Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming O-145B series

538 aircraft on the U.S. register carry a Lycoming O-145B series engine, rated at about 65 horsepower. The Piper J-3 Cub is the model most often fitted with it (120 aircraft). The aircraft carrying it were built between 1937 and 2002.

The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Lycoming O-145B series. FAA spelling: 0-145B SERIES.

Fitted to model families

Piper J-3 Cub120Piper PA-15108Taylorcraft BL-65100Aeronca 65 Chief and Super Chief62Mooney M-1831Porterfield LP-6519Luscombe 8 Silvaire15Taylorcraft BL1210Piper J4 Cub Coupe5Taylorcraft BC-655Aeronca K4Northwestern PORTERFIELD LP-652

Piper J-3 Cub · Piper PA-15 · Taylorcraft BL-65 · Aeronca 65 Chief and Super Chief · Mooney M-18 · Porterfield LP-65 · Luscombe 8 Silvaire · Taylorcraft BL12 · Piper J4 Cub Coupe · Taylorcraft BC-65

Where they are owner's state

Texas59California36Ohio35Wisconsin28Florida27Washington25New York24Missouri20Michigan20Pennsylvania19

Kind of aircraft

Piston singles537 (100%)Piston twins1 (0.2%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Lycoming O-145B series the component layer

The design is held under 2 type certificates. The FAA has issued 3 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 3 failure reports with the FAA since 1995, 3 of them in the last ten years.

FAA orders 3 airworthiness directives · newest first

2012-03-272012-03-07 · Carburetor · engine

1991-05-2890-04-06 R1 · Propeller Governor External Oil Line · engine

1969-01-1666-06-03 · Connecting Rod Assemblies · engine

Failure reports 3 since · what operators and shops told the FAA

Parts most often reported as the reports name them

Battery Pack1Skin1Wire1

Latest reports

2012-06-14Battery Pack: discharged

2004-10-08Skin: scratched

2003-05-25Wire: broken

Certificates and bulletins

TC 210Type certificate held by Textron Lycoming Avco Corporation · 8 models listed

TC 199Type certificate held by Textron Lycoming Avco Corporation · 2 models listed

Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.

Connections how this engine series links to the rest of the register

Fitted to

Piper J-3 Cub 120 with this engine series
Piper PA-15 108 with this engine series
Taylorcraft BL-65 100 with this engine series
Aeronca 65 Chief and Super Chief 62 with this engine series
Mooney M-18 31 with this engine series
Porterfield LP-65 19 with this engine series
Luscombe 8 Silvaire 15 with this engine series
Taylorcraft BL12 10 with this engine series

Where they are

Texas 59 of these aircraft
California 36 of these aircraft
Ohio 35 of these aircraft
Wisconsin 28 of these aircraft
Florida 27 of these aircraft

Biggest operators

Western Antique Aeroplane & Automobile Museum 2 of these aircraft
Southern Aircraft Consultancy INC Trustee 2 of these aircraft

Airworthiness

FAA orders naming the Lycoming O-145B series 3 airworthiness directives
Failure reports on the Lycoming O-145B series 3 reports since 1995

Analytics

These connections as data: /graph/engine/lycoming-o-145b-series.json · about the eFlight graph.

Aircraft newest certificates first · 538

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N29823	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Washington	Standard	1979-05-03	Valid
N4423H	Piper PA-15	Fixed-wing, single engine	Individual owner Wisconsin	Standard	1978-07-14	Valid
N27891	Piper J4F	Fixed-wing, single engine	Individual owner California	Standard	1978-04-11	Valid
N27242	Porterfield LP-65	Fixed-wing, single engine	Individual owner Missouri	Standard	1977-12-14	Valid
N23602	Taylorcraft BL-65	Fixed-wing, single engine	Gerber D M JR Collinsville, Oklahoma	Standard	1977-08-29	Valid
N37853	Porterfield LP-65	Fixed-wing, single engine	Individual owner Illinois	Standard	1977-06-16	Valid
N29781	Taylorcraft BL12-65	Fixed-wing, single engine	Individual owner Minnesota	Standard	1976-05-24	Valid
N34541	Aeronca 65-TL	Fixed-wing, single engine	Individual owner Missouri	Standard	1975-12-01	Valid
N4441H	Piper PA-15	Fixed-wing, single engine	Individual owner Arizona	Standard	1975-06-04	Valid
N26645	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	1974-03-14	Valid
N29663	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Minnesota	Standard	1974-01-16	Valid
N26513	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner New Hampshire	Standard	1972-11-09	Valid
N27416	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Ohio	Standard	1972-09-28	Valid
N24284	Aeronca 65-LA	Fixed-wing, single engine	Individual owner Mississippi	Standard	1972-07-18	Valid
N4620H	Piper PA-15	Fixed-wing, single engine	Individual owner Mississippi	Standard	1972-04-10	Valid
N28146	Piper J3L-65	Fixed-wing, single engine	Individual owner Georgia	Standard	1971-12-22	Valid
N39092	Luscombe 8B	Fixed-wing, single engine	Individual owner Ohio	Standard	1971-11-09	Valid
N17579	Piper J-2	Fixed-wing, single engine	Individual owner Idaho	Standard	1970-07-01	Valid
N35267	Piper J3L-65	Fixed-wing, single engine	Individual owner California	Standard	1969-12-11	Valid
N27412	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner North Dakota	Standard	1968-08-27	Valid
N40819	Piper J3L-65	Fixed-wing, single engine	Individual owner Indiana	Standard	1968-04-17	Valid
N1232	Kramer WOODY PUSHER	Fixed-wing, single engine	Individual owner Ohio	Experimental	1968-01-26	Valid
N38798	Piper J-3	Fixed-wing, single engine	Individual owner Kansas	Standard	1964-07-13	Valid
N5155V	Glendening & Kennedy GLEN-LEE II	Fixed-wing, single engine	Individual owner California	Experimental	1961-10-28	Valid
N27452	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Wisconsin	Standard	1958-12-15	Valid
N28595	Luscombe 8B	Fixed-wing, single engine	Individual owner Tennessee	Standard	1940-12-26	Valid
N23803	Taylorcraft BL-65	Fixed-wing, single engine	Direct Fly USA LLC Searcy, Arkansas	Standard		Valid
N25585	Porterfield LP-65	Fixed-wing, single engine	Individual owner New York	Standard		Revoked
N29504	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Wisconsin	Standard		Sale reported
N30899	Piper J3L-65	Fixed-wing, single engine	Individual owner New York	Standard		Pending
N31918	Aeronca 65-LB	Fixed-wing, single engine	Individual owner Arkansas	Standard		Pending
N32366	Porterfield LP-65	Fixed-wing, single engine	Individual owner California	Standard		Valid
N32581	Piper J3L-65	Fixed-wing, single engine	Individual owner Connecticut	Standard		Valid
N32604	Piper J3L-65	Fixed-wing, single engine	Individual owner Florida	Standard		Sale reported
N36168	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Georgia	Standard		Sale reported
N4555H	Piper PA-15	Fixed-wing, single engine	Individual owner Florida	Standard		Valid
N4659H	Piper PA-15	Fixed-wing, single engine	Individual owner Washington	Standard		Sale reported
N741TC	Taylorcraft BL-65	Fixed-wing, single engine	Individual owner Missouri	Standard		Pending

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.