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
N5119H Piper
PA-14
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N636P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Iowa
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N64465 Cessna
172M
Fixed-wing, single engine N64465 LLC
Fort Lauderdale, Florida
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N70KP Cessna
172K
Fixed-wing, single engine Individual owner
Kansas
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N734MT Cessna
172N
Fixed-wing, single engine Tca Equities LLC
Advance, North Carolina
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N7489D Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Multiple 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N811DH Hull Dwayne E
SH-2
Fixed-wing, single engine Withheld at owner's request
Experimental 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N99100 Cessna
172P
Fixed-wing, single engine Sterling Flight Training LLC
Jacksonville, Florida
Standard 2025-11-07 ValidFAA registration status code V: Valid registration. All codes
N244SD Piper
PA-28-140
Fixed-wing, single engine Perazzo Enterprises INC
Brookeland, Texas
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N3613P Piper
PA-22-150
Fixed-wing, single engine Little Bear Air LLC
Lubbock, Texas
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N370AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Maine
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N3995K Piper
PA-28-140
Fixed-wing, single engine Kennedy Daniel P
Phoenix, Arizona
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N46198 Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N6746J Piper
PA-28-140
Fixed-wing, single engine On Short Final LLC
Marion, North Carolina
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N96626 Cessna
172P
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2025-11-06 ValidFAA registration status code V: Valid registration. All codes
N172AM Cessna
172M
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N21167 Piper
PA-28-161
Fixed-wing, single engine Tidewater Aviation LLC
Easton, Maryland
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N22689 Cessna
172M
Fixed-wing, single engine Ridge View Aviation LLC
Napanoch, New York
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N2269Q Piper
PA-28-140
Fixed-wing, single engine N2269Q LLC
West Palm Beach, Florida
Special flight permit 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N284HG Piper
PA-28-161
Fixed-wing, single engine Compass Rose 4 LLC
Austin, Texas
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N2858Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N32067 Piper
PA-28-151
Fixed-wing, single engine Individual owner
New York
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N4116J Piper
PA-28-140
Fixed-wing, single engine Kerns Brothers LLC
Boardman, Oregon
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N55881 Piper
PA-28-140
Fixed-wing, single engine Phoenix Kingdom LLC
Washington, District of Columbia
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N5604W Piper
PA-28-150
Fixed-wing, single engine Hustedde Trucking LLC
Fayette, Missouri
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N877DA Piper
PA-28-140
Fixed-wing, single engine West Prairie Aircraft LLC
Weiner, Arkansas
Standard 2025-11-05 ValidFAA registration status code V: Valid registration. All codes
N160DB Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Montana
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N66EB Berry Earl
PA-18 SW
Fixed-wing, single engine Aj Aviation Services LLC
Midland, Texas
Experimental 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N7258D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N768AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Florida
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N84HW Wuensche Helmut K
GLASAIR
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N91042 Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N9702L Cessna
172P
Fixed-wing, single engine Flying Dreams One LLC
Louisville, Kentucky
Standard 2025-11-04 ValidFAA registration status code V: Valid registration. All codes
N2914B Piper
PA-28-161
Fixed-wing, single engine White and Blue Wings LLC
Oakland Park, Florida
Standard 2025-11-03 ValidFAA registration status code V: Valid registration. All codes
N522DM Mccallister Donald E
RV-6A
Fixed-wing, single engine Old Glory Flying LLC
Raton, New Mexico
Experimental 2025-11-03 ValidFAA registration status code V: Valid registration. All codes
N734LA Cessna
172N
Fixed-wing, single engine Kool Wings Leasing LLC
Indianapolis, Indiana
Standard 2025-11-03 ValidFAA registration status code V: Valid registration. All codes
N8XF Schlappi Dale
VANS RV8
Fixed-wing, single engine Individual owner
New Hampshire
Experimental 2025-11-03 ValidFAA registration status code V: Valid registration. All codes
N4517R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-11-02 ValidFAA registration status code V: Valid registration. All codes
N6514W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Utah
Standard 2025-11-02 ValidFAA registration status code V: Valid registration. All codes
N121LC Cast D/Lammers J
VANS RV6A
Fixed-wing, single engine Jolisea Wings LLC
Palm Bay, Florida
Experimental 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N150AB Koliber
PZL-150A
Fixed-wing, single engine Purple Sage Aero LLC
Leonardtown, Maryland
Standard 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N1660V Cessna
172M
Fixed-wing, single engine Odegaard Wings INC
Kindred, North Dakota
Standard 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N3858Q Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N4748T Morris Lloyd C
VANS RV-6
Fixed-wing, single engine Pointfly LLC
Helena, Montana
Experimental 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N575RV Hoover Thomas H
VANS AIRCRAFT RV-7A
Fixed-wing, single engine Individual owner
New York
Experimental 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N7042U Adams Charles V Jr
ADAMS ACRO SPORT
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N91PA Cessna
172M
Fixed-wing, single engine High Wing Air LLC
Arnold, Missouri
Standard 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N9711W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Florida
Standard 2025-11-01 ValidFAA registration status code V: Valid registration. All codes
N2143T Piper
