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
N738ND Cessna
172N
Fixed-wing, single engine Food From the Forest LLC
Wilmington, Delaware
Standard 2016-07-11 ValidFAA registration status code V: Valid registration. All codes
N78651 Cessna
172K
Fixed-wing, single engine N78651 LLC
Williamsburg, Virginia
Standard 2016-07-11 ValidFAA registration status code V: Valid registration. All codes
N9188G Cessna
172N
Fixed-wing, single engine Aircraft Management Services INC
Milton, Florida
Standard 2016-07-11 ValidFAA registration status code V: Valid registration. All codes
N9877D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2016-07-11 ValidFAA registration status code V: Valid registration. All codes
N6503D Cessna
172N
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-07-08 ValidFAA registration status code V: Valid registration. All codes
N46629 Cessna
172K
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2016-07-06 ValidFAA registration status code V: Valid registration. All codes
N160NH Robinson Helicopter
R22 BETA
Helicopter Louisville Helicopter LLC
Louisville, Kentucky
Standard 2016-07-05 ValidFAA registration status code V: Valid registration. All codes
N8444L Cessna
172I
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2016-07-01 ValidFAA registration status code V: Valid registration. All codes
N8600D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2016-07-01 ValidFAA registration status code V: Valid registration. All codes
N88085 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2016-07-01 ValidFAA registration status code V: Valid registration. All codes
N98893 Cessna
172P
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2016-07-01 ValidFAA registration status code V: Valid registration. All codes
N1887G Champion
7GCBC
Fixed-wing, single engine Individual owner
South Dakota
Standard 2016-06-30 ValidFAA registration status code V: Valid registration. All codes
N56098 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2016-06-30 ValidFAA registration status code V: Valid registration. All codes
N3690A Piper
PA-18A 150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2016-06-29 ValidFAA registration status code V: Valid registration. All codes
N191K Globe
GC-1B
Fixed-wing, single engine Individual owner
Georgia
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N20332 Cessna
172M
Fixed-wing, single engine N20332 LLC
Opa Locka, Florida
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N349JM Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N547FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N733QQ Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N78553 Cessna
172K
Fixed-wing, single engine Shop Branch Equipment CO INC
Marble Falls, Texas
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N9889G Cessna
172L
Fixed-wing, single engine Wright Flight INC
Tucson, Arizona
Standard 2016-06-28 ValidFAA registration status code V: Valid registration. All codes
N518RM Mesaros Robert M
RV6-A
Fixed-wing, single engine Co-owned owner
Wisconsin
Experimental 2016-06-27 ValidFAA registration status code V: Valid registration. All codes
N9556V Cessna
172M
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2016-06-27 ValidFAA registration status code V: Valid registration. All codes
N29430 Cessna
177
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2016-06-24 ValidFAA registration status code V: Valid registration. All codes
N737ZG Cessna
172N
Fixed-wing, single engine Duck Air LLC
Mooresville, North Carolina
Standard 2016-06-24 ValidFAA registration status code V: Valid registration. All codes
N43208 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2016-06-23 ValidFAA registration status code V: Valid registration. All codes
N47204 Mcarthur
STARDUSTER TOO SA300
Fixed-wing, single engine Individual owner
New York
Experimental 2016-06-23 ValidFAA registration status code V: Valid registration. All codes
N7514R Piper
PA-28-140
Fixed-wing, single engine N7514R LLC
Las Vegas, Nevada
Standard 2016-06-23 ValidFAA registration status code V: Valid registration. All codes
N5061G Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-06-22 ValidFAA registration status code V: Valid registration. All codes
N5248W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2016-06-21 ValidFAA registration status code V: Valid registration. All codes
N98887 Cessna
172P
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-06-21 ValidFAA registration status code V: Valid registration. All codes
N158FJ Piper
PA-18-150
Fixed-wing, single engine N3955B CORP Trustee
Wilmington, Delaware
Standard 2016-06-20 ValidFAA registration status code V: Valid registration. All codes
N29239 Cessna
172M
Fixed-wing, single engine Gibson Aviation Services LLC
Hudson, Wisconsin
Standard 2016-06-20 ValidFAA registration status code V: Valid registration. All codes
N7696F Piper
PA-28-151
Fixed-wing, single engine Pompano Senior Squadron Flying Club INC
Pompano Beach, Florida
Standard 2016-06-20 ValidFAA registration status code V: Valid registration. All codes
