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
N9936V Cessna
172M
Fixed-wing, single engine Leading Edge Flight Academy LLC
Bend, Oregon
Standard 2021-09-08 ValidFAA registration status code V: Valid registration. All codes
N164WG Whiskey Gulf Af Inc/Glojek
GLASAIR I
Fixed-wing, single engine Bug Smasher LLC
Mitchell, South Dakota
Experimental 2021-09-07 ValidFAA registration status code V: Valid registration. All codes
N19802 Cessna
172M
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-09-07 ValidFAA registration status code V: Valid registration. All codes
N4358P Piper
PA-23-160
Fixed-wing, multi-engine Qualitair LLC Trustee
Michelstadt,
Standard 2021-09-07 ValidFAA registration status code V: Valid registration. All codes
N9456M Martin L Dickey
BUSH BOSS
Fixed-wing, single engine Individual owner
Alaska
Experimental 2021-09-07 ValidFAA registration status code V: Valid registration. All codes
N38197 Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2021-09-03 ValidFAA registration status code V: Valid registration. All codes
N46382 Cessna
172K
Fixed-wing, single engine Cognition LLC
Billings, Montana
Standard 2021-09-03 ValidFAA registration status code V: Valid registration. All codes
N6997D Piper
PA-18A 150
Fixed-wing, single engine M & M Farms
Fowler, Kansas
Standard 2021-09-03 ValidFAA registration status code V: Valid registration. All codes
N12650 Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N13399 Cessna
172M
Fixed-wing, single engine Great Plains Spraying INC
Colby, Kansas
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N2088B Piper
PA-28-161
Fixed-wing, single engine General Aviation Support CORP
Rosamond, California
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N2681P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Wyoming
Multiple 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N2973Y Piper
PA-28-161
Fixed-wing, single engine Valiair Limited CO Trustee
Casper, Wyoming
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N5098R Cessna
172M
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N5763E Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N96932 Cessna
172P
Fixed-wing, single engine Valiair Lc Trustee
Casper, Wyoming
Standard 2021-09-02 ValidFAA registration status code V: Valid registration. All codes
N31716 Piper
PA-28-161
Fixed-wing, single engine Metro Aircraft CO
Bloomington, Minnesota
Standard 2021-09-01 ValidFAA registration status code V: Valid registration. All codes
N53920 Bellanca
7GCAA
Fixed-wing, single engine Aero Dragger LTD
Warminster, Pennsylvania
Standard 2021-09-01 ValidFAA registration status code V: Valid registration. All codes
N7087G Cessna
172K
Fixed-wing, single engine Individual owner
Tennessee
Multiple 2021-09-01 ValidFAA registration status code V: Valid registration. All codes
N7151G Cessna
172K
Fixed-wing, single engine Roadrunner Flight School LLC
Farmington, New Mexico
Standard 2021-09-01 ValidFAA registration status code V: Valid registration. All codes
N83016 Piper
PA-28-161
Fixed-wing, single engine Maks97 LLC
Sparta, Michigan
Standard 2021-09-01 ValidFAA registration status code V: Valid registration. All codes
N4637V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Christian Swann & Associates INC
Peachtree City, Georgia
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N5064H Cessna
172M
Fixed-wing, single engine Franklin Air Services LLC
New Orleans, Louisiana
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N5919U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N7152L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N790HM Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
Florida
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N13605 Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Multiple 2021-08-30 ValidFAA registration status code V: Valid registration. All codes
N4115Y Bellanca
7GCBC
Fixed-wing, single engine N4115Y LLC
Munday, Texas
Standard 2021-08-30 ValidFAA registration status code V: Valid registration. All codes
N4152N Piper
PA-18-150
Fixed-wing, single engine Air LLC
Salem, Oregon
Standard 2021-08-30 ValidFAA registration status code V: Valid registration. All codes
N624AQ Piper
PA-28-161
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2021-08-30 ValidFAA registration status code V: Valid registration. All codes
N805BJ Ellis George E
RV-6A
Fixed-wing, single engine Co-owned owner
South Carolina
Experimental 2021-08-30 ValidFAA registration status code V: Valid registration. All codes
N9727L Beech
B19
Fixed-wing, single engine Wiseman Holdings Group LLC
Clermont, Florida
