# TCDS 1E13: Lycoming Engines - Type: Type certificate data sheet - Status: Current - Holder: Lycoming Engines - Revision: 8 - Revised: November 4, 2010 - Product: Engine - Registered aircraft: 7, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/b1/9f/b19fa763a59152e7b3d07da815efd7b3d3327e509c89a2d9869895eed3da6b73 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/55A4C5618BC4654F8625780E00596064.0001 - Page: https://openairdocs.org/tcds/1E13 ## Models (11) As the data sheet lists them. - TVO-435-D1B - TVO-435-A1A - TVO-435-E1A - O-435-25 - TVO-435-C1A - TVO-435-B1B - TVO-435-B1A (O-435-25A) - TVO-435-G1B - TVO-435-D1A - TVO-435-F1A - TVO-435-G1A ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text DEPARTMENT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION 1E13 Revision 8 Lycoming Engines TVO-435-A1A O-435-25 TVO-435-B1A (O-435-25A), -B1B, -C1A TVO-435-D1A, -D1B, -E1A, -F1A, -G1A, -G1B November 04, 2010 TYPE CERTIFICATE DATA SHEET NO. 1E13 Engines of models described herein conforming with this data sheet (which is a part of type certificate No. 1E13) 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 Civil Air Regulations/Federal Aviation Regulations provided they are installed, operated and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. Type Certificate Holder Lycoming Engines An Operating Division of AVCO Corporation Williamsport, Pennsylvania 17701 Type Certificate Holder Record Avco Lycoming Division, Avco Corp. transferred TC 1E13 to Lycoming Engines, An Operating Division of AVCO Corporation on November 04, 2010 Model: Lycoming TVO-435-A1A TVO-435-B1A(-25A), -B1B TVO-435-C1A TVO-435-D1A, -D1B Type: 6HOA Vertical Mounted Direct Drive Turbosupercharged Rating (See NOTE 5) Max. continuous, hp., r.p.m., in. Hg., at: Rated pressure altitude ft. 220-3200-30. 0-20,000 220-3200-30. 3-20,000 250-3200- 34.8-20,000 220- 3200-27.8-20,000 Sea level pressure altitude ft. 220-3200-27.2- S.L. 220-3200-27.5-S. L. 250-3200-30.0-S.L. 220-3200-26. 4-S.L. Takeoff (5 min.), hp., r.p.m., in. Hg., at: Rated pressure altitude ft. 260-3200-33. 2-15,000 270-3200-35. 1-14,000 280-3200- 37.0.16,000 270- 3200-35.0-18,000 Sea level pressure altitude ft. 260-3200-31.7- S.L. 270-3200-32.8-S. L. 380-3200-34.0-S.L. 270-3200-32. 0-S.L. Fuel (minimum grade aviation gasoline) 100/130 - - - - - - Lubricating oil (lubricants should Latest Edition of Lycoming conform to the specifications as listed Service Instruction No. 1014 - - - - - - or to subsequent revisions thereto.) Bore and stroke, in. 4.875 x 3.875 - - - - - - Displacement, cu. in. 434.0 - - - - - - Compression ratio 7.3:1 - - - - - - Weight (dry), lb. See NOTE 8 - - - - - - C.G. Location (dry and in horizontal position) From front face of crankcase, in. 15.30 15.92 - - 15.30 Off crankshaft C.L., in. 1.13 below 2.00 below - - 1.55 below 0.10 right 0.75 left - - 0.45 left Propeller shaft Flange type power takeoff - - - - - - Crankshaft dampers & balancers None - - - - - - Carburetion# Marvel-Schebler + MA-6AA - - - - - - Turbosupercharger – Kelly Aerospace* models (NOTE 5) T-1108 - - T-1112 TE-0659 Ignition, dual See NOTE 8 - - - - - - Timing BTC 25 - - - - - - Spark plugs See NOTE 9 - - - - - - Oil sump capacity Dry sump - - - - -- NOTES 1 thru 10 - - - - - - Model: Lycoming O-435-25 TVO-435-F1A TVO-435-E1A TVO-435-G1A, -G1B Type: 6HOA Vertical Mounted Direct Drive Turbosupercharged Rating (See NOTE 5) Max. continuous, hp., r.p.m., in, Hg., at: Rated pressure altitude ft. 220-3200-30. 0-20,000 250-3200-32. 0-20,000 220-3200- 27.8-20,000 220- 3200-27.9-20,000 Sea level pressure altitude ft. 220-3200-27.2- S.L. 250-3200-29.7-S. L. 220-3200-26.4-S.L. 220-3200-26. 