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
N9963E Cessna
172N
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N5715W Piper
PA-28-160
Fixed-wing, single engine Individual owner
New York
Standard 2022-06-25 ValidFAA registration status code V: Valid registration. All codes
N586 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2022-06-25 ValidFAA registration status code V: Valid registration. All codes
N5866U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-06-25 ValidFAA registration status code V: Valid registration. All codes
N1972G American
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2022-06-24 ValidFAA registration status code V: Valid registration. All codes
N2456J Piper
PA-18-150
Fixed-wing, single engine N2456J LLC
Erie, Colorado
Standard 2022-06-23 ValidFAA registration status code V: Valid registration. All codes
N75200 Piper
PA-28-151
Fixed-wing, single engine Rockwell Aviation LLC
Aventura, Florida
Standard 2022-06-22 ValidFAA registration status code V: Valid registration. All codes
N202TX Asberry/Marron
RV 6
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2022-06-21 ValidFAA registration status code V: Valid registration. All codes
N2303Z Beech
23
Fixed-wing, single engine Beech Aero Club
Ashburn, Virginia
Standard 2022-06-21 ValidFAA registration status code V: Valid registration. All codes
N7908G Cessna
172L
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-06-21 ValidFAA registration status code V: Valid registration. All codes
N1600R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N202NE Cessna
172N
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N240RD Downs John R
GLASTAR
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N32363 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N338TR Chuck Wilson
VANS RV-9A
Fixed-wing, single engine Individual owner
California
Experimental 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N4127Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N443E Champion
7KCAB
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N44542 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N47880 Meredith Earl L
VANGRANSVGN RV-4
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N738CV Cessna
172N
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N8115D Piper
PA-22-160
Fixed-wing, single engine Individual owner
South Carolina
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N8634E Piper
PA-28-151
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N99VV Stites
VARIVIGGEN
Fixed-wing, single engine Individual owner
Montana
Experimental 2022-06-18 ValidFAA registration status code V: Valid registration. All codes
N187DM Mann David C
RV-6
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-06-17 ValidFAA registration status code V: Valid registration. All codes
N2971V Piper
PA-28-161
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-06-17 ValidFAA registration status code V: Valid registration. All codes
N56SC Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-06-17 ValidFAA registration status code V: Valid registration. All codes
N79939 Cessna
172K
Fixed-wing, single engine Southeast Aviation Services INC
Hattiesburg, Mississippi
Standard 2022-06-17 ValidFAA registration status code V: Valid registration. All codes
N2147T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2022-06-16 ValidFAA registration status code V: Valid registration. All codes
N2709P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-06-16 ValidFAA registration status code V: Valid registration. All codes
N749VW Thurston
TSC-1A1
Fixed-wing, single engine Individual owner
Florida
Standard 2022-06-16 ValidFAA registration status code V: Valid registration. All codes
N13358 Cessna
172M
Fixed-wing, single engine Nfh Aviation LLC
Pikeville, Kentucky
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N241VU Piper
PA-28-151
Fixed-wing, single engine Dynamic Aircraft Services LLC
Hurst, Texas
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N6026L American
AA-5
Fixed-wing, single engine Individual owner
Washington
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N734UU Cessna
172N
Fixed-wing, single engine Penn Aero LLC
Lewisburg, Pennsylvania
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N1846P Piper
PA-22-150
Fixed-wing, single engine Grumpy Aviation LTD
Denver, Colorado
Standard 2022-06-14 ValidFAA registration status code V: Valid registration. All codes
N303AV Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2022-06-14 ValidFAA registration status code V: Valid registration. All codes
N54396 Piper
PA-28-151
Fixed-wing, single engine Dicey Aviation LLC
Somerset, Kentucky
Standard 2022-06-14 ValidFAA registration status code V: Valid registration. All codes
N6318R Piper
PA-28-140
Fixed-wing, single engine N383J LLC
Henderson, Nevada
Standard 2022-06-14 ValidFAA registration status code V: Valid registration. All codes
N8891N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2022-06-14 ValidFAA registration status code V: Valid registration. All codes
N4407Q Cessna
172M
Fixed-wing, single engine Sund Manufacturing CO
Newburg, North Dakota
Standard 2022-06-13 ValidFAA registration status code V: Valid registration. All codes
N62AM Meyer Alfred R
LOOK ALIKE
Fixed-wing, single engine Individual owner
Alaska
Experimental 2022-06-13 ValidFAA registration status code V: Valid registration. All codes
N9558D Piper
PA-22-160
Fixed-wing, single engine Individual owner
California
Standard 2022-06-13 ValidFAA registration status code V: Valid registration. All codes
N9574H Cessna
172M
Fixed-wing, single engine Jb III LLC
Stuart, Florida
Standard 2022-06-13 ValidFAA registration status code V: Valid registration. All codes
N12572 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N16357 Piper
PA-28-140
Fixed-wing, single engine Ktup Aviation LLC
Belden, Mississippi
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N20352 Cessna
172M
Fixed-wing, single engine Airspacedfw LLC
Aurora, Texas
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N26294 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N26389 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N737WT Cessna
172N
Fixed-wing, single engine Hillcrest Aircraft CO
Lewiston, Idaho
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N739LS Cessna
172N
Fixed-wing, single engine Benham Properties LLC
Sullivan, Indiana
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N74AL Cessna
150L
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N9286T Fitts William J
RV-3
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-06-10 ValidFAA registration status code V: Valid registration. All codes
N9798P Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2022-06-10 ValidFAA registration status code V: Valid registration. All codes