Standard 2021-08-30 ValidFAA registration status code V: Valid registration. All codes
N7026R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Washington
Standard 2021-08-28 ValidFAA registration status code V: Valid registration. All codes
N73776 Cessna
172N
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-08-28 ValidFAA registration status code V: Valid registration. All codes
N4143Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Restricted 2021-08-27 ValidFAA registration status code V: Valid registration. All codes
N7688C Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-08-27 ValidFAA registration status code V: Valid registration. All codes
N8898D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2021-08-27 ValidFAA registration status code V: Valid registration. All codes
N10470 Piper
L-21
Fixed-wing, single engine Individual owner
Alaska
Restricted 2021-08-26 ValidFAA registration status code V: Valid registration. All codes
N189SP Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2021-08-26 ValidFAA registration status code V: Valid registration. All codes
N8659E Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-08-26 ValidFAA registration status code V: Valid registration. All codes
N877GT Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-08-26 ValidFAA registration status code V: Valid registration. All codes
N104BV American Champion Aircraft
7GCAA
Fixed-wing, single engine Sea Horse Sportfishing LLC
Clinton, North Carolina
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N12736 Cessna
172M
Fixed-wing, single engine Pumpkin Eater LLC
Tavares, Florida
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N15100 Piper
PA-28-140
Fixed-wing, single engine Brothers Aviation Va LLC
Manassas, Virginia
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N1868H Piper
PA-28-140
Fixed-wing, single engine Sodah One LLC
San Ramon, California
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N2798E Cessna
172N
Fixed-wing, single engine Pumpkin Eater LLC
Tavares, Florida
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N3480K Piper
PA-28-140
Fixed-wing, single engine 3480K LLC
Waycross, Georgia
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N64FV Veenker Frank C
RV-6A
Fixed-wing, single engine Individual owner
Oregon
Experimental 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N73362 Cessna
172M
Fixed-wing, single engine Spanaflight LLC
Puyallup, Washington
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N73399 Cessna
172M
Fixed-wing, single engine Co-owned owner
Florida
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N83669 Piper
PA-18-150
Fixed-wing, single engine Davis Jonathan R
Anchorage, Alaska
Multiple 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N170MF Omf
OMF-100-160
Fixed-wing, single engine Symphony Aircraft Leasing LLC
Fort Lupton, Colorado
Standard 2021-08-24 ValidFAA registration status code V: Valid registration. All codes
N6673J Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-08-24 ValidFAA registration status code V: Valid registration. All codes
N7232J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-08-24 ValidFAA registration status code V: Valid registration. All codes
N8DJ Shroyer Jayme D
MEYERS LITTLE TOOT
Fixed-wing, single engine Ready Air Flyer LLC
New Castle, Delaware
Experimental 2021-08-24 ValidFAA registration status code V: Valid registration. All codes
N9931Q Cessna
172M
Fixed-wing, single engine Dexter Aero Club INC
Stetson, Maine
Standard 2021-08-24 ValidFAA registration status code V: Valid registration. All codes
N6347D Cessna
172N
Fixed-wing, single engine Anthelion LLC
Flemington, New Jersey
Standard 2021-08-23 ValidFAA registration status code V: Valid registration. All codes
N7236D Piper
PA-22-150
Fixed-wing, single engine Go North Productions LLC
Glennallen, Alaska
Standard 2021-08-23 ValidFAA registration status code V: Valid registration. All codes
N732JB Coy David A
RV-6A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2021-08-23 ValidFAA registration status code V: Valid registration. All codes
N8163D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2021-08-23 ValidFAA registration status code V: Valid registration. All codes
N1346R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N2774P Piper
PA-18A 150
Fixed-wing, single engine River Solutions LLC
Cushing, Oklahoma
Multiple 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N281KC Piper
PA-28-161
Fixed-wing, single engine Fly Kilo Charlie LLC
New Century, Kansas
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N4857G Cessna
172N
