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
N5239G Cessna
172N
Fixed-wing, single engine Individual owner
Missouri
Standard 2018-04-19 ValidFAA registration status code V: Valid registration. All codes
N5415D Cessna
172N
Fixed-wing, single engine Silverhawk Aviation Academy LLC
Caldwell, Idaho
Standard 2018-04-19 ValidFAA registration status code V: Valid registration. All codes
N9794U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Arkansas
Standard 2018-04-19 ValidFAA registration status code V: Valid registration. All codes
N9911W Piper
PA-28-140
Fixed-wing, single engine Category One Aviation LLC
Atascadero, California
Standard 2018-04-19 ValidFAA registration status code V: Valid registration. All codes
N1122M Meyer Jeremie D
MEYER CUB
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2018-04-18 ValidFAA registration status code V: Valid registration. All codes
N18LR Robbins Laine
RV 4
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2018-04-18 ValidFAA registration status code V: Valid registration. All codes
N19740 Cessna
172L
Fixed-wing, single engine Individual owner
Kentucky
Standard 2018-04-18 ValidFAA registration status code V: Valid registration. All codes
N3338Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2018-04-18 ValidFAA registration status code V: Valid registration. All codes
N3483T Cessna
177
Fixed-wing, single engine Individual owner
Nebraska
Standard 2018-04-18 ValidFAA registration status code V: Valid registration. All codes
N739CC Cessna
172N
Fixed-wing, single engine Citadelle Holdings LLC
Wilmington, Delaware
Standard 2018-04-18 ValidFAA registration status code V: Valid registration. All codes
N150EP Piper
PA-18A 150
Fixed-wing, single engine Individual owner
New York
Restricted 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N202PY Cessna
172N
Fixed-wing, single engine Eastern Stearman INC Trustee
Leesburg, Virginia
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N3446T Cessna
177
Fixed-wing, single engine R & B Air LLC
Clayton, Missouri
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N36EH Hymen
THORP T-18
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N4358J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N445R Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N486K Krugel Irwin A
LANCAIR 320
Fixed-wing, single engine Individual owner
Arizona
Experimental 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N5784F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N8364C Piper
PA-28-151
Fixed-wing, single engine Individual owner
Washington
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N20541 Cessna
172M
Fixed-wing, single engine University of Alaska Anchorage
Anchorage, Alaska
Standard 2018-04-16 ValidFAA registration status code V: Valid registration. All codes
N4000Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2018-04-16 ValidFAA registration status code V: Valid registration. All codes
N60MR Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Co-owned owner
Tennessee
Standard 2018-04-16 ValidFAA registration status code V: Valid registration. All codes
N404MH Call One Inc/Mitchell Hargin
ZENITH CH750
Fixed-wing, single engine Call One INC
Clarinda, Iowa
Experimental 2018-04-13 ValidFAA registration status code V: Valid registration. All codes
N4127J Piper
PA-28-140
Fixed-wing, single engine Van Aero LLC
Dover, Delaware
Standard 2018-04-13 ValidFAA registration status code V: Valid registration. All codes
N82669 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Colorado
Restricted 2018-04-13 ValidFAA registration status code V: Valid registration. All codes
N8899L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
New Jersey
Standard 2018-04-13 ValidFAA registration status code V: Valid registration. All codes
N9107D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Restricted 2018-04-13 ValidFAA registration status code V: Valid registration. All codes
N243AK Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2018-04-12 ValidFAA registration status code V: Valid registration. All codes
N348MA American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2018-04-12 ValidFAA registration status code V: Valid registration. All codes
N6860H Cessna
172M
Fixed-wing, single engine University of Michigan Flyers
Ann Arbor, Michigan
Standard 2018-04-12 ValidFAA registration status code V: Valid registration. All codes
N97075 Cessna
172P
Fixed-wing, single engine Sopwith Camel Flying Club LLC
Salt Lake City, Utah
Standard 2018-04-12 ValidFAA registration status code V: Valid registration. All codes
N9918U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2018-04-12 ValidFAA registration status code V: Valid registration. All codes
N1359R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Minnesota
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N4402X Piper