5-S.L. Takeoff (5 min.), hp., r.p.m., in. Hg., at: Rated pressure altitude ft. 260-3200-33. 2-15,000 280-3200-37. 0-18,000 260-3200- 32.7-26,000 280- 3200-37.0-18,000 Sea level pressure altitude ft. 260-3200-31.7- S.L. 280-3200-33.3-S. L. 260-3200-30.8-S.L. 280-3200-33. 3-S.L. Fuel (minimum grade aviation gasoline) 100/130 - - - - - - Lubricating oil (lubricants should MIL-L-6082 conform to the specifications as listed Latest Edition of Lycoming - - - - - - or to subsequent revision thereto.) Service Instruction No. 1014 Bore and stroke, in. 4.875 x 3.875 - - - - - - Displacement, cu. in. 434.0 - - - - - - Compression ratio 7.3:1 - - - - - - Weight (dry), lb. See NOTE 8 - - - - - - C.G. Location (dry and in horizontal position) From front face of crankcase, in. 15.92 15.94 15.50 - - Off crankshaft C.L., in. 2.00 below 1.75 below 1.55 below - - 0.75 left 0.69 left 0.45 left - - Propeller shaft Flange type power takeoff - - - - - - Crankshaft dampers & balancers None - - - - - - Carburetion# Marvel-Schebler + MA-6-AA - - - - - - Turbocharger – Kelly Aerospace* models (NOTE 5) T-1108 TK-0659 - - - - Ignition, dual See NOTE 8 - - - - - - Timing BTC 25 - - - - - - Spark plugs See NOTE 9 - - - - - - Oil sump capacity, qt. Dry sump 10 Dry sump - - Usable oil (nose 15 up or down)  6   NOTES 1 thru 11 1,2,3,4,5,6,7,8,9,10,12 1 thru 10 - - "- -" indicates "same as preceding model" "" indicates "does not apply" # See latest edition of Lycoming SI 1523 for alternate approved Carburetors + Marvel-Schebler formerly Volare, Precision Airmotive Corporation, Facet Aerospace Products Company, and Borg Warner Corporation * Kelly Aerospace, formerly AiResearch Certification basis: Date Type Certificate Regulations and Amendments Model Date of Application 1E13 Issued/Revised CAR 13 As Amended to June 15, 1956 TVO-435-A1A January 5, 1961 May 12, 1961 13-1, 13-2, 13-3 TVO-435-B1A July 24, 1962 November 21, 1962 13-4 TVO-435-C1A October 24, 1962 November 21, 1962 O-435-25 May 29, 1963 June 10, 1963 FAR 33, 33-1 Effective February 1, 1965 TVO 435-D1A March 4, 1966 March 10, 1966 O-435-25A March 4, 1966 March 10, 1966 TVO-435-B1B June 20, 1966 June 20, 1966 33-2 TVO-435-D1B January 17, 1967 February 23, 1967 TVO-435-E1A January 17, 1967 March 7, 1967 33-3 TVO-435-F1A May 17, 1967 January 22, 1968 O-435-G1A December 28, 1967 January 11, 1968 O-435-G1B November 15, 1968 November 25, 1968 Production basis: Production Certificate No. 3. NOTE 1. Maximum permissible temperatures: E x h a u s t G a s Cylinder Head Cylinder Oil (Turbo Inlet at Location Shown Carburetor (Well Type Thermocouple) Base * Inlet on Lycoming Dwg. No. 63147) ** Inlet Air 500 F 300 F 235 F 1650 F 325 F (A1A), (D1A) 3 2 5 F (O-435-25) 330 F (B1A), (B1B) 3 2 0 F (C1A) 3 2 5 F (O-435-25), (D1B) (E1A), (F1A), (G1A), (G1B) * This parameter dispensed with where pistons internally cooled by oil jets. (See NOTE 10) ** Drawing No. 63251 for -D1A, -D1B, -E1A, -G1A & -G1B; Drawing No. 63282 for -F1A. NOTE 2. Pressure range and temperature rise. M a x i m u m M i n i m u m Idle Fuel Pressure Limits: (above carburetor entrance air pressure) (at inlet to carburetor) 8 p.s.i. 4 p.s.i. Oil pressure limits: 70 p.s.i.. (O-435-25 75  10) 50 p.s.i. 25 p.s.i. (Model -F1A) 85 p.s.i. 65 p.s.i. 25 p.s.i. Carb. Inlet Air Pressure Manifold Pressure Compressor Temperature Model (Max.) in. Hg. (Max.) in. Hg. Rise (Max.) F TVO-435-A1A 38 34.5 240 -B1A, -B1B 39 37 240 -C1A 41 39 230 -D1A, -D1B 39 37 220 -E1A 38 34 240 -F1A, -G1A, -G1B 39 37 220 O-435-25 38 34.5 240 NOTE 3. The following accessory provisions are available: Accessory All Except -F1A -F1A Rotation Facing Drive Pad Speed Ratio to Crankshaft