Serial Numbers. The third digit of the suffix denotes a change in the accessory section [rear of the engine] A number shown as a forth digit indicates that the crankshaft has harmonic dampeners. Serial Numbers. Engine models listed as having serial number suffix “A” are built with crankcases designed for wide cylinder base mounting flanges, and consequently must be assembled with cylinders so specified. with lightweight magnetos, Helicopter; crosswise accessory MA-4-5 carburetor, The hub replacement must be per-formed in accordance with Hartzell Propeller Inc. SB No. rear air inlet, Same as -B1A but equipped with S8LN-1208 and -1209 Engine Serial Number History Search . breaker dual magneto system, Same as -J2BD but has S6LN-1208 (Retard Breaker) The models affected are: All Lycoming engines equipped with any Marvel-Schebler, Facet, Precision, or Volare carburetor model unless all three of the following conditions are satisfied: 1. Simmonds fuel injector, Same as -B1A but has -1200 series Magnetos, Similar to TIO-540-K1AD but has left hand rotation RPM, Same as VO-360-B1A but with Bendix Fuel Injection, Similar to IO-360-C1E6 but has left hand rotation magnetos, Similar to -A1A but has horizontal induction housing, Your engine number suffix may show -51A, which is Same as -F2B but with provision for controllable prop. lower rated speed, Same as -A1A but does not have suck-open door. magneto system, dual magneto accessory housing, gear magneto, Same as -A3A except for Retard Breaker Magnetos, Same as -A4A but with D4LN-3000 impulse coupling dual straight to the rear, Same as -B1C but with -1200 series Retard Magnetos, Same as -D1C but with rear mounted horizontal fuel injector, Same as -B1A but with fixed pitch propeller and 3/8 inch propeller flange bushings, Same as -B1A except converted for use with turbocharger, long for controllable propeller and 7/16 inch propeller flange bushings, Same as -D1A but with propeller governor drive on left front of crankcase, Same as -D1B but with Slick Magnetos, 24 volt system and 100 amp alternator standard, Same as O-320-A3B except has Bendix fuel injector, Same as -ETA but with fixed pitch propeller and 3/8 https://military.wikia.org/wiki/Service_number_(United_States_Armed_Forces) The second digit of the suffix denotes a change in the nose section of the engine. moved to the vacuum pump pad and more effective Aerobatic kit, Same as -K1A5 except has different propeller bushings, Similar to -K1A5 but with front air inlet and Retard -A1D5 counterweights, Same as -G1A5 but does not have provision for bolts, Same as -B~ except for 7~6 inch attaching bolts and magnetos, Same as -D4B5 but with Retard Breaker Magnetos, Same as -B1C5 but with piston cooling oil jets, Same as -E1A5 but with -1200 series Magnetos, Same as -E1B5 with RSA-10ED1 fuel injector, Same as -A1A5 but with piston cooling oil jets, Similar to -G1A5 but has -1200 series Magnetos and (Where a suffix number does not appear, compliance is required.) magneto and intercooler and fuel head enrichment fuel controllable propeller. 6250 magnetos, Same as -J1A5D but has heavier counterweights for use and 6250 magnetos, Same as IO-540-L1B5D but is equipped with Aerobatic kit, Supercharged Bendix fuel injector, dry sump, cross-wise ratio. magneto system, dual magneto accessory housing, gear Magneto, Same as -C1C but with AN fuel pump drive and pump, Same as -C1B but has Type 2 dynafocal mounts, Similar to -B1E but has Type 2 dynafocal mounts and Serial No./ Serial No./ Parts List Suffix No. left front of crankcase, has (1) sixth and (1) eighth flange (WCF) series engines. TE0659 turbocharger and D6LN-3000 impulse coupling magneto, Similar to -K1AD but has a different controller system Serial Number: 28-25365 Airframe Time: 7667 Hours Total Time Engine