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
N8195D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N20934 Cessna
172M
Fixed-wing, single engine Fly Skyhawk LLP
Galena, Ohio
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N5034M Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N6524F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N6619D Cessna
172N
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N9658W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N119SG American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
New York
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N123YC Maxwell M / Anderson R
GLASAIR I
Fixed-wing, single engine Individual owner
California
Experimental 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N13377 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N3301P Piper
PA-23-160
Fixed-wing, multi-engine Dramstad Flying Service LLC
Helena, Montana
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N38WS Smith Weston L
SHA-GLASAIR
Fixed-wing, single engine Co-owned owner
Nevada
Experimental 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N46730 Cessna
172K
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N64441 Cessna
172M
Fixed-wing, single engine Dramstad Flying Service LLC
Helena, Montana
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N73524 Cessna
172M
Fixed-wing, single engine Dramstad Flying Service LLC
Helena, Montana
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N9728U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Grrumman LLC
Salem, Oregon
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N1014F Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-03-25 ValidFAA registration status code V: Valid registration. All codes
N12651 Cessna
172M
Fixed-wing, single engine Kelley Aircraft LLC
Weyers Cave, Virginia
Standard 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N18932 Beech
B19
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N214NY Barker Andrew H
RV-4
Fixed-wing, single engine Cabco Enterprises LLC
Springdale, Arkansas
Experimental 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N2361Z Beech
23
Fixed-wing, single engine Individual owner
Mississippi
Standard 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N43456 Piper
PA-28-151
Fixed-wing, single engine Parker Air LLC
Mobile, Alabama
Standard 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N4349L Piper
PA-28-161
Fixed-wing, single engine Parker Air LLC
Mobile, Alabama
Standard 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N5776U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-03-24 ValidFAA registration status code V: Valid registration. All codes
N46168 Cessna
172I
Fixed-wing, single engine Jack Brown Seaplane Base INC
Winter Haven, Florida
Standard 2022-03-23 ValidFAA registration status code V: Valid registration. All codes
N61713 Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2022-03-23 ValidFAA registration status code V: Valid registration. All codes
N333CP Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N4508A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Montana
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N61967 Cessna
172M
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N633BC Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N737JU Cessna
172N
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N7451K Piper
PA-20
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N9689Q Cessna
172M
Fixed-wing, single engine Optic Air LLC
Sioux Center, Iowa
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N9977W Piper
PA-28-140
Fixed-wing, single engine N9977W LLC
Easley, South Carolina
Standard 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N332RV Conner Michael A
RV-3
Fixed-wing, single engine Individual owner
California
Experimental 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N4138Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N5695W Piper
PA-28-160
Fixed-wing, single engine 95Whiskey LLC
Georgetown, Massachusetts
Standard 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N7KA Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N88LL Bellanca
7GCBC
Fixed-wing, single engine Larrabee Consulting Group LLC
West Carrollton, Ohio
Standard 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N412DM Haagard David M
LONG-EZ
Fixed-wing, single engine Individual owner
Kansas
Experimental 2022-03-19 ValidFAA registration status code V: Valid registration. All codes
N466DS Bellanca
7GCAA
Fixed-wing, single engine Individual owner
North Carolina
Restricted 2022-03-19 ValidFAA registration status code V: Valid registration. All codes
N6455S Piper/Shankster
PA 18-160
Fixed-wing, single engine Individual owner
Alaska
Experimental 2022-03-19 ValidFAA registration status code V: Valid registration. All codes
N9606S Champion
7GCAA
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-03-19 ValidFAA registration status code V: Valid registration. All codes
N3141E Cessna
172N
Fixed-wing, single engine Power City Aviation INC
Hazleton, Pennsylvania
Standard 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N3809M Piper
PA-12
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N5541U Piper
PA-28-140
Fixed-wing, single engine
Standard 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N828LU Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N946PT Todebush Peter C
GLASTAR
Fixed-wing, single engine Individual owner
California
Experimental 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N98120 Cessna
172P
Fixed-wing, single engine Blue River Aviation LLC
Palmer, Alaska
Standard 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N21116 Piper
PA-28-161
Fixed-wing, single engine Prestige Worldwide Aviation LLC
Downers Grove, Illinois
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N35543 Cessna
172I
Fixed-wing, single engine Parrish Aviation Flight Academy LLC
Southlake, Texas
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N41HD Damler
ACRO-SPORT
Fixed-wing, single engine Individual owner
Colorado
Experimental 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N6502 Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Maine
