The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 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
N8318C Piper
PA-28-151
Fixed-wing, single engine Aviator Jet LLC
Dover, Delaware
Standard 2024-08-29 ValidFAA registration status code V: Valid registration. All codes
N87M Piper
PA-22-150
Fixed-wing, single engine Sellers Mark
Philadelphia, Pennsylvania
Standard 2024-08-29 ValidFAA registration status code V: Valid registration. All codes
N20251 Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N49SL Piper
PA-12
Fixed-wing, single engine Fun Airplanes LLC
Whitefish, Montana
Restricted 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N64453 Cessna
172M
Fixed-wing, single engine Cofa Operations LLC
Dothan, Alabama
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N656DM Cessna
172N
Fixed-wing, single engine Kingsky Flight Academy LLC
Lakeland, Florida
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7044B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Maine
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7252G Cessna
172K
Fixed-wing, single engine Leaders Flying Service LLC
Clear Lake, Minnesota
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N739QV Cessna
172N
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7659D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N772DM Dean
THORP T-18
Fixed-wing, single engine American Aerial Imaging LLC
Fort Wayne, Indiana
Experimental 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N80376 Cessna
172M
Fixed-wing, single engine Aerial Specialties INC
Decatur, Texas
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N8346V Champion
7GCAA
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N1630J Piper
PA-28-140
Fixed-wing, single engine Piston Aviation LLC
Saint Charles, Missouri
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N1662J Piper
PA-28-140
Fixed-wing, single engine Altaverde LLC
Port Orange, Florida
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N19838 Cessna
172M
Fixed-wing, single engine Co-owned owner
New Jersey
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N2622T Robinson Helicopter
R22 BETA
Helicopter Individual owner
Nebraska
Multiple 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N4876F Cessna
172N
Fixed-wing, single engine Costa Air Service LLC
Painted Post, New York
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N614VZ Cessna
172P
Fixed-wing, single engine Vision Aircraft LLC
Scottsdale, Arizona
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N91507 Cessna
172M
Fixed-wing, single engine Eagle Aviation LLC
Spearfish, South Dakota
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N99917 Cessna
172P
Fixed-wing, single engine Individual owner
Maine
Standard 2024-08-27 ValidFAA registration status code V: Valid registration. All codes
N24679 Beech
B19
Fixed-wing, single engine No Limits Aviation INC
Hayden, Idaho
Standard 2024-08-26 ValidFAA registration status code V: Valid registration. All codes
N7158G Cessna
172K
Fixed-wing, single engine Hawk Aviation INC
Rush City, Minnesota
Standard 2024-08-26 ValidFAA registration status code V: Valid registration. All codes
N7256F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2024-08-26 ValidFAA registration status code V: Valid registration. All codes
N91244 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-08-26 ValidFAA registration status code V: Valid registration. All codes
N1488V Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2024-08-25 ValidFAA registration status code V: Valid registration. All codes
N46204 Cessna
172I
Fixed-wing, single engine Ms Tango LLC
Phoenix, Arizona
Standard 2024-08-25 ValidFAA registration status code V: Valid registration. All codes
N523BC Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2024-08-25 ValidFAA registration status code V: Valid registration. All codes
N6248C Piper
PA-28-161
Fixed-wing, single engine Fort Leavenworth Flying Club
Fort Leavenworth, Kansas
Standard 2024-08-25 ValidFAA registration status code V: Valid registration. All codes
N1953P Piper
PA-18-150
Fixed-wing, single engine Cub 1953P LLC
Boise, Idaho
Standard 2024-08-24 ValidFAA registration status code V: Valid registration. All codes
N2236P Piper
PA-23
Fixed-wing, multi-engine Citation X Parts LLC
Liberty, North Carolina
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N2515Y Piper
PA-28-161
Fixed-wing, single engine Nationwide Aviation LLC
Weatherford, Texas
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N4856G Cessna
172N
Fixed-wing, single engine Natchez Flight Training LLC
Natchez, Mississippi
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N5677W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N568FL Piper
PA-28-140
Fixed-wing, single engine Air Ventures Flying School LLC
Smithfield, Rhode Island
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N706FL Piper
PA-28-140
Fixed-wing, single engine Time Flys Idaho LLC
Clarkston, Washington
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N737LZ Cessna
172N
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N7453G Cessna
172K
Fixed-wing, single engine Northwoods Flyer LLC
Jacksonville, Florida
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N7924 Faulkinbury
STITS PLAYMATE 11-A
Fixed-wing, single engine Staple K Aviation LLC
Queen Creek, Arizona
Experimental 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N9213Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N98168 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N9JS American
AA-5
Fixed-wing, single engine Auburn Flight Time LLC
Auburn, Alabama
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N1818J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N1NW Weis
STARDUSTER SA-100
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N44566 Piper
PA-28-151
Fixed-wing, single engine Skybound Aviation LLC
Kernersville, North Carolina
