The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 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.

When the aircraft were built by decade

By decade built, as a table
aircraft
19305
1940234
19502,383
19605,444
197011,405
19801,935
19901,132
2000831
201099
202055

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
Failure reports by year, as a table
reports
952
961
972
986
007
0139
0224
0339
0430
0541
0623
0732
0818
0915
1013
117
1210
134
146
152
169
171
186
191
203
211
232
251
264

Parts most often reported as the reports name them

Spar18Tube17Cylinder15Bulkhead9Alternator8Control Cable8Bolt7Carburetor7Fitting6Float6
Parts most reported, as a table
reports
Spar18
Tube17
Cylinder15
Bulkhead9
Alternator8
Control Cable8
Bolt7
Carburetor7
Fitting6
Float6

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

The whole map of how records connect · these connections as data: /graph/engine/lycoming-o-320-series.json.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N977KJ Cessna
172M
Fixed-wing, single engine Falcon Aviation INC
Southfield, Michigan
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N99377 Cessna
172P
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N15994 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N1774V Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N1952P Piper
PA-18A
Fixed-wing, single engine Individual owner
Utah
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N199TP Piper
PA-28-140
Fixed-wing, single engine Blue Line Aviation LLC
Dunbar, Nebraska
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N24010 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N2736P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nevada
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N4798E Cessna
172N
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N618TM Cessna
172N
Fixed-wing, single engine Tuskegee Airmen National Historical Museum
Detroit, Michigan
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N65JS Starr James D
RV-4
Fixed-wing, single engine Call One INC
Clarinda, Iowa
Experimental 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N74929 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N80636 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-10-24 ValidFAA registration status code V: Valid registration. All codes
N33377 Piper
PA-28-151
Fixed-wing, single engine Owens Aircraft LLC
Sacramento, California
Standard 2023-10-23 ValidFAA registration status code V: Valid registration. All codes
N555LA Cessna
172N
Fixed-wing, single engine South Latitude Aviation Service LLC
Humble, Texas
Standard 2023-10-23 ValidFAA registration status code V: Valid registration. All codes
N73BW Piper
PA-28-161
Fixed-wing, single engine Bravo Whiskey Holdings LLC
Lewis Center, Ohio
Standard 2023-10-23 ValidFAA registration status code V: Valid registration. All codes
N7558G Cessna
172L
Fixed-wing, single engine Individual owner
West Virginia
Standard 2023-10-23 ValidFAA registration status code V: Valid registration. All codes
N9824L Cessna
172P
Fixed-wing, single engine St Pete Aviation Services LLC
Saint Petersburg, Florida
Standard 2023-10-23 ValidFAA registration status code V: Valid registration. All codes
N1397U Cessna
172M
Fixed-wing, single engine Rock Solid Aviation LLC
Lake Charles, Louisiana
Standard 2023-10-22 ValidFAA registration status code V: Valid registration. All codes
N5424S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2023-10-22 ValidFAA registration status code V: Valid registration. All codes
N74WB Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-22 ValidFAA registration status code V: Valid registration. All codes
N12974 Cessna
172M
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2023-10-21 ValidFAA registration status code V: Valid registration. All codes
N20612 Cessna
172M
Fixed-wing, single engine Bentley Drive LLC
Anchorage, Alaska
Standard 2023-10-20 ValidFAA registration status code V: Valid registration. All codes
N255X Hall Larry D
RV-6
Fixed-wing, single engine Individual owner
Utah
Experimental 2023-10-20 ValidFAA registration status code V: Valid registration. All codes
N55578 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-10-20 ValidFAA registration status code V: Valid registration. All codes
N734RK Cessna
172N
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-10-20 ValidFAA registration status code V: Valid registration. All codes
N9515K Piper
PA-28-151
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-10-20 ValidFAA registration status code V: Valid registration. All codes
N146T Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N35344 Cessna
172I
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N4398Z Piper
PA-18-150
Fixed-wing, single engine W I Moore Ranch CO INC
Douglas, Wyoming
Standard 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N5915D Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N6624H Cessna
172M
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N8961C Piper
PA-28-151
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N914 Cott
PITTS SPECIAL S-1
Fixed-wing, single engine Co-owned owner
Georgia
Experimental 2023-10-19 ValidFAA registration status code V: Valid registration. All codes
N1074T Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N13077 Cessna
172M
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N1544E Cessna
172N
Fixed-wing, single engine Atlas Aero Training LLC
Casper, Wyoming
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N1643J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N2417K Vern Darley
HATZ CLASSIC
Fixed-wing, single engine Individual owner
Georgia
Experimental 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N55JE Piper
PA-23
Fixed-wing, multi-engine Lakes Area Aviation LLC
Little Falls, Minnesota
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N5906W Piper
PA-28-150
Fixed-wing, single engine Gjj LLC
Kalispell, Montana
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N80277 Cessna
172M
Fixed-wing, single engine Usaeroflight LLC
Greenville, South Carolina
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N8171Y Piper
PA-28-161
Fixed-wing, single engine Faith Works Aviation LLC
Glenmoore, Pennsylvania
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N844 Zarra Ron E
RV-4
Fixed-wing, single engine Individual owner
Idaho
Experimental 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N8825A Cessna
172P
Fixed-wing, single engine Gauges Green LLC
Euless, Texas
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N915L Cessna
172M
Fixed-wing, single engine Cardinal Flying CORP
San Jose, California
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N9645D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2023-10-18 ValidFAA registration status code V: Valid registration. All codes
