The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming O-360-A4M

418 aircraft on the U.S. register carry a Lycoming O-360-A4M engine, rated at about 180 horsepower. The Piper PA-28 Cherokee, Warrior, Archer and Arrow is the model most often fitted with it (340 aircraft). The aircraft carrying it were built between 1966 and 2022.

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-360-A4M. FAA spelling: O-360-A4M.

Fitted to model families

Piper PA-28 Cherokee, Warrior, Archer and Arrow340Cessna 172 Skyhawk23Diamond Aircraft DA 40 Diamond Star12Cessna F172G2Piper PA-18 Super Cub2Ahlgren Jon E AVID MAGNUM1Andres U Katz VANS RV-81Argetsinger Dennis P VANS RV-81Clarence Michael Osborne MC SPECIAL1David Magaw RV-41Eaker Raymond L RV-7A1Floyd G Halderman Jr VANS RV6A1

Piper PA-28 Cherokee, Warrior, Archer and Arrow · Cessna 172 Skyhawk · Diamond Aircraft DA 40 Diamond Star · Cessna F172G · Piper PA-18 Super Cub · Ahlgren Jon E AVID MAGNUM · Andres U Katz VANS RV-8 · Argetsinger Dennis P VANS RV-8 · Clarence Michael Osborne MC SPECIAL · David Magaw RV-4

Where they are owner's state

Delaware178Florida33Utah30Georgia29Arizona29Texas15California13Minnesota11Pennsylvania5Nevada5

Kind of aircraft

Piston singles418 (100%)

When the aircraft were built by decade

0601201802402195031960341970519801419905320002402010602020

What the FAA has certified, ordered and been told about the Lycoming O-360-A4M the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 559 failure reports with the FAA since 1995, 149 of them in the last ten years.

Failure reports 559 since · what operators and shops told the FAA

01836547295000510152025226

Parts most often reported as the reports name them

Bracket47Cylinder Head37Carburetor33Impulse Coupling28Cylinder27Tube24Oil Cooler21Channel17Magneto17Pump13

Latest reports

2026-07-02Carburetor: faulted
2026-03-20Impulse Coupling: defective
2025-09-09Cylinder Head: cracked
2025-04-08Retaining Ring: defective
2024-11-15Carburetor: faulted

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
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/lycoming-o-360-a4m.json · about the eFlight graph.