PA-28-140
Fixed-wing, single engine Rahim Shamim INC
Jacksonville, North Carolina
Standard 2025-10-31 ValidFAA registration status code V: Valid registration. All codes
N4200H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-10-31 ValidFAA registration status code V: Valid registration. All codes
N4320A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2025-10-31 ValidFAA registration status code V: Valid registration. All codes
N79209 Cessna
172K
Fixed-wing, single engine Prp Aviation LLC
Ocala, Florida
Standard 2025-10-31 ValidFAA registration status code V: Valid registration. All codes
N8958 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2025-10-31 ValidFAA registration status code V: Valid registration. All codes
N4069Z Piper
PA-18-150
Fixed-wing, single engine S&P Aviation LLC
Albuquerque, New Mexico
Multiple 2025-10-30 ValidFAA registration status code V: Valid registration. All codes
N4885G Cessna
172N
Fixed-wing, single engine S&P Aviation LLC
Albuquerque, New Mexico
Standard 2025-10-30 ValidFAA registration status code V: Valid registration. All codes
N5840U Piper
PA-28-140
Fixed-wing, single engine Tall Timber Flying Service LLC
Kalispell, Montana
Standard 2025-10-30 ValidFAA registration status code V: Valid registration. All codes
N733TC Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2025-10-30 ValidFAA registration status code V: Valid registration. All codes
N821BF Thorman Frank
RV-9A
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2025-10-30 ValidFAA registration status code V: Valid registration. All codes
N9714U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-10-30 ValidFAA registration status code V: Valid registration. All codes
N1337R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
New York
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N15CZ Danila Charles S Sr
COZY
Fixed-wing, single engine Safe Aero LLC
Fort Myers, Florida
Experimental 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N1712Q Cessna
150L
Fixed-wing, single engine Mischief Makers LLC
Tuscaloosa, Alabama
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N2073E Cessna
172N
Fixed-wing, single engine Great Lakes Air Ventures LLC
Mason, Michigan
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N26743 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N32082 Piper
PA-28-151
Fixed-wing, single engine 7550G LLC
Birmingham, Michigan
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N4512R Piper
PA-28-140
Fixed-wing, single engine Elder Abuse Air Force
Rcho Sta Marg, California
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N4727D Cessna
172N
Fixed-wing, single engine 4 Leaf Clover Leasing LLC
Murrieta, California
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N625DW Cessna
172P
Fixed-wing, single engine Eyes Skyward Aviation LLC
Philadelphia, Pennsylvania
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N8471R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-10-29 ValidFAA registration status code V: Valid registration. All codes
N3328E Cessna
172N
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N33545 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N33691 Piper
PA-28-140
Fixed-wing, single engine Wide Open Aviation LLC
Kalispell, Montana
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N4391R Cessna
172M
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N5111R Beech
B19
Fixed-wing, single engine Alpine Aviation LLC
Oasis, Idaho
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N5268H Cessna
172M
Fixed-wing, single engine Grander Aviation LLC
Panama City Beach, Florida
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N5977Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N7102L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N78338 Cessna
172K
Fixed-wing, single engine Mbh Aviation LLC
Tulalip, Washington
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N84333 Cessna
172K
Fixed-wing, single engine Backup Enterprises LLC
Conway Springs, Kansas
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N9752U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Bg Aero LTD CO
Coyle, Oklahoma
Standard 2025-10-28 ValidFAA registration status code V: Valid registration. All codes
N1104M Cessna
172L
Fixed-wing, single engine Carrolls Auto & Aircraft LLC
Muncie, Indiana
Standard 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N216MT Avions Pierre Robin
PIERRE ROBIN R2160
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N24155 Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N41813 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Georgia
Multiple 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N55428 Piper
PA-28-140
Fixed-wing, single engine Flight Gear Aviation LLC
Pickerington, Ohio
Standard 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N72553 Piper
PA-23
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N79204 Cessna
172K
Fixed-wing, single engine Nexgen Aviation LLC
Ennis, Texas
Standard 2025-10-27 ValidFAA registration status code V: Valid registration. All codes
N7444D Piper
PA-22-150
Fixed-wing, single engine Rups Adventure North LLC
Arbor Vitae, Wisconsin
Standard 2025-10-26 ValidFAA registration status code V: Valid registration. All codes
N136CH Hall Charles A
VANS RV4
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N211WF Foster William E
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N31868 Maule
MX-7-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N320ES Dibenedetto Vincent A
LANCAIR 320
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N329JF Cessna
172M
Fixed-wing, single engine J F Aviation INC
Joliet, Illinois
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N3689P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N4897G Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N55HN D L Ross
PITTS SPECIAL
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N5949U Piper
PA-28-140
Fixed-wing, single engine 5949 INC
Boulder City, Nevada
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N6262X Robinson Helicopter
R22
Helicopter Individual owner
Kentucky
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N63681 Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2025-10-24 ValidFAA registration status code V: Valid registration. All codes
N6811 Piper
PA-22-150
Fixed-wing, single engine Dinnerbell Farms LLC
Eden, Wisconsin
Standard 2025-10-24 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.