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
N7342J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2026-04-12 ValidFAA registration status code V: Valid registration. All codes
N100M Cessna
172M
Fixed-wing, single engine Sky Odyssey Aviation LLC
Gulf Breeze, Florida
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N1732V Cessna
172M
Fixed-wing, single engine Elk & Ram Aviation Group LLC
San Antonio, Texas
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N4456R Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N4750A Piper
PA-22-150
Fixed-wing, single engine 22Av Group LLC
Austin, Texas
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N5068X Champion
7KCAB
Fixed-wing, single engine Individual owner
Florida
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N82743 Piper
PA-28-161
Fixed-wing, single engine Up and Away Aviation LLC
Poughkeepsie, New York
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N9421E Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N9764W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2026-04-11 ValidFAA registration status code V: Valid registration. All codes
N171EP Piper
PA-28-161
Fixed-wing, single engine Azure Leasing LLC
Oakdale, Pennsylvania
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N2873P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Restricted 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N3699Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N4374U Piper
PA-28-161
Fixed-wing, single engine N4374U LLC
Dover, Delaware
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N734T Cessna
172N
Fixed-wing, single engine Jsta LLC
Sheridan, Wyoming
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N754CT Robinson Helicopter
R22 BETA
Helicopter Aoa Aviation Service LLC
Waxhaw, North Carolina
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N78846 Cessna
172K
Fixed-wing, single engine Aero Investors Lc
Jackson, Michigan
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N80214 Cessna
172M
Fixed-wing, single engine Delta Capital INC
Blair, Nebraska
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N88200 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Florida
Standard 2026-04-10 ValidFAA registration status code V: Valid registration. All codes
N1801T Piper
PA-28-140
Fixed-wing, single engine Severe Clear LLC
Bethany Beach, Delaware
Standard 2026-04-09 ValidFAA registration status code V: Valid registration. All codes
N21446 Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2026-04-09 ValidFAA registration status code V: Valid registration. All codes
N4488X Piper
PA-28-151
Fixed-wing, single engine Reklis Aviation LLC
Schaumburg, Illinois
Standard 2026-04-09 ValidFAA registration status code V: Valid registration. All codes
N7407F American Champion Aircraft
7GCAA
Fixed-wing, single engine Fp Aircraft Holdings LLC
Alvord, Texas
Standard 2026-04-09 ValidFAA registration status code V: Valid registration. All codes
N26244 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Clear Blue Aviation LLC
Melbourne, Florida
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N30370 Cessna
172M
Fixed-wing, single engine Fellow Ship Aviation LLC
Monticello, Georgia
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N3AA Bucker Jungmann
C.A.S.A. 1.131
Fixed-wing, single engine Individual owner
Illinois
Experimental 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N5283R Cessna
172M
Fixed-wing, single engine Fellow Ship Aviation LLC
Monticello, Georgia
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N5889L American
AA-5
Fixed-wing, single engine 100 Rads Corporation
Omaha, Nebraska
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N6722J Piper
PA-28-140
Fixed-wing, single engine Planenutz LLC
Deland, Florida
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N7744T Piper
PA-28-140
Fixed-wing, single engine Dickert Investments Holdings LLC
Cave Creek, Arizona
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N84440 Cessna
172K
Fixed-wing, single engine Yankee Charlie LLC
Melbourne, Florida
Standard 2026-04-08 ValidFAA registration status code V: Valid registration. All codes
N1532J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2026-04-07 ValidFAA registration status code V: Valid registration. All codes
N4452Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-04-07 ValidFAA registration status code V: Valid registration. All codes
N4672G Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2026-04-07 ValidFAA registration status code V: Valid registration. All codes
N1705J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N20202 Cessna
172M
