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
N54180 Cessna
172P
Fixed-wing, single engine Flight School of Gwinnett INC
Lawrenceville, Georgia
Standard 2020-10-15 ValidFAA registration status code V: Valid registration. All codes
N54291 Cessna
172P
Fixed-wing, single engine Flight School of Gwinnett INC
Lawrenceville, Georgia
Standard 2020-10-15 ValidFAA registration status code V: Valid registration. All codes
N62405 Cessna
172P
Fixed-wing, single engine Flight School of Gwinnett INC
Lawrenceville, Georgia
Standard 2020-10-15 ValidFAA registration status code V: Valid registration. All codes
N737EC Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2020-10-15 ValidFAA registration status code V: Valid registration. All codes
N9818W Piper
PA-28-140
Fixed-wing, single engine 98X LLC
Caddo Mills, Texas
Standard 2020-10-15 ValidFAA registration status code V: Valid registration. All codes
N41978 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2020-10-14 ValidFAA registration status code V: Valid registration. All codes
N330HL Lumb Henry O Jr
VANS RV-6A
Fixed-wing, single engine Co-owned owner
Missouri
Experimental 2020-10-13 ValidFAA registration status code V: Valid registration. All codes
N6198F Cessna
172N
Fixed-wing, single engine Fox Aviation LLC
Glencoe, Alabama
Standard 2020-10-13 ValidFAA registration status code V: Valid registration. All codes
N54PR Cessna
172M
Fixed-wing, single engine Individual owner
South Dakota
Standard 2020-10-09 ValidFAA registration status code V: Valid registration. All codes
N6124D Cessna
172N
Fixed-wing, single engine Wegener Flying Services LLC
Indialantic, Florida
Standard 2020-10-09 ValidFAA registration status code V: Valid registration. All codes
N733WC Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2020-10-09 ValidFAA registration status code V: Valid registration. All codes
N20121 Cessna
172M
Fixed-wing, single engine Fly Maui LLC
Puunene, Hawaii
Standard 2020-10-08 ValidFAA registration status code V: Valid registration. All codes
N80278 Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2020-10-08 ValidFAA registration status code V: Valid registration. All codes
N92781 Piper
PA-12
Fixed-wing, single engine Aircraft Marketing & Leasing LLC
Fairbanks, Alaska
Restricted 2020-10-08 ValidFAA registration status code V: Valid registration. All codes
N6417R Piper
PA-28-140
Fixed-wing, single engine Bogey Aviation LLC
Piqua, Ohio
Standard 2020-10-07 ValidFAA registration status code V: Valid registration. All codes
N734UA Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-10-07 ValidFAA registration status code V: Valid registration. All codes
N1065P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2020-10-06 ValidFAA registration status code V: Valid registration. All codes
N36355 Piper
PA-28-161
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2020-10-06 ValidFAA registration status code V: Valid registration. All codes
N44245 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2020-10-06 ValidFAA registration status code V: Valid registration. All codes
N9250D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-10-06 ValidFAA registration status code V: Valid registration. All codes
N1086U Cessna
172M
Fixed-wing, single engine Hancock County Port & Harbor Commission
Kiln, Mississippi
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N5242R Cessna
172M
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N5427F Piper
PA-28-151
Fixed-wing, single engine Rebel Aviation INC
Liberty, Missouri
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N6917W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N704FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N733HA Cessna
172N
Fixed-wing, single engine Huerta Holdings INC
Santa Ana, California
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N1080J Guenther William
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2020-10-01 ValidFAA registration status code V: Valid registration. All codes
N6878B Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Standard 2020-10-01 ValidFAA registration status code V: Valid registration. All codes
N3ZR Reims Aviation
CESSNA F172M
Fixed-wing, single engine Withheld at owner's request
Standard 2020-09-30 ValidFAA registration status code V: Valid registration. All codes
N20132 Cessna
172M
Fixed-wing, single engine J & L Aviation LLC
Malta, New York
Standard 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N24RV Vangrunsven Richard E
RV-4
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N3309Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N57407 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Georgia
Restricted 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N6092D Piper
PA-18A 150
Fixed-wing, single engine Tanner Flying Service INC
Cortez, Colorado
Standard 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N22101 Cessna
172M
Fixed-wing, single engine Propwash Aviation LLC
Midland, Michigan
Standard 2020-09-28 ValidFAA registration status code V: Valid registration. All codes
N9355D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-09-28 ValidFAA registration status code V: Valid registration. All codes
N7009R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2020-09-25 ValidFAA registration status code V: Valid registration. All codes
N128HR Cessna
172M
Fixed-wing, single engine Derenick Aviation LLC
Aguadilla, Puerto Rico
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N3334E Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N4972G Cessna
172N
Fixed-wing, single engine Mcchuck Properties LLC
Pensacola, Florida
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N5013R Cessna
172M
Fixed-wing, single engine Barxbar Aviation LLC
Mesa, Arizona
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N6396D Cessna
172N
Fixed-wing, single engine Oc Flight Lessons LLC
Costa Mesa, California
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N6501W Piper
PA-28-140
Fixed-wing, single engine Stewarts Aircraft Service INC
Waynesville, Ohio
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N80270 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N84026 Cessna
172K
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N8791N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N881JB Blewster James C Col Usa Ret
RV4
Fixed-wing, single engine Individual owner
Washington
Experimental 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N12WK Yoder Miller R.
