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
N22395 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2017-03-16 ValidFAA registration status code V: Valid registration. All codes
N333PH Robinson Helicopter
R22 BETA
Helicopter J&L Management Group LLC
Lewes, Delaware
Standard 2017-03-16 ValidFAA registration status code V: Valid registration. All codes
N6743H Cessna
172M
Fixed-wing, single engine Cape Fear Aviation Maintenance LLC
Fayetteville, North Carolina
Standard 2017-03-16 ValidFAA registration status code V: Valid registration. All codes
N75794 Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-03-16 ValidFAA registration status code V: Valid registration. All codes
N8290S Cessna
150F
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-03-16 ValidFAA registration status code V: Valid registration. All codes
N9454C Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2017-03-16 ValidFAA registration status code V: Valid registration. All codes
N13376 Cessna
172M
Fixed-wing, single engine Beahan Timothy Steven
Tampa, Florida
Standard 2017-03-15 ValidFAA registration status code V: Valid registration. All codes
N1725J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-03-15 ValidFAA registration status code V: Valid registration. All codes
N3214D Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2017-03-15 ValidFAA registration status code V: Valid registration. All codes
N3632E Cessna
172N
Fixed-wing, single engine High Exposure INC
Wilmington, Delaware
Standard 2017-03-15 ValidFAA registration status code V: Valid registration. All codes
N7620F Piper
PA-28-181
Fixed-wing, single engine Red 5 LLC
Kalispell, Montana
Standard 2017-03-15 ValidFAA registration status code V: Valid registration. All codes
N3GP Pereira
OSPREY 2
Fixed-wing, single engine Aerospace Museum of California
Mcclellan, California
Experimental 2017-03-14 ValidFAA registration status code V: Valid registration. All codes
N53361 Cessna
172P
Fixed-wing, single engine Adb Aircraft LLC
Viera, Florida
Standard 2017-03-14 ValidFAA registration status code V: Valid registration. All codes
N64043 Cessna
172M
Fixed-wing, single engine Aira Aviation LLC
Grand Ledge, Michigan
Standard 2017-03-14 ValidFAA registration status code V: Valid registration. All codes
N84686 Cessna
172K
Fixed-wing, single engine Withheld at owner's request
Standard 2017-03-14 ValidFAA registration status code V: Valid registration. All codes
N112KF Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Washington
Multiple 2017-03-09 ValidFAA registration status code V: Valid registration. All codes
N3602K Piper
PA-28-140
Fixed-wing, single engine Houlton International Flying Club
Houlton, Maine
Standard 2017-03-09 ValidFAA registration status code V: Valid registration. All codes
N84753 Cessna
172K
Fixed-wing, single engine Mckinley Brian J
Clinton, Missouri
Standard 2017-03-08 ValidFAA registration status code V: Valid registration. All codes
N98378 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2017-03-08 ValidFAA registration status code V: Valid registration. All codes
N738DY Cessna
172N
Fixed-wing, single engine Rnb Aviation LLC
Montgomery, Texas
Standard 2017-03-07 ValidFAA registration status code V: Valid registration. All codes
N8424 Ebel
PITTS SPEC. S1-C
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-03-07 ValidFAA registration status code V: Valid registration. All codes
N3238E Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-03-06 ValidFAA registration status code V: Valid registration. All codes
N738ZQ Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2017-03-06 ValidFAA registration status code V: Valid registration. All codes
N80729 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2017-03-06 ValidFAA registration status code V: Valid registration. All codes
N9815G Cessna
172L
Fixed-wing, single engine Kenmore Air Harbor LLC
Kenmore, Washington
Standard 2017-03-06 ValidFAA registration status code V: Valid registration. All codes
N8627V Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Louisiana
Standard 2017-03-03 ValidFAA registration status code V: Valid registration. All codes
N13618 Cessna
172M
Fixed-wing, single engine Individual owner
Nebraska
Standard 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N172FM Cessna
172K
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N25LE Wilson Charles R
LONG-EZ
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N65065 Cessna
172P
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N75603 Cessna
172N
Fixed-wing, single engine Individual owner
Washington
Standard 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N78RT Tredo Randy
MUSTANG II
Fixed-wing, single engine Individual owner
Kansas
