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
N9643D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N3930K Piper
PA-28-140
Fixed-wing, single engine Quick Jeremy R
Bremen, Indiana
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N56580 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N5890U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N9001D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N9013L Champion
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N9808J Cessna
172N
Fixed-wing, single engine Ptosis LLC
Fair Oaks, California
Standard 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N13573 Cessna
172M
Fixed-wing, single engine Davis Flying Services LLC
Gaithersburg, Maryland
Standard 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N183A Trophy Aero Inc
GLASAIR SHA
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N3062L Piper
PA-28-161
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N810FS Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N8545D Piper
PA-22-150
Fixed-wing, single engine Four-Five-Delta LLC
Mountainville, New York
Standard 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N9545W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New York
Standard 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N1697P Piper
PA-22
Fixed-wing, single engine Individual owner
California
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N22964 Cessna
172M
Fixed-wing, single engine Straight Flight Aviation LLC
Goliad, Texas
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N3109T Cessna
177
Fixed-wing, single engine S-J Air LLC
Salem, Missouri
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N5804U Piper
PA-28-140
Fixed-wing, single engine Sand Piper Air LLC
Endicott, New York
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N6000Z Willerton Hazen Dennis
VANS RV6A
Fixed-wing, single engine Individual owner
Utah
Experimental 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N777CY Headrick James C
RV6A
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N172VT Cessna
172M
Fixed-wing, single engine Fly Vermont LLC
Swanton, Vermont
Standard 2017-08-24 ValidFAA registration status code V: Valid registration. All codes
N2364J Beech
23
Fixed-wing, single engine Individual owner
Nevada
Standard 2017-08-24 ValidFAA registration status code V: Valid registration. All codes
N3305P Piper
PA-23-160
Fixed-wing, multi-engine Air Royal
Middletown, Delaware
Standard 2017-08-24 ValidFAA registration status code V: Valid registration. All codes
N4119E Piper
PA-18-150
Fixed-wing, single engine Bigham David A
Phoenix, Arizona
Standard 2017-08-24 ValidFAA registration status code V: Valid registration. All codes
N46510 Cessna
172K
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-08-24 ValidFAA registration status code V: Valid registration. All codes
N737ZR Cessna
172N
Fixed-wing, single engine Tennessee Seaplane Company LLC
Knoxville, Tennessee
Standard 2017-08-24 ValidFAA registration status code V: Valid registration. All codes
N597JF Piper
PA-28-181
Fixed-wing, single engine Diamond Travel LLC
Olive Branch, Mississippi
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N64SB Bachnak Stephen R
FALCO
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N7682D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N8100N Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N92511 Piper
PA-12
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N944CB Cessna
172M
Fixed-wing, single engine California Baptist University
Riverside, California
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N2875Q Cessna
172L
Fixed-wing, single engine Lani Lea Sky Tours LLC
Honolulu, Hawaii
Standard 2017-08-22 ValidFAA registration status code V: Valid registration. All codes
N40374 Robinson Helicopter
R22 BETA
Helicopter Solo Exteriors CO LLC
Seminole, Texas
Standard 2017-08-22 ValidFAA registration status code V: Valid registration. All codes
N41217 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-08-22 ValidFAA registration status code V: Valid registration. All codes
N1645J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N35560 Cessna
172I
Fixed-wing, single engine Individual owner
Maine
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N4017F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N4133P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Ohio
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N41897 Piper
PA-28-151
Fixed-wing, single engine Unlimited Upside LLC
Boggstown, Indiana
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N43GF Cessna
172P
Fixed-wing, single engine Co-owned owner
Washington
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N70196 Cessna
172M
Fixed-wing, single engine South Shore Flying Club INC
South Weymouth, Massachusetts
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N739PC Cessna
172N
Fixed-wing, single engine Ocala Aviation Services INC
Ocala, Florida
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N80774 Cessna
172M
Fixed-wing, single engine Dugger Aviation LLC
Merritt Island, Florida
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N88RD Robinson Helicopter
R22 BETA
Helicopter Lafayette Flying Service LLC
Lafayette, Louisiana
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N3642Q Beech
A23-19
Fixed-wing, single engine Individual owner
Florida
Standard 2017-08-18 ValidFAA registration status code V: Valid registration. All codes
N122JD American Champion Aircraft
7GCBC
Fixed-wing, single engine Grasshopper Aviation LLC
Hockley, Texas
Standard 2017-08-17 ValidFAA registration status code V: Valid registration. All codes
N488RR Spelman
ANDERSON-KINGFISHER
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-08-17 ValidFAA registration status code V: Valid registration. All codes
N7573K Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Restricted 2017-08-17 ValidFAA registration status code V: Valid registration. All codes
N55416 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2017-08-16 ValidFAA registration status code V: Valid registration. All codes