PA-28-151
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N5045T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N51RV Rockwell Kent Norman
RV-3
Fixed-wing, single engine Individual owner
Colorado
Experimental 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N58B Cessna
150H
Fixed-wing, single engine Co-owned owner
Montana
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N734BF Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N80414 Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N8052N Piper
PA-28-140
Fixed-wing, single engine Bcaeronautics LLC
Houston, Texas
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N996MW Cessna
172M
Fixed-wing, single engine Wiehl In the Sky LLC
Mount Juliet, Tennessee
Standard 2018-04-11 ValidFAA registration status code V: Valid registration. All codes
N5819L American
AA-5
Fixed-wing, single engine Individual owner
Florida
Standard 2018-04-10 ValidFAA registration status code V: Valid registration. All codes
N9338C Piper
PA-28-161
Fixed-wing, single engine Smart4 LLC
Kissimmee, Florida
Standard 2018-04-10 ValidFAA registration status code V: Valid registration. All codes
N1541J Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2018-04-06 ValidFAA registration status code V: Valid registration. All codes
N2222P Piper
PA-23-150
Fixed-wing, multi-engine Advance Aviation INC
Dover, Delaware
Standard 2018-04-06 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N2621M Piper
PA-28-161
Fixed-wing, single engine Western Oklahoma Aviation LLC
Clinton, Oklahoma
Standard 2018-04-06 ValidFAA registration status code V: Valid registration. All codes
N593SP Piper
PA-28-140
Fixed-wing, single engine Full Rudder Flyers LLC
Mesa, Arizona
Standard 2018-04-06 ValidFAA registration status code V: Valid registration. All codes
N6000W Piper
PA-28-140
Fixed-wing, single engine Port Townsend Aero Museum
Port Townsend, Washington
Standard 2018-04-06 ValidFAA registration status code V: Valid registration. All codes
N734ST Cessna
172N
Fixed-wing, single engine Leading Edge Aviation INC
Bend, Oregon
Standard 2018-04-06 ValidFAA registration status code V: Valid registration. All codes
N8376P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Multiple 2018-04-06 ValidFAA registration status code V: Valid registration. All codes
N13946 Cessna
172M
Fixed-wing, single engine Air Capital Aviators Club
Wichita, Kansas
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N43080 Piper
PA-28-151
Fixed-wing, single engine Red Baron Rentals LLC
Jacksonville, Florida
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N6104D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N65767 Cessna
172P
Fixed-wing, single engine Chu'S Sky LLC
Brandon, Florida
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N6783B Piper
PA-18A 150
Fixed-wing, single engine Blue Sky Aviation INC
Peyton, Colorado
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N7203G Cessna
172K
Fixed-wing, single engine Venard INC
Murdo, South Dakota
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N737DS Cessna
172N
Fixed-wing, single engine Empty Nest LLC
Glen Ellen, California
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N911P Cessna
172L
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-04-05 ValidFAA registration status code V: Valid registration. All codes
N13727 Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2018-04-04 ValidFAA registration status code V: Valid registration. All codes
N4523R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-04-04 ValidFAA registration status code V: Valid registration. All codes
N739PL Cessna
172N
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2018-04-04 ValidFAA registration status code V: Valid registration. All codes
N8013N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2018-04-04 ValidFAA registration status code V: Valid registration. All codes
N104PT Olson George
PITTS S1
Fixed-wing, single engine Individual owner
California
Experimental 2018-04-03 ValidFAA registration status code V: Valid registration. All codes
N46177 Cessna
172I
Fixed-wing, single engine Individual owner
Arizona
Standard 2018-04-03 ValidFAA registration status code V: Valid registration. All codes
N9439E Cessna
172N
Fixed-wing, single engine Silverhawk Aviation Academy LLC
Caldwell, Idaho
Standard 2018-04-03 ValidFAA registration status code V: Valid registration. All codes
N9519D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Louisiana
Standard 2018-04-03 ValidFAA registration status code V: Valid registration. All codes
N4481Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2018-04-02 ValidFAA registration status code V: Valid registration. All codes
N8449Z Piper
PA-28-161
Fixed-wing, single engine Individual owner
New York