Maximum Torque (in. -lb.) Cont. Static Maximum Overhang Moment (in. -lb.) Starter *  c 1.000:1  12,000 300 Alternator  * cc 2.250:1 60 400 175 Generator *** *  c 2.600:1 500 2,200 400 Fuel Pump *  cc .803:1 25 450 25 Vacuum Pump *  c 1.219:1 200 800 25 Vacuum Pump  * c 1.105:1 200 800 25 Hydraulic Pump **  c 1.083:1 400 1,650 175 Tachometer *  cc .500:1 7 50  Tachometer  * cc .500:1 7 50 5 Dual drives mounting on hydraulic pump pad: Hydraulic Pump  * c 1.105:1 400 1,650 175 Fuel Pump  * c .789:1 25 450 25 * Standard ** Supplied as optional equipment. *** Not available as generator drive when fitted with hand crank starter jaw. NOTE 4. This engine is approved for helicopter appli cation and operation in a vertical mount installation. NOTE 5. These engine models are equipped with Kelly Aerospace (formerly AiResearch) turbosupercharger Models T-1106, T-1112 or TE-0659, as indicated on pages 1 and 2 of this data sheet. An integral automatic power control makes standard day, sea level ratings available at other than standard conditions up to critical altitudes. Performance data for these engines are presented on Lycoming Curve Nos. 12814 (A1A), 12886 (B1A (-25A), and (B1B), 12888 (C1A), 13023 (D1A and D1B), 13057 (E1A), 13076 (F1A), 13092 (G1A and G1B), and 12814 (O-435-25). NOTE 6. The turbocharger control is servo-operated from either e ngine oil or an external supply of MIL-H-5606 hydraulic fluid at a pressure of 60 - 70 p.s.i. This control is not equipped to use "Skydrol" fluid. NOTE 7. The turbocharger meets the containment requirements of CAR 13.116 and does not require external protection. NOTE 8. Ignition and Weights: Models Ignition, dual # Weight (dry) lb. TVO-435-A1A TCM S6RN-200 & S6LN-204 468 -B1A, (-25A) TCM S6RN-200 & S6LN-204 478 -B1B TCM S6RN-1208 & S6LN-1209 479 -C1A TCM S6RN-200 & S6LN-204 478 -D1A TCM S6RN-1208 & S6LN-1209 465 -D1B TCM S6RN-200 & S6LN-204 464 -E1A TCM S6RN-200 & S6LN-204 462 -F1A TCM S6LN-1208 & S6RN-1209 490 -G1A TCM S6RN-1208 & S6LN-1209 465 -G1B TCM S6RN-200 & S6LN-204 464 O-435-25 TCM S6RN-200 & S6LN-204 493 # TCM formerly Bendix. NOTE 9. Spark plugs: See latest revision of Lycomi ng Service Instruction No. 1042 for approved equipment. NOTE 10. These engines incorporate the following similarities or differences: Model Characteristics TVO-435-A1A Six cylinder, air cooled, horizontally opposed, ve rtical mounted, direct drive turbosupercharged engine with internal piston cooling oil jets. TVO-435-B1A Similar to -A1A except that cylinder assemblies are machined for long reach spark plugs. TVO-435-B1B Same as -B1A except has TCM (form erly Bendix) S6RN-1208 and S6LN-1209 magnetos. TVO-435-C1A Similar to -B1A except incorporates T-1112 turbosupercharger. O-435-25 Military model similar to -A1A except has cylinder assemblies similar to -B1A. TVO-435-D1A Similar to TVO-435-B1A except incorporates TK-0659 turbosupercharger and TCM (formerly Bendix) S6RN-1208 (retard breaker) and S6LN-1209 magnetos. TVO-435-D1B Same as -D1A except for incorporati on of TCM (formerly Bendix) S-200 series magnetos. TVO-435-E1A Same as -A1A except for incorporation of Kelly Aerospace (formerly AiResearch) TK-0659 turbosupercharger. TVO-435-F1A Similar to -D1A except is wet sump, ha s different accessory section and higher power rating. TVO-435-G1A Similar to -D1A except has different automa tic waste gate control setting for higher power rating. TVO-435-G1B Same as -G1A ex cept has different magnetos. NOTE 11. Military Models O-435-25 and O-435-25A are simila r and identical to TVO-435 Models -A1A and -B1A, respectively. When installed in certificated aircraft , the corresponding civil model designation and type