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

Lycoming O-320 series

27,316 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 (9,463 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 Skyhawk9,463Piper 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

Texas2,349California2,123Florida2,075Alaska1,796Washington1,004Ohio731Georgia718Minnesota686North Carolina674Arizona659

Kind of aircraft

Piston singles26,598 (97%)Piston twins414 (2%)Helicopters303 (1%)Gliders1 (0.0%)

When the aircraft were built by decade

02,8525,7038,55411,406193019401950196019701980199020002010552020

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 · 27,316

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N3980Q Cessna
172L
Fixed-wing, single engine Lanning 1 Aviation LLC
Amarillo, Texas
Standard 2026-05-23 ValidFAA registration status code V: Valid registration. All codes
N43201 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2026-05-23 ValidFAA registration status code V: Valid registration. All codes
N4431A Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2026-05-23 ValidFAA registration status code V: Valid registration. All codes
N5421K Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2026-05-23 ValidFAA registration status code V: Valid registration. All codes
N6727W Piper
PA-28-140
Fixed-wing, single engine Cherokee Aviation LLC
Kalispell, Montana
Standard 2026-05-23 ValidFAA registration status code V: Valid registration. All codes
N98380 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2026-05-23 ValidFAA registration status code V: Valid registration. All codes
N134NM Mcneill Neill A
RV-9
Fixed-wing, single engine Individual owner
Georgia
Experimental 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N15SW Cessna
172I
Fixed-wing, single engine Individual owner
Virginia
Standard 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N2656T Piper
PA-28-140
Fixed-wing, single engine Cardinal Point Aviation Services LLC
Homestead, Florida
Standard 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N738EH Cessna
172N
Fixed-wing, single engine Hills Holding
Newark, Delaware
Standard 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N906PS Piper
PA-28-160
Fixed-wing, single engine Gravitas Services LLC
Richmond Hill, Georgia
Standard 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N98851 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N9981U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Expedition Air LLC
Antioch, California
Standard 2026-05-22 ValidFAA registration status code V: Valid registration. All codes
N2327P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-21 ValidFAA registration status code V: Valid registration. All codes
N7066B Piper
PA-18-150
Fixed-wing, single engine Wateractive43 LLC
Auburn, California
Multiple 2026-05-21 ValidFAA registration status code V: Valid registration. All codes
N73786 Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2026-05-21 ValidFAA registration status code V: Valid registration. All codes
N738GB Cessna
172N
Fixed-wing, single engine Flying Grass Hopper LLC
Barrington, Illinois
Standard 2026-05-21 ValidFAA registration status code V: Valid registration. All codes
N838MP Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2026-05-21 ValidFAA registration status code V: Valid registration. All codes
N8664 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Tennessee
Standard 2026-05-20 ValidFAA registration status code V: Valid registration. All codes
N101EB Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2026-05-19 ValidFAA registration status code V: Valid registration. All codes
N121ES Piper
PA-28-140
Fixed-wing, single engine Well Bilt Industries USA LLC
Ocala, Florida
Standard 2026-05-19 ValidFAA registration status code V: Valid registration. All codes
N3187P Piper
PA-23
Fixed-wing, multi-engine Air Over Ground LLC
Helena, Montana
Standard 2026-05-19 ValidFAA registration status code V: Valid registration. All codes
N6165W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-19 ValidFAA registration status code V: Valid registration. All codes
N13147 Cessna
172M
Fixed-wing, single engine Terra Piniun LLC
Chickaloon, Alaska
Standard 2026-05-18 ValidFAA registration status code V: Valid registration. All codes
N1090F Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N137K Kaiser Ivan I
GLASTAR
Fixed-wing, single engine Stone Fish Aviation LLC
Fernandina Beach, Florida
Experimental 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N24029 Beech
B19
Fixed-wing, single engine Co-owned owner
Texas
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N3134P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Iowa
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N5251R Cessna
172M
Fixed-wing, single engine Long Island Aviators LLC
Seaford, New York
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N75039 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N9498L American
