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
N396G Piper
PA-28-181
Fixed-wing, single engine Career Pilot Training LLC
Wilmington, Delaware
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N419G Piper
PA-28-181
Fixed-wing, single engine Career Pilot Training LLC
Wilmington, Delaware
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N409FP Diamond Aircraft
DA40 F
Electric airplane Aamro Aviation CORP
Lake Worth, Florida
Standard 2019-08-15 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N2477S Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Averett University
Danville, Virginia
Standard 2019-08-07 ValidFAA registration status code V: Valid registration. All codes
N94WA Piper
PA-28-181
Fixed-wing, single engine Vidal Aviation LLC
Gaithersburg, Maryland
Standard 2019-07-26 ValidFAA registration status code V: Valid registration. All codes
N84HX Hooper Kenneth R
RV-8
Fixed-wing, single engine Driggers Group INC
Saint Petersburg, Florida
Experimental 2019-07-18 ValidFAA registration status code V: Valid registration. All codes
N6095S Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Ari Ben Aviator INC
Fort Pierce, Florida
Standard 2019-06-20 ValidFAA registration status code V: Valid registration. All codes
N59KB Kent F Bond
MURPHY ELITE
Fixed-wing, single engine Individual owner
Utah
Experimental 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N147G Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N243G Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N271G Piper
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N328G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N334G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N374G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N383G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Aero LLC
Wilmington, Delaware
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N172WN Cessna
172N
Fixed-wing, single engine Legends Air Center LLC
Bentonville, Arkansas
Experimental 2019-03-02 ValidFAA registration status code V: Valid registration. All codes
N24139 Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Averett University
Danville, Virginia
Standard 2019-01-15 ValidFAA registration status code V: Valid registration. All codes
N93MC Mark Craven
VANS RV7
Fixed-wing, single engine Co-owned owner
California
Experimental 2019-01-10 ValidFAA registration status code V: Valid registration. All codes
N939G Piper
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2019-01-08 ValidFAA registration status code V: Valid registration. All codes
N941G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2019-01-08 ValidFAA registration status code V: Valid registration. All codes
N953G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2019-01-08 ValidFAA registration status code V: Valid registration. All codes
N954G Piper
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2019-01-08 ValidFAA registration status code V: Valid registration. All codes
N897G Piper
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-12-20 ValidFAA registration status code V: Valid registration. All codes
N918G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-12-20 ValidFAA registration status code V: Valid registration. All codes
N927G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-12-20 ValidFAA registration status code V: Valid registration. All codes
N931G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-12-20 ValidFAA registration status code V: Valid registration. All codes
N932G Piper
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-12-20 ValidFAA registration status code V: Valid registration. All codes
N935G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-12-20 ValidFAA registration status code V: Valid registration. All codes
N845G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-11-26 ValidFAA registration status code V: Valid registration. All codes
N857G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-11-26 ValidFAA registration status code V: Valid registration. All codes
N875G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-11-26 ValidFAA registration status code V: Valid registration. All codes
N890G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-11-26 ValidFAA registration status code V: Valid registration. All codes
N915G Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Archer Flight LLC
Wilmington, Delaware
Standard 2018-11-26 ValidFAA registration status code V: Valid registration. All codes
N868P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N867P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N863P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-10-18 ValidFAA registration status code V: Valid registration. All codes
N4132D Piper
PA-28-181
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-17 ValidFAA registration status code V: Valid registration. All codes
N861P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-10-15 ValidFAA registration status code V: Valid registration. All codes
N856P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-10-09 ValidFAA registration status code V: Valid registration. All codes
N852P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-09-28 ValidFAA registration status code V: Valid registration. All codes
N851P Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N837P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N838P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N5678N Cessna
F172G
Fixed-wing, single engine Redwood Area Flyers LLC
Springfield, Minnesota
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N278MG Piper
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2018-09-08 ValidFAA registration status code V: Valid registration. All codes
N279MG Piper
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2018-09-08 ValidFAA registration status code V: Valid registration. All codes
N49RL Cessna
172M
Fixed-wing, single engine Martineau Aircraft INC
Butte, Montana
Standard 2018-08-30 ValidFAA registration status code V: Valid registration. All codes
N870AM Piper
PA-28-181
Fixed-wing, single engine Mojo Medical LLC
Webb City, Missouri
Standard 2018-07-25 ValidFAA registration status code V: Valid registration. All codes
N424MR Clarence Michael Osborne
MC SPECIAL
Fixed-wing, single engine Individual owner
Mississippi
Experimental 2018-06-26 ValidFAA registration status code V: Valid registration. All codes
N7447N Cessna
F172G
Fixed-wing, single engine Jc Flight INC
Wilmington, Delaware
Standard 2018-05-21 ValidFAA registration status code V: Valid registration. All codes
N745PA Piper
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
St George, Utah
Standard 2018-05-10 ValidFAA registration status code V: Valid registration. All codes