Fixed-wing, single engine Lolani Leasing LLC
Los Angeles, California
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N2390Z Beech
23
Fixed-wing, single engine Individual owner
Indiana
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N3357Z Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N56798 Piper
PA-28-151
Fixed-wing, single engine Warrior Airways LLC
Coral Springs, Florida
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N6283W Piper
PA-28-140
Fixed-wing, single engine Efficientflight Aviation LLC
Naples, Florida
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N63SA Cessna
172M
Fixed-wing, single engine Sky View Aviation LLC
Lenoir, North Carolina
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N7209G Cessna
172K
Fixed-wing, single engine Elite Planes LLC
Menifee, California
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N737DG Cessna
172N
Fixed-wing, single engine Eagle Aviation LLC
Spearfish, South Dakota
Multiple 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N7380G Cessna
172K
Fixed-wing, single engine Orlandi Properties LLC
Blairstown, New Jersey
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N76JV Villeneuve John J
RV-6
Fixed-wing, single engine Individual owner
California
Experimental 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N81PM Piper
PA-28-140
Fixed-wing, single engine Spinnaker Aviation LLC
Conroe, Texas
Standard 2026-04-06 ValidFAA registration status code V: Valid registration. All codes
N64545 Cessna
172P
Fixed-wing, single engine Airplane and Drone Flight Instruction LLC
Windermere, Florida
Standard 2026-04-05 ValidFAA registration status code V: Valid registration. All codes
N78799 Cessna
172K
Fixed-wing, single engine Aerolanding LLC
Enterprise, Alabama
Standard 2026-04-05 ValidFAA registration status code V: Valid registration. All codes
N12588 Cessna
172M
Fixed-wing, single engine Air Ally Asset Management LLC
Chisago City, Minnesota
Standard 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N1711D Car-Mel Inc
STD HMLTN ACFT GLSTR
Fixed-wing, single engine Individual owner
New York
Experimental 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N17UP Cessna
172M
Fixed-wing, single engine Rhinelander Flying Service INC
Rhinelander, Wisconsin
Standard 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N5090W Piper
PA-28-160
Fixed-wing, single engine Jaybird Aviation LLC
San Antonio, Texas
Standard 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N53632 Cessna
172P
Fixed-wing, single engine Siple Aviation LLC
Kalispell, Montana
Standard 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N5419S Piper
PA-28-140
Fixed-wing, single engine Aberdeen School District
Aberdeen, Mississippi
Standard 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N601VS Simon Verne
LONG EZ
Fixed-wing, single engine Jireh Wings LLC
Las Vegas, Nevada
Experimental 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N7766G Cessna
172L
Fixed-wing, single engine Air Ally Asset Management LLC
Chisago City, Minnesota
Standard 2026-04-04 ValidFAA registration status code V: Valid registration. All codes
N15NF Cessna
172K
Fixed-wing, single engine
Standard 2026-04-03 ValidFAA registration status code V: Valid registration. All codes
N4387P Piper
PA-23-160
Fixed-wing, multi-engine Aurora 17 Holdings LLC
Aurora, Oregon
Standard 2026-04-03 ValidFAA registration status code V: Valid registration. All codes
N15470 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N2218Y Cessna
177
Fixed-wing, single engine Individual owner
Ohio
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N221LG Hertz David
RV6A
Fixed-wing, single engine Individual owner
Utah
Experimental 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N2895X Cessna
177
Fixed-wing, single engine Boydn2895X LLC
Santa Cruz, California
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N2963X Cessna
177
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N4382Q Cessna
172L
Fixed-wing, single engine Legends Air LLC
Wilmington, Delaware
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N5268J Cessna
172N
Fixed-wing, single engine Reach for Skies LLC
San Antonio, Texas
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N575BB Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N5987W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Montana
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N6982W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N84907 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N8999R Champion
7GCB
Fixed-wing, single engine Detroit Lakes Aviation INC
Detroit Lakes, Minnesota
Standard 2026-04-02 ValidFAA registration status code V: Valid registration. All codes