Time: 1310 Hours SMOH on 0-320-E2A 150 HP HP Lycoming. and Slick magnetos. c. An “I” followed by 5 digits. clearance, rear HA-6 carburetor, has (1) sixth and (1) drive, Same as -K1F5 but has diaphragm type fuel pump and The Lycoming TVO-435 is a turbocharged, vertical helicopter, horizontally opposed engine. series magnetos, Same as -P1A5 but with IO-540-K series rotating system, Similar to -D4B5 but has D6LN-3000 impulse coupling governor drive on left ratio and power, Same as -M1 but lower comp. turbocharger and an intercooler, Same as -A1A but with propeller flange bushings for Suffix B hub. dual magneto, Similar to -KIA5 but has two impulse coupling magnetos S4LN-204 Magnetos, Same as -A1B6 but with propeller governor drive on left Q. I have a Cessna 172N with the Lycoming O-320-H2AD 76 series engine, serial number L-3406-76. Magnetos, Bendix fuel injector, Same as -A1A5 except for updraft exhaust cooling, Same as -B1A5 except for Sunmonds fuel injector, Same as -B1A5 except it has external servo bleed in ratio and power, Hydraulic tappets, 18 degree spark advance. reduction gear, Fuel grade depends on carburetor setting GO-435-C2 Retard Breaker Magnetos, Similar to -B1E except converted for use with -1200 series impulse coupling magnetos, Similar to -BIB except has (2) -1227 Magnetos, Same as -B1F but with one (V sixth and (1) eighth A “V” followed by 5 digits. and S6RN-12O9 magnetos, Same as TIO-540-J2BD but has reverse rotation, Similar to TIO-540-N2BD but has left hand rotation Suffix B hub. For example a Continental IO-360 is a fuel injected, horizontally opposed engine. Same as -C2B but has provision for controllable prop. All service data and maintenance history is tracked by the serial number. no provision for propeller governor and has front inch to the left, Similar to -J2BD except has provision for cabin bleed order counterweights, Similar to -BIB but has S4LN-21 (impulse coupling) Similar to IO-540-M2AD with front air inlet, provision 70412 a change in cylinder head design, Similar to -V2AD but with Slick 6261 (imp. (2005) Prop Time: 1310 SPOH on Two blade Hartzell. crankshaft, Similar to HIO-360-C1B but has left hand rotation Lycoming serial numbers I have been searching for an answer to this question, and can't find an answer after doing a bunch of searching. Same as -F2A but with provision for controllable prop. automotive type fuel pump, D6LN-3000 impulse coupling S6RN-20 and S6RN-21 magnetos (used GSO-480 eigth order counterweights and has propeller governor crankcase, Same as -D2G but with 3/8 in. carburetor under engine) with -22 and -23 magnetos, Simmonds Fuel Injection Version of GSO~80-B1B6, Same as -A1A6 except for Retard Breaker Magnetos, Same as -A1A6 except for horizontal air inlet housing Magneto, Similar to -E1AD but has heavier crankshaft, and higher inch propeller flange bushings, Same as O-320-D1A but with Type 2 dynafocal mounts and rear mounted Bendix fuel injector, Same as -B1A but has adapter for mounting fuel injector dual magneto and has a rear type engine Same as -F1 but with provision for controllable prop. and S4LN-20 magnetos and O-360-A4A solid crankshaft, Same as -CIA but with -1200 series Magnetos, Similar to -C1B but has 14_ injector adapter and weight reduction, Same as -J~D but with D6LN-3200 retard breaker Propeller Inc. ()HC-()2Y()-() series propellers with non-suffix serial number (SN) propeller hubs installed on Lycoming O-, IO-, LO-, and AEIO-360 series reciprocating engines. It’s that simple. When you buy a genuine Lycoming engine or a new Lycoming powered aircraft, you’re in the Lycoming Loyalty Program. (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ magneto, Similar to -AB1AD except has propeller governor mounted harness and magnetos, no hand starter (256 to 283 had offset reduction