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
N19795 Cessna
172M
Fixed-wing, single engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2020-12-07 ValidFAA registration status code V: Valid registration. All codes
N20455 Cessna
172M
Fixed-wing, single engine Kachemak Bay Flying Service INC
Temple, Texas
Standard 2020-12-07 ValidFAA registration status code V: Valid registration. All codes
N4317J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Montana
Standard 2020-12-07 ValidFAA registration status code V: Valid registration. All codes
N6504R Beech
B19
Fixed-wing, single engine Individual owner
Maryland
Standard 2020-12-05 ValidFAA registration status code V: Valid registration. All codes
N83324 Piper
PA-18-150
Fixed-wing, single engine Innovations Educational Consulting INC
Eden, Utah
Multiple 2020-12-05 ValidFAA registration status code V: Valid registration. All codes
N172MC Cessna
172M
Fixed-wing, single engine 172 Mikecharlie LLC
Ocala, Florida
Standard 2020-12-04 ValidFAA registration status code V: Valid registration. All codes
N78SK Stark Bobby J
STARK GLASAIR 1RG
Fixed-wing, single engine Individual owner
Indiana
Experimental 2020-12-04 ValidFAA registration status code V: Valid registration. All codes
N172KJ Cessna
172N
Fixed-wing, single engine Ja Flight Services LLC
Sugar Cove, Illinois
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N2588P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N3994Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N41649 Piper
PA-28-151
Fixed-wing, single engine Air Trek North LLC
South Saint Paul, Minnesota
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N57682 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Arkansas
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N641P American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N738AR Cessna
172N
Fixed-wing, single engine Individual owner
Guam
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N94CP Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N211DX Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-12-02 ValidFAA registration status code V: Valid registration. All codes
N131W Globe
GC-1A
Fixed-wing, single engine Brown Jordan Ray
Center Point, Indiana
Standard 2020-12-01 ValidFAA registration status code V: Valid registration. All codes
N938VP Robert J Reimbold
ZENITH CH 750
Fixed-wing, single engine Duckling LLC
Auke Bay, Alaska
Experimental 2020-12-01 ValidFAA registration status code V: Valid registration. All codes
N2331J Beech
23
Fixed-wing, single engine Technical Education Services INC
Virginia Beach, Virginia
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N6231F Cessna
172N
Fixed-wing, single engine H & F Aviation INC
Labelle, Florida
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N6393W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Florida
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N79924 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N95157 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N9779V Cessna
172M
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N46543 Cessna
172K
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2020-11-25 ValidFAA registration status code V: Valid registration. All codes
N5473D Cessna
172N
Fixed-wing, single engine N1705R INC
Cobb, California
Standard 2020-11-25 ValidFAA registration status code V: Valid registration. All codes
N69641 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-11-25 ValidFAA registration status code V: Valid registration. All codes
N31AC Cessna
172M
Fixed-wing, single engine Tango Thirty Aero Clube INC
Mckinney, Texas
Standard 2020-11-24 ValidFAA registration status code V: Valid registration. All codes
N8293C Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-11-24 ValidFAA registration status code V: Valid registration. All codes
N130RR Piper
PA-28-161
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-11-23 ValidFAA registration status code V: Valid registration. All codes
N36028 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-11-23 ValidFAA registration status code V: Valid registration. All codes
N43268 Piper
PA-28-151
Fixed-wing, single engine Inter Global Aviation LLC
New Fairfield, Connecticut
Standard 2020-11-23 ValidFAA registration status code V: Valid registration. All codes
N8290N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-11-23 ValidFAA registration status code V: Valid registration. All codes
N8374L Cessna
172I
Fixed-wing, single engine General Aviation LLC
Henderson, Nevada
Standard 2020-11-23 ValidFAA registration status code V: Valid registration. All codes
N2905X Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N2953X Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N38313 Piper
PA-28-140
Fixed-wing, single engine Lwr LLC
Teton, Idaho
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N6203Z Piper
PA-25
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N63AM Cessna
172N
Fixed-wing, single engine Sierra Yankee Victor LLC
Austin, Texas
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N6408G Cessna
172N
Fixed-wing, single engine Co-owned owner
Washington
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N6605W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N7582C Callair
A-4
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N8919D Piper
PA-22-160
Fixed-wing, single engine Luallin Randy D
Hot Springs, South Dakota
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N9562W Piper
PA-28-140
Fixed-wing, single engine Hub City Aviation Academy LLC
Lubbock, Texas
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N4641R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-11-20 ValidFAA registration status code V: Valid registration. All codes
N12655 Cessna
172M
Fixed-wing, single engine Ker Holdings LLC
Henderson, Nevada
Standard 2020-11-19 ValidFAA registration status code V: Valid registration. All codes
N2601Z Bellanca
7GCBC
Fixed-wing, single engine Richardson Companies INC
Clifton Hill, Missouri
Standard 2020-11-19 ValidFAA registration status code V: Valid registration. All codes
N5951Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Restricted 2020-11-19 ValidFAA registration status code V: Valid registration. All codes
N7464B Brown William A
RV-6
Fixed-wing, single engine Aviator Ppg LLC
Lake Wales, Florida
Experimental 2020-11-19 ValidFAA registration status code V: Valid registration. All codes
N9927Q Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2020-11-19 ValidFAA registration status code V: Valid registration. All codes
N4159S Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2020-11-18 ValidFAA registration status code V: Valid registration. All codes