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N4509Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N4713C Piper
PA-28-140
Fixed-wing, single engine Tron Aviation LLC
Orlando, Florida
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N5844L American
AA-5
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N6323N Champion
7GCAA
Fixed-wing, single engine Individual owner
Kentucky
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N6789T Piper
PA-28-161
Fixed-wing, single engine Crosswind Aviation of Oklahoma LLC
Stillwater, Oklahoma
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N737HJ Cessna
172N
Fixed-wing, single engine Personal Aviation INC
Poway, California
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N96EZ Hemmel William P Jr
LONG-EZ
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N9885Q Cessna
172M
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N180PZ Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N2525Y Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N2914Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N46622 Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N567DH Heckart David J
GLASTAR
Fixed-wing, single engine Individual owner
Oregon
Experimental 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N6280H Holland Thomas C
RV6A
Fixed-wing, single engine Lewis Rv 6 Holdings LLC
Palm City, Florida
Experimental 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N6390W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N29344 Cessna
177
Fixed-wing, single engine P & P Aviation LLC
Trout Run, Pennsylvania
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N349JP Perry James D
GLASAIR FT
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N38291 Piper
PA-28-161
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N4192Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N43758 Mccormick Kevin
RV6
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N6905H Cessna
172M
Fixed-wing, single engine Tang Flyer LLC
Wausau, Wisconsin
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N733AN Cessna
172N
Fixed-wing, single engine Atlas Epigrin Aviation LLC
Austin, Texas
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N739ZC Cessna
172N
Fixed-wing, single engine Individual owner
Colorado
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N82346 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N12834 Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N160WM Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N41291 Piper
PA-28-151
Fixed-wing, single engine N41291 LLC
Fort Worth, Texas
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N41PV Piper
PA-28-161
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N574DG Garis P R/Garis J D
GLACIER CUB
Fixed-wing, single engine Co-owned owner
Idaho
Experimental 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N789DW Piper
PA-28-140
Fixed-wing, single engine Fergus Falls Aviation LLC
Fergus Falls, Minnesota
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N82109 Piper
PA-18-150
Fixed-wing, single engine Hurlburt Ward B
Dillingham, Alaska
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N9950D Piper
PA-22-150
Fixed-wing, single engine Sierra Charlie Aviation LLC
Sandpoint, Idaho
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N19ME Robinson Helicopter
R22
Helicopter Individual owner
Georgia
Standard 2024-08-18 ValidFAA registration status code V: Valid registration. All codes
N12447 Cessna
172M
Fixed-wing, single engine Pickle Aviation LLC
Yakima, Washington
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N124UC Cessna
172P
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N174HA Cessna
172N
Fixed-wing, single engine Klin Trin Collectibles LLC
Downers Grove, Illinois
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N21035 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N2835Q Cessna
172L
Fixed-wing, single engine San Fernando Aviation LLC
Van Nuys, California
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N74MH Piper
PA-28-151
Fixed-wing, single engine Richmond Wheeler LLC
Marshfield, Wisconsin
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N8083D Piper
PA-18-150
Fixed-wing, single engine
Multiple 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N16283 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N5503F Piper
PA-28-140
Fixed-wing, single engine N5503F Aircraft Holdings LLC
Orangeburg, South Carolina
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N6307W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Montana
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N6933D Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N734ED Cessna
172N
Fixed-wing, single engine Scapegoat Aviation LLC
Choteau, Montana
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N73PP Cessna
172M
Fixed-wing, single engine Arew Aviation LLC
San Tan Valley, Arizona
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N78066 Cessna
172K
Fixed-wing, single engine Orlandi Properties LLC
Blairstown, New Jersey
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N9651V Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N2157B Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N2334K Robinson Helicopter
R22 BETA
Helicopter Sixty Six Holdings LLC
King, North Carolina
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N319JP Cessna
172M
Fixed-wing, single engine Elon Aviation LLC
Burlington, North Carolina
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N3924K Ayton Ian F
RUTAN LONG-EZ
Fixed-wing, single engine Cloud Dancer Aviation LLC
Chino Hills, California
Experimental 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N4607R Piper
PA-28-140
Fixed-wing, single engine Bayside Aviators LLC
Union City, California
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N80790 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N8792N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.