Experimental 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N139AA Pzl 110
KOLIBER 160A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2017-03-01 ValidFAA registration status code V: Valid registration. All codes
N491ET Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2017-02-28 ValidFAA registration status code V: Valid registration. All codes
N54990 Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2017-02-28 ValidFAA registration status code V: Valid registration. All codes
N7045B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-02-28 ValidFAA registration status code V: Valid registration. All codes
N7215F Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2017-02-28 ValidFAA registration status code V: Valid registration. All codes
N95253 Piper
PA-28-140
Fixed-wing, single engine Mmou LLC
Fort Worth, Texas
Standard 2017-02-28 ValidFAA registration status code V: Valid registration. All codes
N9936Q Cessna
172M
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-02-28 ValidFAA registration status code V: Valid registration. All codes
N1709J Piper
PA-28-140
Fixed-wing, single engine Wingman Unlimited LLC
Carrollton, Texas
Standard 2017-02-27 ValidFAA registration status code V: Valid registration. All codes
N20665 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2017-02-27 ValidFAA registration status code V: Valid registration. All codes
N2836G Piper
PA-28-161
Fixed-wing, single engine Red Rock Fly LLC
Lewes, Delaware
Standard 2017-02-27 ValidFAA registration status code V: Valid registration. All codes
N4085W Kendrick Sherrill Vernon
RV-6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2017-02-27 ValidFAA registration status code V: Valid registration. All codes
N413BX Clift A E
RV 4
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2017-02-27 ValidFAA registration status code V: Valid registration. All codes
N64035 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-02-27 ValidFAA registration status code V: Valid registration. All codes
N5962U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Vermont
Standard 2017-02-24 ValidFAA registration status code V: Valid registration. All codes
N733EW Cessna
172N
Fixed-wing, single engine S S T & J LLC
Minden, Nebraska
Standard 2017-02-24 ValidFAA registration status code V: Valid registration. All codes
N12290 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N1703P Piper
PA-22
Fixed-wing, single engine Individual owner
Texas
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N172E Cessna
172M
Fixed-wing, single engine Plymouth Flying Club INC
Plymouth, New Hampshire
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N172MS Cessna
172M
Fixed-wing, single engine Airgo INC
Centralia, Illinois
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N3357T Cessna
177
Fixed-wing, single engine High West Aero LLC
Broadus, Montana
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N4432J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N739BE Cessna
172N
Fixed-wing, single engine Ftg Leasing LLC
Watkins, Colorado
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N79479 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2017-02-23 ValidFAA registration status code V: Valid registration. All codes
N26693 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-02-22 ValidFAA registration status code V: Valid registration. All codes
N8697E Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2017-02-22 ValidFAA registration status code V: Valid registration. All codes
N5426Q Cessna
172M
Fixed-wing, single engine Len Emery Photography LLC
Springfield, Vermont
Standard 2017-02-21 ValidFAA registration status code V: Valid registration. All codes
N5005R Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-02-17 ValidFAA registration status code V: Valid registration. All codes
N5648W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2017-02-17 ValidFAA registration status code V: Valid registration. All codes
N9717H Cessna
172M
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2017-02-17 ValidFAA registration status code V: Valid registration. All codes
N2973Z Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N4104P Piper
PA-23-160
Fixed-wing, multi-engine Spooter Air II LLC
Willis, Texas
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N427DP Piper
PA-28-151
Fixed-wing, single engine Charlie Alpha INC
Calabasas, California
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N4440P Piper
PA-23-160
Fixed-wing, multi-engine Apac LLC
Berlin, New Jersey
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N663RT Cessna
172M
Fixed-wing, single engine Raiders Tigers Flying Club INC DBA
Houston, Texas
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N6879C Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N8301P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N8323B Robinson Helicopter