N82748 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2017-08-16 ValidFAA registration status code V: Valid registration. All codes
N111DQ Kellenberger Ricky Don
GLASAIR I TAILDRGGER
Fixed-wing, single engine Medical Surgical Clinic West Bend PC
Fort Scott, Kansas
Experimental 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N15372 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N2260M Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N28DK Dixon Hubert E
VERIVIGGEN
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N4144J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N6176J Piper
PA-28-151
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N7291J Piper
PA-28-140
Fixed-wing, single engine Centerline Equipment CORP
Waukegan, Illinois
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N7374D Cessna
172N
Fixed-wing, single engine Big e LLC
Lemoore, California
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N8186N Piper
PA-28-140
Fixed-wing, single engine Individual owner
West Virginia
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N96HG Georgen Bruce
MURPHY REBEL
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N9823L Cessna
172P
Fixed-wing, single engine Silverhawk Aviation Academy LLC
Caldwell, Idaho
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N98923 Cessna
172P
Fixed-wing, single engine Costa Flying Service INC
Painted Post, New York
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N1710J Piper
PA-28-140
Fixed-wing, single engine Open Skies Aviation LLC
Wellington, Kansas
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N2627N Robinson Helicopter
R22 BETA
Helicopter Individual owner
Missouri
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N4391Q Cessna
172L
Fixed-wing, single engine Springville Flying Club
Spanish Fork, Utah
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N46250 Cessna
172I
Fixed-wing, single engine Individual owner
New York
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N737NF Cessna
172N
Fixed-wing, single engine My Way Aviation LLC
Weston, Florida
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N80669 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N13337 Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2017-08-11 ValidFAA registration status code V: Valid registration. All codes
N1758V Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-11 ValidFAA registration status code V: Valid registration. All codes
N75TC Cessna
172N
Fixed-wing, single engine Individual owner
Oregon
Standard 2017-08-11 ValidFAA registration status code V: Valid registration. All codes
N111ZY Cessna
172P
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N75231 Piper
PA-28-151
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N803HP Cessna
172P
Fixed-wing, single engine P & W Investments INC
Wilmington, Delaware
Standard 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N9887L Cessna
172P
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2017-08-10 ValidFAA registration status code V: Valid registration. All codes
N12779 Cessna
172M
Fixed-wing, single engine Mile High Flyers Club INC
Fort Valley, Virginia
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N310KB Wilson Jeffrey B
VANS AIRCRAFT RV-6
Fixed-wing, single engine Schulte Delmar L
Cottonwood, California
Experimental 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N43885 Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N47673 Piper
PA-28-161
Fixed-wing, single engine Falcon View Aviation LLC
Mckinney, Texas
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N5689U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N6670H Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N6753B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Washington
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N9174M Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N2244M Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2017-08-08 ValidFAA registration status code V: Valid registration. All codes
N2553Y Piper
PA-28-161
Fixed-wing, single engine Macair Aviation LLC
Xenia, Ohio
Standard 2017-08-07 ValidFAA registration status code V: Valid registration. All codes
N44546 Piper
PA-28-180
Fixed-wing, single engine Polka Todd M
New Philadelphia, Ohio
Standard 2017-08-04 ValidFAA registration status code V: Valid registration. All codes
N98037 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-04 ValidFAA registration status code V: Valid registration. All codes
N1203T Piper
PA-28-140
Fixed-wing, single engine Professional Locators & Acquisition Specialists Ll
Severance, Colorado
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N1797P Piper
PA-22-160
Fixed-wing, single engine Individual owner
New York
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N1963 Herring Henry Herbert
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N249P Gougeon Jan C
RV 4
Fixed-wing, single engine Individual owner
Michigan
Experimental 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N26334 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N29001 Cessna
172M
Fixed-wing, single engine Geske Sales & Service
Enderlin, North Dakota
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N320JA Malsack Joseph
LANCAIR 320
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N3336Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Iowa
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N5384K Cessna
172P
Fixed-wing, single engine Vascular Wings LLC
Friendswood, Texas
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N80670 Cessna
172M
Fixed-wing, single engine Jb Aviation Management INC
Wonder Lake, Illinois
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N8138E Mccabe Peggy L
GLASTAR
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N9793U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N252MD Frederick Mark L
FREDERICK RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-08-02 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.