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
N9758D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-08-12 ValidFAA registration status code V: Valid registration. All codes
N1366B Luscombe
8F
Fixed-wing, single engine Individual owner
Texas
Standard 2025-08-11 ValidFAA registration status code V: Valid registration. All codes
N221ND Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2025-08-11 ValidFAA registration status code V: Valid registration. All codes
N2942X Cessna
177
Fixed-wing, single engine Individual owner
Florida
Standard 2025-08-11 ValidFAA registration status code V: Valid registration. All codes
N54838 Cessna
172P
Fixed-wing, single engine Draco Flight School DBA
Chino, California
Standard 2025-08-11 ValidFAA registration status code V: Valid registration. All codes
N78239 Cessna
172K
Fixed-wing, single engine Draco Flight School DBA
Chino, California
Standard 2025-08-11 ValidFAA registration status code V: Valid registration. All codes
N95259 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-08-11 ValidFAA registration status code V: Valid registration. All codes
N18XM Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-08-10 ValidFAA registration status code V: Valid registration. All codes
N46744 Cessna
172K
Fixed-wing, single engine Harrison Airplane LLC
Cynthiana, Kentucky
Standard 2025-08-10 ValidFAA registration status code V: Valid registration. All codes
N8786E Piper
PA-28-151
Fixed-wing, single engine Luv 2 Fly Ada LLC
Ada, Oklahoma
Standard 2025-08-10 ValidFAA registration status code V: Valid registration. All codes
N54003 Cessna
172P
Fixed-wing, single engine Albuquerque Aviation Academy
Albuquerque, New Mexico
Standard 2025-08-09 ValidFAA registration status code V: Valid registration. All codes
N70386 Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-08-09 ValidFAA registration status code V: Valid registration. All codes
N82754 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2025-08-09 ValidFAA registration status code V: Valid registration. All codes
N9574S Champion
7GCAA
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-08-09 ValidFAA registration status code V: Valid registration. All codes
N248GT Cessna
172P
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-08-08 ValidFAA registration status code V: Valid registration. All codes
N29422 Cessna
177
Fixed-wing, single engine Kmz Transport & Leasing Services LLC
Bradenton, Florida
Standard 2025-08-08 ValidFAA registration status code V: Valid registration. All codes
N44682 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-08-08 ValidFAA registration status code V: Valid registration. All codes
N4887G Cessna
172N
Fixed-wing, single engine Southern Aero LLC
Homestead, Florida
Standard 2025-08-08 ValidFAA registration status code V: Valid registration. All codes
N5055R Cessna
172M
Fixed-wing, single engine Great Lakes Air Ventures LLC
Mason, Michigan
Standard 2025-08-08 ValidFAA registration status code V: Valid registration. All codes
N733EB Cessna
172N
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2025-08-08 ValidFAA registration status code V: Valid registration. All codes
N123BV Piper
PA-22-160
Fixed-wing, single engine Infinity Metalworks INC
Newton, Kansas
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N19867 Cessna
172M
Fixed-wing, single engine Georges Aviation Services INC
Honolulu, Hawaii
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N2250B Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Connecticut
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N2311X Robinson Helicopter
R22 BETA
Helicopter Individual owner
Minnesota
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N44485 Piper
PA-28-151
Fixed-wing, single engine Kmr Aero LLC
Mount Sterling, Kentucky
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N52220 Cessna
172P
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N5585W Piper
PA-28
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N6009W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N6815B Piper
PA-22-150
Fixed-wing, single engine Copper River Airmotive LLC
Copper Center, Alaska
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N7113D Piper
PA-22-150
Fixed-wing, single engine N7113D LLC
Ardmore, Oklahoma
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N7228J Piper
PA-28-140
Fixed-wing, single engine Redhanded LLC
Dover, Delaware
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N7255Q Cessna
172L
Fixed-wing, single engine Sierra Sky Aviation LLC
Kalispell, Montana
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N7559R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N8191D Piper
PA-18A 150
Fixed-wing, single engine Swede Aviation LLC
Tucson, Arizona
Standard 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N839RV Edwards Edgar A
RV-9A
Fixed-wing, single engine High Performance Aircraft Products LLC
Bloomer, Wisconsin
Experimental 2025-08-07 ValidFAA registration status code V: Valid registration. All codes
N1431U Cessna
172M
Fixed-wing, single engine La Mooneytte LLC
Seabrook, South Carolina
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N24023 Connell Ralph
RV6A
Fixed-wing, single engine R14Alpha Aviation LLC
Dover, Delaware
Experimental 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N2854Z Piper
PA-22-160
Fixed-wing, single engine Intermountain Aviation LLC
Missoula, Montana
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N341FC Cessna
172N
Fixed-wing, single engine Condor Aero Club INC
Zelienople, Pennsylvania
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N3570E Cessna
172N
Fixed-wing, single engine Blackbird Aviation CORP
Van Nuys, California
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N3583Z Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N51WD Dawson Billy
HATZ-CLASSIC-HC-1
Fixed-wing, single engine Individual owner
Georgia
Experimental 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N5259H Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N5329W Piper
PA-28
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N5851U Piper
PA-28-140
Fixed-wing, single engine Foothill Aircraft Sales & Service INC
Upland, California
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N6330R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N8743N Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2025-08-06 ValidFAA registration status code V: Valid registration. All codes
N12617 Cessna
172M
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N13748 Cessna
