The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 9, 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
N299JB Bohannon James A Jr
RV-6
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2021-08-14 ValidFAA registration status code V: Valid registration. All codes
N29YC Piper
PA-18-150
Fixed-wing, single engine AG One Aviation LLC
Villa Grove, Illinois
Standard 2021-08-14 ValidFAA registration status code V: Valid registration. All codes
N320JS Seela Joel Jay
MAGNUM
Fixed-wing, single engine Individual owner
Arizona
Experimental 2021-08-14 ValidFAA registration status code V: Valid registration. All codes
N44773 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2021-08-14 ValidFAA registration status code V: Valid registration. All codes
N7063Q Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2021-08-14 ValidFAA registration status code V: Valid registration. All codes
N104MN Neal H M
NEAL RV-4
Fixed-wing, single engine Carpenter Jon Jay
Granada Hills, California
Experimental 2021-08-13 ValidFAA registration status code V: Valid registration. All codes
N121ER Socata
TB 9 TAMPICO
Fixed-wing, single engine Freedom Aviation LLC
Dover, Delaware
Standard 2021-08-13 ValidFAA registration status code V: Valid registration. All codes
N550FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2021-08-13 ValidFAA registration status code V: Valid registration. All codes
N7128Q Cessna
172L
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2021-08-13 ValidFAA registration status code V: Valid registration. All codes
N130KW Jakel Helmut
RV-9A
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N1486T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N3774Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N4255Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N5298T Piper
PA-28-140
Fixed-wing, single engine Pleasant Valley Aviation INC
Bellefonte, Pennsylvania
Standard 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N611FT Piper
PA-28-161
Fixed-wing, single engine Coco Aircraft INC
Merritt Island, Florida
Standard 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N6575W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N104GP Bouley Joseph L Jr
GLASTAR
Fixed-wing, single engine Individual owner
Colorado
Experimental 2021-08-11 ValidFAA registration status code V: Valid registration. All codes
N5131W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-08-11 ValidFAA registration status code V: Valid registration. All codes
N84193 Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-08-11 ValidFAA registration status code V: Valid registration. All codes
N35546 Cessna
172I
Fixed-wing, single engine Independent Aviation Services LLC
Sachse, Texas
Standard 2021-08-10 ValidFAA registration status code V: Valid registration. All codes
N442DB Burgess Dale
MURPHY REBEL
Fixed-wing, single engine Withheld at owner's request
Experimental 2021-08-10 ValidFAA registration status code V: Valid registration. All codes
N118ER Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
Wyoming
Standard 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N32004 Piper
PA-28-151
Fixed-wing, single engine Priceless Pleasures LLC
Jordan, Minnesota
Standard 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N352G Grimes Andrew D
ANDERSON KINGFISHER
Fixed-wing, single engine Aura LLC
Zeeland, Michigan
Experimental 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N3606E Cessna
172N
Fixed-wing, single engine Individual owner
North Dakota
Standard 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N7587R Piper
PA-28-140
Fixed-wing, single engine Fca Flight Training LLC
Washington C H, Ohio
Standard 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N7602G Cessna
172L
Fixed-wing, single engine Airborne LLC
Wilmington, Delaware
Standard 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N9659L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N34CZ Brush Chares Elwyn
RV-4
Fixed-wing, single engine N34Cz LLC
Port Saint Lucie, Florida
Experimental 2021-08-07 ValidFAA registration status code V: Valid registration. All codes
N88PY Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Restricted 2021-08-07 ValidFAA registration status code V: Valid registration. All codes
N91PM Cessna
172M
Fixed-wing, single engine Runrich LLC
Newport News, Virginia
Standard 2021-08-07 ValidFAA registration status code V: Valid registration. All codes
N94BS Switzer Robert W
RV-4
Fixed-wing, single engine Co-owned owner
Pennsylvania
Experimental 2021-08-07 ValidFAA registration status code V: Valid registration. All codes
N6915H Cessna
172M
Fixed-wing, single engine 2Gbs LLC
Wilder, Idaho
Standard 2021-08-06 ValidFAA registration status code V: Valid registration. All codes
N5249E Cessna
172N
Fixed-wing, single engine Alexandria Aviation INC
Alexandria, Minnesota
Standard 2021-08-05 ValidFAA registration status code V: Valid registration. All codes
N7439G Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-08-05 ValidFAA registration status code V: Valid registration. All codes
N84092 Cessna
172K
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-08-05 ValidFAA registration status code V: Valid registration. All codes
N9720P Piper
PA-18-150
Fixed-wing, single engine Talon Air Service INC
Soldotna, Alaska
Standard 2021-08-05 ValidFAA registration status code V: Valid registration. All codes
N117DM Beech
19A
Fixed-wing, single engine Applied Professional Solutions LLP
Jacksonville, Florida
Standard 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N123VA Maule
MX-7-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N12460 Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N5062R Cessna
172M
Fixed-wing, single engine Richland County Finance Department
Columbia, South Carolina
Standard 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N612WT Piper
PA-28-161
Fixed-wing, single engine Plane Leasing LLC
Tempe, Arizona
Standard 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N8317G Cessna
172N
Fixed-wing, single engine Eagle Simulator LLC
Lake Oswego, Oregon
Restricted 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N84299 Cessna
172K
Fixed-wing, single engine Phoenix Aviation Holdings LLC
Crystal Beach, Florida
Standard 2021-08-04 ValidFAA registration status code V: Valid registration. All codes
N124WD American Champion Aircraft
7GCAA
Fixed-wing, single engine Kcsi Aerial Patrol INC
