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
N5102T Champion
7GCBC
Fixed-wing, single engine Pettis Aviation LLC
Atlantic, Iowa
Standard 2019-04-05 ValidFAA registration status code V: Valid registration. All codes
N1064X Piper
PA-28-151
Fixed-wing, single engine Active Pilot INC
Van Nuys, California
Standard 2019-04-04 ValidFAA registration status code V: Valid registration. All codes
N2549Q Piper
PA-28-161
Fixed-wing, single engine Fly Legacy Planes LLC
Philadelphia, Pennsylvania
Standard 2019-04-04 ValidFAA registration status code V: Valid registration. All codes
N29617 Cessna
177
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-04-04 ValidFAA registration status code V: Valid registration. All codes
N8734D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2019-04-04 ValidFAA registration status code V: Valid registration. All codes
N7043R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2019-04-03 ValidFAA registration status code V: Valid registration. All codes
N738KA Cessna
172N
Fixed-wing, single engine Flying Aces Aero Fleet INC
Guyton, Georgia
Standard 2019-04-03 ValidFAA registration status code V: Valid registration. All codes
N9143D Piper
PA-18-150
Fixed-wing, single engine Hellberg Farms LLC
Lowden, Washington
Multiple 2019-04-03 ValidFAA registration status code V: Valid registration. All codes
N12679 Cessna
172M
Fixed-wing, single engine Garuda Aviation INC
Miami, Florida
Standard 2019-04-02 ValidFAA registration status code V: Valid registration. All codes
N5145E Cessna
172N
Fixed-wing, single engine Sierra Pacific Aviation
Willits, California
Standard 2019-04-02 ValidFAA registration status code V: Valid registration. All codes
N6796H Cessna
172M
Fixed-wing, single engine Amelia Reid Aviation LLC
San Jose, California
Standard 2019-04-02 ValidFAA registration status code V: Valid registration. All codes
N9788U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Kentucky
Standard 2019-04-02 ValidFAA registration status code V: Valid registration. All codes
N19805 Cessna
172M
Fixed-wing, single engine C & R Leasing LLC
Fairbanks, Alaska
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N38809 Piper
PA-28-140
Fixed-wing, single engine Somerset Air Service INC
Bedminster, New Jersey
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N3958P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N4325R Cessna
172M
Fixed-wing, single engine Garuda Aviation INC
Miami, Florida
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N4345G Piper
PA-28-161
Fixed-wing, single engine G & M Aircraft INC
Wheat Ridge, Colorado
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N4801G Cessna
172N
Fixed-wing, single engine Frederick Aero Development INC
Murrieta, California
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N53630 Cessna
172P
Fixed-wing, single engine Arlington Flight Services INC
Arlington, Washington
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N6408A Fox Myron E
RV-6
Fixed-wing, single engine Specialty Aero LLC
Creswell, Oregon
Experimental 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N8024N Piper
PA-28-140
Fixed-wing, single engine All American Aviation Services INC
Fayetteville, North Carolina
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N8145D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N99725 Cessna
172P
Fixed-wing, single engine Holladay Aviation LLC
Jacksonville, Florida
Standard 2019-04-01 ValidFAA registration status code V: Valid registration. All codes
N2361L Beech
23
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N41805 Bellanca
7ECA
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N5705W Piper
PA-28-160
Fixed-wing, single engine Smart Avionics INC
Marietta, Pennsylvania
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N712P Piper
PA-12
Fixed-wing, single engine Jason Schwitters Farm INC
Clara City, Minnesota
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N80279 Cessna
172M
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N83386 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N9874G Cessna
172L
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N1531J Piper
PA-28-140
Fixed-wing, single engine Perception Prime LLC
Beverly, Massachusetts
Standard 2019-03-29 ValidFAA registration status code V: Valid registration. All codes
N20236 Cessna
172M
Fixed-wing, single engine Safety In Motion Flight Center INC
Puyallup, Washington
Standard 2019-03-29 ValidFAA registration status code V: Valid registration. All codes
N3930P Piper
PA-22
Fixed-wing, single engine Individual owner
Texas
Standard 2019-03-29 ValidFAA registration status code V: Valid registration. All codes
N2753C Grant W Chapman
CS-2B
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2019-03-28 ValidFAA registration status code V: Valid registration. All codes
N3892Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Multiple 2019-03-28 ValidFAA registration status code V: Valid registration. All codes
N2308E Cessna
172N
Fixed-wing, single engine Pavco INC
Gig Harbor, Washington
Standard 2019-03-27 ValidFAA registration status code V: Valid registration. All codes
N3196T Cessna
177
Fixed-wing, single engine Nicholson Perry R
Merlin, Oregon
Standard 2019-03-27 ValidFAA registration status code V: Valid registration. All codes
N345MP Bausch Wayne A
RV-4
Fixed-wing, single engine Individual owner
Missouri
Experimental 2019-03-27 ValidFAA registration status code V: Valid registration. All codes
N46243 Interstate
S-1B1
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-03-27 ValidFAA registration status code V: Valid registration. All codes
N474AA Cessna
172M
Fixed-wing, single engine Withheld at owner's request
Standard 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N61547 Cessna
172M
Fixed-wing, single engine Frontline World Missions INC
Jacksonville, Texas
Standard 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N6232D Cessna
172N
Fixed-wing, single engine Jav Air Services LLC
Anchorage, Alaska
Standard 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N8799D Piper
PA-18A 150
Fixed-wing, single engine Stadman Tyrel W
Eagle River, Alaska
Restricted 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N9721U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-03-26 ValidFAA registration status code V: Valid registration. All codes
N35564 Cessna
172I
Fixed-wing, single engine Port Townsend Aero Museum
Port Townsend, Washington
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N4325V Piper
PA-28-161
Fixed-wing, single engine Archer Assoc LLC
Ashburn, Virginia
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N57385 Bellanca
7GCAA
Fixed-wing, single engine Victor Foxtrot LLC
Scott City, Kansas
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N737XA Cessna
172N
Fixed-wing, single engine First Eclipse Limited