THORP T-18
Fixed-wing, single engine Individual owner
Florida
Experimental 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N2013A Beech
B19
Fixed-wing, single engine Musketeer LLC
Fayette, Alabama
Standard 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N2650P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Florida
Special flight permit 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N29520 Cessna
177
Fixed-wing, single engine Best Equipment Leasing LLC
Bakersfield, California
Standard 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N46556 Cessna
172K
Fixed-wing, single engine Bbh Aviation LLC
Peachtree City, Georgia
Standard 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N4691R Piper
PA-28-140
Fixed-wing, single engine Best Equipment Leasing LLC
Bakersfield, California
Standard 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N524JN Pettigrew Richard B
VANS ACFT RV6A
Fixed-wing, single engine Individual owner
California
Experimental 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N55372 Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
Florida
Standard 2020-09-23 ValidFAA registration status code V: Valid registration. All codes
N1915P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N55457 Cessna
172P
Fixed-wing, single engine Legend Air Lease LLC
Hurricane, Utah
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N5595F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N64213 Cessna
172M
Fixed-wing, single engine Ajc Aviation LLC
Boca Raton, Florida
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N6789J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N7242F Piper
PA-28-140
Fixed-wing, single engine Djair
Winchester, Virginia
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N7463R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N7518F Champion
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Multiple 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N8140D Piper
PA-22-160
Fixed-wing, single engine Individual owner
New York
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N818WC Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N9646W Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N9874V Cessna
172M
Fixed-wing, single engine Individual owner
West Virginia
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N20053 Cessna
172M
Fixed-wing, single engine Spanaflight LLC
Puyallup, Washington
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N4357J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N4493R Cessna
172M
Fixed-wing, single engine Barnstormers INC
Bemidji, Minnesota
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N4497R Cessna
172M
Fixed-wing, single engine Individual owner
Connecticut
Multiple 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N46188 Cessna
172I
Fixed-wing, single engine Air Venture Flight Center
Olive Branch, Mississippi
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N5335W Piper
PA-28
Fixed-wing, single engine Post 8 Flight Ops INC
Topeka, Kansas
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N5540W Piper
PA-28-160
Fixed-wing, single engine Air-Crete Constructions INC
Lake Elmo, Minnesota
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N7722G Cessna
172L
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N9807G Cessna
172L
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-09-21 ValidFAA registration status code V: Valid registration. All codes
N20531 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2020-09-18 ValidFAA registration status code V: Valid registration. All codes
N57353 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Arkansas
Standard 2020-09-18 ValidFAA registration status code V: Valid registration. All codes
N5893W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2020-09-18 ValidFAA registration status code V: Valid registration. All codes
N74998 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2020-09-18 ValidFAA registration status code V: Valid registration. All codes
N8714M Beech
23
Fixed-wing, single engine Cole Leonard O III
Sunrise Beach, Missouri
Standard 2020-09-18 ValidFAA registration status code V: Valid registration. All codes
N9840D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-09-18 ValidFAA registration status code V: Valid registration. All codes
N2388Z Beech
23
Fixed-wing, single engine Individual owner
Iowa
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N5965L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Withheld at owner's request
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N7543D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N8363R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N84429 Cessna
172K
Fixed-wing, single engine Avz Aviation of Tennessee INC
Knoxville, Tennessee
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N9584W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N9863U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-09-17 ValidFAA registration status code V: Valid registration. All codes
N10240 Maule
MX-7-160
Fixed-wing, single engine Co-owned owner
Montana
Standard 2020-09-16 ValidFAA registration status code V: Valid registration. All codes
N4434A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2020-09-16 ValidFAA registration status code V: Valid registration. All codes
N1830P Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N293CA Cessna
172M
Fixed-wing, single engine Choice Aviation LLC
Hamilton, Montana
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N2960P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N6621D Cessna
172N
Fixed-wing, single engine Costa Air Service LLC
Painted Post, New York
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N7069Q Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N7156B Piper
PA-22-150
Fixed-wing, single engine Jstream Lc
Sheridan, Wyoming
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N863BW Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Flying Cheetah LLC
Lakeland, Florida
Standard 2020-09-15 ValidFAA registration status code V: Valid registration. All codes
N21246 Cessna
172M
Fixed-wing, single engine Eastern Stearman INC Trustee
Leesburg, Virginia
Standard 2020-09-14 ValidFAA registration status code V: Valid registration. All codes
N2VT American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
New Jersey
Standard 2020-09-14 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.