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
N35PH Henry Patrick
FOKKER DR.1
Fixed-wing, single engine Tsi Holdco INC
Virginia Beach, Virginia
Experimental 2024-05-16 ValidFAA registration status code V: Valid registration. All codes
N41383 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-05-16 ValidFAA registration status code V: Valid registration. All codes
N64SA Allen Stan
RV-4
Fixed-wing, single engine Individual owner
Idaho
Experimental 2024-05-16 ValidFAA registration status code V: Valid registration. All codes
N6610W Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-05-16 ValidFAA registration status code V: Valid registration. All codes
N6661W Piper
PA-28-140
Fixed-wing, single engine Going To Rome LLC
Valley Center, Kansas
Standard 2024-05-16 ValidFAA registration status code V: Valid registration. All codes
N9161S Beech
B19
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-05-16 ValidFAA registration status code V: Valid registration. All codes
N172DB Cessna
172N
Fixed-wing, single engine K&T Aviation LLC
Milton, Pennsylvania
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N4318R Cessna
172M
Fixed-wing, single engine Individual owner
Delaware
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N4612Y Piper
PA-18-150
Fixed-wing, single engine Grasshopper Aviation LLC
Tulsa, Oklahoma
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N6880W Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N739GX Cessna
172N
Fixed-wing, single engine Music City Air LLC
Rogersville, Alabama
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N7436G Cessna
172K
Fixed-wing, single engine Chickadee Aviation LLC
Rangeley, Maine
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N8356E Cessna
172N
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N899JD Davenport Jefferey Allen
VANS RV-4
Fixed-wing, single engine Individual owner
Alabama
Experimental 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N3732P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-05-14 ValidFAA registration status code V: Valid registration. All codes
N659HC Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Restricted 2024-05-14 ValidFAA registration status code V: Valid registration. All codes
N907AZ Cessna
172P
Fixed-wing, single engine N907Az LLC
Miami, Florida
Standard 2024-05-14 ValidFAA registration status code V: Valid registration. All codes
N12876 Cessna
172M
Fixed-wing, single engine Aerolanding LLC
Enterprise, Alabama
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N2425M Piper
PA-28-161
Fixed-wing, single engine Tap Solutions INC
San Diego, California
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N4230Q Cessna
172L
Fixed-wing, single engine Air Castles LLC
Ozark, Alabama
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N6964H Cessna
172M
Fixed-wing, single engine Mor Aviation N6964H LLC
Gaithersburg, Maryland
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N2960D Piper
PA-28-161
Fixed-wing, single engine Red Baron Rentals LLC
Jacksonville, Florida
Standard 2024-05-12 ValidFAA registration status code V: Valid registration. All codes
N5815L American
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2024-05-12 ValidFAA registration status code V: Valid registration. All codes
N6919W Piper
PA-28-140
Fixed-wing, single engine N6919W LLC
Key West, Florida
Standard 2024-05-12 ValidFAA registration status code V: Valid registration. All codes
N738ME Cessna
172N
Fixed-wing, single engine N738Me LLC
Miami, Florida
Standard 2024-05-12 ValidFAA registration status code V: Valid registration. All codes
N1887T Piper
PA-28-140
Fixed-wing, single engine Culver Investments LLC
Gordon, Texas
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N35KC Couillard Kenneth A
ZENAIR CH-300
Fixed-wing, single engine Individual owner
Utah
Experimental 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N41361 Piper
PA-28-151
Fixed-wing, single engine Excell Air Filters LLC
Ashland, Ohio
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N4351Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N454GL Loucks Gary D
TAIL WIND W-10
Fixed-wing, single engine Co-owned owner
New York
Experimental 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N6606D Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N734DL Kaasa Duane O
RV6A
Fixed-wing, single engine Co-owned owner
Kansas
Experimental 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N7631F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N8385L Cessna
172I
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N901TQ Piper
PA-28-140
Fixed-wing, single engine Adirondack Aviation LLC
Saranac Lake, New York
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N9643V Cessna
172M
Fixed-wing, single engine Brazos Valley Flight Services LLC
College Station, Texas
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N2801Z Piper
PA-22-160
Fixed-wing, single engine Valiair Limited Company Trustee
Casper, Wyoming
Standard 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N46315 Cessna
172K
Fixed-wing, single engine Ntss LLC
Henderson, Nevada
Standard 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N5672U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N700JL Hubbell Jon
RV-6
Fixed-wing, single engine Co-owned owner
Indiana
Experimental 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N8501D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N5227D Cessna
172N
Fixed-wing, single engine Tahoe Arrows LLC
South Lake Tahoe, California
Standard 2024-05-09 ValidFAA registration status code V: Valid registration. All codes
N55149 Piper
PA-28-140
Fixed-wing, single engine County 17 Aviators LLC
Gillette, Wyoming
Standard 2024-05-09 ValidFAA registration status code V: Valid registration. All codes
N56396 Piper
PA-28-140
Fixed-wing, single engine Sky North Aviation & Flight Training LLC
Arbuckle, California
Standard 2024-05-09 ValidFAA registration status code V: Valid registration. All codes
N5RJ Jamsek Richard A
RUTAN LONG EZ
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2024-05-09 ValidFAA registration status code V: Valid registration. All codes
N7516F Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-05-09 ValidFAA registration status code V: Valid registration. All codes
N9955Q Piper
PA-18-135
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2024-05-09 ValidFAA registration status code V: Valid registration. All codes
N13623 Cessna
172M
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N172BA Cessna
172K
Fixed-wing, single engine Carrolls Auto and Aircraft Sales LLC
Muncie, Indiana
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N20559 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N443TT Tyler H Thomas
RV 4
Fixed-wing, single engine Individual owner
Indiana
Experimental 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N4481X Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N46401 Cessna
172K
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N498TH Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Interstellar Vc LLC
New York, New York
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N5206B Mooney Aircraft Corp.
