# Lycoming O-435-K - Type: Engine model (FAA registry) - Registry code: 42066 - Manufacturer (registry): LYCOMING - Model: O-435-K - Engine type: Reciprocating - Power: 250 hp - Data sheet: [TCDS E-228](https://openairdocs.org/tcds/E-228) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 0 registered aircraft - Page: https://openairdocs.org/engine/lycoming-o-435-k Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [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 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 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 Effective Jan 16, 1969 Historical (superseded or no longer in force): - [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and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 ## Information bulletins (advisory) (2) - [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019 - [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014 ## Registered aircraft None registered with this engine model now. ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## STCs that may be installed (OpenAirDocs) (8) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [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 SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc - [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. Lists O-435 Series - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company - [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc - [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 SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation ## PMA parts (OpenAirDocs) (493, first 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 engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [72-231114-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157761992320260722204351.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jul 17, 2026 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180471105320240301172647.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169748273120240301172659.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID106806348320240301172652.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194140969320240301172653.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Nov 9, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188639595920240301172657.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Nov 9, 2023 - [TA2927-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID196557185220231109131559.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 31, 2023 - [TA2927-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168120339420231109131600.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 31, 2023 - [ES10-400549-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171063566420230929175040.0001): 200 Series Frame, Lyc Flange. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-400549-4 · Jul 17, 2023 - [ES10-400551-7](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID109617963720231025135104.0001): Housing, Distributor. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-400551-7 · Apr 1, 2023 - [ES10-25788ES10-25788ES10-25788](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142288884620230703154009.0001): Bearing, SleeveBearing, SleeveBearing, Sleeve. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-357078, 10-25788, 73610-357078… · Mar 20, 2023 - [SL31CD-17 P003](https://drs.faa.gov/browse/excelExternalWindow/F659E4EB8DB01695862585FB0034F5D9.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-17-P03 · Oct 6, 2020 - [SL31CD-16 P012](https://drs.faa.gov/browse/excelExternalWindow/F266CA7E477307DC862585FB0034F5A4.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-16-P12 · Oct 6, 2020 - [SL31CD-13 P012](https://drs.faa.gov/browse/excelExternalWindow/E656978A9DBFB875862585FB0034F397.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-13-P12 · Oct 6, 2020 - [SL31CD-8 P003](https://drs.faa.gov/browse/excelExternalWindow/CAF2AF0E913FE9BD862585FB0034EF24.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-8-P03 · Oct 6, 2020 - [SL31CD-12 P007](https://drs.faa.gov/browse/excelExternalWindow/C54ACF40782DEBC8862585FB0034F27F.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-12-P07 · Oct 6, 2020 - [SL31CD-16 P007](https://drs.faa.gov/browse/excelExternalWindow/BF0A4986950E56BF862585FB0034F569.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-16-P07 · Oct 6, 2020 - [SL31CD-9 P003](https://drs.faa.gov/browse/excelExternalWindow/B9F7D60B38AEE8DF862585FB0034F034.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-9-P03 · Oct 6, 2020 - [SL31CD-9 P012](https://drs.faa.gov/browse/excelExternalWindow/B1D44CBED84E8BAB862585FB0034F0B2.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-9-P12 · Oct 6, 2020 - [SL31CD-17 P012](https://drs.faa.gov/browse/excelExternalWindow/AAC574021811F7CE862585FB0034F64F.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-17-P12 · Oct 6, 2020 - [SL31CD-14 P007](https://drs.faa.gov/browse/excelExternalWindow/A90ED71F550BACC8862585FB0034F411.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-14-P07 · Oct 6, 2020 - [SL31CD-14 P003](https://drs.faa.gov/browse/excelExternalWindow/A13F7190860A5D16862585FB0034F3D2.