The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 2026

Lycoming O-320 series

27,315 aircraft on the U.S. register carry a Lycoming O-320 series engine, rated at about 180 horsepower. The Cessna 172 Skyhawk is the model most often fitted with it (9,462 aircraft). The aircraft carrying it were built between 1949 and 2026.

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-320 series (2 codes). FAA spellings: 0-320 SERIES · O-320 SERIES.

Fitted to model families

Cessna 172 Skyhawk9,462Piper PA-28 Cherokee, Warrior, Archer and Arrow6,844Piper PA-18 Super Cub2,393Piper PA-22 Tri-Pacer and Colt1,660Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger566Bellanca 7 Citabria563Cessna 177 Cardinal398Piper PA-23 Apache and Aztec347Robinson R22276Champion 7 Citabria and Champ266American Champion Aircraft 7 Citabria and Champ249Piper PA-12 Super Cruiser149

Cessna 172 Skyhawk · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Piper PA-18 Super Cub · Piper PA-22 Tri-Pacer and Colt · Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger · Bellanca 7 Citabria · Cessna 177 Cardinal · Piper PA-23 Apache and Aztec · Robinson R22 · Champion 7 Citabria and Champ

Where they are owner's state

Texas2,350California2,123Florida2,076Alaska1,796Washington1,004Ohio731Georgia718Minnesota686North Carolina674Arizona659

Kind of aircraft

Piston singles26,597 (97%)Piston twins414 (2%)Helicopters303 (1%)Gliders1 (0.0%)

When the aircraft were built by decade

02,8515,7028,55411,405193019401950196019701980199020002010552020

What the FAA has certified, ordered and been told about the Lycoming O-320 series the component layer

The design is held under 1 type certificate (E-274, held by Lycoming Engines). The FAA has issued 29 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 349 failure reports with the FAA since 1995, 19 of them in the last ten years.

FAA orders 29 airworthiness directives · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2012-03-272012-03-07 · Carburetor · engine
2008-10-202008-19-05 · Parallel Valve'' reciprocating engines · engine
2006-01-312005-26-10 · ECi cylinder assemblies. · engine

All orders naming the Lycoming O-320 series

Failure reports 349 since · what operators and shops told the FAA

010203141950106111621426

Parts most often reported as the reports name them

Spar18Tube17Cylinder15Bulkhead9Alternator8Control Cable8Bolt7Carburetor7Fitting6Float6

Latest reports

2026-09-03Gascolator: dirty
2026-05-19Impulse Coupling: unserviceable
2026-03-10Cylinder Head: cracked
2026-03-05Cylinder: cracked
2025-11-24Cylinder: cracked

Certificates and bulletins

E-274Type certificate held by Lycoming Engines · 60 models listed · revised April 30, 2013

Safety bulletins 17 · advice, not orders

2022-09-26NE-06-31R6 · Engine Lubricating Oils
2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders
2016-05-13NE-08-32R1 · Propeller Governor Idler Gear Shaft Set Screw
2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs
2012-11-21NE-13-06 · Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320,...

