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
N9809G Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2018-01-05 ValidFAA registration status code V: Valid registration. All codes
N9823U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Florida
Standard 2018-01-05 ValidFAA registration status code V: Valid registration. All codes
N1366P Piper
PA-23-150
Fixed-wing, multi-engine Individual owner
Ohio
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N46130 Cessna
172I
Fixed-wing, single engine Co-owned owner
California
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N6773J Piper
PA-28-140
Fixed-wing, single engine Tuskegee Airmen National Historical Museum INC
Detroit, Michigan
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N8646D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Arizona
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N9567V Cessna
172M
Fixed-wing, single engine Bdc Aero LLC
Miami, Texas
Standard 2018-01-04 ExpiredFAA registration status code 29: Registration expired, pending cancellation. All codes
N54733 Cessna
172P
Fixed-wing, single engine Gofastpilots LLC
Roswell, New Mexico
Standard 2018-01-03 ValidFAA registration status code V: Valid registration. All codes
N2527P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-01-02 ValidFAA registration status code V: Valid registration. All codes
N26670 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2018-01-02 ValidFAA registration status code V: Valid registration. All codes
N9984V Cessna
172M
Fixed-wing, single engine Valley Drug of Malta INC
Malta, Montana
Standard 2018-01-02 ValidFAA registration status code V: Valid registration. All codes
N43493 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-12-29 ValidFAA registration status code V: Valid registration. All codes
N15203 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2017-12-28 ValidFAA registration status code V: Valid registration. All codes
N7176B Hacecky Floyd
RV-6
Fixed-wing, single engine Withheld at owner's request
Experimental 2017-12-28 ValidFAA registration status code V: Valid registration. All codes
N8081G Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-12-28 ValidFAA registration status code V: Valid registration. All codes
N838DH Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2017-12-28 ValidFAA registration status code V: Valid registration. All codes
N1687P Piper
PA-22-150
Fixed-wing, single engine Sofia de Venecia LLC
Southampton, New York
Standard 2017-12-27 ValidFAA registration status code V: Valid registration. All codes
N26792 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-12-27 ValidFAA registration status code V: Valid registration. All codes
N2905P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2017-12-27 ValidFAA registration status code V: Valid registration. All codes
N737GZ Cessna
172N
Fixed-wing, single engine Sauk Valley Aviation INC
Sterling, Illinois
Standard 2017-12-27 ValidFAA registration status code V: Valid registration. All codes
N9081L Champion
7GCAA
Fixed-wing, single engine Co-owned owner
California
Multiple 2017-12-27 ValidFAA registration status code V: Valid registration. All codes
N12821 Cessna
172M
Fixed-wing, single engine Individual owner
Missouri
Standard 2017-12-26 ValidFAA registration status code V: Valid registration. All codes
N2392P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Montana
Standard 2017-12-26 ValidFAA registration status code V: Valid registration. All codes
N6657W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oregon
Standard 2017-12-26 ValidFAA registration status code V: Valid registration. All codes
N79893 Cessna
172K
Fixed-wing, single engine Panjab Aviation
Las Vegas, Nevada
Standard 2017-12-26 ValidFAA registration status code V: Valid registration. All codes
N30142 Cessna
177
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-12-22 ValidFAA registration status code V: Valid registration. All codes
N92934 Cessna
172M
Fixed-wing, single engine Service Oriented Aviation Readiness (Soar)
Bolivar, Missouri
Standard 2017-12-22 ValidFAA registration status code V: Valid registration. All codes
N13364 Cessna
172M
Fixed-wing, single engine Cornerstone Aircraft Sales INC
Wonder Lake, Illinois
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N222US Cessna
172N
Fixed-wing, single engine Ticoair LLC
Wilmington, Delaware
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N52082 Cessna
172P
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N82J Holcomb Jack C
PITTS S1C
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N20402 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2017-12-20 ValidFAA registration status code V: Valid registration. All codes
N2432H Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-12-20 ValidFAA registration status code V: Valid registration. All codes
N997AB Robinson Helicopter
R22 BETA
Helicopter Individual owner
California
Standard 2017-12-20 ValidFAA registration status code V: Valid registration. All codes
N1123W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Montana
Standard 2017-12-19 ValidFAA registration status code V: Valid registration. All codes
N2364M Piper
PA-12
Fixed-wing, single engine Individual owner
Pennsylvania
Multiple 2017-12-19 ValidFAA registration status code V: Valid registration. All codes
N269NE Cessna
172N
Fixed-wing, single engine Oro LLC
Tilden, Nebraska
Standard 2017-12-19 ValidFAA registration status code V: Valid registration. All codes
N9658D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-12-19 ValidFAA registration status code V: Valid registration. All codes
N5374J Cessna
172N
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-12-18 ValidFAA registration status code V: Valid registration. All codes
N107RV Mussen Gary L
RV-4
Fixed-wing, single engine Withheld at owner's request
Experimental 2017-12-15 ValidFAA registration status code V: Valid registration. All codes
N20387 Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-12-15 ValidFAA registration status code V: Valid registration. All codes
N83473 Piper
PA-18-150
Fixed-wing, single engine Individual owner
New York
Standard 2017-12-15 ValidFAA registration status code V: Valid registration. All codes
N315AT John G Hess
AT-5
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-12-13 ValidFAA registration status code V: Valid registration. All codes
N3783Z Piper
PA-18
Fixed-wing, single engine Individual owner
California
Standard 2017-12-13 ValidFAA registration status code V: Valid registration. All codes
N73209 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-12-13 ValidFAA registration status code V: Valid registration. All codes
N9526L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-12-13 ValidFAA registration status code V: Valid registration. All codes
N5205D Cessna
172N
Fixed-wing, single engine Alleghany Flying Club INC
Hyndman, Pennsylvania
