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
N244RV Reeves Robert L
RV-4
Fixed-wing, single engine Individual owner
Florida
Experimental 2024-10-22 ValidFAA registration status code V: Valid registration. All codes
N6434W Piper
PA-28-140
Fixed-wing, single engine Black Scorpion Nv LLC
Elko, Nevada
Standard 2024-10-22 ValidFAA registration status code V: Valid registration. All codes
N75974 Cessna
172N
Fixed-wing, single engine 733Et LLC
Columbus, Ohio
Standard 2024-10-22 ValidFAA registration status code V: Valid registration. All codes
N1304U Cessna
172M
Fixed-wing, single engine Giving Wings Aviation LLC
Traverse City, Michigan
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N19640 Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N40058 Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
California
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N4201Q Cessna
172L
Fixed-wing, single engine Individual owner
Utah
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N54296 Cessna
172P
Fixed-wing, single engine Honcho Aircraft LLC
Crosby, Texas
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N573MW Wigley Barry
RV9A
Fixed-wing, single engine Whelan Company LLC
Hoover, Alabama
Experimental 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N6448W Piper
PA-28-140
Fixed-wing, single engine Sierra Lima Aviation LLC
Riverton, Utah
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N6592W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N6687W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N6927J Piper
PA-28-140
Fixed-wing, single engine Clear2Fly Aerospace LLC
Daytona Beach, Florida
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N77YA Piper
PA-23
Fixed-wing, multi-engine Crew Sourcing INC
Wilmington, Delaware
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N8065H Cherokee Breezy Club
BREEZY
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N8629D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N899CV Loiselle Aj/Robl D G
RV9-A
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N9667D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N15450 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N444JT Conner Leroy
RV-4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N5862L American
AA-5
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N6980Q Beech
19A
Fixed-wing, single engine Hulme Aviation LLC
Gilbert, Arizona
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N7265J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N226LL Piper
PA-28-161
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N2383W Beech
A23-19
Fixed-wing, single engine Individual owner
Washington
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N3573Q Cessna
172M
Fixed-wing, single engine Fly Lugu LLC
Westfield, Massachusetts
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N5489L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Rib Runner LLC
Sioux Falls, South Dakota
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N5709U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N6191D Piper
PA-18A
Fixed-wing, single engine Brookway Aviation LLC
Brookhaven, Mississippi
Restricted 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N6234J Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N6596W Piper
PA-28-140
Fixed-wing, single engine N6596W LLC
Derby, Kansas
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N6802X Copeland Charles H
BUSHBY MUSTANG II
Fixed-wing, single engine Co-owned owner
Indiana
Experimental 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N6939W Piper
PA-28-140
Fixed-wing, single engine Cherokee Eaglefang LLC
New Braunfels, Texas
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N693HA Piper
PA-28-140
Fixed-wing, single engine Hawkins Flight Academy LLC
Shelbyville, Tennessee
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N8342R Piper
PA-28-140
Fixed-wing, single engine Caleb Cooper 2 LLC
Pinellas Park, Florida
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N9850W Piper
PA-28-140
Fixed-wing, single engine Destination Flyer LLC
Memphis, Tennessee
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N1519V Cessna
172M
Fixed-wing, single engine Bent Prop LLC
Inver Grove, Minnesota
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N4325U Piper
PA-28-161
Fixed-wing, single engine Metro Aircraft CO
Bloomington, Minnesota
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N5306K Cessna
172P
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N53371 Cessna
172P
Fixed-wing, single engine Glidewell Aviation INC
Parkland, Florida
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N56220 Piper
PA-28-140
Fixed-wing, single engine Seashell Aviation LLC
Milton, Florida
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N5623G Cessna
172N
Fixed-wing, single engine Morris Hancock Flying Club
Morris, Minnesota
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N8307Y Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N8748M Beech
23
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N9259H Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N1165U Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N20225 Cessna
172M
Fixed-wing, single engine N20225 LLC
Pottsboro, Texas
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N202SS Schmitz Stephen M
RV 4
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N3033F Maule
MX-7-160
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N4072Z Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N5843U Piper
PA-28-140
Fixed-wing, single engine Onyx Aviation LLC
North Fort Myers, Florida
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N64674 Piper
PA-18-135
Fixed-wing, single engine Individual owner
Kentucky