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-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N9534D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N12661 Cessna
172M
Fixed-wing, single engine Jb Aviation Flight School INC
Wonder Lake, Illinois
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N2351L Beech
23
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N292AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N437KF Files Kenneth L
RV6-A
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N545FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N640MG Cessna
172M
Fixed-wing, single engine Aviate LLC
Green Bay, Wisconsin
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N739DE Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N8073N Piper
PA-28-140
Fixed-wing, single engine Kiwi Choppers LLC
Hillsboro, Oregon
Standard 2025-10-23 ValidFAA registration status code V: Valid registration. All codes
N1703J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N206SC D Cybulski
MURPHY REBEL
Fixed-wing, single engine Splashin LLC
White Lake, Michigan
Experimental 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N228CJ Cessna
172N
Fixed-wing, single engine Splashin LLC
White Lake, Michigan
Standard 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N2640P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N38AR White Ronald E
LONG EZE
Fixed-wing, single engine Co-owned owner
Missouri
Experimental 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N6025W Piper
PA-28-140
Fixed-wing, single engine Socal Flights LLC
Simi Valley, California
Standard 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N625DM American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-10-22 ValidFAA registration status code V: Valid registration. All codes
N5094R Cessna
172M
Fixed-wing, single engine High View Air LLC
Driftwood, Texas
Standard 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N520X Piper
PA-28-161
Fixed-wing, single engine Swaz Aviation LLC
Mesa, Arizona
Standard 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N64023 Cessna
172M
Fixed-wing, single engine Rawson Aviation LLC
Collinsville, Oklahoma
Standard 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N7240J Piper
PA-28-140
Fixed-wing, single engine Flytt LLC
Naples, Florida
Standard 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N800LM Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N822RV Conyers Stephen D
VAN'S RV-3A
Fixed-wing, single engine Individual owner
Alabama
Experimental 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N9718U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Washington
Standard 2025-10-21 ValidFAA registration status code V: Valid registration. All codes
N130SR Wood Steven O
VANS RV 4
Fixed-wing, single engine Limitless Aviation and Adventures LLC
Tomball, Texas
Experimental 2025-10-20 ValidFAA registration status code V: Valid registration. All codes
N1765J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-10-20 ValidFAA registration status code V: Valid registration. All codes
N5949D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2025-10-20 ValidFAA registration status code V: Valid registration. All codes
N675RF Rodney F Foutch
VANS RV6-A
Fixed-wing, single engine Individual owner
Virginia
Experimental 2025-10-20 ValidFAA registration status code V: Valid registration. All codes
N7898G Cessna
172L
Fixed-wing, single engine Co-owned owner
Alabama
Multiple 2025-10-20 ValidFAA registration status code V: Valid registration. All codes
N98055 Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2025-10-20 ValidFAA registration status code V: Valid registration. All codes
N929CE Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Restricted 2025-10-19 ValidFAA registration status code V: Valid registration. All codes
N2150S Morrisey
2150A
Fixed-wing, single engine N2150S LLC
Charlotte, North Carolina
Standard 2025-10-18 ValidFAA registration status code V: Valid registration. All codes
N2485X Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
California
Standard 2025-10-18 ValidFAA registration status code V: Valid registration. All codes
N9155D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-10-18 ValidFAA registration status code V: Valid registration. All codes
N13276 Cessna
172M
Fixed-wing, single engine N13276 LLC
Myrtle Beach, South Carolina
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N21374 Cessna
172M
Fixed-wing, single engine Stratus Aviation LLC DBA
Vacaville, California
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N4288Q Cessna
172L
Fixed-wing, single engine N4288Q LLC
Myrtle Beach, South Carolina
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N44575 Piper
PA-28-140
Fixed-wing, single engine Fit Overflow LLC
Davidson, North Carolina
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N5191J Cessna
172N
Fixed-wing, single engine N5191J LLC
Myrtle Beach, South Carolina
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N5782J Cessna
172N
Fixed-wing, single engine N5782J LLC
Myrtle Beach, South Carolina
Restricted 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N7206Q Cessna
172L
Fixed-wing, single engine N7206Q LLC
Myrtle Beach, South Carolina
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N724TX Cessna
172M
Fixed-wing, single engine Stratus Aviation LLC DBA
Vacaville, California
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N80168 Cessna
172M
Fixed-wing, single engine Stratus Aviation LLC DBA
Vacaville, California
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N8269E Cessna
172N
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N9013D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Maryland
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N9252H Cessna
172M
Fixed-wing, single engine Stratus Aviation LLC DBA
Vacaville, California
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N9839K Piper
PA-28-161
Fixed-wing, single engine P P I Consulting LLC
Gladstone, Oregon
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N9904V Cessna
172M
Fixed-wing, single engine Stratus Aviation LLC DBA
Vacaville, California
