The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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
N3119Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N3678X Aero Commander
100
Fixed-wing, single engine S&S Aircraft LLC
Cushing, Oklahoma
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N374D Carlberg
WITTMAN TAILWIND W-8
Fixed-wing, single engine Wadel Edwin K
Millen, Georgia
Experimental 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N4855G Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N4974G Cessna
172N
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N53107 Cessna
172P
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N7243V Piper
PA-12
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N737QF Cessna
172N
Fixed-wing, single engine Wings Over L A Aviation LLC
West Hills, California
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N8015B Robinson Helicopter
R22 BETA
Helicopter Elite Choppers Nc LLC
Winston Salem, North Carolina
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N89RB Barden
THORP T-18
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N9729W Piper
PA-28-140
Fixed-wing, single engine Artesian Hills Aviation LLC
Twin Lake, Michigan
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N113BC Campbell Reid H
SUPER CROW RAVEN
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N53491 Cessna
172P
Fixed-wing, single engine Crossbrook LLC
Willoughby, Ohio
Standard 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N771MR Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Multiple 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N80298 Cessna
172M
Fixed-wing, single engine N80298 LLC
Miami, Florida
Standard 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N81SM American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N1764T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N3462Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N4997P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N6144W Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Dakota
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N738GM Cessna
172N
Fixed-wing, single engine Nesher Aviation II LLC
Jacksonville, Florida
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N7753G Cessna
172L
Fixed-wing, single engine Cw Enterprise LLC
Jewell Ridge, Virginia
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N891GP Piper
PA-28-140
Fixed-wing, single engine Hancock Aircraft Sales LLC
Baton Rouge, Louisiana
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N8928 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N91FT Champion
7ECA
Fixed-wing, single engine Individual owner
Maine
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N99712 Cessna
172P
Fixed-wing, single engine Nesher Aviation II LLC
Jacksonville, Florida
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N12880 Cessna
172M
Fixed-wing, single engine Aerial Holdings LLC
Lewes, Delaware
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N3578K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N4152J Piper
PA-28-140
Fixed-wing, single engine Paulson Kim A
Devils Lake, North Dakota
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N64307 Cessna
172M
Fixed-wing, single engine Flywyo LLC
Kalispell, Montana
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N670SB Lippert Barry M
RV-6A
Fixed-wing, single engine Danles Enterprises LLC
Solvang, California
Experimental 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N7529R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N9219H Cessna
172M
Fixed-wing, single engine Kful Flyers Foundation INC
Fullerton, California
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N6869W Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N84RP Parker Raymond L
VANS RV-6
Fixed-wing, single engine Co-owned owner
Oklahoma
Experimental 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N8656G Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Rut-Roh Flyers LLC
Greer, South Carolina
Standard 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N98410 Cessna
172P
Fixed-wing, single engine Mbk Leasing and Consulting LLC
Lakeland, Florida
Standard 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N12P Scherrer
STARDUSTER TWO
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2025-02-16 ValidFAA registration status code V: Valid registration. All codes
N33077 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-02-16 ValidFAA registration status code V: Valid registration. All codes
N5144V Morrisey
2150A
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-02-16 ValidFAA registration status code V: Valid registration. All codes
N52286 Cessna
172P
Fixed-wing, single engine Whitair LLC
Henderson, Nevada
Standard 2025-02-16 ValidFAA registration status code V: Valid registration. All codes
N9893Q Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2025-02-16 ValidFAA registration status code V: Valid registration. All codes
N5509F Piper
PA-28-140
Fixed-wing, single engine Ahs Aero LLC
Leo, Indiana
Standard 2025-02-15 ValidFAA registration status code V: Valid registration. All codes
N914AZ Cessna
172P
Fixed-wing, single engine N969Az LLC
Miami, Florida
Standard 2025-02-15 ValidFAA registration status code V: Valid registration. All codes
N9447L Cessna
172P
Fixed-wing, single engine Airplane and Drone Flight Instruction LLC
Orlando, Florida
Multiple 2025-02-15 ValidFAA registration status code V: Valid registration. All codes
N9911Y Champion
7GCB
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-02-15 ValidFAA registration status code V: Valid registration. All codes
N164BG Bede
BD-4
Fixed-wing, single engine Individual owner
New York
Experimental 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N20555 Cessna
172M
Fixed-wing, single engine Buiqui Aerospace CORP
Kissimmee, Florida
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N222GH Robinson Helicopter
R22 BETA
Helicopter Concho Aviation LLC
Sterling City, Texas
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N2912P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N508TH Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Maine
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N733WE Cessna
172N
Fixed-wing, single engine Airwaves Nsb LLC
New Smyrna Beach, Florida
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N7845M Piper
