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
N13CK Piper
PA-28
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N3934Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N44553 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N46760 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N476SM Piper
PA-18-150
Fixed-wing, single engine Tail Slide Aviation LLC
Wilmington, Delaware
Multiple 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N8979V Cessna
172M
Fixed-wing, single engine Avel Aircraft INC
West Chicago, Illinois
Standard 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N98SA Piper
PA-18-150
Fixed-wing, single engine Tail Slide Aviation LLC
Wilmington, Delaware
Standard 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N5616Y Piper
PA-18-150
Fixed-wing, single engine Bigfoot Aviation LLC
Wilmington, Delaware
Standard 2017-06-20 ValidFAA registration status code V: Valid registration. All codes
N99045 Cessna
172P
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-06-20 ValidFAA registration status code V: Valid registration. All codes
N9985D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-06-20 ValidFAA registration status code V: Valid registration. All codes
N12953 Cessna
172M
Fixed-wing, single engine Individual owner
Maryland
Standard 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N161GT Cessna
172P
Fixed-wing, single engine Yellow Jacket Flying Club INC
Atlanta, Georgia
Standard 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N5090T Beech
19A
Fixed-wing, single engine Individual owner
New York
Standard 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N7043B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N13675 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-06-16 ValidFAA registration status code V: Valid registration. All codes
N1480U Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2017-06-16 ValidFAA registration status code V: Valid registration. All codes
N365RW Windeler Richard J
RV-4
Fixed-wing, single engine Walter Aviation
Perry, Iowa
Experimental 2017-06-16 ValidFAA registration status code V: Valid registration. All codes
N3882Q Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-06-16 ValidFAA registration status code V: Valid registration. All codes
N52RV Chaplin Raymond L Jr
RV 6A
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2017-06-16 ValidFAA registration status code V: Valid registration. All codes
N79189 Cessna
172K
Fixed-wing, single engine Co-owned owner
Connecticut
Standard 2017-06-16 ValidFAA registration status code V: Valid registration. All codes
N3627Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
California
Standard 2017-06-15 ValidFAA registration status code V: Valid registration. All codes
N655DK Skovbjerg Jorgen
COZY MK 3
Fixed-wing, single engine Individual owner
California
Experimental 2017-06-15 ValidFAA registration status code V: Valid registration. All codes
N83345 Piper
PA-28-161
Fixed-wing, single engine Whytes INC
Coconut Creek, Florida
Standard 2017-06-15 ValidFAA registration status code V: Valid registration. All codes
N336N Fanning Jerry D Sr
AVID MAGNUM
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Experimental 2017-06-14 ValidFAA registration status code V: Valid registration. All codes
N7904G Cessna
172L
Fixed-wing, single engine Right Rudder LLC
Rexburg, Idaho
Standard 2017-06-14 ValidFAA registration status code V: Valid registration. All codes
N9257P Piper
PA-18-150
Fixed-wing, single engine Brooks Laura
Palmer, Alaska
Standard 2017-06-14 ValidFAA registration status code V: Valid registration. All codes
N9851U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2017-06-14 ValidFAA registration status code V: Valid registration. All codes
N3838Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-06-13 ValidFAA registration status code V: Valid registration. All codes
N7135B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2017-06-13 ValidFAA registration status code V: Valid registration. All codes
N734CV Cessna
172N
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-06-13 ValidFAA registration status code V: Valid registration. All codes
N5564F Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-06-12 ValidFAA registration status code V: Valid registration. All codes
N739TS Cessna
172N
Fixed-wing, single engine Arispe Aviation LLC
Mckinney, Texas
Standard 2017-06-12 ValidFAA registration status code V: Valid registration. All codes
N3673P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-06-09 ValidFAA registration status code V: Valid registration. All codes
N79323 Cessna
172N
Fixed-wing, single engine Carstairs Energy INC
Los Osos, California
Standard 2017-06-08 ValidFAA registration status code V: Valid registration. All codes
N7307D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Iowa
Standard 2017-06-07 ValidFAA registration status code V: Valid registration. All codes
N1273T Piper
PA-28-140
Fixed-wing, single engine Zulu Aviation LLC
Newcastle, Oklahoma
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N308MT Seth J Badje
PANHANDLE CUB
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N4260Q Cessna
172L
Fixed-wing, single engine Individual owner
Oregon
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N4610Y Piper
PA-18-150
Fixed-wing, single engine Panama City Cycles INC
Panama City, Florida
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N61640 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N7109Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N80868 Cessna
172M
Fixed-wing, single engine Individual owner
Maine
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N8477E Cessna
172N
Fixed-wing, single engine Vestasur LLC
Chauvin, Louisiana
Standard 2017-06-06 ValidFAA registration status code V: Valid registration. All codes
N80295 Cessna
172M
Fixed-wing, single engine Legacy Skies Aviation LLC
Rogers, Arkansas
Standard 2017-06-05 ValidFAA registration status code V: Valid registration. All codes
N1344P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N13594 Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N2521U Piper
PA-28-161
Fixed-wing, single engine N2521U LLC
Danbury, Connecticut
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N26103 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N4392Q Cessna
172L
Fixed-wing, single engine Individual owner
Kentucky