N8442R Piper
PA-28-140
Fixed-wing, single engine Bandon Aviation LLC
Bandon, Oregon
Standard 2016-06-20 ValidFAA registration status code V: Valid registration. All codes
N8471S Piper
PA-28-161
Fixed-wing, single engine Individual owner
Ohio
Standard 2016-06-20 ValidFAA registration status code V: Valid registration. All codes
N126PS Kang Sukhdev S
RV-9A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2016-06-15 ValidFAA registration status code V: Valid registration. All codes
N3424T Cessna
177
Fixed-wing, single engine Wiggains David
Canyon, Texas
Standard 2016-06-15 ValidFAA registration status code V: Valid registration. All codes
N8421D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-06-15 ValidFAA registration status code V: Valid registration. All codes
N948DB Piper
PA-22
Fixed-wing, single engine Individual owner
West Virginia
Standard 2016-06-15 ValidFAA registration status code V: Valid registration. All codes
N76MM Piper
PA-18-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2016-06-14 ValidFAA registration status code V: Valid registration. All codes
N75791 Cessna
172N
Fixed-wing, single engine D L S Aviation Services INC
Wilmington, Delaware
Standard 2016-06-13 ValidFAA registration status code V: Valid registration. All codes
N18DH Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2016-06-10 ValidFAA registration status code V: Valid registration. All codes
N7034R Piper
PA-28-140
Fixed-wing, single engine Macallen Chemical INC
Monroe, Louisiana
Standard 2016-06-10 ValidFAA registration status code V: Valid registration. All codes
N74935 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-06-10 ValidFAA registration status code V: Valid registration. All codes
N6949W Piper
PA-28-140
Fixed-wing, single engine SA Fliers LLC
Venice, Florida
Standard 2016-06-09 ValidFAA registration status code V: Valid registration. All codes
N19722 Cessna
172L
Fixed-wing, single engine Autumn Transportation LLC
Nashville, Tennessee
Standard 2016-06-08 ValidFAA registration status code V: Valid registration. All codes
N2851G Piper
PA-28-161
Fixed-wing, single engine N2851G LLC
Lagrange, Georgia
Standard 2016-06-07 ValidFAA registration status code V: Valid registration. All codes
N46415 Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2016-06-07 ValidFAA registration status code V: Valid registration. All codes
N8688D Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Multiple 2016-06-07 ValidFAA registration status code V: Valid registration. All codes
N9040K Piper
PA-28-161
Fixed-wing, single engine Gidden Aviation LLC
Katy, Texas
Standard 2016-06-07 ValidFAA registration status code V: Valid registration. All codes
N101ST Branum James Richard
RV-4
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2016-06-06 ValidFAA registration status code V: Valid registration. All codes
N5151R Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2016-06-06 ValidFAA registration status code V: Valid registration. All codes
N5239T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2016-06-06 ValidFAA registration status code V: Valid registration. All codes
N739EH Cessna
172N
Fixed-wing, single engine Dairy Air INC
Wyoming, Pennsylvania
Standard 2016-06-06 ValidFAA registration status code V: Valid registration. All codes
N8740N Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2016-06-06 ValidFAA registration status code V: Valid registration. All codes
N326RF Frank Richard A
VANS RV 4
Fixed-wing, single engine Co-owned owner
Nevada
Experimental 2016-06-02 ValidFAA registration status code V: Valid registration. All codes
N6145D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2016-06-02 ValidFAA registration status code V: Valid registration. All codes
N84811 Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2016-06-02 ValidFAA registration status code V: Valid registration. All codes
N4835T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-06-01 ValidFAA registration status code V: Valid registration. All codes
N54WE Douglas E Wilson
SP150
Fixed-wing, single engine Individual owner
Kansas
Experimental 2016-06-01 ValidFAA registration status code V: Valid registration. All codes
N617W Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Texas
Standard 2016-06-01 ValidFAA registration status code V: Valid registration. All codes
N737KM Cessna
172N
Fixed-wing, single engine Co-owned owner
Connecticut
Standard 2016-06-01 ValidFAA registration status code V: Valid registration. All codes
N95008 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2016-06-01 ValidFAA registration status code V: Valid registration. All codes
N105EB Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2016-05-31 ValidFAA registration status code V: Valid registration. All codes
N13833 Piper
PA-18-150
Fixed-wing, single engine Fox Kevin B
Wasilla, Alaska
Standard 2016-05-31 ValidFAA registration status code V: Valid registration. All codes
N198BJ American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2016-05-27 ValidFAA registration status code V: Valid registration. All codes