AA-5
Fixed-wing, single engine Individual owner
Maryland
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N9748Q Beech
B19
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2026-05-16 ValidFAA registration status code V: Valid registration. All codes
N151ND Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
Tennessee
Standard 2026-05-15 ValidFAA registration status code V: Valid registration. All codes
N35628 Cessna
172I
Fixed-wing, single engine Plane Junkies LLC
Dover, Delaware
Standard 2026-05-14 ValidFAA registration status code V: Valid registration. All codes
N4010B Robinson Helicopter
R22 MARINER
Helicopter Emerald City Aircraft Leasing INC
Port Orchard, Washington
Multiple 2026-05-14 ValidFAA registration status code V: Valid registration. All codes
N6282D Cessna
172N
Fixed-wing, single engine Plane Junkies LLC
Dover, Delaware
Standard 2026-05-14 ValidFAA registration status code V: Valid registration. All codes
N6580W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2026-05-14 ValidFAA registration status code V: Valid registration. All codes
N8594C Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2026-05-14 ValidFAA registration status code V: Valid registration. All codes
N102PR Cessna
172M
Fixed-wing, single engine Rico Aviation Services INC
Miami, Florida
Special flight permit 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N12833 Cessna
172M
Fixed-wing, single engine Kling Aviation INC
Friendswood, Texas
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N2320E Cessna
172N
Fixed-wing, single engine Sky Farmer LLC
Culleoka, Tennessee
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N524KW Warr Gregory D
RV-4
Fixed-wing, single engine Individual owner
Illinois
Experimental 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N5349D Cessna
172N
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N5685S Beech
A23-19
Fixed-wing, single engine Individual owner
Washington
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N7433G Cessna
172K
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N8762E Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N9820W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-13 ValidFAA registration status code V: Valid registration. All codes
N3510Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2026-05-12 ValidFAA registration status code V: Valid registration. All codes
N3580K Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2026-05-12 ValidFAA registration status code V: Valid registration. All codes
N75095 Piper
PA-28-151
Fixed-wing, single engine Individual owner
North Carolina
Standard 2026-05-12 ValidFAA registration status code V: Valid registration. All codes
N9713D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Arkansas
Standard 2026-05-12 ValidFAA registration status code V: Valid registration. All codes
N99JM Piper
PA-28-140
Fixed-wing, single engine Rebellion Point Aviation LLC
Elizabeth City, North Carolina
Standard 2026-05-12 ValidFAA registration status code V: Valid registration. All codes
N47675 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2026-05-11 ValidFAA registration status code V: Valid registration. All codes
N611AL Johnson Larry W
STD HMLTN GLASTAR
Fixed-wing, single engine Maverick Management Montana LLC
Yarmouth Port, Massachusetts
Experimental 2026-05-11 ValidFAA registration status code V: Valid registration. All codes
N2377E Cessna
172N
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2026-05-10 ValidFAA registration status code V: Valid registration. All codes
N5277W Piper
PA-28
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2026-05-10 ValidFAA registration status code V: Valid registration. All codes
N7293L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Heilade204 LLC
Jupiter, Florida
Standard 2026-05-10 ValidFAA registration status code V: Valid registration. All codes
N1427X Piper
PA-28-151
Fixed-wing, single engine Alis Aquilae LLC
Opelika, Alabama
Standard 2026-05-09 ValidFAA registration status code V: Valid registration. All codes
N3959K Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2026-05-09 ValidFAA registration status code V: Valid registration. All codes
N44318 Piper
PA-28-151
Fixed-wing, single engine Trinity Air Service INC
Klamath Falls, Oregon
Standard 2026-05-09 ValidFAA registration status code V: Valid registration. All codes
N4474Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Nevada
Standard 2026-05-09 ValidFAA registration status code V: Valid registration. All codes
N696DB Blessing
RV-3A
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2026-05-09 ValidFAA registration status code V: Valid registration. All codes
N7178K Piper
PA-18-125
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-09 ValidFAA registration status code V: Valid registration. All codes
N13639 Cessna
172M
Fixed-wing, single engine Bishop Services LLC
Ellisville, Mississippi
Standard 2026-05-08 ValidFAA registration status code V: Valid registration. All codes
