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
N1886T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N293MJ Cessna
172P
Fixed-wing, single engine Little Dock Aviation LLC
Water Valley, Mississippi
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N449AG Cessna
177
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N8750N Piper
PA-28-140
Fixed-wing, single engine Midwest Avionics LLC
Peculiar, Missouri
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N911UA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N9208L American
AA-5
Fixed-wing, single engine Brookway Investments LLC
Brookhaven, Mississippi
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N9462D Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Nevada
Multiple 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N9801W Piper
PA-28-140
Fixed-wing, single engine North Little Rock Air INC
North Little Rock, Arkansas
Standard 2025-11-22 ValidFAA registration status code V: Valid registration. All codes
N5283W Piper
PA-28
Fixed-wing, single engine Individual owner
Alabama
Standard 2025-11-21 ValidFAA registration status code V: Valid registration. All codes
N6462D Cessna
172N
Fixed-wing, single engine N2893E LLC
Reno, Nevada
Standard 2025-11-21 ValidFAA registration status code V: Valid registration. All codes
N739FP Cessna
172N
Fixed-wing, single engine Tmw Aviation LLC
Portland, Oregon
Standard 2025-11-21 ValidFAA registration status code V: Valid registration. All codes
N96VA Piper
PA-28-151
Fixed-wing, single engine Jak Real Estate LLC
Gorham, Maine
Standard 2025-11-21 ValidFAA registration status code V: Valid registration. All codes
N99263 Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-11-21 ValidFAA registration status code V: Valid registration. All codes
N9940V Cessna
172M
Fixed-wing, single engine Soco Aero Leasing LLC
Santa Rosa, California
Standard 2025-11-21 ValidFAA registration status code V: Valid registration. All codes
N172KP Cessna
172K
Fixed-wing, single engine Individual owner
North Carolina
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N300EF Piper
PA-28-151
Fixed-wing, single engine Mrr LLC
Schererville, Indiana
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N3028M Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N43685 Piper
PA-28-151
Fixed-wing, single engine Horizon Aviation LLC
Brooks, Georgia
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N4426J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N458W Piper
PA-28-140
Fixed-wing, single engine Tls Aviation LLC
Smyrna, Tennessee
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N46722 Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N57667 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Virginia
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N6279 Piper
PA-28-140
Fixed-wing, single engine Wings of Grace LLC
Orlando, Florida
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N7415R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N82274 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N831VZ Cessna
172P
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2025-11-20 ValidFAA registration status code V: Valid registration. All codes
N2550M Piper
PA-28-161
Fixed-wing, single engine Earthcom INC
Williamston, Michigan
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N26793 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Withheld at owner's request
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N4472R Cessna
172M
Fixed-wing, single engine Flyrite Aviation LLC
Fort Myers, Florida
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N474FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N75704 Cessna
172N
Fixed-wing, single engine Lanning 1 Aviation LLC
Amarillo, Texas
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N797R Engvall Ricky A
MURPHY AC MFG-REBEL
Fixed-wing, single engine Individual owner
Michigan
Experimental 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N8454F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N9482D Piper
PA-18-150
Fixed-wing, single engine Hanley Company LLC
Littleton, Colorado
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N9662Q Cessna
172M
Fixed-wing, single engine Co-owned owner
Delaware
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N98981 Cessna
172P
Fixed-wing, single engine Airplane and Drone Flight Instruction LLC
Orlando, Florida
Standard 2025-11-19 ValidFAA registration status code V: Valid registration. All codes
N1461T Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N2836P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Maine
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N2893M Piper
PA-28-161
Fixed-wing, single engine Rls Rental CO INC DBA
Joplin, Missouri
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N316AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N3609Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N3925K Piper
PA-28-140
Fixed-wing, single engine Dte Aviation LLC
Cherry Hill, New Jersey
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N5217W Piper
PA-28
Fixed-wing, single engine S B Enterprise LLC
Marshall, Texas
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N7243J Piper
PA-28-140
Fixed-wing, single engine Nova Flight LLC
Gainesville, Virginia
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N737LX Cessna
172N
Fixed-wing, single engine N737Lx LLC
Manassas, Virginia
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N73868 Cessna
172N
Fixed-wing, single engine Ca Aero LLC
Fairfield, New Jersey
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N9586W Piper
PA-28-140
Fixed-wing, single engine Alpha 3 LLC
Troy, Kansas
Standard 2025-11-18 ValidFAA registration status code V: Valid registration. All codes
N765FW Wellman Fred L
PANTHER LS
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2025-11-17 ValidFAA registration status code V: Valid registration. All codes
N7758G Cessna
172L
Fixed-wing, single engine Gallo Enterprises INC
Wonder Lake, Illinois
Standard 2025-11-17 ValidFAA registration status code V: Valid registration. All codes
N942BB Robert E Baggett
RV3
Fixed-wing, single engine Individual owner
Ohio
Experimental 2025-11-17 ValidFAA registration status code V: Valid registration. All codes
N1334P Piper
PA-23
Fixed-wing, multi-engine N1334P LLC
Titusville, Florida
Standard 2025-11-16 ValidFAA registration status code V: Valid registration. All codes
N1970H Piper
PA-28-161
Fixed-wing, single engine Cape Fear Aviation Maintenance LLC
Fayetteville, North Carolina
Standard 2025-11-16 ValidFAA registration status code V: Valid registration. All codes
N57395 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-11-16 ValidFAA registration status code V: Valid registration. All codes
N7134L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Cook'S Aviation LLC
