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
N1966F Cessna
172N
Fixed-wing, single engine D & S Aviation LLC
Spring, Texas
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N2852A Piper
PA-28-161
Fixed-wing, single engine Redhawk Flyers
Palos Park, Illinois
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N40037 Piper
PA-28-161
Fixed-wing, single engine Pars Avn CORP
Wilmington, Delaware
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N5156W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Louisiana
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N97FR Cessna
172P
Fixed-wing, single engine Individual owner
New York
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N9837W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N5058B Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2018-10-02 ValidFAA registration status code V: Valid registration. All codes
N84819 Cessna
172K
Fixed-wing, single engine Jungmeyer and Bruns Aviation LLC
Lees Summit, Missouri
Standard 2018-10-02 ValidFAA registration status code V: Valid registration. All codes
N606ER Beech
19A
Fixed-wing, single engine Individual owner
Utah
Standard 2018-10-01 ValidFAA registration status code V: Valid registration. All codes
N739MY Cessna
172N
Fixed-wing, single engine Sky Safety INC
San Antonio, Texas
Standard 2018-10-01 ValidFAA registration status code V: Valid registration. All codes
N7001D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2018-09-28 ValidFAA registration status code V: Valid registration. All codes
N4TA Cessna
172M
Fixed-wing, single engine Columbia Aviation INC
Columbia, Tennessee
Standard 2018-09-27 ValidFAA registration status code V: Valid registration. All codes
N55497 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2018-09-27 ValidFAA registration status code V: Valid registration. All codes
N6748W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2018-09-27 ValidFAA registration status code V: Valid registration. All codes
N9639D Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Multiple 2018-09-27 ValidFAA registration status code V: Valid registration. All codes
N113BA Cessna
172M
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N2097U Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N41498 Piper
PA-28-151
Fixed-wing, single engine G&M Aircraft INC
Wheat Ridge, Colorado
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N5357J Cessna
172N
Fixed-wing, single engine Arizona Bravo Lima LLC
Phoenix, Arizona
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N61769 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N6265Z Piper
PA-25
Fixed-wing, single engine Aerial Banners INC
Pembroke Pines, Florida
Restricted 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N1205T Piper
PA-28-140
Fixed-wing, single engine American Aircraft Management LLC
Irving, Texas
Standard 2018-09-25 ValidFAA registration status code V: Valid registration. All codes
N1380A Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2018-09-25 ValidFAA registration status code V: Valid registration. All codes
N172EP Cessna
172N
Fixed-wing, single engine Cp Aviation INC
Santa Paula, California
Standard 2018-09-25 ValidFAA registration status code V: Valid registration. All codes
N4148E Piper
PA-18-150
Fixed-wing, single engine Individual owner
Tennessee
Standard 2018-09-25 ValidFAA registration status code V: Valid registration. All codes
N1377E Cessna
172N
Fixed-wing, single engine Fly Barely LLC
Manitowoc, Wisconsin
Standard 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N2900Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
California
Standard 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N355SH Robinson
PIEL EMERAUDE
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N36409 Piper
PA-28-161
Fixed-wing, single engine Wire Wonder INC
New York, New York
Standard 2018-09-24 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N44836 Piper
PA-28-161
Fixed-wing, single engine Monadnock Aviation INC
Keene, New Hampshire
Standard 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N7543G Cessna
172L
Fixed-wing, single engine True Course LLC
West Monroe, New York
Standard 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N91FH Robinson Helicopter
R22 BETA
Helicopter P3 Aviation Services LLC
Wilmington, Delaware
Standard 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N7111R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2018-09-21 ValidFAA registration status code V: Valid registration. All codes
N79445 Cessna
172K
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-09-21 ValidFAA registration status code V: Valid registration. All codes
N2900X Cessna
177
Fixed-wing, single engine Individual owner
Michigan
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N37500 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Alabama
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N4675R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N50067 Cessna
172N
Fixed-wing, single engine Prop Wash Aviation LLC
Hayward, Wisconsin
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N7145Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N969JH Cessna
172N
Fixed-wing, single engine Jls Aviation LLC DBA
Fredericksburg, Virginia
Standard 2018-09-20 ValidFAA registration status code V: Valid registration. All codes
N35662 Cessna
172I
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2018-09-19 ValidFAA registration status code V: Valid registration. All codes
N741GS Cessna
172K
Fixed-wing, single engine Reform Friendly Flyers LLC
Buhl, Alabama
Standard 2018-09-19 ValidFAA registration status code V: Valid registration. All codes
N82486 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Restricted 2018-09-19 ValidFAA registration status code V: Valid registration. All codes
N581ES Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N6394N Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N7803D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N800BP Robinson Helicopter
R22 BETA
Helicopter Jet Fighter Sales LLC
Rehoboth Beach, Delaware
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N945T Cessna
172M
Fixed-wing, single engine C R Transport INC
Wilmington, Delaware
Standard 2018-09-18 ValidFAA registration status code V: Valid registration. All codes
N13278 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2018-09-17 ValidFAA registration status code V: Valid registration. All codes
N2468T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2018-09-17 ValidFAA registration status code V: Valid registration. All codes
N38914 Piper
PA-28-161
Fixed-wing, single engine Acadian Aviation Pilot Training Centre INC
Lafayette, Louisiana
Standard 2018-09-17 ValidFAA registration status code V: Valid registration. All codes
N4325F Piper
PA-28-151
Fixed-wing, single engine Ireland David
Eatonville, Washington
Standard 2018-09-17 ValidFAA registration status code V: Valid registration. All codes
N270SA Piper
PA-28-140
Fixed-wing, single engine Sundance Airport FBO LLC
Yukon, Oklahoma
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N29MX Cessna
172M
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N4211Q Cessna
172L
Fixed-wing, single engine Jwmp Air INC
East Moriches, New York
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N4857T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N5103H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N5240T Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N5306E Cessna
172N
Fixed-wing, single engine N5306E LLC
Ashburn, Virginia
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N733NW Cessna
172N
Fixed-wing, single engine Individual owner
Mississippi
Standard 2018-09-15 ValidFAA registration status code V: Valid registration. All codes
N12899 Cessna
172M
Fixed-wing, single engine Co-owned owner
Utah
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N1708P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N29596 Cessna
177
Fixed-wing, single engine Individual owner
Nevada
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N3052Z Piper
PA-22-160
Fixed-wing, single engine Summer Aviation LLC
Eden Prairie, Minnesota
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N7599G Cessna
172L
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N871F Funk Kevin M.D.
