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
N5646U Piper
PA-28-140
Fixed-wing, single engine Pn4 Aviation Holdings LLC
Bishop, California
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N733EP Cessna
172N
Fixed-wing, single engine Skytec Aviation LLC
Boynton Beach, Florida
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N733ZY Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N79092 Cessna
172K
Fixed-wing, single engine Aero Quest LLC DBA
Olive Branch, Mississippi
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N8657V Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N9009H Cessna
172M
Fixed-wing, single engine Connell Flying Service INC
Decorah, Iowa
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N1011N Cessna
172L
Fixed-wing, single engine Blue Skies Aircraft LLC
Zephyrhills, Florida
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N179SW Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N320ED Dalbec Edward D
LANCAIR 320
Fixed-wing, single engine Individual owner
Kansas
Experimental 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N3317M Piper
PA-12
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N4123J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N444JL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N55730 Piper
PA-28-140
Fixed-wing, single engine K&D Ip LLC
Chicago, Illinois
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N65107 Cessna
172P
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N6721J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N2212P Piper
PA-23
Fixed-wing, multi-engine Co-owned owner
Michigan
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N2513M Piper
PA-12
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N4354P Piper
PA-23-160
Fixed-wing, multi-engine Apache Twin Rental LLC
Harrisonville, Missouri
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N5029W Piper
PA-28-160
Fixed-wing, single engine Jaycor Foundation
Buirr Ridge, Illinois
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N5208T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N54385 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N78598 Cessna
172K
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N7869D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N83208 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Illinois
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N95071 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N3432K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N65698 Cessna
172P
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N7141L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Wamar Enterprises LLC
Eureka, Missouri
Standard 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N734XM Cessna
172N
Fixed-wing, single engine Tri Star Cac LLC
Plano, Texas
Standard 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N80964 Piper
PA-28-161
Fixed-wing, single engine Three Wing Flight School LLC
Stratford, Connecticut
Standard 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N3715Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Iowa
Multiple 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N6403W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N65518 Cessna
172P
Fixed-wing, single engine Tk Equipment LLC
Brownsburg, Indiana
Standard 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N8231A Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N679DL Cessna
172K
Fixed-wing, single engine Blink Squirrel Aviation LLC
Cherokee, Iowa
Standard 2020-10-28 ValidFAA registration status code V: Valid registration. All codes
N738TQ Cessna
172N
Fixed-wing, single engine Lake Travis Flyers LLC
Granite Shoals, Texas
Standard 2020-10-28 ValidFAA registration status code V: Valid registration. All codes
N7403J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2020-10-28 ValidFAA registration status code V: Valid registration. All codes
N8244X Ellsworth J/Ellsworth S
MURPHY REBEL
Fixed-wing, single engine Destiny Ministries International INC
Kissimmee, Florida
Experimental 2020-10-27 ValidFAA registration status code V: Valid registration. All codes
N932P Mayer Joseph
RV4
Fixed-wing, single engine Individual owner
Illinois
Experimental 2020-10-27 ValidFAA registration status code V: Valid registration. All codes
N9854U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2020-10-27 ValidFAA registration status code V: Valid registration. All codes
N1504A Piper
PA-20
Fixed-wing, single engine Individual owner
Iowa
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N175RA American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
California
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N314EP Patterson Ernest L
RV-6A
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N4733D Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N4793E Cessna
172N
Fixed-wing, single engine Individual owner
New Mexico
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N5219R Cessna
172M
Fixed-wing, single engine Co-owned owner
Missouri
Multiple 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N46027 Cessna
172I
Fixed-wing, single engine Individual owner
New York
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N5080W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Arizona
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N5246W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N538PG Grella Pasquale
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N734TF Cessna
172N
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N8248T Piper
PA-28-161
Fixed-wing, single engine Jefferson City Aviation INC
Jefferson City, Missouri
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N98082 Piper
PA-28-140
Fixed-wing, single engine American Classic Flying Club LLC
Waterville, Maine
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N2457J Piper