Fixed-wing, single engine Vero Technical Support INC
Pensacola, Florida
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N5403F Piper
PA-28-140
Fixed-wing, single engine Acs Wings LLC
Deerfield Beach, Florida
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N5487F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Nebraska
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N5VT Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N61633 Cessna
172M
Fixed-wing, single engine Rotor Spec Aviation LLC
Fort Lauderdale, Florida
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N690SH Champion
7GCAA
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N906KS Cessna
172N
Fixed-wing, single engine Kingsky Flight Academy LLC
Lakeland, Florida
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N9964L Cessna
172P
Fixed-wing, single engine Co-owned owner
California
Standard 2021-08-21 ValidFAA registration status code V: Valid registration. All codes
N22XK Kerzie David A
VANS RV-6
Fixed-wing, single engine Individual owner
California
Experimental 2021-08-20 ValidFAA registration status code V: Valid registration. All codes
N3498T Cessna
177
Fixed-wing, single engine Sky View Aviation LLC
Longwood, Florida
Standard 2021-08-20 ValidFAA registration status code V: Valid registration. All codes
N4863A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-08-20 ValidFAA registration status code V: Valid registration. All codes
N5273R Cessna
172M
Fixed-wing, single engine Clear Prop Aviation LLC
Sterling, Virginia
Standard 2021-08-20 ValidFAA registration status code V: Valid registration. All codes
N84888 Cessna
172K
Fixed-wing, single engine Individual owner
Utah
Standard 2021-08-20 ValidFAA registration status code V: Valid registration. All codes
N1403V Cessna
172M
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N2219Y Piper
PA-28-161
Fixed-wing, single engine Region Flyers LLC
Valparaiso, Indiana
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N4261J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N50967 Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N539DT Thompson Derry R
DRT-1
Fixed-wing, single engine Individual owner
Alaska
Experimental 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N55596 Piper
PA-28-140
Fixed-wing, single engine Outdoor Products of Louisiana LLC
Heflin, Louisiana
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N61837 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N7717H Piper
PA-12
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N84PT Tackabury Paul D
EZ-T
Fixed-wing, single engine Individual owner
California
Experimental 2021-08-19 ValidFAA registration status code V: Valid registration. All codes
N1769P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N3350T Piper
PA-28-140
Fixed-wing, single engine Baxley Aviation LLC
Baxley, Georgia
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N469TW Reed Julian Estill
RV-4
Fixed-wing, single engine Individual owner
Alabama
Experimental 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N5AD Gladfelter Dean K
RV-6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N66213 Cessna
172P
Fixed-wing, single engine Global Adventures N66213 LLC
Hollywood, Florida
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N7617D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N8065N Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N821SD Cessna
172P
Fixed-wing, single engine Global Adventures N821Sd LLC
Hollywood, Florida
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N9599W Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Dakota
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N302FG Piper
PA-28-161
Fixed-wing, single engine Tactical Aviation LLC
Plymouth, Michigan
Standard 2021-08-17 ValidFAA registration status code V: Valid registration. All codes
N334JH Haines Joseph E
SHA-GLASAIR
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2021-08-17 ValidFAA registration status code V: Valid registration. All codes
N101BT Heckel Robert P
VANS RV-4
Fixed-wing, single engine Individual owner
Montana
Experimental 2021-08-16 ValidFAA registration status code V: Valid registration. All codes
N5924F Piper
PA-28-151
Fixed-wing, single engine N5924F LLC
Cocoa, Florida
Standard 2021-08-16 ValidFAA registration status code V: Valid registration. All codes
N9047Y Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
New Jersey
Standard 2021-08-16 ValidFAA registration status code V: Valid registration. All codes
N1354U Cessna
172M
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-08-14 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.