Conover, North Carolina
Standard 2025-11-16 ValidFAA registration status code V: Valid registration. All codes
N9846U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2025-11-16 ValidFAA registration status code V: Valid registration. All codes
N98ET N34762 Inc
GLASTAR
Fixed-wing, single engine Individual owner
Arizona
Experimental 2025-11-16 ValidFAA registration status code V: Valid registration. All codes
N3432M Piper
PA-28-161
Fixed-wing, single engine Sears Megan
Rigby, Idaho
Standard 2025-11-15 ValidFAA registration status code V: Valid registration. All codes
N78305 Cessna
172K
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-11-15 ValidFAA registration status code V: Valid registration. All codes
N2680T Piper
PA-28-140
Fixed-wing, single engine Aviyon Aviation LLC
Orlando, Florida
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N4199Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
North Dakota
Restricted 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N4333B Piper
PA-28-161
Fixed-wing, single engine Land & Leave LLC
Helena, Montana
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N513JC Champagne
EAABIPLANE P2M
Fixed-wing, single engine Individual owner
Indiana
Experimental 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N5623E Cessna
172N
Fixed-wing, single engine Kd3262 LLC
Downers Grove, Illinois
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N734HJ Cessna
172N
Fixed-wing, single engine Mb Airworks LLC
Saint Petersburg, Florida
Restricted 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N73530 Cessna
172M
Fixed-wing, single engine Saffron Aviation LLC
Cookeville, Tennessee
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N737BD Cessna
172N
Fixed-wing, single engine Music City Air LLC
Rogersville, Alabama
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N7496D Piper
PA-18A
Fixed-wing, single engine Individual owner
Texas
Restricted 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N83268 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N8362R Piper
PA-28-140
Fixed-wing, single engine Core Flight Academy LLC
Asheboro, North Carolina
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N8933D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Wyoming
Standard 2025-11-14 ValidFAA registration status code V: Valid registration. All codes
N20182 Cessna
172M
Fixed-wing, single engine Individual owner
Maine
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N272KM Hansen Paul Arvid
GLASTAR
Fixed-wing, single engine Individual owner
Colorado
Experimental 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N47768 Piper
PA-28-161
Fixed-wing, single engine
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N5300U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N5546U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Florida
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N63017 Cessna
172P
Fixed-wing, single engine Adams Aviation Services INC Trustee
Wilmington, Delaware
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N6343E Cessna
172N
Fixed-wing, single engine Catskill Mountain Air LLC
Milford, New York
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N7502D Piper
PA-22-150
Fixed-wing, single engine Flight Lead LLC
Casper, Wyoming
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N80182 Cessna
172M
Fixed-wing, single engine Individual owner
Arkansas
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N8093N Piper
PA-28-140
Fixed-wing, single engine Saraland High School
Saraland, Alabama
Standard 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N9108D Piper
PA-18-150
Fixed-wing, single engine J&P Aircraft LLC
Chugiak, Alaska
Multiple 2025-11-13 ValidFAA registration status code V: Valid registration. All codes
N3876X Aero Commander
100
Fixed-wing, single engine Flying Weenie LLC
Henderson, Texas
Standard 2025-11-12 ValidFAA registration status code V: Valid registration. All codes
N6013D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2025-11-12 ValidFAA registration status code V: Valid registration. All codes
N7229J Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-11-12 ValidFAA registration status code V: Valid registration. All codes
N9875G Cessna
172L
Fixed-wing, single engine 1 Aircraft LLC
Kissimmee, Florida
Standard 2025-11-12 ValidFAA registration status code V: Valid registration. All codes
N73425 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-11-11 ValidFAA registration status code V: Valid registration. All codes
N13698 Cessna
172M
Fixed-wing, single engine Park Avenue Group INC
Stuart, Florida
Standard 2025-11-10 ValidFAA registration status code V: Valid registration. All codes
N34W Wight Carroll H
THORP T-18
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-11-10 ValidFAA registration status code V: Valid registration. All codes
N3874Z Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Multiple 2025-11-10 ValidFAA registration status code V: Valid registration. All codes
N40HF Cessna
150L
Fixed-wing, single engine Individual owner
California
Multiple 2025-11-10 ValidFAA registration status code V: Valid registration. All codes
N6539R Beech
B19
Fixed-wing, single engine Individual owner
Nevada
Standard 2025-11-10 ValidFAA registration status code V: Valid registration. All codes
N7500R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-11-10 ValidFAA registration status code V: Valid registration. All codes
N151DF Wilson Art W
RV-6
Fixed-wing, single engine Individual owner
Washington
Experimental 2025-11-09 ValidFAA registration status code V: Valid registration. All codes
N2393T Piper
PA-28-140
Fixed-wing, single engine Shool Board of Marion County Florida
Ocala, Florida
Standard 2025-11-09 ValidFAA registration status code V: Valid registration. All codes
N6835J Piper
PA-28-151
Fixed-wing, single engine Individual owner
Kentucky
Standard 2025-11-09 ValidFAA registration status code V: Valid registration. All codes
N430Y Rohde-Elliott-Durham
GREAT LAKES 2T-1L
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2025-11-08 ValidFAA registration status code V: Valid registration. All codes
N1226A Piper
PA-18
Fixed-wing, single engine Individual owner
Washington
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N122EZ Benard Augusto
LONG EZ
Fixed-wing, single engine Co-owned owner
California
Experimental 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N2436Y Piper
PA-28-161
Fixed-wing, single engine Alpha Flight Academy
Concord, California
Standard 2025-11-07 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N26086 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Joe Hoerter LLC
Hilton Head Island, South Carolina
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
Previous Page 17 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.