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
N18SW Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2015-11-17 ValidFAA registration status code V: Valid registration. All codes
N1932Z David E Spencer
PA 19 REPLICA
Fixed-wing, single engine Individual owner
Alabama
Experimental 2015-11-17 ValidFAA registration status code V: Valid registration. All codes
N301JR Cessna
172M
Fixed-wing, single engine Tropitech INC
San Juan, Puerto Rico
Standard 2015-11-17 ValidFAA registration status code V: Valid registration. All codes
N733CQ Cessna
172N
Fixed-wing, single engine Gulf Coast Helicopters INC
Pearland, Texas
Standard 2015-11-17 ValidFAA registration status code V: Valid registration. All codes
N9401D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2015-11-17 ValidFAA registration status code V: Valid registration. All codes
N1195A Piper
PA-18-125
Fixed-wing, single engine Individual owner
Texas
Standard 2015-11-16 ValidFAA registration status code V: Valid registration. All codes
N4250Q Cessna
172L
Fixed-wing, single engine Individual owner
Washington
Standard 2015-11-16 ValidFAA registration status code V: Valid registration. All codes
N249AK Rupp-Roger
STARDUSTER TOO SA300
Fixed-wing, single engine English Corey B
Fargo, North Dakota
Experimental 2015-11-12 ValidFAA registration status code V: Valid registration. All codes
N3054Q Englert Robert C
FLOATSTAR
Fixed-wing, single engine Individual owner
New York
Experimental 2015-11-12 ValidFAA registration status code V: Valid registration. All codes
N178RS Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2015-11-10 ValidFAA registration status code V: Valid registration. All codes
N471AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Alabama
Standard 2015-11-10 ValidFAA registration status code V: Valid registration. All codes
N9515D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Michigan
Standard 2015-11-10 ValidFAA registration status code V: Valid registration. All codes
N7206C Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2015-11-09 ValidFAA registration status code V: Valid registration. All codes
N9566H Cessna
172M
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2015-11-09 ValidFAA registration status code V: Valid registration. All codes
N400NE Omf
OMF-100-160
Fixed-wing, single engine Individual owner
California
Standard 2015-11-06 ValidFAA registration status code V: Valid registration. All codes
N57472 Bellanca
7GCBC
Fixed-wing, single engine Kutztown Aviation Service INC
Germansville, Pennsylvania
Standard 2015-11-06 ValidFAA registration status code V: Valid registration. All codes
N2300H Robinson Helicopter
R22 BETA
Helicopter N112Vg LLC
Princeton, New Jersey
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N42095 Cessna
172M
Fixed-wing, single engine Cpkb
Summit, New Jersey
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N43717 Piper
PA-28-151
Fixed-wing, single engine A Comet Aviation LLC
Altus, Oklahoma
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N44528 Piper
PA-28-180
Fixed-wing, single engine Flywerx LLC
Anchor Point, Alaska
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N75626 Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N807EJ Piper
PA-18-135
Fixed-wing, single engine Baldmans Aircraft Services LLC
Wilmington, Delaware
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N82084 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N84221 Cessna
172K
Fixed-wing, single engine Individual owner
Georgia
Standard 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N907J Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2015-11-05 ValidFAA registration status code V: Valid registration. All codes
N4218Y Piper
PA-18A
Fixed-wing, single engine Individual owner
Texas
Standard 2015-11-04 ValidFAA registration status code V: Valid registration. All codes
N56724 Piper
PA-28-140
Fixed-wing, single engine Marianas Air Transfer INC
Tinian, Northern Mariana Islands
Standard 2015-11-04 ValidFAA registration status code V: Valid registration. All codes
N1796T Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-11-03 ValidFAA registration status code V: Valid registration. All codes
N3093E Cessna
172N
Fixed-wing, single engine Individual owner
Missouri
Standard 2015-11-03 ValidFAA registration status code V: Valid registration. All codes
N9635U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Indiana
Standard 2015-11-03 ValidFAA registration status code V: Valid registration. All codes
N2812Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2015-11-02 ValidFAA registration status code V: Valid registration. All codes
N56735 Piper
PA-28-151
Fixed-wing, single engine Kilo Mike Aviation LLC
Hilliard, Ohio
Standard 2015-11-02 ValidFAA registration status code V: Valid registration. All codes
N1071X Piper
PA-28-140
Fixed-wing, single engine Peter Prince Aviation Center LLC
Milton, Florida
Standard 2015-10-30 ValidFAA registration status code V: Valid registration. All codes
N15916 Piper
PA-28-140
Fixed-wing, single engine Marianas Air Transfer INC