172M
Fixed-wing, single engine Ries Farms LLC
Hastings, Minnesota
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N151RV Stribling Ken
RV6-A
Fixed-wing, single engine Individual owner
Colorado
Experimental 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N20837 Cessna
172M
Fixed-wing, single engine Mjm Enterprise Holdings LLC
Drexel, Missouri
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N3117Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alabama
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N41FA Cessna
172N
Fixed-wing, single engine Kingsky Flight Academy LLC
Lakeland, Florida
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N4414J Piper
PA-28-140
Fixed-wing, single engine Htf Aviation LLC
Kalispell, Montana
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N6379C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N734WF Cessna
172N
Fixed-wing, single engine Individual owner
Arkansas
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N7369J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N98319 Piper
PA-28-140
Fixed-wing, single engine Restin Air LLC
Kalispell, Montana
Standard 2025-08-05 ValidFAA registration status code V: Valid registration. All codes
N12243 Cessna
172M
Fixed-wing, single engine Phoenix Sky Aviation LLC
Gilbert, Arizona
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N123VC Cessna
172M
Fixed-wing, single engine San Bernardino Community College District
San Bernardino, California
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N13330 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N1852J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N237ML Piper
PA-18A 150
Fixed-wing, single engine N237Ml LLC
Glennallen, Alaska
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N381FC Piper
PA-28-151
Fixed-wing, single engine Individual owner
Missouri
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N544WB Kincaid Wade
VANS RV 6-A
Fixed-wing, single engine Charlie Foxtrot Airworks LLC
Jacksboro, Texas
Experimental 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N55094 Piper
PA-28-140
Fixed-wing, single engine Remedy Aviation LLC
Langford, South Dakota
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N6768J Piper
PA-28-140
Fixed-wing, single engine Suncoast Flight Training LLC
Sarasota, Florida
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N6948W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N765AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Kentucky
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N82065 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-08-04 ValidFAA registration status code V: Valid registration. All codes
N172WJ Cessna
172M
Fixed-wing, single engine Blue Skies Flight Training LLC
Gainesville, Florida
Standard 2025-08-02 ValidFAA registration status code V: Valid registration. All codes
N2300L Beech
23
Fixed-wing, single engine Av8N Idaho LLC
Greenleaf, Idaho
Standard 2025-08-02 ValidFAA registration status code V: Valid registration. All codes
N6338R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-08-02 ValidFAA registration status code V: Valid registration. All codes
N155DK Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
New York
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N20471 Cessna
172M
Fixed-wing, single engine Cp Aircraft Leasing LLC
Danville, California
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N4583R Piper
PA-28-140
Fixed-wing, single engine Dmac Aircraft LLC
Savannah, Georgia
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N46344 Cessna
172K
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N523K Hensel Daryle A
RV 6
Fixed-wing, single engine Individual owner
Utah
Experimental 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N6806B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N6949B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N738PH Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N79915 Cessna
172K
Fixed-wing, single engine Jersey Aviation LLC
East Orange, New Jersey
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N83009 Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2025-08-01 ValidFAA registration status code V: Valid registration. All codes
N1303C Piper
PA-22-135
Fixed-wing, single engine Individual owner
Arkansas
Standard 2025-07-31 ValidFAA registration status code V: Valid registration. All codes
N4814C Cessna
172P
Fixed-wing, single engine Kingsky Flight Academy LLC
Lakeland, Florida
Standard 2025-07-31 ValidFAA registration status code V: Valid registration. All codes
N64538 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2025-07-31 ValidFAA registration status code V: Valid registration. All codes
N78358 Cessna
172K
Fixed-wing, single engine All American Aviation LLC
Fort Worth, Texas
Standard 2025-07-31 ValidFAA registration status code V: Valid registration. All codes
N8466L Cessna
172I
Fixed-wing, single engine Wild Blue Yonder LLC
Lewes, Delaware
Standard 2025-07-31 ValidFAA registration status code V: Valid registration. All codes
N9047D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-07-31 ValidFAA registration status code V: Valid registration. All codes
N1190M Cessna
172K
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N290KC Robinson Helicopter
R22 BETA
Helicopter Tsunami Skydivers INC
Las Vegas, Nevada
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N35345 Cessna
172I
Fixed-wing, single engine Flight One Holdings LLC
Devils Lake, North Dakota
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N4392M Piper
PA-12
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N4440Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N5271W Piper
PA-28
Fixed-wing, single engine Brown Thrasher Aero LLC
Midland, Georgia
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N5291S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N53236 Cessna
172P
Fixed-wing, single engine Principles of Flight Training LLC
Lees Summit, Missouri
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N5451L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Utah
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N6440R Piper
PA-28-140
Fixed-wing, single engine Air George LLC
Oblong, Illinois
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
N734FQ Cessna
172N
Fixed-wing, single engine Individual owner
Washington
Standard 2025-07-30 ValidFAA registration status code V: Valid registration. All codes
Previous Page 24 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.