N512AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-10-17 ValidFAA registration status code V: Valid registration. All codes
N53742 Cessna
172P
Fixed-wing, single engine Mh Aviation INC
Lancaster, California
Standard 2023-10-17 ValidFAA registration status code V: Valid registration. All codes
N6655W Piper
PA-28-140
Fixed-wing, single engine 5B Aviation LLC
Duncan, Oklahoma
Standard 2023-10-17 ValidFAA registration status code V: Valid registration. All codes
N7297L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2023-10-17 ValidFAA registration status code V: Valid registration. All codes
N9365P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-10-17 ValidFAA registration status code V: Valid registration. All codes
N8485L Robinson Helicopter
R22 BETA
Helicopter Individual owner
Alaska
Standard 2023-10-16 ValidFAA registration status code V: Valid registration. All codes
N3337E Cessna
172N
Fixed-wing, single engine Altitude Aviation LLC
Lenoir, North Carolina
Standard 2023-10-15 ValidFAA registration status code V: Valid registration. All codes
N1539E Cessna
172N
Fixed-wing, single engine Mls Aviation LLC
Yorba Linda, California
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N443RL American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N44931 Piper
PA-28-161
Fixed-wing, single engine H&R Aircraft CO LLC
Ward, Arkansas
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N4829G Cessna
172N
Fixed-wing, single engine Soaring Raven LLC
Seattle, Washington
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N491G Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N5135E Cessna
172N
Fixed-wing, single engine Commercial Safe and Lock INC
Imperial, Missouri
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N6003U Piper
PA-28-140
Fixed-wing, single engine Soarin Seven Aviation LLC
Morton, Illinois
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N603LH Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N6820B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N80534 Cessna
172M
Fixed-wing, single engine Millionair INC
Ferndale, Washington
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N9469H Cessna
172M
Fixed-wing, single engine Airplanes and Attitude LLC
Mckinney, Texas
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N99508 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-14 ValidFAA registration status code V: Valid registration. All codes
N2378Z Beech
23
Fixed-wing, single engine Mugleston Tim H
Waldport, Oregon
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N5602W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N607FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N6573W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N737MH Cessna
172N
Fixed-wing, single engine Mls Aviation LLC
Yorba Linda, California
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N738XD Cessna
172N
Fixed-wing, single engine Mls Aviation LLC
Yorba Linda, California
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N7684S Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N7869G Cessna
172L
Fixed-wing, single engine Mls Aviation LLC
Yorba Linda, California
Standard 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N837K Great Lakes
2T-1A
Fixed-wing, single engine Co-owned owner
Tennessee
Experimental 2023-10-13 ValidFAA registration status code V: Valid registration. All codes
N187HA Cessna
172L
Fixed-wing, single engine A&J Air Sales INC
San Antonio, Texas
Standard 2023-10-12 ValidFAA registration status code V: Valid registration. All codes
N209CC Cutchens Charles G
VANS RV-6
Fixed-wing, single engine Campbell Aviation INC
Dutton, Montana
Experimental 2023-10-12 ValidFAA registration status code V: Valid registration. All codes
N4388J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Utah
Standard 2023-10-12 ValidFAA registration status code V: Valid registration. All codes
N5AU Piper
PA-28-140
Fixed-wing, single engine Crosswind Aviation of Oklahoma LLC
Stillwater, Oklahoma
Standard 2023-10-12 ValidFAA registration status code V: Valid registration. All codes
N1356U Cessna
172M
Fixed-wing, single engine N1356U LLC
Wilmington, Delaware
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N1356Y Barney Robert J
STARDUSTER SA-100
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N186SL Piper
PA-23
Fixed-wing, multi-engine Jls Property Holdings LLC
Athens, Texas
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N2429S Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N496EC American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N5130T Champion
7GCBC
Fixed-wing, single engine Infinity Aviation LLC
Piedmont, South Dakota
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N737SC Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N739QZ Cessna
172N
Fixed-wing, single engine Fly Umatilla LLC
Umatilla, Florida
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N93BS Reese David
PITTS SPECIAL S-1-C
Fixed-wing, single engine Individual owner
Maryland
Experimental 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N1336U Cessna
172M
Fixed-wing, single engine A & F Aviation Services LLC
Collierville, Tennessee
Standard 2023-10-10 ValidFAA registration status code V: Valid registration. All codes
N3921Q Cessna
172L
Fixed-wing, single engine Rawareo LLC
Warsaw, Missouri
Standard 2023-10-10 ValidFAA registration status code V: Valid registration. All codes
N5586U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-10-10 ValidFAA registration status code V: Valid registration. All codes
N9507L Cessna
172P
Fixed-wing, single engine Individual owner
California
Standard 2023-10-10 ValidFAA registration status code V: Valid registration. All codes
N13CB Cessna
172P
Fixed-wing, single engine T&W Aviation LLC
Pinehurst, Texas
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N14BL Cessna
172K
Fixed-wing, single engine Eagle Equity INC
Valparaiso, Indiana
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N20693 Cessna
172M
Fixed-wing, single engine Celestial Kinetics Flight Academy LLC
Waupaca, Wisconsin
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N2402P Piper
PA-18-150
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Multiple 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N2910X Cessna
177
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N411FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N428SX Charles R Cooper Jr
CRV4
Fixed-wing, single engine Individual owner
Georgia
Experimental 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N5339W Piper
PA-28
Fixed-wing, single engine Individual owner
Florida
Standard 2023-10-09 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 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.