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N734RD Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N91AB Jacobs Robert Lewis
RV-4
Fixed-wing, single engine Mac Services of Ocala LLC
Ocala, Florida
Experimental 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N9834W Piper
PA-28-140
Fixed-wing, single engine Exceptional Construction LLC
Greenacres, Washington
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N1215U Cessna
172M
Fixed-wing, single engine Carbon Six LLC
San Diego, California
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N295RS Snelson Richard O
THORP T18
Fixed-wing, single engine Individual owner
California
Experimental 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N400KB American Champion Aircraft
7GCBC
Fixed-wing, single engine Arrowhead Circle Leasing LLC
Cedar City, Utah
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N492WP Cessna
172N
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N517WC Piper
PA-18-150
Fixed-wing, single engine Freedom Wings LLC
Parker, Colorado
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N5943W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Utah
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N737DE Cessna
172N
Fixed-wing, single engine Sky Creation INC
Torrance, California
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N88SW Beech
B19
Fixed-wing, single engine Individual owner
Maine
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N8292E Cessna
172N
Fixed-wing, single engine P&N CORP
Marion, Iowa
Standard 2024-10-12 ValidFAA registration status code V: Valid registration. All codes
N114DK Socata
TB-20 TRINIDAD
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Experimental 2024-10-11 ValidFAA registration status code V: Valid registration. All codes
N3350Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-10-11 ValidFAA registration status code V: Valid registration. All codes
N44505 Rawdon
T1
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-11 ValidFAA registration status code V: Valid registration. All codes
N5877L American
AA-5
Fixed-wing, single engine Flyboys Aviation LLC
Sioux City, Iowa
Standard 2024-10-11 ValidFAA registration status code V: Valid registration. All codes
N733TQ Cessna
172N
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2024-10-11 ValidFAA registration status code V: Valid registration. All codes
N105JW Gray Jack W
RV 4
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N5268K Cessna
172P
Fixed-wing, single engine Sorbi Aviation INC
El Cajon, California
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N563FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N7328J Piper
PA-28-140
Fixed-wing, single engine Nightline Air LLC
Saratoga Springs, Utah
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N733FP Cessna
172N
Fixed-wing, single engine Sorbi Aviation INC
El Cajon, California
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N733UC Cessna
172N
Fixed-wing, single engine Sorbi Aviation INC
El Cajon, California
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N7945L Beech
A23-19
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N84050 Cessna
172K
Fixed-wing, single engine Alpenglow Air 2 LLC
Anchorage, Alaska
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N9496D Piper
PA-18A 150
Fixed-wing, single engine Cavu Clearing LLC
Center Harbor, New Hampshire
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N3133T Cessna
177
Fixed-wing, single engine Giddy Up Aviation LLC
Ada, Oklahoma
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N5289S Piper
PA-28-140
Fixed-wing, single engine Individual owner
West Virginia
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N6050W Piper
PA-28-140
Fixed-wing, single engine Landoll Aero LLC
O Fallon, Illinois
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N6437R Piper
PA-28-140
Fixed-wing, single engine Moyer Aviation INC
Ulysses, Kansas
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N8291J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
New Mexico
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N1422X Piper
PA-28-140
Fixed-wing, single engine Dt'S Aviation LLC
Garden City, Kansas
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N241PL Cessna
172P
Fixed-wing, single engine Airplane and Drone Flight Instruction LLC
Orlando, Florida
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N32AH Amsden/Hair
THORP T-18
Fixed-wing, single engine Lai LLC
Flowood, Mississippi
Experimental 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N4070Z Piper
PA-18-150
Fixed-wing, single engine N333Bc LLC
Franktown, Colorado
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N54223 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N61573 Cessna
172M
Fixed-wing, single engine Withheld at owner's request
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N9445H Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N13099 Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Multiple 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N6724J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N73KL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N90JA Andrews John E
ANDREWS RV-4
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N9633H Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N9659W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N9714D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N15571 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-10-05 ValidFAA registration status code V: Valid registration. All codes
N3861P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-05 ValidFAA registration status code V: Valid registration. All codes
N5182E Cessna
172N
Fixed-wing, single engine Withheld at owner's request
Standard 2024-10-05 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.