Aircraft newest certificates first · 418

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N323D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-06-03 ValidFAA registration status code V: Valid registration. All codes
N287D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-04-28 ValidFAA registration status code V: Valid registration. All codes
N236D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-04-22 ValidFAA registration status code V: Valid registration. All codes
N264D Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-04-22 ValidFAA registration status code V: Valid registration. All codes
N952A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-03-24 ValidFAA registration status code V: Valid registration. All codes
N991A Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-03-24 ValidFAA registration status code V: Valid registration. All codes
N979A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-03-10 ValidFAA registration status code V: Valid registration. All codes
N980A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-03-10 ValidFAA registration status code V: Valid registration. All codes
N908A Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-02-26 ValidFAA registration status code V: Valid registration. All codes
N929A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-02-26 ValidFAA registration status code V: Valid registration. All codes
N620A Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-02-18 ValidFAA registration status code V: Valid registration. All codes
N901A Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-02-18 ValidFAA registration status code V: Valid registration. All codes
N290MG Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2015-02-06 ValidFAA registration status code V: Valid registration. All codes
N291MG Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2015-02-06 ValidFAA registration status code V: Valid registration. All codes
N292MG Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2015-02-06 ValidFAA registration status code V: Valid registration. All codes
N449A Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-02-03 ValidFAA registration status code V: Valid registration. All codes
N458A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2015-02-03 ValidFAA registration status code V: Valid registration. All codes
N793A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2015-01-22 ValidFAA registration status code V: Valid registration. All codes
N794A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2015-01-22 ValidFAA registration status code V: Valid registration. All codes
N769A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2015-01-13 ValidFAA registration status code V: Valid registration. All codes
N792A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2015-01-13 ValidFAA registration status code V: Valid registration. All codes
N730A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2014-12-29 ValidFAA registration status code V: Valid registration. All codes
N768A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2014-12-29 ValidFAA registration status code V: Valid registration. All codes
N724A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2014-12-08 ValidFAA registration status code V: Valid registration. All codes
N728A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2014-12-08 ValidFAA registration status code V: Valid registration. All codes
N261A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2014-11-24 ValidFAA registration status code V: Valid registration. All codes
N219A Piper
PA-28-181
Fixed-wing, single engine Meridian Aircraft LLC
Wilmington, Delaware
Standard 2014-11-05 ValidFAA registration status code V: Valid registration. All codes
N28AU Piper
PA-28-181
Fixed-wing, single engine Andrews University
Berrien Springs, Michigan
Standard 2014-10-27 ValidFAA registration status code V: Valid registration. All codes
N695A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-10-01 ValidFAA registration status code V: Valid registration. All codes
N696A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-10-01 ValidFAA registration status code V: Valid registration. All codes
N676A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-09-15 ValidFAA registration status code V: Valid registration. All codes
N684A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-09-15 ValidFAA registration status code V: Valid registration. All codes
N27AU Piper
PA-28-181
Fixed-wing, single engine Andrews University
Berrien Springs, Michigan
Standard 2014-09-03 ValidFAA registration status code V: Valid registration. All codes
N662A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-08-25 ValidFAA registration status code V: Valid registration. All codes
N674A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-08-25 ValidFAA registration status code V: Valid registration. All codes
N517BW Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Individual owner
California
Standard 2014-08-13 ValidFAA registration status code V: Valid registration. All codes
N658A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-07-30 ValidFAA registration status code V: Valid registration. All codes
N659A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-07-30 ValidFAA registration status code V: Valid registration. All codes
N603A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-07-15 ValidFAA registration status code V: Valid registration. All codes
N598A Piper
PA-28-181
Fixed-wing, single engine Piper Archer Three LLC
Wilmington, Delaware
Standard 2014-07-02 ValidFAA registration status code V: Valid registration. All codes
N589A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N710A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N560A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N563A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N643FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N644FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N645FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N646FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N647FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N648FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N649FT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N650FT Piper
PA-28-181
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N537A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N542A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N504A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-04-01 ValidFAA registration status code V: Valid registration. All codes
N514A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-04-01 ValidFAA registration status code V: Valid registration. All codes
N517A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-03-18 ValidFAA registration status code V: Valid registration. All codes
N534A Piper
PA-28-181