N2405H Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-08 ValidFAA registration status code V: Valid registration. All codes
N8296J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Varga Aircraft CO
Hephzibah, Georgia
Standard 2026-05-08 ValidFAA registration status code V: Valid registration. All codes
N82VW Johnson Wayne
VANS RV6A
Fixed-wing, single engine Individual owner
Kansas
Experimental 2026-05-08 ValidFAA registration status code V: Valid registration. All codes
N9406D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Idaho
Standard 2026-05-08 ValidFAA registration status code V: Valid registration. All codes
N235RC Creed Raymond Frank
LANCAIR 235
Fixed-wing, single engine Individual owner
Illinois
Experimental 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N26CW Cessna
172N
Fixed-wing, single engine Individual owner
Colorado
Standard 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N3049P Piper
PA-23
Fixed-wing, multi-engine Taildragger Aero LLC
Saint John, Washington
Standard 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N79877 Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N8318H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N8554D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N9707W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2026-05-06 ValidFAA registration status code V: Valid registration. All codes
N1716J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N28199 Socata
TAMPICO TB 9C
Fixed-wing, single engine Guppy Aviation LLC
New Smyrna Beach, Florida
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N29343 Cessna
177
Fixed-wing, single engine Aeromech Incorporated
Mukilteo, Washington
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N29409 Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N3071G Champion
7GCBC
Fixed-wing, single engine Individual owner
South Dakota
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N533SJ Cessna
172N
Fixed-wing, single engine Lns LLC
Wichita, Kansas
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N5ZQ Harrelson William C
LANCAIR 320
Fixed-wing, single engine Higher Powered Racing LLC
Port Saint Lucie, Florida
Experimental 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N733AB Cessna
172N
Fixed-wing, single engine Kalman Engineering INC
Pekin, Illinois
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N737YS Cessna
172N
Fixed-wing, single engine Ck Max LLC
Stanford, Kentucky
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N83418 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N8762D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2026-05-05 ValidFAA registration status code V: Valid registration. All codes
N3926K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2026-05-04 ValidFAA registration status code V: Valid registration. All codes
N5997S Beech
A23-19
Fixed-wing, single engine Individual owner
Texas
Standard 2026-05-04 ValidFAA registration status code V: Valid registration. All codes
N7418R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2026-05-04 ValidFAA registration status code V: Valid registration. All codes
N8232N Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2026-05-04 ValidFAA registration status code V: Valid registration. All codes
N4324J Piper
PA-28-140
Fixed-wing, single engine Staple K Aviation LLC
Queen Creek, Arizona
Standard 2026-05-03 ValidFAA registration status code V: Valid registration. All codes
N9874E Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2026-05-03 ValidFAA registration status code V: Valid registration. All codes
N162WT Cessna
172P
Fixed-wing, single engine Fly Whiskey Tango 2 LLC
Scottsdale, Arizona
Standard 2026-05-02 ValidFAA registration status code V: Valid registration. All codes
N6697J Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2026-05-02 ValidFAA registration status code V: Valid registration. All codes
N16433 Piper
PA-28-140
Fixed-wing, single engine Pn4 Aviation Holdings LLC
Bishop, California
Standard 2026-05-01 ValidFAA registration status code V: Valid registration. All codes
N177RL Cessna
177
Fixed-wing, single engine M&G Air Service LLC
Wilmington, Delaware
Standard 2026-05-01 ValidFAA registration status code V: Valid registration. All codes
N53794 Cessna
172P
Fixed-wing, single engine Rick Aviation INC
Newport News, Virginia
Standard 2026-05-01 ValidFAA registration status code V: Valid registration. All codes
N6405W Piper
PA-28-140
Fixed-wing, single engine Nightline Air LLC
Saratoga Springs, Utah
Standard 2026-05-01 ValidFAA registration status code V: Valid registration. All codes
N6479W Piper
PA-28-140
Fixed-wing, single engine Management Ranch LLC
Sheridan, Wyoming
Standard 2026-05-01 ValidFAA registration status code V: Valid registration. All codes
N6599D Cessna
172N
Fixed-wing, single engine Blue Shield Aviation LLC
Saint Petersburg, Florida
Standard 2026-05-01 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.