N1974W Beech
B19
Fixed-wing, single engine Individual owner
California
Standard 2022-06-09 ValidFAA registration status code V: Valid registration. All codes
N25D Piper
PA-28-160
Fixed-wing, single engine Steves Landavator Service LLC
Oley, Pennsylvania
Standard 2022-06-07 ValidFAA registration status code V: Valid registration. All codes
N7124R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-06-07 ValidFAA registration status code V: Valid registration. All codes
N734FN Cessna
172N
Fixed-wing, single engine Safety In Motion Flight Center INC
Puyallup, Washington
Standard 2022-06-07 ValidFAA registration status code V: Valid registration. All codes
N4333J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2022-06-06 ValidFAA registration status code V: Valid registration. All codes
N367MS Magnificent Seven
SUPER-EZE
Fixed-wing, single engine Individual owner
Nevada
Experimental 2022-06-04 ValidFAA registration status code V: Valid registration. All codes
N7234F Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2022-06-04 ValidFAA registration status code V: Valid registration. All codes
N97702 Cessna
172P
Fixed-wing, single engine Individual owner
Washington
Standard 2022-06-04 ValidFAA registration status code V: Valid registration. All codes
N12LZ Lima Zoo Llc
LIMA ZOO LONG-EZ
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-06-02 ValidFAA registration status code V: Valid registration. All codes
N516AV Cessna
172P
Fixed-wing, single engine N388V LLC
Manassas, Virginia
Standard 2022-06-02 ValidFAA registration status code V: Valid registration. All codes
N5819D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2022-06-02 ValidFAA registration status code V: Valid registration. All codes
N79248 Cessna
172K
Fixed-wing, single engine San Hui Foundation
Denver, North Carolina
Standard 2022-06-01 ValidFAA registration status code V: Valid registration. All codes
N97269 Cessna
172P
Fixed-wing, single engine J&L Aviation LLC
Malta, New York
Standard 2022-06-01 ValidFAA registration status code V: Valid registration. All codes
N55506 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2022-05-31 ValidFAA registration status code V: Valid registration. All codes
N8319L Cessna
172I
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-05-31 ValidFAA registration status code V: Valid registration. All codes
N56849 Piper
PA-28-151
Fixed-wing, single engine Macair Aviation LLC
Xenia, Ohio
Standard 2022-05-28 ValidFAA registration status code V: Valid registration. All codes
N7417D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-05-28 ValidFAA registration status code V: Valid registration. All codes
N3975Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Pennsylvania
Restricted 2022-05-27 ValidFAA registration status code V: Valid registration. All codes
N40874 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-05-26 ValidFAA registration status code V: Valid registration. All codes
N417SF Fs O2 America Inc
VANS RV-6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2022-05-26 ValidFAA registration status code V: Valid registration. All codes
N4796A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2022-05-26 ValidFAA registration status code V: Valid registration. All codes
N7995C Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2022-05-26 ValidFAA registration status code V: Valid registration. All codes
N13807 Cessna
172M
Fixed-wing, single engine Blues Air LLC
Shelby, Mississippi
Multiple 2022-05-25 ValidFAA registration status code V: Valid registration. All codes
N423CZ Esselstyn Chris
COZY
Fixed-wing, single engine Rutan Aircraft Flying Experience
Waller, Texas
Experimental 2022-05-25 ValidFAA registration status code V: Valid registration. All codes
N4254P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Minnesota
Standard 2022-05-25 ValidFAA registration status code V: Valid registration. All codes
N508BD Piper
PA-28
Fixed-wing, single engine Iron Wings Aviation LLC
Ralph, Michigan
Standard 2022-05-25 ValidFAA registration status code V: Valid registration. All codes
N6633W Piper
PA-28-140
Fixed-wing, single engine Syf LLC
Okmulgee, Oklahoma
Standard 2022-05-25 ValidFAA registration status code V: Valid registration. All codes
N13255 Cessna
172M
Fixed-wing, single engine Mission Aviation Training Academy
Arlington, Washington
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N18ZZ Piper
PA-18A-135
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N3054Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Washington
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N46031 Cessna
172I
Fixed-wing, single engine Individual owner
Maine
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N6239D Cessna
172N
Fixed-wing, single engine Aerial Precision LLC
Entiat, Washington
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N7164C Piper
PA-28-151
Fixed-wing, single engine D&J Aviation LLC
Apopka, Florida
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N8108D Piper
PA-22
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N8369A Piper
PA-28-161
Fixed-wing, single engine Northern Ventures II LLC
Carl Junction, Missouri
Standard 2022-05-24 ValidFAA registration status code V: Valid registration. All codes
N1057F Cessna
172N
Fixed-wing, single engine Boldflight LLC
Bargersville, Indiana
Standard 2022-05-23 ValidFAA registration status code V: Valid registration. All codes
N571FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2022-05-20 ValidFAA registration status code V: Valid registration. All codes
N977J Piper
PA-28-151
Fixed-wing, single engine Oklahoma Aeronautics Academy LLC
Oklahoma City, Oklahoma
Standard 2022-05-20 ValidFAA registration status code V: Valid registration. All codes
N41977 Piper
PA-28-151
Fixed-wing, single engine Augusti Group Enterprises INC
Clayton, North Carolina
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N5092T Beech
19A
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N52438 Cessna
172P
Fixed-wing, single engine Rick Aviation INC
Newport News, Virginia
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N5311T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N64082 Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N83449 Piper
PA-18-150
Fixed-wing, single engine Withheld at owner's request
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N862TW Cessna
172N
Fixed-wing, single engine Tailwinds LLC
Ewing, New Jersey
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N8647V Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Nevada
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N271AM Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2022-05-18 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.