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
N30166 Cessna
177
Fixed-wing, single engine Individual owner
New York
Standard 2025-12-30 ValidFAA registration status code V: Valid registration. All codes
N566BG Cessna
172N
Fixed-wing, single engine N566Bg LLC
Leesburg, Virginia
Standard 2025-12-30 ValidFAA registration status code V: Valid registration. All codes
N5896U Piper
PA-28-140
Fixed-wing, single engine Gift Academy INC
Vernon, Texas
Standard 2025-12-30 ValidFAA registration status code V: Valid registration. All codes
N7122R Piper
PA-28-140
Fixed-wing, single engine Simmons Heating and Air Conditioning LLC
Summerville, South Carolina
Standard 2025-12-30 ValidFAA registration status code V: Valid registration. All codes
N927TM Piper
PA-28-140
Fixed-wing, single engine Gmr Leasing LLC
Lincoln, Delaware
Standard 2025-12-30 ValidFAA registration status code V: Valid registration. All codes
N965JD Brush Dennis W
STD HMTN GLASTAR
Fixed-wing, single engine Circling Sky Aviation LLC
Canton, Mississippi
Experimental 2025-12-30 ValidFAA registration status code V: Valid registration. All codes
N61835 Cessna
172M
Fixed-wing, single engine Epic Aviation Leasing LLC
Puyallup, Washington
Standard 2025-12-29 ValidFAA registration status code V: Valid registration. All codes
N36434 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Kansas
Standard 2025-12-27 ValidFAA registration status code V: Valid registration. All codes
N4133X Aero Commander
100
Fixed-wing, single engine Individual owner
California
Standard 2025-12-27 ValidFAA registration status code V: Valid registration. All codes
N5213R Cessna
172M
Fixed-wing, single engine Soco Aero Leasing LLC
Santa Rosa, California
Standard 2025-12-27 ValidFAA registration status code V: Valid registration. All codes
N8720M Beech
23
Fixed-wing, single engine Hulme Aviation LLC
Gilbert, Arizona
Standard 2025-12-27 ValidFAA registration status code V: Valid registration. All codes
N9528D Piper
PA-22-160
Fixed-wing, single engine Greenhead Flight Services LLC
Bemidji, Minnesota
Standard 2025-12-27 ValidFAA registration status code V: Valid registration. All codes
N9652D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2025-12-27 ValidFAA registration status code V: Valid registration. All codes
N20046 Cessna
172M
Fixed-wing, single engine Blue Panda LLC
Olive Branch, Mississippi
Standard 2025-12-26 ValidFAA registration status code V: Valid registration. All codes
N383BH Cessna
172M
Fixed-wing, single engine Aero Aircraft 13 LLC
Jacksonville, Florida
Standard 2025-12-26 ValidFAA registration status code V: Valid registration. All codes
N7346J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-12-26 ValidFAA registration status code V: Valid registration. All codes
N739AQ Cessna
172N
Fixed-wing, single engine Azure Mahpiya LLC
Dublin, California
Standard 2025-12-26 ValidFAA registration status code V: Valid registration. All codes
N8369R Piper
PA-28-140
Fixed-wing, single engine Wolfgang Aviation LLC
Lynnwood, Washington
Standard 2025-12-26 ValidFAA registration status code V: Valid registration. All codes
N925N Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-12-26 ValidFAA registration status code V: Valid registration. All codes
N12291 Cessna
172M
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N2534P Piper
PA-22
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N3451Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N533FL Piper
PA-28-140
Fixed-wing, single engine Luvsflying Flight Training LLC
Staten Island, New York
Standard 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N6292W Piper
PA-28-140
Fixed-wing, single engine American Aviator LLC
Arlington, Texas
Standard 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N6312V Stroms Stefan
RV-6
Fixed-wing, single engine Moss Lake Ski Club LLC
Cherryville, North Carolina
Experimental 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N95154 Piper
PA-28-140
Fixed-wing, single engine Cen INC
Sheridan, Wyoming
Standard 2025-12-25 ValidFAA registration status code V: Valid registration. All codes
N32351 Piper
PA-28-151
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2025-12-23 ValidFAA registration status code V: Valid registration. All codes
N5436H Cessna
172M
Fixed-wing, single engine True Course Air LLC
Rich Hill, Missouri
Standard 2025-12-23 ValidFAA registration status code V: Valid registration. All codes
N50944 Cessna
172M
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2025-12-22 ValidFAA registration status code V: Valid registration. All codes
N55278 Piper
PA-32-260
Fixed-wing, single engine Co-owned owner
Florida
Standard 2025-12-22 ValidFAA registration status code V: Valid registration. All codes
N705FL Piper
PA-28-140
Fixed-wing, single engine Sue Christina Alicia
San Antonio, Texas
Standard 2025-12-22 ValidFAA registration status code V: Valid registration. All codes
N9848V Cessna
172M
Fixed-wing, single engine Superhawk Flight LLC
Plano, Texas
Standard 2025-12-22 ValidFAA registration status code V: Valid registration. All codes
N2050E Cessna
172N
Fixed-wing, single engine Tcv Capital Holdings LLC
Riverton, Utah
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N2334L Beech
23
Fixed-wing, single engine Individual owner
Mississippi
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N4240J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N64261 Cessna
172M
Fixed-wing, single engine Chickadee Aviation LLC
Auburn, Maine
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N73816 Cessna
172N
Fixed-wing, single engine Nedved Aviation LLC
Mitchell, South Dakota
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N8381L Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N9838V Cessna
172M
Fixed-wing, single engine Waypoint Equipment LLC
Mckinney, Texas
Standard 2025-12-21 ValidFAA registration status code V: Valid registration. All codes
N4348Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-12-20 ValidFAA registration status code V: Valid registration. All codes
N5067V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2025-12-20 ValidFAA registration status code V: Valid registration. All codes
N7182L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-12-20 ValidFAA registration status code V: Valid registration. All codes
N40953 Piper
PA-28-151
Fixed-wing, single engine Cws Capital Holdings LLC
Saint Petersburg, Florida
Standard 2025-12-19 ValidFAA registration status code V: Valid registration. All codes
N4804A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2025-12-19 ValidFAA registration status code V: Valid registration. All codes
N2466P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-12-18 ValidFAA registration status code V: Valid registration. All codes