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N72999 Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N73800 Cessna
172N
Fixed-wing, single engine Soul Aviation LLC
Newport Beach, California
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N1692T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2022-03-15 ValidFAA registration status code V: Valid registration. All codes
N177SB Hildebrant Earl L
PITTS S-1
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2022-03-15 ValidFAA registration status code V: Valid registration. All codes
N5133G Cessna
172K
Fixed-wing, single engine Pioneer Aviation LLC
Crossett, Arkansas
Standard 2022-03-15 ValidFAA registration status code V: Valid registration. All codes
N7716G Cessna
172L
Fixed-wing, single engine First Eclipse LTD
Richmond, Virginia
Multiple 2022-03-15 ValidFAA registration status code V: Valid registration. All codes
N81MX Alvarez Alan Apodaca
DEFIANT
Fixed-wing, multi-engine Individual owner
California
Experimental 2022-03-15 ValidFAA registration status code V: Valid registration. All codes
N6953D Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-03-14 ValidFAA registration status code V: Valid registration. All codes
N5627U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-03-12 ValidFAA registration status code V: Valid registration. All codes
N6148H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Iowa
Standard 2022-03-12 ValidFAA registration status code V: Valid registration. All codes
N734RV Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-03-12 ValidFAA registration status code V: Valid registration. All codes
N7405J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-03-12 ValidFAA registration status code V: Valid registration. All codes
N9393D Piper
PA-18A 150
Fixed-wing, single engine Air Care Systems INC
Lamar, Colorado
Multiple 2022-03-12 ValidFAA registration status code V: Valid registration. All codes
N987JB Bigham Jack L
MARQUART M 5 CHARGER
Fixed-wing, single engine Cassill Aircraft Leasing INC
Cedar Rapids, Iowa
Experimental 2022-03-12 ValidFAA registration status code V: Valid registration. All codes
N4893J Cessna
172N
Fixed-wing, single engine Martineau Aircraft INC
Butte, Montana
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N6150D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N660TA Cessna
172L
Fixed-wing, single engine Co-owned owner
Utah
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N7150L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N734UH Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N802PW Cessna
172P
Fixed-wing, single engine Flying Mermaid LLC
Aiea, Hawaii
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N8913V Cessna
172M
Fixed-wing, single engine I'Ll Fly Away LLC
Florence, South Carolina
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N4487P Piper
PA-23-160
Fixed-wing, multi-engine Accelerated Aviation Instruction LLC
Owatonna, Minnesota
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N512MS Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N54182 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N64065 Cessna
172P
Fixed-wing, single engine Lg Holdings LLC
Gretna, Nebraska
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N6556H Cessna
172M
Fixed-wing, single engine Ryco LLC
Lusk, Wyoming
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N776RV Quirk K M/Caubet J
VANS ACFT RV6
Fixed-wing, single engine Individual owner
California
Experimental 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N79315 Cessna
172K
Fixed-wing, single engine Waco Aircraft Partners LLC
Mc Gregor, Texas
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N8204N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N931PK Golden Eagle Co/Krause J
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N6450K Cessna
172P
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-03-08 ValidFAA registration status code V: Valid registration. All codes
N960RS Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2022-03-08 ValidFAA registration status code V: Valid registration. All codes
N55124 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2022-03-07 ValidFAA registration status code V: Valid registration. All codes
N6685W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-03-07 ValidFAA registration status code V: Valid registration. All codes
N727R Lee
SIDEWINDER
Fixed-wing, single engine Individual owner
Ohio
Experimental 2022-03-07 ValidFAA registration status code V: Valid registration. All codes
N82391 Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2022-03-07 ValidFAA registration status code V: Valid registration. All codes
N2935X Cessna
177
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-03-05 ValidFAA registration status code V: Valid registration. All codes
N5239W Piper
PA-28
Fixed-wing, single engine G&M Aviation LLC
Woodward, Oklahoma
Standard 2022-03-05 ValidFAA registration status code V: Valid registration. All codes
N247L Snyder John B
SNYDER-STOLP SA100
Fixed-wing, single engine Individual owner
Michigan
Experimental 2022-03-04 ValidFAA registration status code V: Valid registration. All codes
N75232 Piper
PA-28-151
Fixed-wing, single engine Changewater Equipment Services LLC
Washington, New Jersey
Standard 2022-03-04 ValidFAA registration status code V: Valid registration. All codes
N1506V Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N6325L Harrington Wiley E
VANS RV-4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N747GC Culver Glenn A
GLASTAR
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N801AP Piper
PA-28-151
Fixed-wing, single engine Aviation 4 US INC
Brooklyn, New York
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N9218D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N9502B Cessna
172RG
Fixed-wing, single engine Co-owned owner
California
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N7500D Piper
PA-22-150
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2022-03-02 ValidFAA registration status code V: Valid registration. All codes
N9464D Piper
PA-18-150
Fixed-wing, single engine 907 Aviators LLC
Eagle River, Alaska
Standard 2022-03-02 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.