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
N319EC Maule
MX-7-160
Fixed-wing, single engine Individual owner
New Jersey
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N4114X Aero Commander
100
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N5017R Cessna
172M
Fixed-wing, single engine R&R Leasing LLC
Fargo, North Dakota
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N78548 Cessna
172K
Fixed-wing, single engine Bakalar Flying Club INC
Columbus, Indiana
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N911NJ Pitts
SPECIAL
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N264L Smith Richard J
VANS ACFT RV-6A
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2017-11-17 ValidFAA registration status code V: Valid registration. All codes
N5986W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-11-17 ValidFAA registration status code V: Valid registration. All codes
N16TX Murphree David H
RV-6
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-11-16 ValidFAA registration status code V: Valid registration. All codes
N2055E Cessna
172N
Fixed-wing, single engine Aerowood Aviation LLC
Monroe, North Carolina
Standard 2017-11-16 ValidFAA registration status code V: Valid registration. All codes
N4091Z Piper
PA-18
Fixed-wing, single engine A G Sholton CO
Wasilla, Alaska
Standard 2017-11-16 ValidFAA registration status code V: Valid registration. All codes
N5920D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-11-16 ValidFAA registration status code V: Valid registration. All codes
N88227 Bellanca
7GCBC
Fixed-wing, single engine Acadian Dusters LLC
Church Point, Louisiana
Standard 2017-11-16 ValidFAA registration status code V: Valid registration. All codes
N22JU Robinson Helicopter
R22 BETA
Helicopter Pro-Drive INC
Wynona, Oklahoma
Standard 2017-11-15 ValidFAA registration status code V: Valid registration. All codes
N396LJ Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-11-15 ValidFAA registration status code V: Valid registration. All codes
N4349X Piper
PA-28-151
Fixed-wing, single engine Elon Aviation LLC
Burlington, North Carolina
Standard 2017-11-15 ValidFAA registration status code V: Valid registration. All codes
N10JR Perrucci Joseph S
RV-4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N113DL Lee Vernon R
PITTS S-1C
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N1305P Piper
PA-23
Fixed-wing, multi-engine Individual owner
California
Standard 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N6281C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N70RW Starduster
SA-300
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N9ZU Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N5088R Cessna
172M
Fixed-wing, single engine Glacier Equipment LLC
Wasilla, Alaska
Standard 2017-11-13 ValidFAA registration status code V: Valid registration. All codes
N5229W Piper
PA-28
Fixed-wing, single engine Individual owner
California
Standard 2017-11-13 ValidFAA registration status code V: Valid registration. All codes
N7308C Piper
PA-28-140
Fixed-wing, single engine Chandler Air Service INC
Chandler, Arizona
Standard 2017-11-13 ValidFAA registration status code V: Valid registration. All codes
N733CA Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-11-13 ValidFAA registration status code V: Valid registration. All codes
N8929L Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2017-11-13 ValidFAA registration status code V: Valid registration. All codes
N1212M Cessna
172L
Fixed-wing, single engine Individual owner
Louisiana
Standard 2017-11-09 ValidFAA registration status code V: Valid registration. All codes
N360BS Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-11-09 ValidFAA registration status code V: Valid registration. All codes
N4296H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-11-09 ValidFAA registration status code V: Valid registration. All codes
N37RN Raymond W Nilson
RV9A
Fixed-wing, single engine Co-owned owner
California
Experimental 2017-11-08 ValidFAA registration status code V: Valid registration. All codes
N41DM Piper
PA-23-160
Fixed-wing, multi-engine Mission Air LLC
Oklahoma City, Oklahoma
Standard 2017-11-08 ValidFAA registration status code V: Valid registration. All codes
N11WC Cwian Walter D
HATZ
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N2185E Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N3075K Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N53853 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
South Dakota
Standard 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N738SY Cessna
172N
Fixed-wing, single engine Van Anda Aviation LLC
Apopka, Florida
Standard 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N9585L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Eight5Lima LLC
Phoenix, Arizona
Standard 2017-11-07 ValidFAA registration status code V: Valid registration. All codes
N64420 Cessna
172M
Fixed-wing, single engine Individual owner
Maine
Standard 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N6613W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N12916 Cessna
172M
Fixed-wing, single engine Jacobs Airways INC
Wilson, Wisconsin
Standard 2017-11-03 ValidFAA registration status code V: Valid registration. All codes
N2357Z Piper
PA-18-150
Fixed-wing, single engine Usda Aphis Ws Atoc
Cedar City, Utah
Standard 2017-11-03 ValidFAA registration status code V: Valid registration. All codes
N91187 Piper
PA-18-150
Fixed-wing, single engine Usda Aphis Ws Atoc
Cedar City, Utah
Standard 2017-11-03 ValidFAA registration status code V: Valid registration. All codes
N110KW Ference John William
RV 4
Fixed-wing, single engine Individual owner
Ohio
Experimental 2017-11-02 ValidFAA registration status code V: Valid registration. All codes
N61RM Mckenna Reginald B
RV6-A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-11-02 ValidFAA registration status code V: Valid registration. All codes
N1732T Piper
PA-28-140
Fixed-wing, single engine Glasgow Construction Company INC
Guin, Alabama
Standard 2017-11-01 ValidFAA registration status code V: Valid registration. All codes
N738RU Cessna
172N
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-11-01 ValidFAA registration status code V: Valid registration. All codes
N7579D Piper
PA-18-150
Fixed-wing, single engine Nutter Teri L
Glennallen, Alaska
Restricted 2017-11-01 ValidFAA registration status code V: Valid registration. All codes
N1319R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Florida
Standard 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N284JD Davis James E
DAVIS SH-G1
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N46251 Cessna
172I
Fixed-wing, single engine Individual owner
Arkansas
Standard 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N489J Giebelhouse Jeffrey
RV 4
