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
N90928 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N5830C Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2019-05-28 ValidFAA registration status code V: Valid registration. All codes
N20189 Cessna
172M
Fixed-wing, single engine Detroit Public Schools Community District
Detroit, Michigan
Standard 2019-05-24 ValidFAA registration status code V: Valid registration. All codes
N21281 Cessna
182P
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2019-05-24 ValidFAA registration status code V: Valid registration. All codes
N510FA Cessna
172N
Fixed-wing, single engine Endeavour Flight Training INC
Opa Locka, Florida
Standard 2019-05-24 ValidFAA registration status code V: Valid registration. All codes
N4407A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N5163W Piper
PA-28
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N54968 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N7777D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N8397R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N9720D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2019-05-23 ValidFAA registration status code V: Valid registration. All codes
N157RF Champion
7GCAA
Fixed-wing, single engine Air Direct Holdings LLC
Stow, Massachusetts
Standard 2019-05-22 ValidFAA registration status code V: Valid registration. All codes
N2204Y Cessna
177
Fixed-wing, single engine Individual owner
South Dakota
Standard 2019-05-22 ValidFAA registration status code V: Valid registration. All codes
N6745J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2019-05-22 ValidFAA registration status code V: Valid registration. All codes
N342WP Piper
PA-28-161
Fixed-wing, single engine Papa LLC
Eufaula, Alabama
Standard 2019-05-21 ValidFAA registration status code V: Valid registration. All codes
N73318 Cessna
172M
Fixed-wing, single engine Lair de Rien Aviation INC Trustee
Wilmington, Delaware
Standard 2019-05-21 ValidFAA registration status code V: Valid registration. All codes
N2518G Champion
7GCAA
Fixed-wing, single engine Vintage Aviation INC
Garden City, New York
Standard 2019-05-20 ValidFAA registration status code V: Valid registration. All codes
N5515M Aero Commander
100
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-20 ValidFAA registration status code V: Valid registration. All codes
N5980U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2019-05-20 ValidFAA registration status code V: Valid registration. All codes
N23CK Meadows Denny
CLIP WING CUB
Fixed-wing, single engine Individual owner
Florida
Experimental 2019-05-17 ValidFAA registration status code V: Valid registration. All codes
N7177R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-05-17 ValidFAA registration status code V: Valid registration. All codes
N8278W Piper
PA-28-180
Fixed-wing, single engine Co-owned owner
New York
Standard 2019-05-17 ValidFAA registration status code V: Valid registration. All codes
N41967 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N52789 Cessna
172P
Fixed-wing, single engine Alameda Aero Club
Alameda, California
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N5375J Cessna
172N
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N8258L Piper
PA-28-161
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N90462 Champion
7GCA
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-05-16 ValidFAA registration status code V: Valid registration. All codes
N5881U Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N61585 Cessna
172M
Fixed-wing, single engine Mele Michael L
Fairview, Oregon
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N7188L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N75922 Cessna
172N
Fixed-wing, single engine Individual owner
Nevada
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N78456 Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N8130D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Virginia
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N95422 Piper
PA-28-140
Fixed-wing, single engine Chimera Air INC
Maumee, Ohio
Standard 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N229BA Cessna
172M
Fixed-wing, single engine Davila Associates
Dorado, Puerto Rico
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N3609M Piper
PA-28-161
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N442DM N757Gs Inc
160
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N474SC Schultz Jack
RV4
Fixed-wing, single engine Individual owner
Michigan
Experimental 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N6150F Cessna
172N
Fixed-wing, single engine Franklin Aviation LLC
Paradise, California
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N6421W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N6865B Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N71KT Piper
PA-28-140
Fixed-wing, single engine L L C LLC
Rapid City, South Dakota
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N79220 Cessna
172K
Fixed-wing, single engine Cavu Flyers LLC
Trenton, South Carolina
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N8346L Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N9683D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N9760C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-05-14 ValidFAA registration status code V: Valid registration. All codes
N32206 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N3662Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N369SP Cessna
172M
Fixed-wing, single engine Xin Han Aviation LLC
Helena, Montana
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N699DS Piper
PA-20-135
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N7042Q Cessna
172L
Fixed-wing, single engine Watts Ruiz LLC
Waco, Texas
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N737ZW Cessna
172N
Fixed-wing, single engine S & S Aviation CO
Ball Ground, Georgia
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N79224 Cessna
172K
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N80458 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2019-05-13 ValidFAA registration status code V: Valid registration. All codes
