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
N1033X Piper
PA-28-151
Fixed-wing, single engine Horizon Enterprises LLC
Kalispel, Montana
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N123KS Cessna
172N
Fixed-wing, single engine Kingsky Flight Academy LLC
Lakeland, Florida
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N20567 Cessna
172M
Fixed-wing, single engine Msl Services INC
Michiana Shores, Indiana
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N53837 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Montana
Restricted 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N6388N Champion
7GCAA
Fixed-wing, single engine August Aero LLC
Kalispell, Montana
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N8364Q Robinson Helicopter
R22
Helicopter Individual owner
Idaho
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N91019 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Florida
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N9612W Piper
PA-28-140
Fixed-wing, single engine Jama Aviation LLC
Blaine, Minnesota
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N19NH Beech
B19
Fixed-wing, single engine Individual owner
Iowa
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N33424 Piper
PA-28-151
Fixed-wing, single engine Macair Aviation LLC
Xenia, Ohio
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N3424Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N53720 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N53797 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N54079 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N555JM Piper
PA-28-161
Fixed-wing, single engine Fingerlakes Area Pilots INC
Seneca Falls, New York
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N73387 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2022-08-26 ValidFAA registration status code V: Valid registration. All codes
N2319C Ferko
THORP T-18
Fixed-wing, single engine Individual owner
Alabama
Experimental 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N3339P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N4035Z Piper
PA-18-150
Fixed-wing, single engine Peninsula Aero Technology INC
Kenai, Alaska
Restricted 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N4164P Piper
PA-23-160
Fixed-wing, multi-engine Seaplanes R Fun INC
Wilmington, Delaware
Standard 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N4912F Piper
PA-28-151
Fixed-wing, single engine Nab LLC
Wichita, Kansas
Standard 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N5213X Champion
7GCBC
Fixed-wing, single engine Sutton Aircraft Salvage LLC
Palmer, Alaska
Standard 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N6693J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2022-08-25 ValidFAA registration status code V: Valid registration. All codes
N2035U Piper
PA-28-151
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N3622P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N42671 Piper
PA-28-151
Fixed-wing, single engine P&N CORP
Marion, Iowa
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N47578 Piper
PA-28-161
Fixed-wing, single engine Donair INC
Toledo, Ohio
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N51236 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Restricted 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N51254 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N52261 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N52441 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N52702 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N61615 Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N7429G Cessna
172K
Fixed-wing, single engine Diditair INC
Knoxville, Tennessee
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N8268W Piper
PA-28-180
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N8754V Bellanca
7GCBC
Fixed-wing, single engine Individual owner
North Dakota
Standard 2022-08-24 ValidFAA registration status code V: Valid registration. All codes
N119M Headrick James C
RV6A
Fixed-wing, single engine Individual owner
Mississippi
Experimental 2022-08-23 ValidFAA registration status code V: Valid registration. All codes
N91202 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2022-08-23 ValidFAA registration status code V: Valid registration. All codes
N96705 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-23 ValidFAA registration status code V: Valid registration. All codes
N96775 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-23 ValidFAA registration status code V: Valid registration. All codes
N97459 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-23 ValidFAA registration status code V: Valid registration. All codes
N99744 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-23 ValidFAA registration status code V: Valid registration. All codes
N2366W Piper
PA-28-161
Fixed-wing, single engine Air-Mods Flight Academy
Robbinsville, New Jersey
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N364CK Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N5661 Thorp
T-18
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N56WA Adams Warren Hall
RV-3
Fixed-wing, single engine Individual owner
New York
Experimental 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N5977D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N6529D Cessna
172N
Fixed-wing, single engine G Force Advantage LLC
Lewes, Delaware
Multiple 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N7434R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N7967G Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N1768T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2022-08-20 ValidFAA registration status code V: Valid registration. All codes
N4781J Beech
A23-19
Fixed-wing, single engine Individual owner
Texas