N12822 Cessna
172M
Fixed-wing, single engine Courtney Aviation LLC
Columbia, California
Standard 2026-04-01 ValidFAA registration status code V: Valid registration. All codes
N1417U Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2026-04-01 ValidFAA registration status code V: Valid registration. All codes
N172UF Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2026-04-01 ValidFAA registration status code V: Valid registration. All codes
N3164T Cessna
177
Fixed-wing, single engine Overflight LLC
Harahan, Louisiana
Standard 2026-04-01 ValidFAA registration status code V: Valid registration. All codes
N3945Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-03-31 ValidFAA registration status code V: Valid registration. All codes
N3991K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2026-03-31 ValidFAA registration status code V: Valid registration. All codes
N5848L American
AA-5
Fixed-wing, single engine N5848L LLC
San Francisco, California
Standard 2026-03-31 ValidFAA registration status code V: Valid registration. All codes
N82598 Piper
PA-18-150
Fixed-wing, single engine Foothill Aviation LLC
Iliamna, Alaska
Standard 2026-03-31 ValidFAA registration status code V: Valid registration. All codes
N901T American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2026-03-31 ValidFAA registration status code V: Valid registration. All codes
N92789 Cessna
172M
Fixed-wing, single engine N5746U LLC
Dover, Delaware
Standard 2026-03-31 ValidFAA registration status code V: Valid registration. All codes
N2092A Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Texas
Standard 2026-03-30 ValidFAA registration status code V: Valid registration. All codes
N2836T Piper
PA-28-140
Fixed-wing, single engine
Standard 2026-03-30 ValidFAA registration status code V: Valid registration. All codes
N51249 Cessna
172M
Fixed-wing, single engine Flying Turkey LLC
Flower Mound, Texas
Multiple 2026-03-30 ValidFAA registration status code V: Valid registration. All codes
N5159H Piper
PA-14
Fixed-wing, single engine H&H Restoration LLC
Wasilla, Alaska
Multiple 2026-03-30 ValidFAA registration status code V: Valid registration. All codes
N7262J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-03-30 ValidFAA registration status code V: Valid registration. All codes
N739PJ Cessna
172N
Fixed-wing, single engine New Mexico Flying Eagle INC
Tucson, Arizona
Standard 2026-03-30 ValidFAA registration status code V: Valid registration. All codes
N12772 Cessna
172M
Fixed-wing, single engine Bell Ornithopters Flying Club INC
Eastlake, Colorado
Standard 2026-03-29 ValidFAA registration status code V: Valid registration. All codes
N329T Piper
PA-18-105 SPECIAL
Fixed-wing, single engine Individual owner
Florida
Standard 2026-03-29 ValidFAA registration status code V: Valid registration. All codes
N349TW Symphony Aircraft Ind Inc
SA 160
Fixed-wing, single engine Pilot Enterprises LLC
Norfolk, Virginia
Standard 2026-03-29 ValidFAA registration status code V: Valid registration. All codes
N3712P Piper
PA-22-150
Fixed-wing, single engine Ptl Endeavors LLC
Deland, Florida
Standard 2026-03-29 ValidFAA registration status code V: Valid registration. All codes
N709DF Piper
PA-28-161
Fixed-wing, single engine Gregoire Aviation Services LLC
New York, New York
Standard 2026-03-29 ValidFAA registration status code V: Valid registration. All codes
N105G Goble Ted
MARGART CHARGER MA-5
Fixed-wing, single engine Individual owner
Oregon
Experimental 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N14303 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N1576J Piper
PA-28-140
Fixed-wing, single engine Inspire Aviation LLC
Magnolia, Texas
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N171VA Cessna
172N
Fixed-wing, single engine Eckles Aircraft LLC
Holdenville, Oklahoma
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N20488 Cessna
172M
Fixed-wing, single engine Aurora 17 Holdings LLC
Aurora, Oregon
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N2380P Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N4270J Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N5760F Piper
PA-28-140
Fixed-wing, single engine G & D Leasing LLC
Tempe, Arizona
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N577CM Piper
PA-18-150
Fixed-wing, single engine Ellison Ranching CO
Elko, Nevada
Standard 2026-03-28 ValidFAA registration status code V: Valid registration. All codes
N6127W Piper
PA-28-140
Fixed-wing, single engine La Aviation LTD
Wilmington, Delaware
Standard 2026-03-28 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 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.