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-14-P03 · Oct 6, 2020 - [SL31CD-10 P007](https://drs.faa.gov/browse/excelExternalWindow/909ECAA97B419CBC862585FB0034F131.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-10-P07 · Oct 6, 2020 - [SL31CD-11 P007](https://drs.faa.gov/browse/excelExternalWindow/85D88C32D876EA1A862585FB0034F1E3.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-11-P07 · Oct 6, 2020 - [SL31CD-19 P007](https://drs.faa.gov/browse/excelExternalWindow/84E2AF0EBBEC6946862585FB0034F760.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-19-P07 · Oct 6, 2020 - [SL31CD-18 P003](https://drs.faa.gov/browse/excelExternalWindow/83C21036C578A11E862585FB0034F685.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-18-P03 · Oct 6, 2020 - [SL31CD-17 P007](https://drs.faa.gov/browse/excelExternalWindow/7CD6BAAF107F8D1C862585FB0034F61B.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-17-P07 · Oct 6, 2020 - [SL31CD-11 P012](https://drs.faa.gov/browse/excelExternalWindow/61B9AA1F8A4F064A862585FB0034F216.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-11-P12 · Oct 6, 2020 - [SL31CD-12 P003](https://drs.faa.gov/browse/excelExternalWindow/610CC23D8A41275E862585FB0034F24A.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-12-P03 · Oct 6, 2020 - [SL31CD-18 P007](https://drs.faa.gov/browse/excelExternalWindow/5C12B8DDD82D9281862585FB0034F6BC.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-18-P07 · Oct 6, 2020 - [SL31CD-15 P007](https://drs.faa.gov/browse/excelExternalWindow/5A14FE3AEE830F88862585FB0034F4C3.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-15-P07 · Oct 6, 2020 - [SL31CD-15 P012](https://drs.faa.gov/browse/excelExternalWindow/4E3376F54122A5E7862585FB0034F4FB.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-15-P12 · Oct 6, 2020 - [SL31CD-12 P012](https://drs.faa.gov/browse/excelExternalWindow/4E2CCD6B7D09F406862585FB0034F2CD.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-12-P12 · Oct 6, 2020 - [SL31CD-19 P012](https://drs.faa.gov/browse/excelExternalWindow/4A7F1CEBDC2B2B15862585FB0034F797.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-19-P12 · Oct 6, 2020 - [SL31CD-18 P012](https://drs.faa.gov/browse/excelExternalWindow/479EDD643567685C862585FB0034F6F1.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-18-P12 · Oct 6, 2020 - [SL31CD-10 P012](https://drs.faa.gov/browse/excelExternalWindow/4743668405E3D15B862585FB0034F164.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-10-P12 · Oct 6, 2020 - [SL31CD-9 P007](https://drs.faa.gov/browse/excelExternalWindow/4488E7B00B7501F0862585FB0034F074.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-9-P07 · Oct 6, 2020 - [SL31CD-8 P012](https://drs.faa.gov/browse/excelExternalWindow/436383DD3B3D8363862585FB0034EFD6.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-8-P12 · Oct 6, 2020 - [SL31CD-13 P003](https://drs.faa.gov/browse/excelExternalWindow/3E1B69414595A42C862585FB0034F30D.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-13-P03 · Oct 6, 2020 - [SL31CD-13 P007](https://drs.faa.gov/browse/excelExternalWindow/32FD75DFFAD35481862585FB0034F351.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-13-P07 · Oct 6, 2020 - [SL31CD-15 P003](https://drs.faa.gov/browse/excelExternalWindow/1BF381BEEEB593B2862585FB0034F48E.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-15-P03 · Oct 6, 2020 - [SL31CD-8 P007](https://drs.faa.gov/browse/excelExternalWindow/1A508ECE8D5AB582862585FB0034EF89.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-8-P07 · Oct 6, 2020 - [SL31CD-16 P003](https://drs.faa.gov/browse/excelExternalWindow/18A0A55968579686862585FB0034F535.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-16-P03 · Oct 6, 2020 - [SL31CD-19 P003](https://drs.faa.gov/browse/excelExternalWindow/154F8554D4C3BC96862585FB0034F725.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-19-P03 · Oct 6, 2020 - [SL31CD-14 P012](https://drs.faa.gov/browse/excelExternalWindow/07DCD7FAD92CAC59862585FB0034F451.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-14-P12 · Oct 6, 2020 - [SL31CD-11 P003](https://drs.faa.gov/browse/excelExternalWindow/04AD064349964D9D862585FB0034F1AF.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-11-P03 · Oct 6, 2020 - [SL31CD-10 P003](https://drs.faa.gov/browse/excelExternalWindow/0378D9605645B1E6862585FB0034F0F2.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-10-P03 · Oct 6, 2020 - [SL31CD-47 P003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197288088720220408140028.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-47-P03 · Aug 3, 2020 - [SL31CD-45 P012](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194044587920220408140006.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-45-P12 · Aug 3, 2020 - [SL31CD-45 P007](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191943452220220408140001.0001): Stud, 5/16 IN DIA, Coarse Thread. Superior Air Parts Inc · PMA PQ0060SW · Replaces 31CD-45-P07 · Aug 3, 2020 All of them: https://openairdocs.org/engine/lycoming-o-435-k/pma.md --- 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.