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
N739DB Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2020-05-05 ValidFAA registration status code V: Valid registration. All codes
N80912 Cessna
172M
Fixed-wing, single engine Bay Area Concrete LLC
Hayward, California
Standard 2020-05-05 ValidFAA registration status code V: Valid registration. All codes
N36438 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Washington
Standard 2020-05-04 ValidFAA registration status code V: Valid registration. All codes
N65770 Cessna
172P
Fixed-wing, single engine Individual owner
South Carolina
Standard 2020-05-04 ValidFAA registration status code V: Valid registration. All codes
N6763J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2020-05-04 ValidFAA registration status code V: Valid registration. All codes
N8351W Piper
PA-28-161
Fixed-wing, single engine Quality Aero LLC
East Aurora, New York
Standard 2020-05-04 ValidFAA registration status code V: Valid registration. All codes
N9780W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-05-04 ValidFAA registration status code V: Valid registration. All codes
N2358Q Beech
23
Fixed-wing, single engine Individual owner
Washington
Standard 2020-05-01 ValidFAA registration status code V: Valid registration. All codes
N8358L Cessna
172I
Fixed-wing, single engine Oc Flight Lessons LLC
Costa Mesa, California
Standard 2020-05-01 ValidFAA registration status code V: Valid registration. All codes
N9185H Cessna
172M
Fixed-wing, single engine Flyit LLC
Washougal, Washington
Standard 2020-05-01 ValidFAA registration status code V: Valid registration. All codes
N2356Z Beech
23
Fixed-wing, single engine Olson David C
Emmetsburg, Iowa
Standard 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N38580 Piper
PA-28-140
Fixed-wing, single engine Avier LLC
Beverly, Massachusetts
Standard 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N4063Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Colorado
Multiple 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N53878 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N5418W Piper
PA-28
Fixed-wing, single engine Co-owned owner
California
Standard 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N65892 Cessna
172P
Fixed-wing, single engine Amelia Airways LLC
Boynton Beach, Florida
Standard 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N8659C Piper
PA-18A-135
Fixed-wing, single engine Individual owner
Kansas
Restricted 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N868RT Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2020-04-30 ValidFAA registration status code V: Valid registration. All codes
N1856J Piper
PA-28-140
Fixed-wing, single engine Wood Dragon LLC
Portland, Maine
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N43219 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N5385J Cessna
172N
Fixed-wing, single engine Aerowood Aviation LLC
Monroe, North Carolina
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N739FD Cessna
172N
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N7557D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N8318E Cessna
172N
Fixed-wing, single engine Just Planes INC
Hobbs, New Mexico
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N84214 Cessna
172K
Fixed-wing, single engine Planefully Obvious LLC
Oshkosh, Wisconsin
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N99265 Cessna
172P
Fixed-wing, single engine St Pete Aviation Services LLC
Saint Petersburg, Florida
Standard 2020-04-29 ValidFAA registration status code V: Valid registration. All codes
N2172P Piper
PA-23
Fixed-wing, multi-engine Riggin Flight Service INC
Madison, South Dakota
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N2205A Piper
PA-18-135
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N244FR Cessna
172N
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N3280P Piper
PA-23
Fixed-wing, multi-engine Riggin Flight Service INC
Madison, South Dakota
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N4124J Piper
PA-28-140
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N56831 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N6630W Piper
PA-28-140
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N7XY Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2020-04-28 ValidFAA registration status code V: Valid registration. All codes
N32288 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Indiana
Standard 2020-04-27 ValidFAA registration status code V: Valid registration. All codes
N3277Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2020-04-27 ValidFAA registration status code V: Valid registration. All codes
N98873 Cessna
172P
Fixed-wing, single engine Laguna Verde Leasing INC
Wilmington, Delaware
Standard 2020-04-27 ValidFAA registration status code V: Valid registration. All codes
N126K Cessna
172K
Fixed-wing, single engine Individual owner
New York
Standard 2020-04-23 ValidFAA registration status code V: Valid registration. All codes
N172CP Cessna
172N
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2020-04-23 ValidFAA registration status code V: Valid registration. All codes
N4119Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2020-04-23 ValidFAA registration status code V: Valid registration. All codes
N2302J Robinson Helicopter
R22 BETA
Helicopter Go Fly Maui LLC
Paia, Hawaii
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N2306Y Cessna
177
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N3268P Piper
PA-23-160
Fixed-wing, multi-engine On Glideslope LLC
Middletown, Delaware
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N47656 Piper
PA-28-161
Fixed-wing, single engine Adventure North Flying Service LLC
Aitkin, Minnesota
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N6417J Cessna
172N
Fixed-wing, single engine Individual owner
Utah
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N7188Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N80254 Cessna
172M
Fixed-wing, single engine On Glideslope LLC
Middletown, Delaware
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N9782V Cessna
172M
Fixed-wing, single engine On Glideslope LLC
Middletown, Delaware
Standard 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N98RH Hart Raymond J
COZY
Fixed-wing, single engine Individual owner
Colorado
Experimental 2020-04-22 ValidFAA registration status code V: Valid registration. All codes
N19CD Anderson Christopher M
RV-6
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2020-04-21 ValidFAA registration status code V: Valid registration. All codes