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N9964W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2025-10-17 ValidFAA registration status code V: Valid registration. All codes
N20353 Cessna
172M
Fixed-wing, single engine Aspen Aviation LLC
Ashland, Ohio
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N36626 Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N4107P Piper
PA-23-160
Fixed-wing, multi-engine Tm Aero Marine INC
North Miami, Florida
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N4377Q Cessna
172L
Fixed-wing, single engine Individual owner
Maine
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N5136E Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N7382J Piper
PA-28-140
Fixed-wing, single engine Minor Air LLC
Joplin, Missouri
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N83452 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2025-10-16 ValidFAA registration status code V: Valid registration. All codes
N141ER Socata
TB 9 TAMPICO
Fixed-wing, single engine Stein Richard M
Sierra Vista, Arizona
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N2117E Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N31563 Piper
PA-28-161
Fixed-wing, single engine Hfd Aviation LLC
Salem, Virginia
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N5449L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Skycat Aviation LLC
Asheville, North Carolina
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N55680 Piper
PA-28-140
Fixed-wing, single engine Madsen Pest Management LLC
Siren, Wisconsin
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N626YC Jenkins
STARDUSTER TOO
Fixed-wing, single engine Individual owner
Connecticut
Experimental 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N6941J Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N73401 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N9160D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N9516K Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Delaware
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N9666V Cessna
172M
Fixed-wing, single engine Media Stew LLC
Carson City, Nevada
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N9977C Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-10-15 ValidFAA registration status code V: Valid registration. All codes
N1126S Lombard Clinton P
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N2874Z Piper
PA-28-161
Fixed-wing, single engine Advanced Aviation Concepts LLC
Gainesville, Florida
Standard 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N3777P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N7444R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N772KM Armin D Tuma
GLASTAR
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N9904Q Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N106KS Stark Kenneth A
VANS RV-6
Fixed-wing, single engine Docal Light Industries Llcname
Redwood City, California
Experimental 2025-10-13 ValidFAA registration status code V: Valid registration. All codes
N2911X Cessna
177
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-10-13 ValidFAA registration status code V: Valid registration. All codes
N3336M Piper
PA-12
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-10-13 ValidFAA registration status code V: Valid registration. All codes
N60WR Rutherford William
RV-6
Fixed-wing, single engine Ambush One LLC
Memphis, Tennessee
Experimental 2025-10-13 ValidFAA registration status code V: Valid registration. All codes
N7513R Piper
PA-28-140
Fixed-wing, single engine Anderson Agency INC
Racine, Ohio
Standard 2025-10-13 ValidFAA registration status code V: Valid registration. All codes
N9925W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2025-10-13 ValidFAA registration status code V: Valid registration. All codes
N7299Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2025-10-11 ValidFAA registration status code V: Valid registration. All codes
N1724J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N2072Y Conover Dale L
TUNDRA PUP
Fixed-wing, single engine Individual owner
Alaska
Experimental 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N32825 Piper
PA-28-140
Fixed-wing, single engine Manning John e JR
Sylacauga, Alabama
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N348JW Watjen John W
VANS RV-8
Fixed-wing, single engine Hupp Patrick
Gladstone, Missouri
Experimental 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N6031D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Florida
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N6121W Piper
PA-28-140
Fixed-wing, single engine Radius Aviation LLC
Fort Rucker, Alabama
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N734CC Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N734CJ Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N734WS Cessna
172N
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N9899Q Cessna
172M
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N99PJ Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-10-10 ValidFAA registration status code V: Valid registration. All codes
N15435 Piper
PA-28-140
Fixed-wing, single engine Crown Aviation LLC
Haltom City, Texas
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N2515Z Bellanca
7GCAA
Fixed-wing, single engine Individual owner
California
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N4454J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N4501E Cessna
172N
Fixed-wing, single engine Optima Aviation LLC DBA
Lewisville, Texas
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N507GL Great Lakes
2T-1A-1
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N6974W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N79540 Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N888CM Cessna
172M
Fixed-wing, single engine Kelley Aircraft LLC
Weyers Cave, Virginia
Standard 2025-10-09 ValidFAA registration status code V: Valid registration. All codes
N2245L Beech
B19
Fixed-wing, single engine Individual owner
Missouri
Standard 2025-10-08 ValidFAA registration status code V: Valid registration. All codes
Previous Page 19 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.