R22 BETA
Helicopter Midcoast Helicopter Services INC
La Ward, Texas
Standard 2017-02-16 ValidFAA registration status code V: Valid registration. All codes
N196L Volmer Amphibian
VJ22-CL
Fixed-wing, single engine Individual owner
Mississippi
Experimental 2017-02-15 ValidFAA registration status code V: Valid registration. All codes
N282RD Davenport Robert W
LONG EZ
Fixed-wing, single engine Individual owner
Oregon
Experimental 2017-02-15 ValidFAA registration status code V: Valid registration. All codes
N5249R Cessna
172M
Fixed-wing, single engine High Exposure INC
Wilmington, Delaware
Standard 2017-02-15 ValidFAA registration status code V: Valid registration. All codes
N7889G Cessna
172L
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2017-02-15 ValidFAA registration status code V: Valid registration. All codes
N9886N Shilt Jerry C
RV4
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-02-15 ValidFAA registration status code V: Valid registration. All codes
N52280 Cessna
172P
Fixed-wing, single engine Southern Air LLC
Marissa, Illinois
Standard 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N739EU Cessna
172N
Fixed-wing, single engine Star Fleet Aviation LLC
New Albany, Ohio
Standard 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N7559P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Minnesota
Multiple 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N8148P Piper
PA-28-161
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N8664D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N12687 Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2017-02-13 ValidFAA registration status code V: Valid registration. All codes
N78219 Cessna
172K
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-02-13 ValidFAA registration status code V: Valid registration. All codes
N81JF Frost Howard R Jr
WAGABOND TRAVELER
Fixed-wing, single engine Individual owner
Maine
Experimental 2017-02-13 ValidFAA registration status code V: Valid registration. All codes
N9334C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-02-13 ValidFAA registration status code V: Valid registration. All codes
N13127 Cessna
172M
Fixed-wing, single engine Fisher Global LLC
Conway, Arkansas
Standard 2017-02-10 ValidFAA registration status code V: Valid registration. All codes
N53763 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Restricted 2017-02-10 ValidFAA registration status code V: Valid registration. All codes
N5830Y Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2017-02-10 ValidFAA registration status code V: Valid registration. All codes
N6HM Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Kentucky
Restricted 2017-02-10 ValidFAA registration status code V: Valid registration. All codes
N9665U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Oregon
Standard 2017-02-10 ValidFAA registration status code V: Valid registration. All codes
N9751U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Nebraska
Standard 2017-02-10 ValidFAA registration status code V: Valid registration. All codes
N1143M Cessna
172L
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2017-02-09 ValidFAA registration status code V: Valid registration. All codes
N177V Cessna
177
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-02-09 ValidFAA registration status code V: Valid registration. All codes
N32526 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2017-02-09 ValidFAA registration status code V: Valid registration. All codes
N73181 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2017-02-09 ValidFAA registration status code V: Valid registration. All codes
N1516V Cessna
172M
Fixed-wing, single engine Aircraft Management Services INC
Milton, Florida
Standard 2017-02-08 ValidFAA registration status code V: Valid registration. All codes
N4322J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-02-08 ValidFAA registration status code V: Valid registration. All codes
N56GB Brunger
OSPREY II
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2017-02-08 ValidFAA registration status code V: Valid registration. All codes
N6045D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2017-02-08 ValidFAA registration status code V: Valid registration. All codes
N734TE Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2017-02-08 ValidFAA registration status code V: Valid registration. All codes
N80421 Cessna
172M
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2017-02-08 ValidFAA registration status code V: Valid registration. All codes
N84183 Cessna
172K
Fixed-wing, single engine Chickadee Aviation LLC
Burr Ridge, Illinois
Standard 2017-02-08 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.