Richmond, Virginia
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N79093 Cessna
172K
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N8086D Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N810DA Piper
PA-28-161
Fixed-wing, single engine Mjh Aero INC
Houston, Texas
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N8813N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N9536H Cessna
172M
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N1928F Cessna
172N
Fixed-wing, single engine Jav Air Services LLC
Anchorage, Alaska
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N19658 Cessna
172L
Fixed-wing, single engine Individual owner
Hawaii
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N2203P Piper
PA-23-150
Fixed-wing, multi-engine One More Time Aviation INC
Bossier City, Louisiana
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N242LP Dupre Lawrence A
RV 6A
Fixed-wing, single engine Individual owner
California
Experimental 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N30139 Cessna
177
Fixed-wing, single engine Individual owner
Washington
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N3489T Cessna
177
Fixed-wing, single engine Blue Skies Aviation LLC
Belfast, Maine
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N3560E Piper
PA-28-161
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N621HS Piper
PA-28-151
Fixed-wing, single engine Blue Skies Flying Services INC
Lake In the Hills, Illinois
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N16MR Randall Marvin L
VANS RV-3A
Fixed-wing, single engine Vanguard Squadron INC
Tea, South Dakota
Experimental 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N25RV Ludtke E L/Skoglund C
RV-3A
Fixed-wing, single engine Vanguard Squadron INC
Tea, South Dakota
Experimental 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N391DW Sorrels
GLASTAR
Fixed-wing, single engine Individual owner
Montana
Experimental 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N5044E Cessna
172N
Fixed-wing, single engine Aviation Needs LLC
Stapleton, Nebraska
Standard 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N6GT Wilts Gayle T
RV-3A
Fixed-wing, single engine Vanguard Squadron INC
Tea, South Dakota
Experimental 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N710RD Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N82751 Piper
PA-18-150
Fixed-wing, single engine Fly49 LLC
Palmer, Alaska
Multiple 2019-03-22 ValidFAA registration status code V: Valid registration. All codes
N9638H Cessna
172M
Fixed-wing, single engine Hatbright Farm LLC
Wilmington, Delaware
Standard 2019-03-21 ValidFAA registration status code V: Valid registration. All codes
N1770B Myers
EAA BI-PLANE
Fixed-wing, single engine Co-owned owner
Kansas
Experimental 2019-03-20 ValidFAA registration status code V: Valid registration. All codes
N53703 Cessna
172P
Fixed-wing, single engine University of Michigan Flyers INC
Ann Arbor, Michigan
Standard 2019-03-20 ValidFAA registration status code V: Valid registration. All codes
N6853H Cessna
172M
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2019-03-20 ValidFAA registration status code V: Valid registration. All codes
N4521X Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-03-19 ValidFAA registration status code V: Valid registration. All codes
N484DH Hamm Donald P
VANS RV-4
Fixed-wing, single engine Raincross Aviation Services INC
Wilmington, Delaware
Experimental 2019-03-19 ValidFAA registration status code V: Valid registration. All codes
N64TH Hamm Thomas
RV-6
Fixed-wing, single engine Raincross Aviation Services INC
Wilmington, Delaware
Experimental 2019-03-19 ValidFAA registration status code V: Valid registration. All codes
N68067 Brierton-Hawkinson
BD-4
Fixed-wing, single engine Individual owner
California
Experimental 2019-03-19 ValidFAA registration status code V: Valid registration. All codes
N8141K Kezele William
LONG-EZ
Fixed-wing, single engine Individual owner
Idaho
Experimental 2019-03-19 ValidFAA registration status code V: Valid registration. All codes
N868K Morphew Ben
MORPHEW RLU-1 BREEZY
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-03-19 ValidFAA registration status code V: Valid registration. All codes
N4225T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-03-18 ValidFAA registration status code V: Valid registration. All codes
N5205B Mooney Aircraft Corp.
M20
Fixed-wing, single engine Individual owner
California
Standard 2019-03-18 ValidFAA registration status code V: Valid registration. All codes
N79246 Cessna
172K
Fixed-wing, single engine Farrv LLC
Ogden, Utah
Standard 2019-03-18 ValidFAA registration status code V: Valid registration. All codes
N172VF Cessna
172M
Fixed-wing, single engine Victor Foxtrot LLC
Scott City, Kansas
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N1987L Beech
B19
Fixed-wing, single engine Big Bend Community College
Moses Lake, Washington
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N20195 Cessna
172M
Fixed-wing, single engine Vertol Systems Company INC
Destin, Florida
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N357LH Robinson Helicopter
R22 BETA
Helicopter Elite Aerial Photography INC
Naples, Florida
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N38GE Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Florida Captain Services LLC
Punta Gorda, Florida
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N4020Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N43CZ Atkinson Vance L
COZY
Fixed-wing, single engine Individual owner
California
Experimental 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N59RB Barney Robert James
VANS RV4
Fixed-wing, single engine Withheld at owner's request
Experimental 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N738YX Cessna
172N
Fixed-wing, single engine Individual owner
South Carolina
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N82629 Piper
PA-28-161
Fixed-wing, single engine Dgf & Associates INC
Irving, Texas
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N8336R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N95044 Piper
PA-28-140
Fixed-wing, single engine Mach Point Two Aviation LLC
Conroe, Texas
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N1358T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N1868T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N2398Q Beech
23
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N4106J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N6341J Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N8069D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2019-03-15 ValidFAA registration status code V: Valid registration. All codes
N8894V Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2019-03-15 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.