Tinian, Northern Mariana Islands
Standard 2015-10-30 ValidFAA registration status code V: Valid registration. All codes
N5952U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2015-10-30 ValidFAA registration status code V: Valid registration. All codes
N7670G Cessna
172L
Fixed-wing, single engine Premier Aviation LLC
Philadelphia, Mississippi
Standard 2015-10-30 ValidFAA registration status code V: Valid registration. All codes
N1457V Cessna
172M
Fixed-wing, single engine Skyhawk Aviation LLC
Rutherfordton, North Carolina
Standard 2015-10-29 ValidFAA registration status code V: Valid registration. All codes
N5417F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Georgia
Standard 2015-10-29 ValidFAA registration status code V: Valid registration. All codes
N97984 Cessna
172P
Fixed-wing, single engine Individual owner
Arkansas
Standard 2015-10-29 ValidFAA registration status code V: Valid registration. All codes
N19958 Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2015-10-28 ValidFAA registration status code V: Valid registration. All codes
N8559Z Robinson Helicopter
R22
Helicopter Moss Aviation LLC
Howell, New Jersey
Standard 2015-10-27 ValidFAA registration status code V: Valid registration. All codes
N30763 Cessna
177B
Fixed-wing, single engine Individual owner
Florida
Standard 2015-10-26 ValidFAA registration status code V: Valid registration. All codes
N6513D Cessna
172N
Fixed-wing, single engine Ghia Flying Venture LLC
Scottsdale, Arizona
Standard 2015-10-26 ValidFAA registration status code V: Valid registration. All codes
N2HA Cessna
172M
Fixed-wing, single engine Brunner Robert L
Jefferson, Oregon
Standard 2015-10-23 ValidFAA registration status code V: Valid registration. All codes
N472AT Robinson Helicopter
R22 BETA
Helicopter Airmen Testing and Training INC
Lantana, Florida
Multiple 2015-10-23 ValidFAA registration status code V: Valid registration. All codes
N8594 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
South Dakota
Standard 2015-10-23 ValidFAA registration status code V: Valid registration. All codes
N5197H Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2015-10-22 ValidFAA registration status code V: Valid registration. All codes
N6472R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-10-22 ValidFAA registration status code V: Valid registration. All codes
N6756W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2015-10-21 ValidFAA registration status code V: Valid registration. All codes
N82100 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Florida
Standard 2015-10-21 ValidFAA registration status code V: Valid registration. All codes
N33313 Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-10-20 ValidFAA registration status code V: Valid registration. All codes
N4128Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-10-20 ValidFAA registration status code V: Valid registration. All codes
N4787E Cessna
172N
Fixed-wing, single engine Silverhawk Aviation Academy LLC
Caldwell, Idaho
Standard 2015-10-20 ValidFAA registration status code V: Valid registration. All codes
N96867 Cessna
172P
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2015-10-20 ValidFAA registration status code V: Valid registration. All codes
N172KD Cessna
172M
Fixed-wing, single engine Kad Aviation LLC
Athens, Alabama
Standard 2015-10-19 ValidFAA registration status code V: Valid registration. All codes
N631RV Berlin James V
RV6
Fixed-wing, single engine Michigan Tail Draggers LLC
Macomb, Michigan
Experimental 2015-10-19 ValidFAA registration status code V: Valid registration. All codes
N65842 Cessna
172P
Fixed-wing, single engine Holladay Aviation LLC
Jacksonville, Florida
Standard 2015-10-19 ValidFAA registration status code V: Valid registration. All codes
N98710 Cessna
172P
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2015-10-19 ValidFAA registration status code V: Valid registration. All codes
N376JM Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2015-10-16 ValidFAA registration status code V: Valid registration. All codes
N44580 Piper
PA-28-151
Fixed-wing, single engine Mtt Aviation Services INC
Johnstown, Pennsylvania
Standard 2015-10-16 ValidFAA registration status code V: Valid registration. All codes
N9776D Piper
PA-18A 150
Fixed-wing, single engine 76 Delta LLC
Garwood, Texas
Multiple 2015-10-16 ValidFAA registration status code V: Valid registration. All codes
N118TM American Champion Aircraft
7GCBC
Fixed-wing, single engine Harper Jean
Centennial, Colorado
Standard 2015-10-15 ValidFAA registration status code V: Valid registration. All codes
N4558R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2015-10-14 ValidFAA registration status code V: Valid registration. All codes
N561Z Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2015-10-14 ValidFAA registration status code V: Valid registration. All codes
N6987D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Standard 2015-10-14 ValidFAA registration status code V: Valid registration. All codes
N161BG Piper
PA-28-161
Fixed-wing, single engine Individual owner