PA-18-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2020-10-23 ValidFAA registration status code V: Valid registration. All codes
N78458 Cessna
172K
Fixed-wing, single engine Heffley and Ruiz LLC
Waco, Texas
Standard 2020-10-23 ValidFAA registration status code V: Valid registration. All codes
N9002H Cessna
172M
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2020-10-23 ValidFAA registration status code V: Valid registration. All codes
N4019Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Louisiana
Restricted 2020-10-22 ValidFAA registration status code V: Valid registration. All codes
N43JG Gordon James A
VANS RV-4
Fixed-wing, single engine Individual owner
Ohio
Experimental 2020-10-22 ValidFAA registration status code V: Valid registration. All codes
N5952L American
AA-1
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-10-22 ValidFAA registration status code V: Valid registration. All codes
N6758H Cessna
172M
Fixed-wing, single engine Gorge Winds Aviation INC
Fairview, Oregon
Standard 2020-10-22 ValidFAA registration status code V: Valid registration. All codes
N766W Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-10-22 ValidFAA registration status code V: Valid registration. All codes
N9433E Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2020-10-22 ValidFAA registration status code V: Valid registration. All codes
N2LB Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N35386 Cessna
172I
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N4052V Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
California
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N5884U Piper
PA-28-140
Fixed-wing, single engine B & R Aircraft LLC
Wadsworth, Ohio
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N73383 Cessna
172M
Fixed-wing, single engine Ludington Rental LLC
Ludington, Michigan
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N737VV Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N738GE Cessna
172N
Fixed-wing, single engine Ps Aviation INC
Granada, Minnesota
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N80784 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N87HP Aviat Aircraft Inc
A-1B
Fixed-wing, single engine Individual owner
Texas
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N907RU Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N969TT Cessna
172M
Fixed-wing, single engine Smoketown Flight Center LLC
Smoketown, Pennsylvania
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N4882A Piper
PA-18A
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N5485H Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N5698W Piper
PA-28-160
Fixed-wing, single engine Burkett Aviation LLC
Hampstead, North Carolina
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N63SM Smith Ray H Jr
RV-4
Fixed-wing, single engine Individual owner
Kansas
Experimental 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N726GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine South Texas Air Force LLC
Mission, Texas
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N73910 Cessna
172N
Fixed-wing, single engine Arispe Aviation LLC
Mckinney, Texas
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N829JB Champion
7GCAA
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N9067D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2020-10-20 ValidFAA registration status code V: Valid registration. All codes
N129SY Cessna
172N
Fixed-wing, single engine Individual owner
Maine
Standard 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N4044G Piper
PA-18A 150
Fixed-wing, single engine Flyrs Field
Anchorage, Alaska
Standard 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N73307 Cessna
172M
Fixed-wing, single engine Ftk Aviation LLC
Evans, Georgia
Standard 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N78RF Piper
PA-22-160
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N919RF Piper
PA-28-161
Fixed-wing, single engine Region Flyers LLC
Valparaiso, Indiana
Standard 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N929BY York William H
RV6
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N100TH Hedding Tim
EAA BIPLANE P2
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-10-17 ValidFAA registration status code V: Valid registration. All codes
N238LS South Florida Ultralights Inc
VANS RV-9A
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2020-10-17 ValidFAA registration status code V: Valid registration. All codes
N322CT Piper
PA-28-161
Fixed-wing, single engine Grover Michael P
Palm Coast, Florida
Standard 2020-10-17 ValidFAA registration status code V: Valid registration. All codes
N43154 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2020-10-17 ValidFAA registration status code V: Valid registration. All codes
N7770C Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-10-17 ValidFAA registration status code V: Valid registration. All codes
N8616D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Florida
Standard 2020-10-17 ValidFAA registration status code V: Valid registration. All codes
N156AS Beech
B19
Fixed-wing, single engine Individual owner
Washington
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N2496P Piper
PA-18A
Fixed-wing, single engine Tri M LLC
Nikiski, Alaska
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N6814J Piper
PA-28-140
Fixed-wing, single engine Tavzel Aviation LLC
Portland, Indiana
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N75985 Cessna
172N
Fixed-wing, single engine Co-owned owner
Washington
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N8218C Piper
PA-28-151
Fixed-wing, single engine Stargazer Aviation LLC
Clearwater, Florida
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N9359D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N12973 Cessna
172M
Fixed-wing, single engine Mor Aviation LLC
Gaithersburg, Maryland
Standard 2020-10-15 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.