N5237H Cessna
172M
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-05-10 ValidFAA registration status code V: Valid registration. All codes
N5983D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2019-05-10 ValidFAA registration status code V: Valid registration. All codes
N6642W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2019-05-10 ValidFAA registration status code V: Valid registration. All codes
N68540 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-05-10 ValidFAA registration status code V: Valid registration. All codes
N9789D Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2019-05-10 ValidFAA registration status code V: Valid registration. All codes
N115JL Mcewen Dick L
GLASAIR
Fixed-wing, single engine Shakesby Paul S
Puryear, Tennessee
Experimental 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N12898 Cessna
172M
Fixed-wing, single engine Individual owner
New Jersey
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N25KT Traylor Kenneth D
LONG EZ
Fixed-wing, single engine Individual owner
Florida
Experimental 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N3954P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N40ER Cessna
172N
Fixed-wing, single engine Flying Aces Aero Fleet INC
Guyton, Georgia
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N41500 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N737RG Cessna
172N
Fixed-wing, single engine Individual owner
Nebraska
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N8222F Piper
PA-28-161
Fixed-wing, single engine Jefferson City Aviation INC
Jefferson City, Missouri
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N856KW Champion
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N1961P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N2385T Piper
PA-28-140
Fixed-wing, single engine Squawk 1200 LLC
Springboro, Ohio
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N259JB Bendel James H
RV4
Fixed-wing, single engine Individual owner
Indiana
Experimental 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N342H American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
Montana
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N4776E Cessna
172N
Fixed-wing, single engine Alpha One Aviation LLC
Dunedin, Florida
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N6299D Cessna
172N
Fixed-wing, single engine Jav Air Services LLC
Anchorage, Alaska
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N734KF Cessna
172N
Fixed-wing, single engine Merrill Aviation LLC
Anchorage, Alaska
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N8222W Piper
PA-28-180
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N8437D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Florida
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N91596 Cessna
172M
Fixed-wing, single engine West Michigan Flying Club INC
Norton Shores, Michigan
Standard 2019-05-08 ValidFAA registration status code V: Valid registration. All codes
N20312 Cessna
172M
Fixed-wing, single engine Cardinal Wings Aviation LLC
Buckner, Kentucky
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N2487H Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N2866Q Cessna
172L
Fixed-wing, single engine Aircraft & Aviation Professionals LLC
Coldwater, Michigan
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N3876Q Cessna
172L
Fixed-wing, single engine Kracke Spraying Service INC
Fargo, North Dakota
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N413MA Cessna
172M
Fixed-wing, single engine Sterling Flight Training LLC
Jacksonville, Florida
Standard 2019-05-07 ValidFAA registration status code V: Valid registration. All codes
N7190D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N739UP Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N79203 Cessna
172K
Fixed-wing, single engine Chupito Sabrocito LLC
Paso Robles, California
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N9859P Piper
PA-18-150
Fixed-wing, single engine Birdwood Creek Holding LLC
Elkhorn, Nebraska
Standard 2019-05-06 ValidFAA registration status code V: Valid registration. All codes
N760JM Maule
MX-7-160
Fixed-wing, single engine Co-owned owner
California
Standard 2019-05-04 ValidFAA registration status code V: Valid registration. All codes
N31715 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-05-03 ValidFAA registration status code V: Valid registration. All codes
N5432W Piper
PA-28-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2019-05-03 ValidFAA registration status code V: Valid registration. All codes
N733TD Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2019-05-03 ValidFAA registration status code V: Valid registration. All codes
N848P Polk J G
SHA-GLASAIR
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2019-05-03 ValidFAA registration status code V: Valid registration. All codes
N1875J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2019-05-02 ValidFAA registration status code V: Valid registration. All codes
N50291 Cessna
172M
Fixed-wing, single engine Euros Aircraft Leasing LLC
College Station, Texas
Standard 2019-05-01 ValidFAA registration status code V: Valid registration. All codes
N5626U Piper
PA-28-140
Fixed-wing, single engine Fly Around Alaska LLC
Palmer, Alaska
Standard 2019-05-01 ValidFAA registration status code V: Valid registration. All codes
N80248 Cessna
172M
Fixed-wing, single engine Mtm Deland LLC
Deland, Florida
Standard 2019-05-01 ValidFAA registration status code V: Valid registration. All codes
N84339 Cessna
172K
Fixed-wing, single engine Burnt Pond Aero LLC
Ostrander, Ohio
Standard 2019-05-01 ValidFAA registration status code V: Valid registration. All codes
N1506T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2019-04-30 ValidFAA registration status code V: Valid registration. All codes
N3591F Cessna
172L
Fixed-wing, single engine Wolfe Robert G
West Columbia, South Carolina
Standard 2019-04-30 ValidFAA registration status code V: Valid registration. All codes
N9653W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-04-30 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.