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N5499W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Florida
Standard 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N6512W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N8431L Cessna
172I
Fixed-wing, single engine Dsr Cherokee 180 LLC
Dallas, Texas
Standard 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N35332 Cessna
172I
Fixed-wing, single engine Individual owner
Colorado
Standard 2017-10-30 ValidFAA registration status code V: Valid registration. All codes
N3VR Ebbert Robert
RV-3-E
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-10-30 ValidFAA registration status code V: Valid registration. All codes
N84422 Cessna
172K
Fixed-wing, single engine Dhr Investments LLC
Beaumont, Texas
Standard 2017-10-30 ValidFAA registration status code V: Valid registration. All codes
N5911W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-26 ValidFAA registration status code V: Valid registration. All codes
N72CV Piper
PA-22-160
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-10-26 ValidFAA registration status code V: Valid registration. All codes
N75722 Cessna
172N
Fixed-wing, single engine Pt Real Estate INC
Port Hadlock, Washington
Standard 2017-10-26 ValidFAA registration status code V: Valid registration. All codes
N270CC Piper
PA-28-161
Fixed-wing, single engine Euro 2000 INC
Merritt Island, Florida
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N833TB Piper
PA-28-161
Fixed-wing, single engine Euro 2000 INC
Merritt Island, Florida
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N600W Wilcoxon
CVJETKOVIC CA65
Fixed-wing, single engine Port of Tillamook Bay
Tillamook, Oregon
Experimental 2017-10-24 ValidFAA registration status code V: Valid registration. All codes
N7151R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2017-10-24 ValidFAA registration status code V: Valid registration. All codes
N7587W Piper
PA-28-180
Fixed-wing, single engine Individual owner
Kansas
Standard 2017-10-24 ValidFAA registration status code V: Valid registration. All codes
N79024 Cessna
172K
Fixed-wing, single engine Jwp Flying Services LLC
Chatfield, Minnesota
Standard 2017-10-24 ValidFAA registration status code V: Valid registration. All codes
N6353D Cessna
172N
Fixed-wing, single engine Deland Aviation LLC
Deland, Florida
Standard 2017-10-23 ValidFAA registration status code V: Valid registration. All codes
N64154 Cessna
172M
Fixed-wing, single engine Jw Skyhawk LLC
Austin, Texas
Standard 2017-10-23 ValidFAA registration status code V: Valid registration. All codes
N1452U Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2017-10-20 ValidFAA registration status code V: Valid registration. All codes
N807DA Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-20 ValidFAA registration status code V: Valid registration. All codes
N40965 Piper
PA-28-151
Fixed-wing, single engine Portsmouth Flying Club LLC
Epsom, New Hampshire
Standard 2017-10-19 ValidFAA registration status code V: Valid registration. All codes
N41262 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2017-10-19 ValidFAA registration status code V: Valid registration. All codes
N4320M Piper
PA-12
Fixed-wing, single engine Koinzan Flying Service INC
Elgin, Nebraska
Restricted 2017-10-19 ValidFAA registration status code V: Valid registration. All codes
N54661 Cessna
172P
Fixed-wing, single engine Executive Flyers INC
Sacramento, California
Standard 2017-10-19 ValidFAA registration status code V: Valid registration. All codes
N1598J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N2406J Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N34HD Cessna
172P
Fixed-wing, single engine Wifa (Washington International Flight Academy) LLC
Gaithersburg, Maryland
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N35569 Cessna
172I
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N4364J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Utah
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N55398 Cessna
172P
Fixed-wing, single engine Three Wire LLC
Portland, Oregon
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N734DC Cessna
172N
Fixed-wing, single engine Individual owner
Idaho
Standard 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N9455 Chorley William
COZY III
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N100TN Dobbs George
COOT A
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2017-10-17 ValidFAA registration status code V: Valid registration. All codes
N12668 Cessna
172M
Fixed-wing, single engine Rebel Aviation INC
Liberty, Missouri
Standard 2017-10-17 ValidFAA registration status code V: Valid registration. All codes
N6195D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-10-17 ValidFAA registration status code V: Valid registration. All codes
N3941K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N4145J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N73441 Cessna
172M
Fixed-wing, single engine Individual owner
Hawaii
Standard 2017-10-13 ValidFAA registration status code V: Valid registration. All codes
N12236 Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2017-10-12 ValidFAA registration status code V: Valid registration. All codes
N6557W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2017-10-12 ValidFAA registration status code V: Valid registration. All codes
N7383J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2017-10-12 ValidFAA registration status code V: Valid registration. All codes
N298PW Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-10-11 ValidFAA registration status code V: Valid registration. All codes
N4273J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-10 ValidFAA registration status code V: Valid registration. All codes
N7345G Cessna
172K
Fixed-wing, single engine Jacks Air Service INC
Greenville, Maine
Standard 2017-10-10 ValidFAA registration status code V: Valid registration. All codes
N75897 Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2017-10-10 ValidFAA registration status code V: Valid registration. All codes
N8795N Piper
PA-28-140
Fixed-wing, single engine Cycle-Moto INC
Gilbert, Arizona
Standard 2017-10-10 ValidFAA registration status code V: Valid registration. All codes
N7055Q Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-10-06 ValidFAA registration status code V: Valid registration. All codes
N11626 Cessna
150L
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2017-10-05 ValidFAA registration status code V: Valid registration. All codes
N36411 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Arkansas
Standard 2017-10-05 ValidFAA registration status code V: Valid registration. All codes
N44509 Piper
PA-28-151
Fixed-wing, single engine Central Washington University
Ellensburg, Washington
Standard 2017-10-05 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.