Virginia
Standard 2015-10-13 ValidFAA registration status code V: Valid registration. All codes
N3182Z Piper
PA-18-150
Fixed-wing, single engine Arnt Aerial Spraying INC
Worthington, Minnesota
Multiple 2015-10-13 ValidFAA registration status code V: Valid registration. All codes
N814KC Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2015-10-13 ValidFAA registration status code V: Valid registration. All codes
N8979R Champion
7GCB
Fixed-wing, single engine Individual owner
Wyoming
Standard 2015-10-13 ValidFAA registration status code V: Valid registration. All codes
N1768J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2015-10-09 ValidFAA registration status code V: Valid registration. All codes
N3530K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2015-10-09 ValidFAA registration status code V: Valid registration. All codes
N3819Q Cessna
172L
Fixed-wing, single engine Gulf Coast Aero Club INC
Sarasota, Florida
Standard 2015-10-09 ValidFAA registration status code V: Valid registration. All codes
N4326Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-10-09 ValidFAA registration status code V: Valid registration. All codes
N7528F Champion
7GCBC
Fixed-wing, single engine Individual owner
Ohio
Standard 2015-10-09 ValidFAA registration status code V: Valid registration. All codes
N235PA Piper
PA-28-161
Fixed-wing, single engine Good Flight Aviation LLC
Stockton, California
Standard 2015-10-08 ValidFAA registration status code V: Valid registration. All codes
N4687R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2015-10-08 ValidFAA registration status code V: Valid registration. All codes
N471PR Cessna
172M
Fixed-wing, single engine Red Arrow Aviation LLC
Santa Teresa, New Mexico
Standard 2015-10-08 ValidFAA registration status code V: Valid registration. All codes
N8980R Champion
7GCB
Fixed-wing, single engine Holmes Aviation INC
Cannon Falls, Minnesota
Standard 2015-10-08 ValidFAA registration status code V: Valid registration. All codes
N1561V Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2015-10-07 ValidFAA registration status code V: Valid registration. All codes
N7094D Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Montana
Multiple 2015-10-07 ValidFAA registration status code V: Valid registration. All codes
N84695 Cessna
172K
Fixed-wing, single engine Co-owned owner
California
Standard 2015-10-07 ValidFAA registration status code V: Valid registration. All codes
N1118M Thorp
T-18
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N281DM American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
California
Standard 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N302CM Lemond John
FLY FISHER
Fixed-wing, single engine Co-owned owner
Washington
Experimental 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N3048Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N32JB Blackwell
MUSTANG MOD. II
Fixed-wing, single engine Heimat CORP
Lincoln, Nebraska
Experimental 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N9517D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N5937W Piper
PA-28-150
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2015-10-05 ValidFAA registration status code V: Valid registration. All codes
N6485W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2015-10-05 ValidFAA registration status code V: Valid registration. All codes
N4859G Cessna
172N
Fixed-wing, single engine Airgo INC
Centralia, Illinois
Standard 2015-10-02 ValidFAA registration status code V: Valid registration. All codes
N734UY Cessna
172N
Fixed-wing, single engine AG & Csv INC
Pine Bush, New York
Standard 2015-10-02 ValidFAA registration status code V: Valid registration. All codes
N79955 Cessna
172K
Fixed-wing, single engine Individual owner
Alabama
Standard 2015-10-02 ValidFAA registration status code V: Valid registration. All codes
N2095P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2015-10-01 ValidFAA registration status code V: Valid registration. All codes
N2420Q Graber Joel C
VANS RV4
Fixed-wing, single engine Bobby J Kirby JR LLC
Hernando, Florida
Experimental 2015-10-01 ValidFAA registration status code V: Valid registration. All codes
N4247Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2015-10-01 ValidFAA registration status code V: Valid registration. All codes
N734CQ Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2015-10-01 ValidFAA registration status code V: Valid registration. All codes
N5842L American
AA-5
Fixed-wing, single engine Individual owner
Connecticut
Standard 2015-09-30 ValidFAA registration status code V: Valid registration. All codes
N6961Q Beech
19A
Fixed-wing, single engine Individual owner
Missouri
Standard 2015-09-30 ValidFAA registration status code V: Valid registration. All codes
N8699D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2015-09-30 ValidFAA registration status code V: Valid registration. All codes
N5446H Cessna
172M
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2015-09-29 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.