Standard 2022-08-20 ValidFAA registration status code V: Valid registration. All codes
N6163W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2022-08-20 ValidFAA registration status code V: Valid registration. All codes
N80210 Cessna
172M
Fixed-wing, single engine Atlanta Air Academy LLC
Kennesaw, Georgia
Standard 2022-08-20 ValidFAA registration status code V: Valid registration. All codes
N12604 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2022-08-19 ValidFAA registration status code V: Valid registration. All codes
N13115 Cessna
172M
Fixed-wing, single engine Kkmjj LLC
South Lyon, Michigan
Standard 2022-08-19 ValidFAA registration status code V: Valid registration. All codes
N3703P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-08-19 ValidFAA registration status code V: Valid registration. All codes
N5952S Beech
A23-19
Fixed-wing, single engine Maestro Aviation LLC
Anson, Texas
Standard 2022-08-19 ValidFAA registration status code V: Valid registration. All codes
N8234A Piper
PA-28-161
Fixed-wing, single engine Kt Flight LLC
California, Maryland
Standard 2022-08-19 ValidFAA registration status code V: Valid registration. All codes
N4158L Piper
PA-18-150
Fixed-wing, single engine Jm Lavore Aero INC
Lakeside, Montana
Standard 2022-08-18 ValidFAA registration status code V: Valid registration. All codes
N47ML Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2022-08-18 ValidFAA registration status code V: Valid registration. All codes
N481AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2022-08-18 ValidFAA registration status code V: Valid registration. All codes
N5504W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2022-08-17 ValidFAA registration status code V: Valid registration. All codes
N748RA Piper
PA-28-161
Fixed-wing, single engine Ari Ben Aviator INC
Fort Pierce, Florida
Standard 2022-08-17 ValidFAA registration status code V: Valid registration. All codes
N890BL Lippert Barry M
RV 4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-08-17 ValidFAA registration status code V: Valid registration. All codes
N9953Y Champion
7GCB
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2022-08-17 ValidFAA registration status code V: Valid registration. All codes
N14311 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N19711 Cessna
172L
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N20933 Bentley John O
SILHOUETTE I
Glider Individual owner
Kansas
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N63958 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N64181 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N65276 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Multiple 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N65750 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N65994 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N20604 Cessna
172M
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N395TH Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N4883G Cessna
172N
Fixed-wing, single engine Plane Nuts Aviation LLC
Livingston, Louisiana
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N5160E Cessna
172N
Fixed-wing, single engine Leading Edge Flight Academy LLC
Bend, Oregon
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N54855 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N5755U Piper
PA-28-140
Fixed-wing, single engine Kyzer Aviation Holdings LLC
Fort Mill, South Carolina
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N75518 Cessna
172N
Fixed-wing, single engine Cloudhop LLC
Pinehurst, Texas
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N14043 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N1695J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N207A Abercrombie John E
RV-6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N3033D Piper
PA-28-161
Fixed-wing, single engine Yakima Aero Club
Yakima, Washington
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N6080L American
AA-5
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N725BB Cessna
172N
Fixed-wing, single engine Scenic Concepts LLC
La Crosse, Wisconsin
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N8020F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N831ND Piper
PA-28-161
Fixed-wing, single engine Cirrus Aviation INC
Sarasota, Florida
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N8649 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N13239 Cessna
172M
Fixed-wing, single engine Gusto Air LLC
Birmingham, Michigan
Standard 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N26423 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N32YA Cessna
172N
Fixed-wing, single engine Flydreams Aircraft Group INC
Fort Lauderdale, Florida
Standard 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N699FL Piper
PA-28-140
Fixed-wing, single engine Edgewood Acres LLC
Willmar, Minnesota
Standard 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N8070U Rhodes Keith Stuart
VANS RV9A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N84048 Cessna
172K
Fixed-wing, single engine Kyzer Aviation Holdings LLC
Fort Mill, South Carolina
Standard 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N155MS Ballantyne
PITTS SPECIAL S-1
Fixed-wing, single engine Individual owner
Virginia
Experimental 2022-08-11 ValidFAA registration status code V: Valid registration. All codes
N57335 Piper
PA-28-151
Fixed-wing, single engine N57335 LLC
Churchville, Pennsylvania
Standard 2022-08-11 ValidFAA registration status code V: Valid registration. All codes
N8231Q Piper
PA-28-161
Fixed-wing, single engine Avier LLC
Beverly, Massachusetts
Standard 2022-08-11 ValidFAA registration status code V: Valid registration. All codes
N150AN P Z L Koliber
150A
Fixed-wing, single engine Bachman Aviation LLC
Independence, Iowa
Experimental 2022-08-10 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.