certificate number should be added to the engine data plate. NOTE 12. Starters, generators and alternat ors approved for use on these engines are listed in the latest revision of Lycoming Service Instruction No. 1154 (-F1A only). . . . END . . . ``` ## ADs (13, in force first) - [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026 - [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022 - [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 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010 - [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 89-04-02](https://openairdocs.org/ad/89-04-02): Carburetors · Continental Motors O-470-11, O-470-11-CI, O-470-11B and 175 more. Effective Mar 8, 1989 - [AD 80-04-04 R1](https://openairdocs.org/ad/80-04-04-R1): Crankshaft Flange Bolts · Lycoming Engines IVO-540-A1A, TIVO-540-A2A, TVO-435-A1A and 38 more. Effective Aug 18, 1980 - [AD 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 1969 - [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 - [AD 68-08-08](https://openairdocs.org/ad/68-08-08): Hydraulic Valve · Lycoming Engines IGSO-480-A1A6, IGSO-480-A1B6, IGSO-480-A1C6 and 44 more. Effective May 19, 1968 - [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024 ## Registered aircraft by registry model (OpenAirDocs) - [Lycoming TVO-435-B1A](https://openairdocs.org/engine/lycoming-tvo-435-b1a): 2 aircraft (registry code 41938) - [Lycoming TVO-435-D1A](https://openairdocs.org/engine/lycoming-tvo-435-d1a): 2 aircraft (registry code 41941) - [Lycoming TVO-435-A1A](https://openairdocs.org/engine/lycoming-tvo-435-a1a): 1 aircraft (registry code 41937) - [Lycoming TVO-435-F1A](https://openairdocs.org/engine/lycoming-tvo-435-f1a): 1 aircraft (registry code 41944) - [Lycoming TVO-435-G1A](https://openairdocs.org/engine/lycoming-tvo-435-g1a): 1 aircraft (registry codes 41946, 41746) - [Lycoming 0-435-25](https://openairdocs.org/engine/lycoming-0-435-25): 0 aircraft (registry code 41943) - [Lycoming TVO-435-B1B](https://openairdocs.org/engine/lycoming-tvo-435-b1b): 0 aircraft (registry code 41939) - [Lycoming TVO-435-C1A](https://openairdocs.org/engine/lycoming-tvo-435-c1a): 0 aircraft (registry code 41940) - [Lycoming TVO-435-D1B](https://openairdocs.org/engine/lycoming-tvo-435-d1b): 0 aircraft (registry code 41942) - [Lycoming TVO-435-E1A](https://openairdocs.org/engine/lycoming-tvo-435-e1a): 0 aircraft (registry code 41945) - [Lycoming TVO-435-G1B](https://openairdocs.org/engine/lycoming-tvo-435-g1b): 0 aircraft (registry code 41947) ## STCs approved under this data sheet (14) - [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive.. Alcor LLC - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal.. Ly-Con Rebuilding Company - [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 SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters.. Cygnet Aerospace Corp - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings.. Continental Motors, Inc. - [STC SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013.. Exxon Company USA - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector.. Aviation Development Corporation - [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil.. Mobil Research & Development Corp - [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 SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines.. Perrigo & Steele Aircraft Engr Company - [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less.. Bel-Ray Company, Inc - [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines.. AMS/OIL - [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines.. Kling Oil Company --- 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.