N746PA Piper
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
St George, Utah
Standard 2018-05-10 ValidFAA registration status code V: Valid registration. All codes
N742PA Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
St George, Utah
Standard 2018-04-20 ValidFAA registration status code V: Valid registration. All codes
N743PA Piper
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
St George, Utah
Standard 2018-04-20 ValidFAA registration status code V: Valid registration. All codes
N744PA Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
Saint George, Utah
Standard 2018-04-20 ValidFAA registration status code V: Valid registration. All codes
N563K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2018-01-11 ValidFAA registration status code V: Valid registration. All codes
N576K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2018-01-11 ValidFAA registration status code V: Valid registration. All codes
N587K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N592K Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N581K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N586K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N572K Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-09-22 ValidFAA registration status code V: Valid registration. All codes
N578K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-09-22 ValidFAA registration status code V: Valid registration. All codes
N545MA Piper
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
St George, Utah
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N566K Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-08-08 ValidFAA registration status code V: Valid registration. All codes
N568K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N722AK Piper
PA-28-181
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N558K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N564K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N6884J Piper
PA-28-181
Fixed-wing, single engine Hbk Flyers LLC
Alton, Illinois
Standard 2017-05-19 ValidFAA registration status code V: Valid registration. All codes
N2885D Piper
PA-28-181
Fixed-wing, single engine Lehigh Valley Flying Club INC
Lehigh Valley, Pennsylvania
Standard 2017-04-03 ValidFAA registration status code V: Valid registration. All codes
N748AK Andres U Katz
VANS RV-8
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-04-03 ValidFAA registration status code V: Valid registration. All codes
N297MG Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N298MG Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Georgia Aviation Authority
Eastman, Georgia
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N547K Piper
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-02-15 ValidFAA registration status code V: Valid registration. All codes
N542K Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Atp Aircraft 3 LLC
Wilmington, Delaware
Standard 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N4262 Piper
PA-28-181
Fixed-wing, single engine Regal Dent INC
Goshen, New York
Standard 2017-01-26 ValidFAA registration status code V: Valid registration. All codes
N312FM Argetsinger Dennis P
VANS RV-8
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N394D Piper
PA-28-181
Fixed-wing, single engine National Training 1 LLC
Wilmington, Delaware
Standard 2016-12-22 ValidFAA registration status code V: Valid registration. All codes
N395D Piper
PA-28-181
Fixed-wing, single engine National Training 1 LLC
Wilmington, Delaware
Standard 2016-12-22 ValidFAA registration status code V: Valid registration. All codes
N4128T Piper
PA-28-181
Fixed-wing, single engine Individual owner
New York
Standard 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N6912J Piper
PA-28-181
Fixed-wing, single engine Individual owner
Oregon
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N386D Piper
PA-28-181
Fixed-wing, single engine National Training 1 LLC
Wilmington, Delaware
Standard 2016-11-22 ValidFAA registration status code V: Valid registration. All codes
N391D Piper
PA-28-181
Fixed-wing, single engine National Training 1 LLC
Wilmington, Delaware
Standard 2016-11-22 ValidFAA registration status code V: Valid registration. All codes
N392D Piper
PA-28-181
Fixed-wing, single engine National Training 1 LLC
Wilmington, Delaware
Standard 2016-10-31 ValidFAA registration status code V: Valid registration. All codes
N393D Piper
PA-28-181
Fixed-wing, single engine National Training 1 LLC
Wilmington, Delaware
Standard 2016-10-31 ValidFAA registration status code V: Valid registration. All codes
N620AC Piper
PA-28-181
Fixed-wing, single engine Ari Ben Aviator INC
Fort Pierce, Florida
Standard 2016-10-20 ValidFAA registration status code V: Valid registration. All codes
N384D Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-10-13 ValidFAA registration status code V: Valid registration. All codes
N385D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-10-13 ValidFAA registration status code V: Valid registration. All codes
N53447 Piper
PA-28-181
Fixed-wing, single engine Bank of Utah Trustee
Salt Lake City, Utah
Special flight permit 2016-10-13 ValidFAA registration status code V: Valid registration. All codes
N381D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-09-30 ValidFAA registration status code V: Valid registration. All codes
N382D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-09-30 ValidFAA registration status code V: Valid registration. All codes
N355D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-09-26 ValidFAA registration status code V: Valid registration. All codes
N349D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-09-14 ValidFAA registration status code V: Valid registration. All codes
N348D Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-09-08 ValidFAA registration status code V: Valid registration. All codes
N4400P Piper Aircraft Inc
PA-28-181
Fixed-wing, single engine Cae Oxford Aviation Academy Phoenix INC
Mesa, Arizona
Standard 2016-09-07 ValidFAA registration status code V: Valid registration. All codes
N347D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-08-29 ValidFAA registration status code V: Valid registration. All codes
N428PB William L Vander Molen
WAG-AERO 2+2
Fixed-wing, single engine Individual owner
Michigan
Experimental 2016-08-19 ValidFAA registration status code V: Valid registration. All codes
N346D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-07-18 ValidFAA registration status code V: Valid registration. All codes
N344D Piper
PA-28-181
Fixed-wing, single engine Professional Training Aircraft LLC
Wilmington, Delaware
Standard 2016-07-11 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.