N7064R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-12-18 ValidFAA registration status code V: Valid registration. All codes
N772BD Mcginty Edwin R
SMITH CUB
Fixed-wing, single engine Individual owner
Idaho
Experimental 2025-12-18 ValidFAA registration status code V: Valid registration. All codes
N100UD Cessna
150
Fixed-wing, single engine Individual owner
California
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N19801 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N4122Y Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Arkansas
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N4317R Cessna
172M
Fixed-wing, single engine Sam Aviation LLC
Long Beach, California
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N5376W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Utah
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N5948D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N7803G Cessna
172L
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N98ZT Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2025-12-17 ValidFAA registration status code V: Valid registration. All codes
N2201Y Cessna
177
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2025-12-16 ValidFAA registration status code V: Valid registration. All codes
N9687U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-12-16 ValidFAA registration status code V: Valid registration. All codes
N2243Y Cessna
177
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N27KK Piper
PA-28-180
Fixed-wing, single engine Individual owner
Louisiana
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N3647P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N427AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N4603V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Lazy Ta Legend Aircraft LLC
Wilmington, Delaware
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N46519 Cessna
172K
Fixed-wing, single engine Northern Pilots LLC
Bozeman, Montana
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N5208D Cessna
172N
Fixed-wing, single engine Varsity Flight Ops LLC
Las Vegas, Nevada
Standard 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N7060N Towne Gary A
STORK
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2025-12-15 ValidFAA registration status code V: Valid registration. All codes
N43569 Piper
PA-28-151
Fixed-wing, single engine Dash One LLC
Newbury, New Hampshire
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N46019 Cessna
172I
Fixed-wing, single engine La Porte Aero Club INC
La Porte, Indiana
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N4633Q Cessna
172M
Fixed-wing, single engine Mavis Air LLC
Poway, California
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N5126Q Cessna
172M
Fixed-wing, single engine Avco Patrol LLC
Lyndon, Kansas
Multiple 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N614PS Piper
PA-28-151
Fixed-wing, single engine Aeronaut Technolgy LLC
Jacksonville, Florida
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N7194G Cessna
172K
Fixed-wing, single engine Avco Patrol LLC
Lyndon, Kansas
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N79302 Cessna
172K
Fixed-wing, single engine Avco Patrol LLC
Lyndon, Kansas
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N9153H Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2025-12-14 ValidFAA registration status code V: Valid registration. All codes
N737CX Cessna
172N
Fixed-wing, single engine Eb Flight Training LLC
Daytona Beach, Florida
Standard 2025-12-13 ValidFAA registration status code V: Valid registration. All codes
N1516J Piper
PA-28-140
Fixed-wing, single engine H&H Holding LLC
Tucson, Arizona
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N1675H Piper
PA-28-161
Fixed-wing, single engine Icarus Flying Academy LLC
Farmingdale, New York
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N247AP Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N2927T Aero Commander
100
Fixed-wing, single engine Altitude Aviation Services LLC
Mountain Home, Idaho
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N3318E Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N333TM Piper
PA-18-150
Fixed-wing, single engine Skywagon Aero LLC
Wilmington, Delaware
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N359TC Clark Tony R
CLARK RV-3B
Fixed-wing, single engine Individual owner
Mississippi
Experimental 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N3776X Aero Commander
100
Fixed-wing, single engine Skyline Aircraft Maintenance INC
Nampa, Idaho
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N38522 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N5582U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N5793U Piper
PA-28-140
Fixed-wing, single engine Dfw Skydreams LLC
Fort Worth, Texas
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N63GK Piper
PA-28-140
Fixed-wing, single engine Rawareo LLC
Warsaw, Missouri
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N6616D Cessna
172N
Fixed-wing, single engine Mjng Investment Group LLC
Melbourne, Florida
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N75748 Cessna
172N
Fixed-wing, single engine Individual owner
New Mexico
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N7830G Cessna
172L
Fixed-wing, single engine Skildum&Company LLC
Grand Marais, Minnesota
Standard 2025-12-12 ValidFAA registration status code V: Valid registration. All codes
N1566J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Multiple 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N2005P Piper
PA-23-150
Fixed-wing, multi-engine Individual owner
Florida
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N2800W Socata
TAMPICO TB 9C
Fixed-wing, single engine Azul Aviation INC
Fort Worth, Texas
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N29436 Cessna
177
Fixed-wing, single engine Echelon Sport Aviation LLC
Los Angeles, California
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N6384W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N7155D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N737AF Cessna
172N
Fixed-wing, single engine Apm Leasing LLC
Casper, Wyoming
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N739EF Cessna
172N
Fixed-wing, single engine Individual owner
Washington
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N9280A Piper
PA-28-161
Fixed-wing, single engine Apm Leasing LLC
Casper, Wyoming
Standard 2025-12-11 ValidFAA registration status code V: Valid registration. All codes
N13461 Cessna
172M
Fixed-wing, single engine Aero Maintenance INC
Vancouver, Washington
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N47426 Piper
PA-28-161
Fixed-wing, single engine Lockhart Flying Club
Lockhart, Texas
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
Previous Page 15 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.