Bakersfield, California
Standard 2021-08-03 ValidFAA registration status code V: Valid registration. All codes
N56239 Piper
PA-28-140
Fixed-wing, single engine Hobart Aviation INC
Akron, Ohio
Standard 2021-08-03 ValidFAA registration status code V: Valid registration. All codes
N7168R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2021-08-03 ValidFAA registration status code V: Valid registration. All codes
N9688P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2021-08-03 ValidFAA registration status code V: Valid registration. All codes
N2712M Piper
PA-12
Fixed-wing, single engine Cardinal Adventures LLC
Green Bay, Wisconsin
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N312TD Cessna
172M
Fixed-wing, single engine Aircom Nwa LLC
Siloam Springs, Arkansas
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N5360J Cessna
172N
Fixed-wing, single engine Fly Montana LLC
Miles City, Montana
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N543CP Ponnequin Craig
RV-4
Fixed-wing, single engine Co-owned owner
Idaho
Experimental 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N7681G Cessna
172L
Fixed-wing, single engine Compass Aviation INC
Shelby, North Carolina
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N80380 Cessna
172M
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N8181N Piper
PA-28-140
Fixed-wing, single engine Bald Eagle Flying Club
Falmouth, Maine
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N91218 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N9709K Piper
PA-28-140
Fixed-wing, single engine Lkn Cherokee LLC
Mooresville, North Carolina
Standard 2021-08-02 ValidFAA registration status code V: Valid registration. All codes
N1360E Cessna
172N
Fixed-wing, single engine Tuskegee Airmen National Historical Museum INC
Detroit, Michigan
Standard 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N5001W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N64096 Cessna
172M
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N663RV Balone Harmon T
BALONE RV-6
Fixed-wing, single engine Individual owner
Alabama
Experimental 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N737KJ Cessna
172N
Fixed-wing, single engine Red-Tailed Hawks Aviation Academy
Mukilteo, Washington
Standard 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N9705D Piper
PA-22-160
Fixed-wing, single engine Individual owner
California
Standard 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N998SE Cessna
172P
Fixed-wing, single engine Co-owned owner
Florida
Multiple 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N2669P Piper
PA-18-150
Fixed-wing, single engine Legends LLC
Willow, Alaska
Standard 2021-07-30 ValidFAA registration status code V: Valid registration. All codes
N51931 Cessna
172P
Fixed-wing, single engine Individual owner
Guam
Standard 2021-07-30 ValidFAA registration status code V: Valid registration. All codes
N8179H Piper
PA-28-161
Fixed-wing, single engine Sam Air LLC
Daphne, Alabama
Standard 2021-07-30 ValidFAA registration status code V: Valid registration. All codes
N9151L Champion
7GCBC
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-07-30 ValidFAA registration status code V: Valid registration. All codes
N972PM Cessna
172M
Fixed-wing, single engine Np Aviation INC
Naguabo, Puerto Rico
Restricted 2021-07-30 ValidFAA registration status code V: Valid registration. All codes
N1172M Cessna
172K
Fixed-wing, single engine Individual owner
North Dakota
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N1799T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N2088V American Champion Aircraft
7GCAA
Fixed-wing, single engine Mad Scientist Aviation LLC
Wilmington, Delaware
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N4160J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N5516U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N7092F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Illinois
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N711WB Barton
SYLKIE 1
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N78564 Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N7911L Beech
A23-19
Fixed-wing, single engine Individual owner
Iowa
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N83130 Robinson Helicopter
R22 BETA
Helicopter Withheld at owner's request
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N9447H Cessna
172M
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2021-07-29 ValidFAA registration status code V: Valid registration. All codes
N1135F Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N19643 Cessna
172L
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N2203M Piper
PA-28-161
Fixed-wing, single engine Lane Aviation Academy
Eugene, Oregon
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N4103P Piper
PA-23-160
Fixed-wing, multi-engine Co-owned owner
Florida
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N5210F Cessna
172N
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N7153Z Piper
PA-18-150
Fixed-wing, single engine Carson Cubs LLC
Yelm, Washington
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N737ZJ Cessna
172N
Fixed-wing, single engine Lazy Eights Holdings LLC
Greenwood, Indiana
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N738DJ Cessna
172N
Fixed-wing, single engine Hermes Aviation LLC
Greenville, South Carolina
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N8120J Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N84896 Cessna
172K
Fixed-wing, single engine An Aircraft LLC
Springfield, Missouri
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N9161H Cessna
172M
Fixed-wing, single engine Air Athens LLC
Athens, Georgia
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N9400K Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N9522W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-07-28 ValidFAA registration status code V: Valid registration. All codes
N1348R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N1377R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N20377 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N4201H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N4312Y Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N4470A Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N466AK Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 9, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.