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N5140G Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N7348J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2017-06-02 ValidFAA registration status code V: Valid registration. All codes
N123FP Phillips Frank
RV6-A
Fixed-wing, single engine Co-owned owner
California
Experimental 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N1474F Cessna
172N
Fixed-wing, single engine Jlb Aviation Services LLC
Woodbine, New Jersey
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N1954V Cessna
172M
Fixed-wing, single engine Bray Aviation LLC
Calera, Oklahoma
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N2080E Cessna
172N
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N3034V Maule
MX-7-160
Fixed-wing, single engine Wdt LLC
Otis, Oregon
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N5504F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N5972U Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N6030C Callair
A-5T
Fixed-wing, single engine Individual owner
Oregon
Restricted 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N661JC Mann Jere M
RV-6A
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N98EE Piper
PA-18-150
Fixed-wing, single engine Individual owner
Delaware
Standard 2017-06-01 ValidFAA registration status code V: Valid registration. All codes
N170SK Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2017-05-31 ValidFAA registration status code V: Valid registration. All codes
N5472R Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2017-05-31 ValidFAA registration status code V: Valid registration. All codes
N8444J Piper
PA-28-161
Fixed-wing, single engine Heartland AG Aviation LLC
Lancaster, Kansas
Standard 2017-05-31 ValidFAA registration status code V: Valid registration. All codes
N9999D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-05-31 ValidFAA registration status code V: Valid registration. All codes
N375YV Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2017-05-30 ValidFAA registration status code V: Valid registration. All codes
N401LS Cessna
172P
Fixed-wing, single engine El Paso Aero INC
El Paso, Texas
Standard 2017-05-30 ValidFAA registration status code V: Valid registration. All codes
N4843A Piper
PA-22-150
Fixed-wing, single engine Nous Air LLC
Yukon, Oklahoma
Standard 2017-05-30 ValidFAA registration status code V: Valid registration. All codes
N738EP Cessna
172N
Fixed-wing, single engine Command-Aire LLC
Seattle, Washington
Standard 2017-05-30 ValidFAA registration status code V: Valid registration. All codes
N738VJ Cessna
172N
Fixed-wing, single engine Command-Aire LLC
Seattle, Washington
Standard 2017-05-30 ValidFAA registration status code V: Valid registration. All codes
N7643G Cessna
172L
Fixed-wing, single engine Triad Aviation Academy LLC
Greensboro, North Carolina
Standard 2017-05-26 ValidFAA registration status code V: Valid registration. All codes
N8884D Piper
PA-18A
Fixed-wing, single engine J C Aero LLC
Yelm, Washington
Multiple 2017-05-26 ValidFAA registration status code V: Valid registration. All codes
N2795J Cessna
172N
Fixed-wing, single engine Endeavour Flight Training INC
Miami, Florida
Standard 2017-05-25 ValidFAA registration status code V: Valid registration. All codes
N44715 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-05-25 ValidFAA registration status code V: Valid registration. All codes
N5105Q Cessna
172M
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-05-25 ValidFAA registration status code V: Valid registration. All codes
N108ND Piper
PA-28-161
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N2631P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N29788 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N5132H Cessna
172M
Fixed-wing, single engine Individual owner
New Jersey
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N54502 Cessna
172P
Fixed-wing, single engine Individual owner
California
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N61953 Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N78517 Cessna
172K
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N12793 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N19KS Smith Kent R
RV-9A
Fixed-wing, single engine Individual owner
Maryland
Experimental 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N407FT Piper
PA-28-161
Fixed-wing, single engine Slipstream INC
Cincinnati, Ohio
Standard 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N555ZW Hammack Olin D
HSC-2010
Fixed-wing, single engine Individual owner
Alaska
Experimental 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N6155J Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Anderdoc Aviation INC
Wilmington, Delaware
Standard 2017-05-23 ValidFAA registration status code V: Valid registration. All codes
N20185 Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N2666P Piper
PA-18A
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N4378F Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N5073N Cessna
172P
Fixed-wing, single engine Pavco INC
Gig Harbor, Washington
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N66BR Rowlandd
THORP T-18
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N739BC Cessna
172N
Fixed-wing, single engine Second Wind Aviation CORP
Friday Harbor, Washington
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N73MS Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N9742D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
California
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N9898Q Cessna
172M
Fixed-wing, single engine Second Wind Aviation CORP
Friday Harbor, Washington
Standard 2017-05-22 ValidFAA registration status code V: Valid registration. All codes
N12382 Cessna
172M
Fixed-wing, single engine Blue Sky Pilots INC DBA
Salem, Oregon
Standard 2017-05-19 ValidFAA registration status code V: Valid registration. All codes
N14310 Piper
PA-18-150
Fixed-wing, single engine Pa-18 LLC
Hood River, Oregon
Standard 2017-05-19 ValidFAA registration status code V: Valid registration. All codes
N14365 Piper
PA-18-150
Fixed-wing, single engine Pa-18 LLC
Hood River, Oregon
Standard 2017-05-19 ValidFAA registration status code V: Valid registration. All codes
N80526 Cessna
172M
Fixed-wing, single engine Stoddard County Flyers INC
Dexter, Missouri
Standard 2017-05-19 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.