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
N2891P Piper
PA-18A
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N32189 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N4859A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N497FL Piper
PA-28-140
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N5567M Aero Commander
100
Fixed-wing, single engine Individual owner
Texas
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N574BF Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N7301F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N733HF Cessna
172N
Fixed-wing, single engine Vr Aerospace LLC
Seattle, Washington
Standard 2022-11-05 ValidFAA registration status code V: Valid registration. All codes
N164WM Cox Carson H
RV-6A
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2022-11-04 ValidFAA registration status code V: Valid registration. All codes
N1967S Cessna
172L
Fixed-wing, single engine Fullerton Airport Pilot Association
Fullerton, California
Standard 2022-11-04 ValidFAA registration status code V: Valid registration. All codes
N333EM Miller Marquis
RV-6A
Fixed-wing, single engine Individual owner
Colorado
Experimental 2022-11-04 ValidFAA registration status code V: Valid registration. All codes
N4593A Piper
PA-18-150
Fixed-wing, single engine Bvm LLC
Stonington, Connecticut
Multiple 2022-11-04 ValidFAA registration status code V: Valid registration. All codes
N7011G Cessna
172K
Fixed-wing, single engine Chase Development Aviation LLC
Oakland Park, Florida
Standard 2022-11-04 ValidFAA registration status code V: Valid registration. All codes
N140FP Cessna
172P
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N1732J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N4434Q Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N5599W Piper
PA-28-160
Fixed-wing, single engine Phoenix Aviation LLC
Claremore, Oklahoma
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N61923 Cessna
172M
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N755GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Individual owner
California
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N811JD Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N8313E Robinson Helicopter
R22 MARINER
Helicopter Individual owner
Connecticut
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N8510D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2022-11-03 ValidFAA registration status code V: Valid registration. All codes
N13686 Cessna
172M
Fixed-wing, single engine T Craft Aero Club INC
Nampa, Idaho
Standard 2022-11-02 ValidFAA registration status code V: Valid registration. All codes
N4DE Eide
TURNER T-40A
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-11-02 ValidFAA registration status code V: Valid registration. All codes
N921KC Robinson Helicopter
R22 BETA
Helicopter Rocket City Helicopters LLC
Brownsboro, Alabama
Standard 2022-11-02 ValidFAA registration status code V: Valid registration. All codes
N26805 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-11-01 ValidFAA registration status code V: Valid registration. All codes
N5109G Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-11-01 ValidFAA registration status code V: Valid registration. All codes
N6401R Piper
PA-28-140
Fixed-wing, single engine Northern Prairie Sky LLC
Erskine, Minnesota
Standard 2022-11-01 ValidFAA registration status code V: Valid registration. All codes
N7185G Cessna
172K
Fixed-wing, single engine Individual owner
Maryland
Standard 2022-11-01 ValidFAA registration status code V: Valid registration. All codes
N7621G Cessna
172L
Fixed-wing, single engine Crewdawg Aviation LLC
Concord, North Carolina
Standard 2022-11-01 ValidFAA registration status code V: Valid registration. All codes
N79468 Cessna
172K
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-11-01 ValidFAA registration status code V: Valid registration. All codes
N7808Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-10-31 ValidFAA registration status code V: Valid registration. All codes
N9158H Cessna
172M
Fixed-wing, single engine Parrish Aviation Flight Academy LLC
Southlake, Texas
Standard 2022-10-31 ValidFAA registration status code V: Valid registration. All codes
N383DF Cessna
172N
Fixed-wing, single engine Dream Flight LLC
Westminster, Maryland
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N44290 Piper
PA-28-151
Fixed-wing, single engine Fly With US LLC
Cantonment, Florida
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N64532 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdins LLC
Denton, Texas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N65221 Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N67DL Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N7222Q Cessna
172L
Fixed-wing, single engine Mohawk Flying Club INC
Ada, Michigan
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N73381 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N75174 Piper
PA-28-140
Fixed-wing, single engine 10 Skies LLC
Rockport, Texas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N79805 Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N8138D Piper
PA-22-160
Fixed-wing, single engine Air Group INC
Marietta, Georgia
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N84352 Cessna
172K
Fixed-wing, single engine Boundless Aviation LLC
Kailua Kona, Hawaii
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N8932V Cessna
172M
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N954JH Cessna
172M
Fixed-wing, single engine Wings Over Texas LLC
Denton, Texas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N96192 Cessna
172P
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N9670U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2022-10-29 ValidFAA registration status code V: Valid registration. All codes
N13078 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N172Y Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N20MZ Zemsta Mike
R V 6A
Fixed-wing, single engine Individual owner
Alabama
Experimental 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N277SS Scott Stone
VANS RV7A
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N48TD American Champion Aircraft
7GCBC
Fixed-wing, single engine Foster Aviation LLC
Missoula, Montana
Standard 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N5361W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N811AJ Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-10-28 ValidFAA registration status code V: Valid registration. All codes
N202Q Magaw David
TAILWIND W-8+
Fixed-wing, single engine Individual owner
Alabama
Experimental 2022-10-27 ValidFAA registration status code V: Valid registration. All codes
N5279D Cessna
172N
Fixed-wing, single engine Day Aviation INC
Wilmington, Delaware
Standard 2022-10-27 ValidFAA registration status code V: Valid registration. All codes
N5449H Cessna
172M
Fixed-wing, single engine Moorhead Aviation Services LLC
Moorhead, Minnesota
Standard 2022-10-27 ValidFAA registration status code V: Valid registration. All codes
N56777 Piper
PA-28-151
Fixed-wing, single engine Jac Aero LLC
Springfield, Oregon
Standard 2022-10-27 ValidFAA registration status code V: Valid registration. All codes
N9684W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-10-27 ValidFAA registration status code V: Valid registration. All codes
N1588V Cessna
172M
Fixed-wing, single engine C-140 Company LLC
Milton, Florida
Standard 2022-10-26 ValidFAA registration status code V: Valid registration. All codes
N4374N Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2022-10-26 ValidFAA registration status code V: Valid registration. All codes
N5284Q Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-26 ValidFAA registration status code V: Valid registration. All codes
N68572 Bellanca
7GCBC
Fixed-wing, single engine Precision Guided Solutions LLC
Sioux Falls, South Dakota
Standard 2022-10-26 ValidFAA registration status code V: Valid registration. All codes
N7596R Piper
PA-28-140
Fixed-wing, single engine Chocolaterie LTD
Des Moines, Iowa
Standard 2022-10-26 ValidFAA registration status code V: Valid registration. All codes
N7646G Cessna
172L
Fixed-wing, single engine Sky Aviation LLC
Encinitas, California
Standard 2022-10-26 ValidFAA registration status code V: Valid registration. All codes
N2846X Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N3012E Cessna
172N
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N4345Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N515RD Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N696AG Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N7071G Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N712TT Cessna
172P
Fixed-wing, single engine Ab Cessna LLC
Wilmington, North Carolina
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N7772G Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N78445 Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N79249 Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N88119 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N9256G Folker David A
MUSTANG II
Fixed-wing, single engine Individual owner
Missouri
Experimental 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N927TC Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N9899G Cessna
172L
Fixed-wing, single engine Wings Over Texas LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N9994V Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-25 ValidFAA registration status code V: Valid registration. All codes
N12104 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N12180 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N12240 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N12701 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N12886 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N129FR Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N13056 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N13941 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N1494V Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N172GM Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N1908F Cessna
172M
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N20102 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N221MF Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N4202Q Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N4203Q Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N4228Q Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N425DB Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N5082R Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 ValidFAA registration status code V: Valid registration. All codes
N53603 Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2022-10-24 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.