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
N64296 Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-10-05 ValidFAA registration status code V: Valid registration. All codes
N271GT Cessna
172M
Fixed-wing, single engine Individual owner
Iowa
Standard 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N2893E Cessna
172N
Fixed-wing, single engine N2893E LLC
Reno, Nevada
Standard 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N461RM Cessna
172I
Fixed-wing, single engine Rr&D LP
Fayetteville, North Carolina
Standard 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N66842 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N111LH Cessna
172N
Fixed-wing, single engine Superior Aviation Gateway LLC
Tampa, Florida
Standard 2017-10-03 ValidFAA registration status code V: Valid registration. All codes
N4650D Cessna
172N
Fixed-wing, single engine Superior Aviation Gateway LLC
Tampa, Florida
Standard 2017-10-03 ValidFAA registration status code V: Valid registration. All codes
N5054P Bellanca
7GCBC
Fixed-wing, single engine Doug Harris Aviation LLC
Pryor, Oklahoma
Standard 2017-10-03 ValidFAA registration status code V: Valid registration. All codes
N79440 Cessna
172K
Fixed-wing, single engine Spatiumtech LLC
Madison, Alabama
Standard 2017-10-03 ValidFAA registration status code V: Valid registration. All codes
N81023 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-10-03 ValidFAA registration status code V: Valid registration. All codes
N12531 Cessna
172M
Fixed-wing, single engine Guardian Flight LLC
South Jordan, Utah
Standard 2017-10-02 ValidFAA registration status code V: Valid registration. All codes
N83572 Piper
PA-18-150
Fixed-wing, single engine Pacific Aviation LLC
Cottage Grove, Oregon
Standard 2017-10-02 ValidFAA registration status code V: Valid registration. All codes
N9471D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Montana
Standard 2017-10-02 ValidFAA registration status code V: Valid registration. All codes
N2181B Piper
PA-28-161
Fixed-wing, single engine Individual owner
Hawaii
Standard 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N4311T Piper
PA-28-140
Fixed-wing, single engine Chandler Air Service INC
Chandler, Arizona
Standard 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N482E Cessna
172N
Fixed-wing, single engine Hb Coco & Company
Gonzales, Texas
Standard 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N84578 Cessna
172K
Fixed-wing, single engine San Juan Skyhawks INC
Friday Harbor, Washington
Standard 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N8854D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N2884X Piper
PA-28-161
Fixed-wing, single engine Angle of Attack Flying Company LLC
Springfield, Missouri
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N2950Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Louisiana
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N31161 Upgrove Kevin J
LANCAIR 320
Fixed-wing, single engine Individual owner
Florida
Experimental 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N34DA Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Texas
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N382DF Cessna
172N
Fixed-wing, single engine Dream Flight LLC
Westminster, Maryland
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N75548 Cessna
172N
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N8893C Piper
PA-28-151
Fixed-wing, single engine Airquest Aviation LP
Butler, Pennsylvania
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N360MF Omf
OMF-100-160
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-09-26 ValidFAA registration status code V: Valid registration. All codes
N496TP Robinson Helicopter
R22 BETA
Helicopter Vertical Corporation
Kalispell, Montana
Standard 2017-09-26 ValidFAA registration status code V: Valid registration. All codes
N737AA Cessna
172N
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-09-26 ValidFAA registration status code V: Valid registration. All codes
N9865G Cessna
172L
Fixed-wing, single engine Co-owned owner
Florida
Standard 2017-09-26 ValidFAA registration status code V: Valid registration. All codes
N135WM Piper
PA-18-135
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-09-25 ValidFAA registration status code V: Valid registration. All codes
N726PK Robison Lester H
VANS RV9A
Fixed-wing, single engine Simply Living LLC
Fort Myers, Florida
Experimental 2017-09-25 ValidFAA registration status code V: Valid registration. All codes
N893FS Smith Francis H
RV-3
Fixed-wing, single engine Individual owner
Colorado
Experimental 2017-09-25 ValidFAA registration status code V: Valid registration. All codes
N9371K Piper
PA-28-151
Fixed-wing, single engine Everglades Aviation Academy LLC
Weston, Florida
Standard 2017-09-25 ValidFAA registration status code V: Valid registration. All codes
N9681D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-09-25 ValidFAA registration status code V: Valid registration. All codes
N115JA Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2017-09-22 ValidFAA registration status code V: Valid registration. All codes
N3996P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-09-22 ValidFAA registration status code V: Valid registration. All codes
N721JK Kitz John
RV-4
Fixed-wing, single engine Individual owner
Indiana
Experimental 2017-09-22 ValidFAA registration status code V: Valid registration. All codes
N1504V Cessna
172M
Fixed-wing, single engine Culman William A
Scotts Valley, California
Standard 2017-09-21 ValidFAA registration status code V: Valid registration. All codes
N3034Q Piper
PA-28-161
Fixed-wing, single engine Libra Air INC
Las Vegas, Nevada
Standard 2017-09-21 ValidFAA registration status code V: Valid registration. All codes
N3962Q Cessna
172L
Fixed-wing, single engine Individual owner
Montana
Standard 2017-09-21 ValidFAA registration status code V: Valid registration. All codes
N540FL Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2017-09-21 ValidFAA registration status code V: Valid registration. All codes
N7149R Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2017-09-21 ValidFAA registration status code V: Valid registration. All codes
N7341G Cessna
172K
Fixed-wing, single engine Individual owner
Louisiana
Standard 2017-09-21 ValidFAA registration status code V: Valid registration. All codes
N141SW Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N36248 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N399RM Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N64069 Cessna