N38248 Piper
PA-28-161
Fixed-wing, single engine Plane Training LLC
Rapid City, South Dakota
Standard 2016-05-27 ValidFAA registration status code V: Valid registration. All codes
N183RF Costello Raymond E
REBEL
Fixed-wing, single engine Individual owner
Oregon
Experimental 2016-05-26 ValidFAA registration status code V: Valid registration. All codes
N7134R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2016-05-26 ValidFAA registration status code V: Valid registration. All codes
N80407 Robinson Helicopter
R22 BETA
Helicopter N80407 LLC
Rehoboth Beach, Delaware
Standard 2016-05-26 ValidFAA registration status code V: Valid registration. All codes
N68519 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Georgia
Standard 2016-05-25 ValidFAA registration status code V: Valid registration. All codes
N724GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Individual owner
Ohio
Standard 2016-05-25 ValidFAA registration status code V: Valid registration. All codes
N13481 Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2016-05-24 ValidFAA registration status code V: Valid registration. All codes
N6255D Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2016-05-24 ValidFAA registration status code V: Valid registration. All codes
N80550 Globe
GC-1B
Fixed-wing, single engine Individual owner
California
Standard 2016-05-24 ValidFAA registration status code V: Valid registration. All codes
N35434 Cessna
172I
Fixed-wing, single engine Chalk 2 INC
Apple Valley, California
Standard 2016-05-19 ValidFAA registration status code V: Valid registration. All codes
N64215 Cessna
172M
Fixed-wing, single engine
Standard 2016-05-19 ValidFAA registration status code V: Valid registration. All codes
N84634 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2016-05-19 ValidFAA registration status code V: Valid registration. All codes
N298T Piper
PA-18 105
Fixed-wing, single engine Truair LLC
Chaska, Minnesota
Standard 2016-05-18 ValidFAA registration status code V: Valid registration. All codes
N3020Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Maryland
Standard 2016-05-18 ValidFAA registration status code V: Valid registration. All codes
N1459E Cessna
172N
Fixed-wing, single engine N Hollywood Optimist Club Youth & Comm Svc Fndtn
Van Nuys, California
Standard 2016-05-17 ValidFAA registration status code V: Valid registration. All codes
N1534J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2016-05-17 ValidFAA registration status code V: Valid registration. All codes
N478TW Cessna
172M
Fixed-wing, single engine Tumbleweed Leasing Company INC
Salt Lake City, Utah
Standard 2016-05-17 ValidFAA registration status code V: Valid registration. All codes
N7108L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2016-05-17 ValidFAA registration status code V: Valid registration. All codes
N84351 Cessna
172K
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2016-05-17 ValidFAA registration status code V: Valid registration. All codes
N7183R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2016-05-16 ValidFAA registration status code V: Valid registration. All codes
N9576C Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2016-05-16 ValidFAA registration status code V: Valid registration. All codes
N166GA Slingsby
T67C
Fixed-wing, single engine Je-5 Enterprises LLC
Alpharetta, Georgia
Experimental 2016-05-13 ValidFAA registration status code V: Valid registration. All codes
N29415 Cessna
177
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2016-05-13 ValidFAA registration status code V: Valid registration. All codes
N30278 Cessna
172M
Fixed-wing, single engine Individual owner
Iowa
Multiple 2016-05-13 ValidFAA registration status code V: Valid registration. All codes
N5357W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2016-05-12 ValidFAA registration status code V: Valid registration. All codes
N20219 Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2016-05-11 ValidFAA registration status code V: Valid registration. All codes
N6811H Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2016-05-11 ValidFAA registration status code V: Valid registration. All codes
N8753N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-05-11 ValidFAA registration status code V: Valid registration. All codes
N9992V Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2016-05-11 ValidFAA registration status code V: Valid registration. All codes
N172RW Cessna
172N
Fixed-wing, single engine D Gordon Aviation INC
La Jolla, California
Standard 2016-05-10 ValidFAA registration status code V: Valid registration. All codes
N3017H Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2016-05-10 ValidFAA registration status code V: Valid registration. All codes
N4791E Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2016-05-09 ValidFAA registration status code V: Valid registration. All codes
N739YH Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2016-05-09 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.