N40925 Piper
PA-28-151
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2020-04-21 ValidFAA registration status code V: Valid registration. All codes
N6034L American
AA-5
Fixed-wing, single engine Sunflower Sport Aviation LLC
Fort Leavenworth, Kansas
Standard 2020-04-21 ValidFAA registration status code V: Valid registration. All codes
N84140 Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-04-21 ValidFAA registration status code V: Valid registration. All codes
N85WA Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-04-21 ValidFAA registration status code V: Valid registration. All codes
N20697 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N223TR Cessna
172K
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N4999F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N527VM Benton Thomas M
RV-3B
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N5675W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Florida
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N595T Hall Thomas E
RV-8
Fixed-wing, single engine Co-owned owner
Tennessee
Experimental 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N6157D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N7241J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N83412 Piper
PA-18-150
Fixed-wing, single engine Mifflin Enterprises LLC
Mansfield, Ohio
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N8725E Piper
PA-28-151
Fixed-wing, single engine Rrr Transportation LLC
Oneonta, Alabama
Standard 2020-04-20 ValidFAA registration status code V: Valid registration. All codes
N2262M Piper
PA-28-161
Fixed-wing, single engine AG Air Squadron Two LLC
Saint Joseph, Illinois
Standard 2020-04-17 ValidFAA registration status code V: Valid registration. All codes
N30225 Cessna
177
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-04-17 ValidFAA registration status code V: Valid registration. All codes
N74CN Vance-Hamm
GLASAIR
Fixed-wing, single engine Individual owner
California
Experimental 2020-04-17 ValidFAA registration status code V: Valid registration. All codes
N9999A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2020-04-17 ValidFAA registration status code V: Valid registration. All codes
N13821 Cessna
172M
Fixed-wing, single engine Lexington Flying Club
Lexington, Kentucky
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N1385R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
South Carolina
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N194KC Robinson Helicopter
R22 BETA
Helicopter Hallmark University INC
San Antonio, Texas
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N2446V Piper-Insua
L-21
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N29LG Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N41804 Bellanca
7GCAA
Fixed-wing, single engine Beulen Brian V
Mesa, Arizona
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N46668 Cessna
172K
Fixed-wing, single engine Leaseair LLC
Wilmington, Delaware
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N558AZ Frappier J M R/Frappier E W
RV-9
Fixed-wing, single engine Individual owner
Virginia
Experimental 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N733NB Cessna
172N
Fixed-wing, single engine Texins Flying Club
Mckinney, Texas
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N76016 Cessna
172N
Fixed-wing, single engine Cape Fear Aviation Maintenance LLC
Fayetteville, North Carolina
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N8391S Piper
PA-28-161
Fixed-wing, single engine Vip Medical Services LLC
Nixa, Missouri
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N15121 Piper
PA-28-140
Fixed-wing, single engine Airborne Aviation LLC
Anchorage, Alaska
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N31988 Piper
PA-28-161
Fixed-wing, single engine Little Dog Aviation LLC
Branchburg, New Jersey
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N334AZ Teal-Washac Industries Inc.
TSC-1A2
Fixed-wing, single engine Individual owner
South Dakota
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N43353 Piper
PA-28-151
Fixed-wing, single engine Venture North Aviation LLC
Cloquet, Minnesota
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N46615 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N66018 Cessna
172P
Fixed-wing, single engine Executive Aviation LLC
Peoria, Arizona
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N78331 Cessna
172K
Fixed-wing, single engine Individual owner
Colorado
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N95305 Piper
PA-28-140
Fixed-wing, single engine Eagle Aviation INC
Tucson, Arizona
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N9816U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Cheetah Air LLC
Edinburg, North Dakota
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N9880Q Cessna
172M
Fixed-wing, single engine Aircraft Resource Center INC
Lakeville, Minnesota
Standard 2020-04-15 ValidFAA registration status code V: Valid registration. All codes
N140CK Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N29389 Cessna
177
Fixed-wing, single engine Otc Aviation LLC
Deer Creek, Minnesota
Standard 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N46269 Cessna
172I
Fixed-wing, single engine Fox Victor Aviation LLC
Newnan, Georgia
Standard 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N46624 Cessna
172K
Fixed-wing, single engine Kda Aviation LLC
East Granby, Connecticut
Standard 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N6867B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N737TY Cessna
172N
Fixed-wing, single engine Texins Flying Club
Mckinney, Texas
Standard 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N824PC Guillot David J
HATZ CB1
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2020-04-14 ValidFAA registration status code V: Valid registration. All codes
N4538A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2020-04-13 ValidFAA registration status code V: Valid registration. All codes
N738KK Cessna
172N
Fixed-wing, single engine Individual owner
South Carolina
Standard 2020-04-13 ValidFAA registration status code V: Valid registration. All codes
N9005H Cessna
172M
Fixed-wing, single engine Buffalo Aviation LLC
Royal, Nebraska
Standard 2020-04-13 ValidFAA registration status code V: Valid registration. All codes
N301AV Piper
PA-28-151
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-04-10 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.