Standard 2018-03-30 ValidFAA registration status code V: Valid registration. All codes
N9707D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Michigan
Standard 2018-03-30 ValidFAA registration status code V: Valid registration. All codes
N19625 Cessna
172L
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2018-03-29 ValidFAA registration status code V: Valid registration. All codes
N5335D Cessna
172N
Fixed-wing, single engine Individual owner
Iowa
Standard 2018-03-29 ValidFAA registration status code V: Valid registration. All codes
N613FL Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2018-03-29 ValidFAA registration status code V: Valid registration. All codes
N75797 Cessna
172N
Fixed-wing, single engine Eralet INC
Middletown, Delaware
Standard 2018-03-29 ValidFAA registration status code V: Valid registration. All codes
N8260Y Piper
PA-28-161
Fixed-wing, single engine New Peach Aviation LLC
Brooks, Georgia
Standard 2018-03-29 ValidFAA registration status code V: Valid registration. All codes
N13058 Cessna
172M
Fixed-wing, single engine Individual owner
Montana
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N13JT Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N29468 Cessna
177
Fixed-wing, single engine Individual owner
Arizona
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N7019E Robinson Helicopter
R22
Helicopter Individual owner
Texas
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N7208J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N734SE Cessna
172N
Fixed-wing, single engine Jkg LLC
Murfreesboro, Tennessee
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N4004Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2018-03-27 ValidFAA registration status code V: Valid registration. All codes
N77GB Mason Gerald
VANS RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-03-27 ValidFAA registration status code V: Valid registration. All codes
N8192D Piper
PA-18-150
Fixed-wing, single engine Glasheen Sean T
Bethel, Alaska
Standard 2018-03-27 ValidFAA registration status code V: Valid registration. All codes
N9685U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Tennessee
Standard 2018-03-27 ValidFAA registration status code V: Valid registration. All codes
N2386Z Beech
23
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-03-26 ValidFAA registration status code V: Valid registration. All codes
N3665R Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-03-26 ValidFAA registration status code V: Valid registration. All codes
N6717E Cessna
172N
Fixed-wing, single engine Denrow Limited Lc
Shawnee, Oklahoma
Standard 2018-03-26 ValidFAA registration status code V: Valid registration. All codes
N7150K Piper
PA-20
Fixed-wing, single engine Individual owner
Alaska
Restricted 2018-03-26 ValidFAA registration status code V: Valid registration. All codes
N14326 Piper
PA-18-150
Fixed-wing, single engine Osprey Island Lodge INC
Eagle River, Alaska
Restricted 2018-03-23 ValidFAA registration status code V: Valid registration. All codes
N2572L Cessna
A150L
Fixed-wing, single engine Individual owner
California
Standard 2018-03-23 ValidFAA registration status code V: Valid registration. All codes
N4286P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Florida
Standard 2018-03-22 ValidFAA registration status code V: Valid registration. All codes
N47719 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-03-22 ValidFAA registration status code V: Valid registration. All codes
N461H Robinson Helicopter
R22 BETA
Helicopter Hawaii Pacific Aviation INC
Kailua Kona, Hawaii
Standard 2018-03-21 ValidFAA registration status code V: Valid registration. All codes
N739HP Cessna
172N
Fixed-wing, single engine Hawaii Pacific Aviation INC
Kailua Kona, Hawaii
Standard 2018-03-21 ValidFAA registration status code V: Valid registration. All codes
N817AB Robinson Helicopter
R22 BETA
Helicopter Hawaii Pacific Aviation INC
Kailua Kona, Hawaii
Standard 2018-03-21 ValidFAA registration status code V: Valid registration. All codes
N86617 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Pennsylvania
Multiple 2018-03-21 ValidFAA registration status code V: Valid registration. All codes
N1228U Cessna
172M
Fixed-wing, single engine Big Sky Aviation LLC
Glenmora, Louisiana
Standard 2018-03-20 ValidFAA registration status code V: Valid registration. All codes
N738ZU Cessna
172N
Fixed-wing, single engine Skydance Aviation LLC
Chesapeake, Virginia
Standard 2018-03-20 ValidFAA registration status code V: Valid registration. All codes
N8857 Bellanca
7GCAA
Fixed-wing, single engine Aviation Management Systems LLC
Fallbrook, California
Standard 2018-03-20 ValidFAA registration status code V: Valid registration. All codes
N8805C Piper
PA-22-150
Fixed-wing, single engine Individual owner
South Carolina
Standard 2018-03-19 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.