N4164J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-11-18 ValidFAA registration status code V: Valid registration. All codes
N7087A Piper
PA-28-140
Fixed-wing, single engine Cmcq Flight LLC
Park River, North Dakota
Standard 2020-11-18 ValidFAA registration status code V: Valid registration. All codes
N8476Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-11-18 ValidFAA registration status code V: Valid registration. All codes
N9716D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Florida
Standard 2020-11-18 ValidFAA registration status code V: Valid registration. All codes
N2532P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Washington
Standard 2020-11-17 ValidFAA registration status code V: Valid registration. All codes
N4477A Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Missouri
Restricted 2020-11-17 ValidFAA registration status code V: Valid registration. All codes
N1194M Cessna
172K
Fixed-wing, single engine Gadamic LLC
Fresno, California
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N19709 Cessna
172L
Fixed-wing, single engine Individual owner
Indiana
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N203GT Cessna
172N
Fixed-wing, single engine University of Michigan Flyers INC
Ann Arbor, Michigan
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N46512 Cessna
172K
Fixed-wing, single engine Central Oklahoma Aviators Flying Club
Piedmont, Oklahoma
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N6258K Cessna
172P
Fixed-wing, single engine Gadamic LLC
Fresno, California
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N70052 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N7523G Cessna
172K
Fixed-wing, single engine Triple J Aviation LLC
Mcconnelsville, Ohio
Standard 2020-11-16 ValidFAA registration status code V: Valid registration. All codes
N556JR Rodgers Jerry T
RV-4
Fixed-wing, single engine Semmig Jeffrey C
Oceanside, California
Experimental 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N5740U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N61672 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N6994W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N6999W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N7460L Piper
PA-18-150
Fixed-wing, single engine Individual owner
Colorado
Restricted 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N79434 Cessna
172K
Fixed-wing, single engine Individual owner
Oregon
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N9260S Beech
B19
Fixed-wing, single engine Co-owned owner
Texas
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N913TG Piper
PA-28-161
Fixed-wing, single engine Thomas Home Center INC
Sheridan, Oregon
Standard 2020-11-13 ValidFAA registration status code V: Valid registration. All codes
N9747U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-11-13 ValidFAA registration status code V: Valid registration. All codes
N172SB Cessna
172N
Fixed-wing, single engine Birmingham Flight Center LLC
Birmingham, Alabama
Standard 2020-11-12 ValidFAA registration status code V: Valid registration. All codes
N46721 Cessna
172K
Fixed-wing, single engine Individual owner
Idaho
Standard 2020-11-12 ValidFAA registration status code V: Valid registration. All codes
N6666J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2020-11-12 ValidFAA registration status code V: Valid registration. All codes
N9544W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2020-11-12 ValidFAA registration status code V: Valid registration. All codes
N26407 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-11-10 ValidFAA registration status code V: Valid registration. All codes
N566FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2020-11-10 ValidFAA registration status code V: Valid registration. All codes
N6975H Cessna
172M
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2020-11-10 ValidFAA registration status code V: Valid registration. All codes
N738PJ Cessna
172N
Fixed-wing, single engine Geebee Ventures LLC
Belgrade, Montana
Standard 2020-11-10 ValidFAA registration status code V: Valid registration. All codes
N902H Cessna
172L
Fixed-wing, single engine Individual owner
Indiana
Standard 2020-11-10 ValidFAA registration status code V: Valid registration. All codes
N1140P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N11DM Millikan David L
STARDUSTER II SA-300
Fixed-wing, single engine Suburban Aircraft Leasing and Sales LLC
Sylvania, Ohio
Experimental 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N55EM Piper
PA-28-151
Fixed-wing, single engine Ixi LLC
West Bloomfield, Michigan
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N63659 Cessna
172P
Fixed-wing, single engine Individual owner
New York
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N7028Q Cessna
172L
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N7317G Cessna
172K
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N8131W Piper
PA-28-161
Fixed-wing, single engine Individual owner
Connecticut
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N9892Q Cessna
172M
Fixed-wing, single engine Individual owner
Nebraska
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N357AH Robinson Helicopter
R22 BETA
Helicopter Atlantic Aviation International INC
Lewes, Delaware
Standard 2020-11-07 ValidFAA registration status code V: Valid registration. All codes
N54445 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Utah
Standard 2020-11-07 ValidFAA registration status code V: Valid registration. All codes
N7169F Piper
PA-28-151
Fixed-wing, single engine Pillar Aviation Services LLC
Auburn, New Hampshire
Standard 2020-11-07 ValidFAA registration status code V: Valid registration. All codes
N213AM Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Iowa
Multiple 2020-11-06 ValidFAA registration status code V: Valid registration. All codes
N623LD Lars Durban
VANS ACFT RV-9A
Fixed-wing, single engine Individual owner
Washington
Experimental 2020-11-06 ValidFAA registration status code V: Valid registration. All codes
N707AT Cessna
172N
Fixed-wing, single engine Spacely Space Sprockets LLC
Aurora, Oregon
Standard 2020-11-06 ValidFAA registration status code V: Valid registration. All codes
N7252J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2020-11-06 ValidFAA registration status code V: Valid registration. All codes
N126JR Ryan Francis J
RV-4
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N21769 Cessna
172M
Fixed-wing, single engine Overseas Aviation INC
Wilmington, Delaware
Standard 2020-11-05 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.