172P
Fixed-wing, single engine Whiskey Tango Aviation LLC
Keene, North Dakota
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N734UZ Cessna
172N
Fixed-wing, single engine Dream Unthreatened LLC
San Luis Obispo, California
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N7354J Piper
PA-28-140
Fixed-wing, single engine 7354J LLC
Colorado Springs, Colorado
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N26136 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2017-09-19 ValidFAA registration status code V: Valid registration. All codes
N5781W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-09-19 ValidFAA registration status code V: Valid registration. All codes
N7599R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-09-19 ValidFAA registration status code V: Valid registration. All codes
N95343 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-09-19 ValidFAA registration status code V: Valid registration. All codes
N5215T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-09-18 ValidFAA registration status code V: Valid registration. All codes
N80FT Piper
PA-28-161
Fixed-wing, single engine Wifa (Washington International Flight Academy) LLC
Gaithersburg, Maryland
Standard 2017-09-18 ValidFAA registration status code V: Valid registration. All codes
N9886K Piper
PA-28-161
Fixed-wing, single engine Smart03 LLC
Kissimmee, Florida
Standard 2017-09-18 ValidFAA registration status code V: Valid registration. All codes
N1431V Cessna
172M
Fixed-wing, single engine Kgrb LLC
Owensville, Missouri
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N291HA Piper
PA-28-140
Fixed-wing, single engine Chandler Air Service INC
Chandler, Arizona
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N30514 Cessna
172M
Fixed-wing, single engine S&S Aircraft INC
Bennington, Vermont
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N4125J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N418WK Alvarez M R/Malecki J F
VANS ACFT INC RV-6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N5278S Piper
PA-28-140
Fixed-wing, single engine N5278S LLC
Katy, Texas
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N5511F Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N73562 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2017-09-13 ValidFAA registration status code V: Valid registration. All codes
N92SW Piper
PA-18-150
Fixed-wing, single engine Individual owner
Michigan
Restricted 2017-09-13 ValidFAA registration status code V: Valid registration. All codes
N12737 Cessna
172M
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N7688D Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Multiple 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N866MA Piper
PA-28-151
Fixed-wing, single engine Goose Aviation CO
Wilmington, Delaware
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N869WC Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Montana
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N9972V Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N154MD Doering Mike
COZY
Fixed-wing, single engine Co-owned owner
Montana
Experimental 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N208RD Dann R H/Jerritt A
RV-9A
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N221NY Cessna
172P
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N3597E Cessna
172N
Fixed-wing, single engine Blue Bird Aero Club INC
Bonne Terre, Missouri
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N4287J Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N447KS Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Montana
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N5312H Cessna
172M
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N6505W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Washington
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N9671U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N44014 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-09-06 ValidFAA registration status code V: Valid registration. All codes
N4573R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2017-09-06 ValidFAA registration status code V: Valid registration. All codes
N7194D Piper
PA-18A 150
Fixed-wing, single engine Beacon West LLC
Billings, Montana
Restricted 2017-09-06 ValidFAA registration status code V: Valid registration. All codes
N2945M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Restricted 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N5071H Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N61696 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N95447 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N42358 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-09-01 ValidFAA registration status code V: Valid registration. All codes
N54HM Miears H R
ACRO TRAINER
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Experimental 2017-09-01 ValidFAA registration status code V: Valid registration. All codes
N739WR Cessna
172N
Fixed-wing, single engine Raritan Valley Flying School
Princeton, New Jersey
Standard 2017-09-01 ValidFAA registration status code V: Valid registration. All codes
N9870W Piper
PA-28-140
Fixed-wing, single engine Taffin Air LLC
Mount Vernon, Ohio
Standard 2017-09-01 ValidFAA registration status code V: Valid registration. All codes
N157SC Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Washington
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N15933 Piper
PA-28-140
Fixed-wing, single engine Flaps INC
White Bear Lake, Minnesota
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N27446 Taylorcraft
BC-65
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N61631 Cessna
172M
Fixed-wing, single engine Individual owner
Guam
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N78PJ Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N86CK Craighead Kenneth R
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
Colorado
Experimental 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N46433 Cessna
172K
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N734NR Cessna
172N
Fixed-wing, single engine Vintage Aircraft Group
Albion, New York
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N79105 Cessna
172K
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N8922 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-08-30 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.