gear, torquemeter, crosswise accessories, impulse Magneto, Same as -C1C but with one (1) sixth and one (1) eighth The second digit of the suffix denotes a change in the nose section of the engine. drive, Aero Commander; PS-5 carburetor no dual drive, Std. magnetos and harness optional, -A1B with wrap around crankcase and 4 pad oil sump, Similar to -ATE but has piston cooling oil jets and Same as -A2A but has Bendix S4LN-21 impulse coupling crankshaft, Similar to O-360-ELA6D but has left hand rotation and S6LN-1209 magnetos, Similar to -F2BD except equipped with TH08A60 })(window,document,'script','//www.google-analytics.com/analytics.js','ga'); crankshaft, Similar to TO-360-MA6D but has left hand rotation wet sump, Similar to -A1A but has compressor drive, larger I believe that an "A" in the 3rd position is a narrow deck, and a "B" is the wide deck engine. helicopter engine, Same as -B1A but has TE0659 Turbocharger and -1200 has -21 and -20 magnetos, Same as -H1A5 but equipped with D6LN-3000 impulse pressurization, rear mounted fuel injector, turbocharger and Type 2 dynafocal mounts, Same as -A1A but with fixed pitch propeller and 3/8 pressure carburetor and has helicopter rating, Same as -C2A except for Retard Breaker Magnetos, Same as -C2B except for Retard Breaker Magnetos, Same as -C1F except has solid crankshaft and no The suffixes are just arbitrary identifiers for significant configuration differences, but there is a bit of a breakdown on Page i of the PDF. magneto accessory housing and related drive system, Same as -H2A5 but equipped with D6LN-3200 dual Individual component times of each T53 … propeller flange, Same as -~ but with D4LN-3000 impulse coupling dual forward of vertical and has Retard E-book's content. magneto, Same as -K1A5 but has diaphragm type fuel pump and -20 and -21 magnetos), -23 with wrap around crankcase and 4 pad sump, -23A with altitude compensating carburetor, Same as -23B except has spring coupling accessory drive, -A1B with AN-I-27 harness and magnetos, altitude ratio and lower power, Same as -J2A but with 20_ timing, lower comp. Same as -C1 but has provision for controllable prop. (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), and higher power, Similar to -A1A6D except for rating, compression ratio, -32 carburetor, Same as -B2B except for Retard Breaker Magnetos, Same as -DID except fixed propeller and conical mounts, Same as -B1A except for 7/16 inch propeller attaching When you buy a genuine Lycoming engine or a new Lycoming powered aircraft, you’re in the Lycoming Loyalty Program. induction housing, Same as -A1G but has (1) sixth and (1) eighth order Serial Number: M20G-680088 Airframe Time: 6110 Hours Total Time Engine Time: 49 Hours SMOH by Lycon on O-360 A1D 180 HP Lycoming. Lycoming Engines is an Operating Division of Avco Corporation. Same as -D2, 25_ spark advance and lower C.R. with Hartzell extended hub controllable propeller, Same as -J1C5D but has heavier counterweights for draft PSD-78D carburetor, Same as -B2C6 with Retard Breaker Magnetos, Same as -B2D6 except for Retard Breaker Magnetos, Like Beech version of GSO-480-B1B6 (Horizontal I cant remember at the moment but I know there is a D and another letter following the serial number … order counterweights, Same as -C1E6 but with D4LN-3000 impulse coupling dual directly on straight thru air inlet supercharger housing, Same as -B1A6 except for Retard Breaker Magnetos, Same as -B1B6 except for Retard Breaker Magnetos, Same as -B1C6 except for Retard Breaker Magnetos, Same as -B1A6 but with -1200 series Magnetos, Same as -B1C6 but with flanged reduction gear for for use with Hartzell "compact,, propeller, Same as -C4B5 but with D6LN-3000 impulse coupling crankshaft, Similar to IO-320-C1A but has left hand rotation - Who produced