Fixed-wing, single engine Pa28 Aircraft LLC
Wilmington, Delaware
Standard 2014-03-18 ValidFAA registration status code V: Valid registration. All codes
N482A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-02-03 ValidFAA registration status code V: Valid registration. All codes
N485A Piper
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-02-03 ValidFAA registration status code V: Valid registration. All codes
N487A Piper
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-02-03 ValidFAA registration status code V: Valid registration. All codes
N280HG Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2014-01-30 ValidFAA registration status code V: Valid registration. All codes
N5813V Piper
PA-28-181
Fixed-wing, single engine Individual owner
Virginia
Standard 2014-01-30 ValidFAA registration status code V: Valid registration. All codes
N478A Piper
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-01-22 ValidFAA registration status code V: Valid registration. All codes
N481A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-01-22 ValidFAA registration status code V: Valid registration. All codes
N471A Piper
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-01-16 ValidFAA registration status code V: Valid registration. All codes
N473A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2014-01-16 ValidFAA registration status code V: Valid registration. All codes
N360AM Ahlgren Jon E
AVID MAGNUM
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2014-01-13 ValidFAA registration status code V: Valid registration. All codes
N713SQ Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Transportation Solutions & Logistics INC
Orlando, Florida
Standard 2014-01-03 ValidFAA registration status code V: Valid registration. All codes
N467A New Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-27 ValidFAA registration status code V: Valid registration. All codes
N470A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-27 ValidFAA registration status code V: Valid registration. All codes
N402A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-10 ValidFAA registration status code V: Valid registration. All codes
N405A Piper
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-10 ValidFAA registration status code V: Valid registration. All codes
N406A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-10 ValidFAA registration status code V: Valid registration. All codes
N412A Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-10 ValidFAA registration status code V: Valid registration. All codes
N616AD Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aircraft LLC
Wilmington, Delaware
Standard 2013-12-10 ValidFAA registration status code V: Valid registration. All codes
N158PM Cessna
172L
Fixed-wing, single engine Individual owner
Indiana
Standard 2013-09-17 ValidFAA registration status code V: Valid registration. All codes
N342TA Piper
PA-28-181
Fixed-wing, single engine United States Air Force 60 Fss/Fsca
Rio Vista, California
Standard 2013-07-30 ValidFAA registration status code V: Valid registration. All codes
N168F New Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Reading Aero Club INC
Reading, Pennsylvania
Standard 2013-07-12 ValidFAA registration status code V: Valid registration. All codes
N676MM New Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Individual owner
North Dakota
Standard 2012-08-07 ValidFAA registration status code V: Valid registration. All codes
N802DD Cessna
172N
Fixed-wing, single engine N802Dd CORP Trustee
Wilmington, Delaware
Standard 2012-04-26 ValidFAA registration status code V: Valid registration. All codes
N426SL Jorgensen Lynn L
ACRO SPORT II
Fixed-wing, single engine Co-owned owner
Iowa
Experimental 2012-04-11 ValidFAA registration status code V: Valid registration. All codes
N1071C Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Bmk Aviation LLC
Northampton, Pennsylvania
Standard 2012-02-21 ValidFAA registration status code V: Valid registration. All codes
N486MA New Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Orange Wing Aviation INC
Wilmington, Delaware
Standard 2010-08-16 ValidFAA registration status code V: Valid registration. All codes
N8288A Piper
PA-28-181
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2009-10-01 ValidFAA registration status code V: Valid registration. All codes
N9825W Juergens Gary W
COZY MK-IV
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2009-08-21 ValidFAA registration status code V: Valid registration. All codes
N568RV Neumayer Ba/Cheesman Wc
RV-8
Fixed-wing, single engine Co-owned owner
California
Experimental 2009-02-10 ValidFAA registration status code V: Valid registration. All codes
N634TW Voskamp
GLASTAR GS1
Fixed-wing, single engine Individual owner
Florida
Experimental 2009-01-16 ValidFAA registration status code V: Valid registration. All codes
N1075R Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2008-09-02 ValidFAA registration status code V: Valid registration. All codes
N718KT Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2008-08-06 ValidFAA registration status code V: Valid registration. All codes
N16KJ Jones Kevin M
RV-6
Fixed-wing, single engine Individual owner
Georgia
Experimental 2008-02-22 ValidFAA registration status code V: Valid registration. All codes
N819PR Tate David P
KIS CRUISER TR-4
Fixed-wing, single engine Individual owner
Florida
Experimental 2007-10-02 ValidFAA registration status code V: Valid registration. All codes
N8094D Piper
PA-18A 150
Fixed-wing, single engine High Exposure INC
Wilmington, Delaware
Restricted 2007-09-19 ValidFAA registration status code V: Valid registration. All codes
N3121V New Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Cochise Community College
Douglas, Arizona
Standard 2007-08-14 ValidFAA registration status code V: Valid registration. All codes
N99465 Cessna
172P
Fixed-wing, single engine Individual owner
Connecticut
Standard 2007-07-28 ValidFAA registration status code V: Valid registration. All codes
N1461U Cessna
172M
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2007-04-18 ValidFAA registration status code V: Valid registration. All codes
N343TA Piper
PA-28-181
Fixed-wing, single engine US Air Force
Rio Vista, California
Standard 2007-01-03 ValidFAA registration status code V: Valid registration. All codes
N341TA New Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine United States of America
Travis Afb, California
Standard 2006-10-27 ValidFAA registration status code V: Valid registration. All codes
N20481 Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2006-09-08 ValidFAA registration status code V: Valid registration. All codes
N383PS Diamond Aircraft
DA40 F
Electric airplane Utah State University
Logan, Utah
Standard 2006-07-17 ValidFAA registration status code V: Valid registration. All codes
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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.