# TCDS E-202: Textron Lycoming AVCO Corporation - Type: Type certificate data sheet - Status: Current - Holder: Textron Lycoming AVCO Corporation - Revision: 4 - Revised: March 10, 1994 - Product: Engine - Registered aircraft: 240, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/64/9f/649f6d08e706c9190ee9c0755419f947026be5e61ac7b0e8313ad58e7423cc12 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/484BEB77185283098525670E004FA050.0001 - Page: https://openairdocs.org/tcds/E-202 ## Models (5) As the data sheet lists them. - R-680-E2 - R-680-E1 - R-680-E3A - R-680-E3B - R-680-E3 ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text * PAGE 1 2 REV. 4 3 Reformatted 3/94. LEGEND: "- -" INDICATES "SAME AS PRECEDING MODEL" "---" INDICATES "DOES NOT APPLY" NOTICE: ALL PAGES ARE REFORMATTED. SIGNIFICANT CHANGES, IF ANY ARE BLACK-LINED IN THE LEFT MARGIN. U.S. DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION TYPE CERTIFICATE DATA SHEET E-202 TCDS NUMBER E-202 REVISION: 4* DATE: 3/10/94 AVCO LYCOMING MODELS: R-680E1 R-680E2 R-680E3 R-680E3A (R-680-9) R-680E3B (R-680-13) Engines of models described herein conforming with this data sheet (which is part of Type Certificate Number E-202) and other approved data on file with the Federal Aviation Administration, meet the minimum standards for use in certificated aircraft in accordance with pertinent aircraft data sheets and applicable portions of the Federal Aviation Regulations, provided they are installed, operated, and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. TYPE CERTIFICATE (TC) HOLDER Textron Lycoming, Williamsport Plant Subsidiary of Textron, Inc. Williamsport, Pennsylvania I. MODELS R-680 E1 E2 E3, E3A, E3B TYPE 9RA - - - - RATINGS Maximum, Continuous, hp, rpm, sea level pressure altitude Take-off (5 min.), hp, rpm, at full throttle 275-2200-S.L. 290-2300 265-2200-S.L. 280-2300 285-2200-S.L. 300-2300 FUEL (Min. octane aviation gasoline) 80 73 87 BORE & STROKE, (in.) 4-5/8x4-1/2 - - - - DISPLACEMENT (cubic in.) 680.4 - - - - COMPRESSION RATIO 6.2:1 5.5:1 7.0:1 WEIGHT (dry), lbs. 526 - - 525, 535, 565 C.G. LOCATION (dry) (in.) Forward of mounting surface Below crankshaft C.L. 4.8 .3 - - - - 4.8, 5.6, 5.6 .3, .6, .6 CRANKSHAFT GEARING None - - - - PROPELLER SHAFT, SAE No. 20 - - - - SUPERCHARGING RATIO 1:1 - - - - CARBURETION Stromberg NAR-7A carburetor with 2-1/16 in. venturi - - - - IGNITION, DUAL Scintilla types SC-A2, DRN, or DF Magneto - - - - IGNITION TIMING (°B.T.C.) 34(F), 30(R) - - - - TCDS E-202 PAGE 2 SPARK PLUGS Champion M3-1, -S, C26, -S; RC 26-S, C27, -S; Auto Lite 18-A1, SH- 2K, SH-2M; Aero A-1A; BG4B2, -S, RB485S, 706S, 706SR - - Champion M2, -S; C26, -S; RC26-S; C27, -S; Auto Lite SH- 2K, SH-2M; ACSS87; Bendix 7AS; BG3B2, -S; SS453, 417, - S; RB485S, 706S, 706SR NOTES 1, 4, 7 - - 1, 2, 3, 4, 5, 6, 7 CERTIFICATION BASIS Type Certificate No. 202 PRODUCTION BASIS Production Certificate No. 3 NOTES NOTE 1. Maximum permissible cylinder head, barrel and oil inlet temperature 525 łF, 300łF, and 200łF, respectively. NOTE 2. Model R-680-E3A has the same rating as and is essentially identical to model R-680-E3 and is equivalent to military model R- 680-9. It incorporates optional accessory drives of the AN type and Breeze type radio shielding. NOTE 3. Model R-680-E3B has the same rating as and is essentially identical to model R-680-E3A and is equivalent to military model R-680-13. This model incorporates all accessory drives (AN type) as standard equipment, and all magnesium parts have been replaced by aluminum parts. NOTE 4. The accessories eligible for use on the various engine models, the weights of which are not included in the engine weights listed above, are: Accessories Weight Engine Models (lbs. approx.) E1, 2, 3 E3A E3B *Governor-Ham. Std. Hydro. const. speed prop. 4 Yes Yes Yes Yes Generator-Eclipse Model G-1 15 Yes Generator-Eclipse Type 310 Model 5 15 Generator-Eclipse Type 309 Model 17 Yes Starter-Eclipse Type F-141 24 Yes Yes Yes Starter-Eclipse Type 424 24 Yes Fuel Pump - Pesco Type R-400-BC 2 Yes Yes Fuel Pump - Pesco Model R-400-BMB 2 Yes Vacuum Pump Pesco Type B-6, Model 194-D 3 Yes Vacuum Pump Pesco Type B-2A Model 194 3 Yes Yes *These engine models also eligible for optional use of two-position hydraulically controllable propeller when the control valve is substituted for the constant speed governor and drive. NOTE 5. When military engines are installed in certificated aircraft the corresponding certificated engine designation and Type Certificate No. 202 should be included on the engine designation plate. NOTE 6. Models R-680E3, E3A, and E3B are eligible for use with 80 octane fuel at the following reduced ratings: Maximum Continuous Hp, rpm, In. Hg., altitude: 245-2200-24.0-5300 245-2200-25.5-S.L. Take-off (5 minutes) hp, rpm, In. Hg., altitude: 255-2300-24.0-5100 255-2300-25.5-S.L. NOTE 7. Approval of models R680-E, -E2, -E3 expired November 2, 1950. No engines of these models manufactured after May 1, 1946, and with serial numbers above 2115 are eligible for use in certificated aircraft. ...END... ``` ## 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 R680E series](https://openairdocs.org/engine/lycoming-r680e-series): 225 aircraft (registry code 41545) - [Lycoming R680E3B](https://openairdocs.org/engine/lycoming-r680e3b): 13 aircraft (registry code 42025) - [Lycoming R-680E1](https://openairdocs.org/engine/lycoming-r-680e1): 1 aircraft (registry code 42026) - [Lycoming R680E3A](https://openairdocs.org/engine/lycoming-r680e3a): 1 aircraft (registry code 42024) - [Lycoming R-680E2](https://openairdocs.org/engine/lycoming-r-680e2): 0 aircraft (registry code 42022) - [Lycoming R-680E3](https://openairdocs.org/engine/lycoming-r-680e3): 0 aircraft (registry code 42023) ## STCs approved under this data sheet (6) - [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 SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. - [STC SE2407CE](https://openairdocs.org/stc/SE2407CE): Add the following approved fuel: unleaded automotive gas, 91 minimum antiknock index and leaded automotive gas, 91 minimum antiknock index, (RON+MON)/2.. Petersen Aviation Inc - [STC SE2408CE](https://openairdocs.org/stc/SE2408CE): Add the following approved fuel: unleaded automotive gas, 91 minimum antiknock index and leaded automotive gas, 91 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 - [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines.. 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