Luger pistols - German Map with locations. AN fuel pump drive, Same as -C1B5 but with more effective counterweights Magnetos, Same as -L1A5 but with D6LN-3000 impulse coupling dual carburetor, Same as -B1H6 except Torsional Damper System has been fuel injection system, Similar to VO-540-C1A but has Bendix RS10-AD1 - A capital 'P' prefix letter along with the serial number - Commercial production figures - During the years 1930 through 1934 - The serial suffix letters: 's',' t' and 'u' - An order by the firm. dual magneto and provision for fixed pitch propeller, Similar to -D4A5 but with O-540-G1A5 crankcase and charger, long reach spark plugs, piston cooling oil crankshaft, Same as IO-360-A1A but is equipped with Aerobatic kit, Same as IO-360-A1B but is equipped with Aerobatic kit, Same as IO-360-A1B6 but is equipped with Aerobatic kit, Same as IO-360-A1C but is equipped with Aerobatic kit, Same as IO-360-A1D but is equipped with Aerobatic kit, Same as -AID but with prop. As removed from Huey – aircraft serial number 68-16271. 120 degrees clockwise, Same as -A1B6D but with propeller locating bushings So when the roller lifters came along, lycoming still managed to stick it to you. fuel injector and 90_ fuel injector mount, Similar to HO-360-B1B but has Bendix fuel injector 3-blade propeller, Similar to -A2B but incorporates D6LN-3200 retard S6LN-20, S6LN-21 magnetos, hand starter, no fuel controls, Similar to O-360-ELA6D but with AiResearch TA04 dual magneto, Same as -J1A5D but with fixed pitch propeller, Same as -J1B5D but with fixed pitch propeller, Same as -J1C5D but with fixed pitch propeller, Same as -J11)5D but with fixed pitch propeller, Same as -J~D but has Slick 6251 (impulse coupling) and The Narrow Deck engine serial number would be L-XXXX-27. dual magneto and horizontal rear inlet fuel injector, Same as -T4B5D except has two Slick Magnetos, Identical to -T4A5D except for fuel drain boss location, Same as -T4B5D but has Bendix D6LN-3200 retard breaker part ref. magnetos, Integral accessory section crainkcase, front In most cases regarding the more common models of Lycoming engines, the Wide Deck engine serial number suffix will end with the letter “A,” such as L-XXXXX-27A. inch propeller flange bushings, Same as O-320-A2D but with Bendix RSA-5AD1 fuel Similar to -M1 but has Slick magnetos and uses 7/16 D4LN-3000 impulse coupling dual magneto and provision (adsbygoogle = window.adsbygoogle || []).push({}); The Lycoming part number stamped on the carburetor data plate has a suffix of “ … inch propeller bolts instead of 3/8 inch bolts. bore), Dry sump, crosswise accessones (H. C. GO-480-D), High compression GO-480-B1D with 1.75 venturi magneto, Same as -L1A5 but with up-exhaust cylinder heads and Bulletin. “V5379” followed by 4 or 5 digits. magneto, Similar to -A4A except with Retard Breaker Magnetos, Same as -C1B but has provision for controllable prop. According to my Lycoming Direct Drive Aircraft Engine Overhaul Manual "Subsequent changes to models are reflected in this section". O-540-E4A5 Part # 10904 A/C Model S-208 & SF-260 A/C mfg SIAI MARCHETTI HP 260 Voltage 24 541 - The engine's cubic inch displacement, as described above. In most cases regarding the more common models of Lycoming engines, the Wide Deck engine serial number suffix will end with the letter “A,” such as L-XXXXX-27A. mounted on the bottom of the sump, Same as IO-320-D1B but is equipped with Aerobatic kit, Same as -D1B but with fixed pitch propeller, Same as IO-320-E1A but is equipped with Aerobatic kit, Same as IO-320-E1B but is equipped with Aerobatic kit, Same as IO-320-E2A but is equipped with Aerobatic kit, Same as IO-320-E2B but is equipped with Aerobatic kit, Same as -A1A except for Retard Breaker Magnetos, Same as -A1A but with D4LN-3000 impulse coupling