD75864E1E00F58625772D005C5318.0001): Gasket-rear Sump Rubber. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1183-R · For R-680 · May 13, 2010
- [YA1940](https://drs.faa.gov/browse/excelExternalWindow/B326786E019A40FD8625772D005C562B.0001): Gasket - Thrust Bearing Breather. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1940 · For R-680 · May 13, 2010
- [YA690-D](https://drs.faa.gov/browse/excelExternalWindow/AE1EF60198D514B58625772D005C507D.0001): Gasket - Shroud Tube Flange Paper Type. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 690-D · For R-680 · May 13, 2010
- [YA843-B](https://drs.faa.gov/browse/excelExternalWindow/ADD0B6DD4E33A3BE8625772D005C5100.0001): Gasket-Oil Pump. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 843-B · For R-680 · May 13, 2010
- [YA1027-B](https://drs.faa.gov/browse/excelExternalWindow/A9532E0D12F11A738625772D005C5600.0001): Gasket - Fuel Drive Mount. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1027-B · For R-680 · May 13, 2010
- [YA573-C](https://drs.faa.gov/browse/excelExternalWindow/A7986B1AA13370B88625772D005C5025.0001): Gasket - Oil Strainer Nut. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 573-C · For R-680 · May 13, 2010
- [YASTD-388](https://drs.faa.gov/browse/excelExternalWindow/A6CC11AE823883F98625772D005C4D98.0001): Hose Rocker Box Lube. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-388 · For R-680 · May 13, 2010
- [YA1077-B](https://drs.faa.gov/browse/excelExternalWindow/A3F793016D3CC3018625772D005C523D.0001): Gasket - Thrust Bearing Cap. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1077-B · For R-680 · May 13, 2010
- [YA1794](https://drs.faa.gov/browse/excelExternalWindow/A3915C193A2803DB8625772D005C5476.0001): Gasket - Fuel Drive Cover. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1794 · For R-680 · May 13, 2010
- [YA1045-C](https://drs.faa.gov/browse/excelExternalWindow/9D58EF416BF601358625772D005C51E6.0001): Gasket - Crankcase Breather. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces YA1045-C · For R-680 · May 13, 2010
- [YA680-AA](https://drs.faa.gov/browse/excelExternalWindow/99DF7ACC283E774D8625772D005C5051.0001): Gasket-Bolt Crankpin Oil Seal. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 680-AA · For R-680 · May 13, 2010
- [YASTD-389](https://drs.faa.gov/browse/excelExternalWindow/918CAFD8E26A004B8625772D005C4DC1.0001): Hose Rocker Box Lube. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-389 · For R-680 · May 13, 2010
- [YA1169-B](https://drs.faa.gov/browse/excelExternalWindow/7EA7E32F39C412688625772D005C52C0.0001): Gasket - Accessory Case Breather. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1169-B · For R-680 · May 13, 2010
- [YA690-R](https://drs.faa.gov/browse/excelExternalWindow/7A3C128835BAEF138625772D005C50A9.0001): Gasket - Shroud Tube Flange Rubber Type. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 690-R · For R-680 · May 13, 2010
- [YA1185-R](https://drs.faa.gov/browse/excelExternalWindow/72DF3DB9D56523688625772D005C536F.0001): Gasket - Front Oil Sump Rubber. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1185-R · For R-680 · May 13, 2010
- [YA8313](https://drs.faa.gov/browse/excelExternalWindow/6B7F23FB7D8E03218625772D005C5685.0001): Gasket - Vacuum Pump Cover. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 8313 · For R-680 · May 13, 2010
- [YASTD-548](https://drs.faa.gov/browse/excelExternalWindow/6AE3BC687469C3328625772D005C4E44.0001): Seal Vacuum Pump Drive. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-548 · For R-680 · May 13, 2010
- [YA1883-B](https://drs.faa.gov/browse/excelExternalWindow/6791F5FAD5CFE2188625772D005C557C.0001): Gasket - Distributor Shaft Packing Retainer. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1883-B · For R-680 · May 13, 2010
- [YA159](https://drs.faa.gov/browse/excelExternalWindow/5CFA2482E00E1E908625772D005C4E9D.0001): Gasket - Governor Mount Plate. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 159 · For R-680 · May 13, 2010
- [YA404B](https://drs.faa.gov/browse/excelExternalWindow/542FCF2ED1F628DF8625772D005C4F76.0001): Gasket - Intake to Cylinder. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 404B · For R-680 · May 13, 2010
- [YA1503-B](https://drs.faa.gov/browse/excelExternalWindow/4B3A0A46E5A04DBD8625772D005C53C7.0001): Gasket - Air Box to Carburetor. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1503-B · For R-680 · May 13, 2010
- [YA1183-B](https://drs.faa.gov/browse/excelExternalWindow/40069540C7BC08018625772D005C52EC.0001): Gasket - Rear Oil Sump Paper. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1183-B · For R-680 · May 13, 2010
- [YA1699-C](https://drs.faa.gov/browse/excelExternalWindow/2F45165D746409A28625772D005C5420.0001): Gasket - Vacuum Pump Mount. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1699-C · For R-680 · May 13, 2010
- [YA848-B](https://drs.faa.gov/browse/excelExternalWindow/2E79BA80D65154C28625772D005C5130.0001): Gasket - Carburetor Mount. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 848-B · For R-680 · May 13, 2010
- [YA1027-C](https://drs.faa.gov/browse/excelExternalWindow/26CBB3362937159A8625772D005C51BA.0001): Gasket - Generator Mount. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1027-C · For R-680 · May 13, 2010
- [YA849-C](https://drs.faa.gov/browse/excelExternalWindow/229C7D063A46503E8625772D005C5158.0001): Gasket-Oil Relief Valve. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 849-C · For R-680 · May 13, 2010
- [YASTD-499](https://drs.faa.gov/browse/excelExternalWindow/1F715E1F8E2F8C178625772D005C4E18.0001): Cylinder Base Packing. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-499 · For R-680 · May 13, 2010
- [YASTD-346](https://drs.faa.gov/browse/excelExternalWindow/1E76446A384116D38625772D005C4DED.0001): Rocker Oil Shaft Seal. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces STD-346 · For R-680 · May 13, 2010
- [YA1843-R](https://drs.faa.gov/browse/excelExternalWindow/1E67FC582D50117E8625772D005C54FB.0001): Gasket - Rocker Cover Rubber. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1843 · For R-680 · May 13, 2010
- [YA1691-C](https://drs.faa.gov/browse/excelExternalWindow/1AAAE62531434CC78625772D005C53F3.0001): Gasket - Fuel Pump Mount. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1691-C · For R-680 · May 13, 2010
- [YA1111-C](https://drs.faa.gov/browse/excelExternalWindow/18E2EA7396BDF11C8625772D005C5269.0001): Packing- Push Rod Tube. Yesteryear Aviation Inc · PMA PQ4039CE · Replaces 1111-C · For R-680 · May 13, 2010

All 69: https://openairdocs.org/tcds/ATC%2042%20Textron%20Lycoming/pma.md

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