COZY MARK 4
Fixed-wing, single engine Individual owner
Florida
Experimental 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N9495H Cessna
172M
Fixed-wing, single engine Nelson Flying Service LLC
Lansford, North Dakota
Standard 2018-09-14 ValidFAA registration status code V: Valid registration. All codes
N10CK Mason Paul A
LONG EZ
Fixed-wing, single engine Individual owner
New York
Experimental 2018-09-13 ValidFAA registration status code V: Valid registration. All codes
N55542 Piper
PA-28-140
Fixed-wing, single engine Colorado Cherokee Flyers LLC
Boulder, Colorado
Standard 2018-09-13 ValidFAA registration status code V: Valid registration. All codes
N61680 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2018-09-13 ValidFAA registration status code V: Valid registration. All codes
N80090 Cessna
172M
Fixed-wing, single engine Cloud Hoppers II LLC
Chicago, Illinois
Standard 2018-09-13 ValidFAA registration status code V: Valid registration. All codes
N2319J Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2018-09-12 ValidFAA registration status code V: Valid registration. All codes
N4381P Piper
PA-23-160
Fixed-wing, multi-engine Chase 13 LLC
Wilmington, Delaware
Standard 2018-09-12 ValidFAA registration status code V: Valid registration. All codes
N7717G Cessna
172L
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2018-09-12 ValidFAA registration status code V: Valid registration. All codes
N2967E Cessna
172N
Fixed-wing, single engine Bme N2967E LLC
Clearwater, Florida
Standard 2018-09-11 ValidFAA registration status code V: Valid registration. All codes
N91105 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2018-09-11 ValidFAA registration status code V: Valid registration. All codes
N9647W Piper
PA-28-140
Fixed-wing, single engine Airplanes Plus INC
Marathon, Florida
Standard 2018-09-11 ValidFAA registration status code V: Valid registration. All codes
N3227M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-09-10 ValidFAA registration status code V: Valid registration. All codes
N5652 Johnson
STARDUSTER TVO RGJ6-
Fixed-wing, single engine Co-owned owner
Pennsylvania
Experimental 2018-09-10 ValidFAA registration status code V: Valid registration. All codes
N6348W Piper
PA-28-140
Fixed-wing, single engine Marquette County Flying Club INC
Marquette, Michigan
Standard 2018-09-10 ValidFAA registration status code V: Valid registration. All codes
N9134L Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-09-10 ValidFAA registration status code V: Valid registration. All codes
N44PG Good Paul M
RV-4
Fixed-wing, single engine Co-owned owner
Washington
Experimental 2018-09-08 ValidFAA registration status code V: Valid registration. All codes
N5662U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2018-09-08 ValidFAA registration status code V: Valid registration. All codes
N31PC Piper
PA-23-160
Fixed-wing, multi-engine Flight World INC
San Juan, Puerto Rico
Standard 2018-09-07 ValidFAA registration status code V: Valid registration. All codes
N33092 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2018-09-07 ValidFAA registration status code V: Valid registration. All codes
N6849B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2018-09-07 ValidFAA registration status code V: Valid registration. All codes
N7250J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2018-09-07 ValidFAA registration status code V: Valid registration. All codes
N941MP Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nevada
Experimental 2018-09-07 ValidFAA registration status code V: Valid registration. All codes
N204SX Wiebe David G
WIEBE SWICK CLP WNG
Fixed-wing, single engine Wiebe Victoria S
El Dorado, Kansas
Experimental 2018-09-06 ValidFAA registration status code V: Valid registration. All codes
N172LF Cessna
172N
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2018-09-05 ValidFAA registration status code V: Valid registration. All codes
N2277V Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2018-09-05 ValidFAA registration status code V: Valid registration. All codes
N246ND Piper
PA-28-161
Fixed-wing, single engine Global Aviation Center INC
Farmingdale, New York
Standard 2018-09-05 ValidFAA registration status code V: Valid registration. All codes
N38952 Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2018-09-05 ValidFAA registration status code V: Valid registration. All codes
N211JK American
AA-5
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N221BA Adams Robert E
BA4
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N27148 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Michigan
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N4154Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Multiple 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N5890D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N7681S Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N8276N Piper
PA-28-161
Fixed-wing, single engine Individual owner
Missouri
Standard 2018-09-04 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.