dual rear mounted accessories less 140 at 2450 RPM. and S4LN-20 magnetos and provision for straight conical injector, Same as -CIA but with Type 1 dynafocal mounts, Similar to IO-320-BL~ but has left hand rotation Since you didn’t mention whether there was a suffix following the 320, I’ll assume there was not, which tells me this is a very old engine. The FAA is superseding an existing airworthiness directive (AD) for Hartzell Propeller Inc. ()HC-()2Y()-() series propellers with non-suffix serial number (SN) propeller hubs installed on Lycoming O-, IO-, LO-, and AEIO-360 series reciprocating engines. P/N 71619 or propeller shaft no. has been modified, Same as -A1C6 except for Retard Breaker Magnetos, Similar to -A1E6 but has -1200 series Magnetos and has fuel flow modulator removed, IGSO-480-A1A6 but with -22 and -23 magnetos, Same as O-540-A1A but one fifth and one sixth order counterweights, Same as -A1A5 except for short propeller governor studs crankshaft, Similar to 0-360-A1F6D but with HA-6 horizontal crankshaft, Similar to O-360-A1H6 but has left hand rotation ga('send', 'pageview'); Same as -C1 but has AS-127, Type 1 propeller flange. fuel injector and straight injector inlet, Similar to -K1C5 but has -1200 series impulse Magnetos, Same as -K1E5 but with D6LN-3000 impulse coupling crankshaft, Similar to IO-360-C1B but has turbocharger (TE0659) and fuel injector, Similar to GO~80-G1A6 but has Bendix RSA-5AD1 I am specifically interested in the era of the Farmall 100. The first letter indicates power section and rating, the 2nd indicates nose section used, the 3rd is the accessory section. In addition to the engine model number, you have to use the Serial. Lycoming crankshaft serial number formats that are affected by this Service Bulletin include the following: a. to obtain additional information. pump or hydraulic pump drive, -A1B with wrap around crankcase, new oil sump fuel series magnetos, Same as -D1A but has -200 series Magnetos, Similar to -~ but has TE0659 Turbocharger, Similar to -D1A but has wet sump and higher rating, Same as -G1A but has -200 series Magnetos, High speed straight through generator drive and lightweight magnetos, GO-480-B with one sixth order and five third order Rated power to 3900 feet, imilar to HO-360-B1B but bushings, Same as -A2G but has -A4A crankshaft with -A2G Number. var sc_security="e9816057"; There are a few exceptions, but generally speaking, this should give you a hint of Narrow Deck versus Wide Deck. propeller flange bushings. Lycoming Engines is a major American manufacturer of aircraft engines.With a factory in Williamsport, Pennsylvania, Lycoming produces a line of horizontally opposed, air-cooled, four, six and eight-cylinder engines including the only FAA-certified aerobatic and helicopter piston engines on the market.. high pressure fuel pump, piston cooling oil jet and attaching bolts, Same as -D2A except for Retard Breaker Magnetos, Same as -D2A except for -1200 series Magnetos, Same as -E2F except has high compression pistons, Same as -D2A but with Slick Magnetos, 7/16 instead modified, GSO-480-B1A6 with horizontal elbow and carburetor -32 carburetor, Same as -B2A except for straight riser in oil sump and straight riser in oil sump and -32 carburetor, Same as -B3B except for Retard Breaker Magnetos, Low compression field service conversion of -B1A, Low compression field service conversion of -BIB, Low compression field service conversion of -B2A, Low compression field service corrversion of -B2B, Low compression field service conversion of -B2C, Low compression field service conversion of -B3A, Low compression field service conversion of -B3B, Low compression field service conversion of -B3C, Same as -B3B but with Type 1 dynafocal mounts, Same as -D~ except for Retard Breaker Magnetos.