M20
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N523FL Piper
PA-28-140
Fixed-wing, single engine Oden Matthew e
Greenwood, South Carolina
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N5247T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Utah
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N566JH Coltran Horace E
RV-6
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N7699G Cessna
172L
Fixed-wing, single engine Individual owner
New York
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N7728G Cessna
172L
Fixed-wing, single engine Takeflight LLC
Spanish Fork, Utah
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N78623 Cessna
172K
Fixed-wing, single engine Laurel Highlands Aeronautical Academy
Latrobe, Pennsylvania
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N8153N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N8616V Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N8946V Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N9730V Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N2343H Piper
PA-18-150
Fixed-wing, single engine Aerobinninger LLC
Mccall, Idaho
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N4206J Piper
PA-28-140
Fixed-wing, single engine Rawareollc
Warsaw, Missouri
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N5981D Piper
PA-18A 150
Fixed-wing, single engine Precision AG LLC
Kenmare, North Dakota
Restricted 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N60798 Cessna
150J
Fixed-wing, single engine Hjl Farm INC
Dagmar, Montana
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N6513C Interstate
S-1B1
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N724DP Pratt Donald W
VANS RV6
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N733HN Cessna
172N
Fixed-wing, single engine Ariaprima LLC
Port Orange, Florida
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N4207T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New York
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N5136W Piper
PA-28
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N6479R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N6999 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N739NL Cessna
172N
Fixed-wing, single engine Tucker Construction LLC
Red Bank, Tennessee
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N82285 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N8264V Piper
PA-28-161
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N9580W Piper
PA-28-140
Fixed-wing, single engine Destination Flyer LLC
Memphis, Tennessee
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N3153T Cessna
177
Fixed-wing, single engine
Standard 2024-05-04 ValidFAA registration status code V: Valid registration. All codes
N4719A Piper
PA-18A
Fixed-wing, single engine Avquest Aviation Services LLC
Montgomery, New York
Restricted 2024-05-04 ValidFAA registration status code V: Valid registration. All codes
N9089H Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-05-04 ValidFAA registration status code V: Valid registration. All codes
N24602 Beech
B19
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N3926Q Cessna
172L
Fixed-wing, single engine Leaseair LLC
Wilmington, Delaware
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N52123 Cessna
172P
Fixed-wing, single engine Titop LTD
Wilmington, Delaware
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N737YQ Cessna
172N
Fixed-wing, single engine Tec Aviation INC
Pasco, Washington
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N769GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Long Island Aviators LLC
Seaford, New York
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N8365L Cessna
172I
Fixed-wing, single engine Harbour Aviation LLC
Weatherford, Texas
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N86DW Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Whidbey Flight Services LLC
Coupeville, Washington
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N9567W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N12113 Cessna
172M
Fixed-wing, single engine Arlins Aircraft Service INC
Belgrade, Montana
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N1423Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N4309P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Texas
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N6602H Cessna
172M
Fixed-wing, single engine Over the Mountain Aviation LLC
Calera, Alabama
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N7092G Cessna
172K
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N7923B Cessna
172K
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N81866 Piper
PA-28-161
Fixed-wing, single engine Wellness Flight LLC
Sarasota, Florida
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N8247N Piper
PA-28-140
Fixed-wing, single engine Horizon Edge LLC
Helena, Montana
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N23078 Cessna
172M
Fixed-wing, single engine Pureflight Aviation Training LLC
Newberg, Oregon
Standard 2024-05-01 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.