Standard 2017-12-11 ValidFAA registration status code V: Valid registration. All codes
N8042D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
California
Experimental 2017-12-11 ValidFAA registration status code V: Valid registration. All codes
N172DM Cessna
172N
Fixed-wing, single engine Individual owner
Nebraska
Standard 2017-12-08 ValidFAA registration status code V: Valid registration. All codes
N2727G Champion
7GCBC
Fixed-wing, single engine Tetrad CORP DBA
Lusk, Wyoming
Standard 2017-12-08 ValidFAA registration status code V: Valid registration. All codes
N7207F Piper
PA-28-140
Fixed-wing, single engine Landmark Title INC
Clovis, New Mexico
Standard 2017-12-08 ValidFAA registration status code V: Valid registration. All codes
N734ZA Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-12-08 ValidFAA registration status code V: Valid registration. All codes
N13296 Cessna
172M
Fixed-wing, single engine T31 Fliers LLC
Prosper, Texas
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N199GG Cohen Barry Lee
GLASS GOOSE
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N20472 Cessna
172M
Fixed-wing, single engine N20472 LLC
Opa Locka, Florida
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N3291E Cessna
172N
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N4429Q Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N5398Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N55236 Cessna
172P
Fixed-wing, single engine Bobnal LLC
Conway, South Carolina
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N6854H Cessna
172M
Fixed-wing, single engine N6854H LLC
Opa Locka, Florida
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N7122B Piper
PA-22-150
Fixed-wing, single engine Cgu Aviation LLC
Naples, Florida
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N737DL Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N84455 Cessna
172K
Fixed-wing, single engine Green Castle Aero Club
Oxford, Iowa
Standard 2017-12-07 ValidFAA registration status code V: Valid registration. All codes
N1293F Cessna
172N
Fixed-wing, single engine T-Craft Aero Club
Nampa, Idaho
Standard 2017-12-06 ValidFAA registration status code V: Valid registration. All codes
N43544 Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Jersey
Standard 2017-12-06 ValidFAA registration status code V: Valid registration. All codes
N5264K Cessna
172P
Fixed-wing, single engine Rmg Aviation LLC
Newark, Delaware
Standard 2017-12-06 ValidFAA registration status code V: Valid registration. All codes
N6007W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-12-06 ValidFAA registration status code V: Valid registration. All codes
N6885H Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2017-12-06 ValidFAA registration status code V: Valid registration. All codes
N95270 Piper
PA-28-140
Fixed-wing, single engine Get Away 1 LLC
St George, Utah
Standard 2017-12-06 ValidFAA registration status code V: Valid registration. All codes
N1317R Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2017-12-05 ValidFAA registration status code V: Valid registration. All codes
N83271 Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2017-12-05 ValidFAA registration status code V: Valid registration. All codes
N8415R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2017-12-05 ValidFAA registration status code V: Valid registration. All codes
N9183K Koinzan Walter L
SUPER STOL II
Fixed-wing, single engine Koinzan Flying Service INC
Elgin, Nebraska
Experimental 2017-12-05 ValidFAA registration status code V: Valid registration. All codes
N3884Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-12-04 ValidFAA registration status code V: Valid registration. All codes
N738TB Cessna
172N
Fixed-wing, single engine Sorbi Aviation INC
El Cajon, California
Standard 2017-12-04 ValidFAA registration status code V: Valid registration. All codes
N283P Piper
PA-28-140
Fixed-wing, single engine Wings Flight Group LLC
Las Vegas, Nevada
Standard 2017-12-01 ValidFAA registration status code V: Valid registration. All codes
N1367P Piper
PA-23
Fixed-wing, multi-engine Buzzard Air Service LLC
Carleton, Michigan
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N333KM Macdonald John A
GLASAIR SH 2R
Fixed-wing, single engine Individual owner
Indiana
Experimental 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N40023 Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N4105Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Florida
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N4763D Cessna
172N
Fixed-wing, single engine Individual owner
Maryland
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N56786 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N86FP Cessna
172N
Fixed-wing, single engine Gateway Flight Center LLC
Port Lavaca, Texas
Restricted 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N9577U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Soluserv LLC
Caldwell, Texas
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N2632J Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-11-29 ValidFAA registration status code V: Valid registration. All codes
N2863M Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-11-29 ValidFAA registration status code V: Valid registration. All codes
N338CA Cessna
172N
Fixed-wing, single engine Lincoln Skyways INC
Lincoln, California
Standard 2017-11-29 ValidFAA registration status code V: Valid registration. All codes
N5969D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-11-29 ValidFAA registration status code V: Valid registration. All codes
N7074K Piper
PA-20
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-11-29 ValidFAA registration status code V: Valid registration. All codes
N1922V Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N3903P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N5025F Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Nebraska
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N5043W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N737HY Cessna
172N
Fixed-wing, single engine Seven 4 Zulu LLC
San Diego, California
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N83368 Piper
PA-18-150
Fixed-wing, single engine High Mountain Air LLC
Missoula, Montana
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N9468H Cessna
172M
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N44027 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-11-27 ValidFAA registration status code V: Valid registration. All codes
N734BW Cessna
172N
Fixed-wing, single engine Superior Aviation Gateway LLC
Tampa, Florida
Standard 2017-11-27 ValidFAA registration status code V: Valid registration. All codes
N15499 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-11-21 ValidFAA registration status code V: Valid registration. All codes
N2319P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2017-11-20 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.