PA-12
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N98257 Piper
PA-28-140
Fixed-wing, single engine Fly High Aviation LLC
Miami, Florida
Standard 2025-02-14 ValidFAA registration status code V: Valid registration. All codes
N3183Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2025-02-13 ValidFAA registration status code V: Valid registration. All codes
N3744P Piper
PA-22
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-13 ValidFAA registration status code V: Valid registration. All codes
N40045 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-02-13 ValidFAA registration status code V: Valid registration. All codes
N4619R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-13 ValidFAA registration status code V: Valid registration. All codes
N8803D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-02-13 ValidFAA registration status code V: Valid registration. All codes
N12441 Cessna
172M
Fixed-wing, single engine Jrm Wings LLC
Farmington, Utah
Restricted 2025-02-12 ValidFAA registration status code V: Valid registration. All codes
N3255Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-02-12 ValidFAA registration status code V: Valid registration. All codes
N584F Phinney Richard C
GS-1
Fixed-wing, single engine Individual owner
Nevada
Experimental 2025-02-12 ValidFAA registration status code V: Valid registration. All codes
N73324 Cessna
172M
Fixed-wing, single engine Gulf Atlantic Airways DBA
Gainesville, Florida
Standard 2025-02-12 ValidFAA registration status code V: Valid registration. All codes
N9556D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-02-12 ValidFAA registration status code V: Valid registration. All codes
N4374P Piper
PA-23-160
Fixed-wing, multi-engine Dodson International Parts INC
Rantoul, Kansas
Standard 2025-02-11 ValidFAA registration status code V: Valid registration. All codes
N5127Y Piper
PA-18-150
Fixed-wing, single engine Airborne Extreme LLC
Wasilla, Alaska
Standard 2025-02-11 ValidFAA registration status code V: Valid registration. All codes
N5249D Cessna
172N
Fixed-wing, single engine Quicksilver Skycraft LLC
Langley, Washington
Standard 2025-02-11 ValidFAA registration status code V: Valid registration. All codes
N54355 Cessna
172P
Fixed-wing, single engine Elizabeth City State University
Elizabeth City, North Carolina
Standard 2025-02-11 ValidFAA registration status code V: Valid registration. All codes
N76HK Piper
PA-23-160
Fixed-wing, multi-engine Dodson International Parks INC
Rantoul, Kansas
Standard 2025-02-11 ValidFAA registration status code V: Valid registration. All codes
N98DX Cessna
172N
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2025-02-11 ValidFAA registration status code V: Valid registration. All codes
N4131X Aero Commander
100
Fixed-wing, single engine Elite Fleet Jacksonville LLC
Jacksonville, Florida
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N482AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N7560D Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N8663D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N9477L Cessna
172P
Fixed-wing, single engine Slipstream Aviation LLC
Carrollton, Georgia
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N5328K Cessna
172P
Fixed-wing, single engine Avanna LLC
Shaw Island, Washington
Standard 2025-02-09 ValidFAA registration status code V: Valid registration. All codes
N57020 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-02-09 ValidFAA registration status code V: Valid registration. All codes
N707HC Cashwell Harry W
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-02-09 ValidFAA registration status code V: Valid registration. All codes
N5759W Piper
PA-28-160
Fixed-wing, single engine Chimera Air INC
Maumee, Ohio
Standard 2025-02-08 ValidFAA registration status code V: Valid registration. All codes
N6669W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-08 ValidFAA registration status code V: Valid registration. All codes
N1850P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N28WJ Cessna
172N
Fixed-wing, single engine Aerinova INC
Mattoon, Illinois
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N2970E Cessna
172N
Fixed-wing, single engine Sparrowhawk Aviation
Manvel, Texas
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N52289 Cessna
172P
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N65813 Cessna
172P
Fixed-wing, single engine Northwest Wings LLC
Hillsboro, Oregon
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N734KU Cessna
172N
Fixed-wing, single engine Northwest Wings LLC
Hillsboro, Oregon
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N8316N Robinson Helicopter
R22 BETA
Helicopter N8316N LLC
Rehoboth Beach, Delaware
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N1004M Cessna
172L
Fixed-wing, single engine Individual owner
Idaho
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N12448 Cessna
172M
Fixed-wing, single engine Right Rudder LLC
Rexburg, Idaho
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N2293P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Florida
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N29321 Cessna
177
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N35467 Cessna
172I
Fixed-wing, single engine Brown Wilson J
Statesville, North Carolina
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N4247Q Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N5728W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Florida
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N733MG Cessna
172N
Fixed-wing, single engine Bend Aircraft Mechanics LLC
Bend, Oregon
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N734XY Cessna
172N
Fixed-wing, single engine Bend Aircraft Mechanics LLC
Bend, Oregon
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N739SC Cessna
172N
Fixed-wing, single engine Bahn Ha LLC
Denver, Colorado
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N1594U Cessna
172M
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-02-05 ValidFAA registration status code V: Valid registration. All codes
N2526W Wassom Warren Clarke
RV-6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-02-05 ValidFAA registration status code V: Valid registration. All codes
N2883T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-02-05 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.