The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming O-320 series

27,316 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 (9,463 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.

Fitted to model families

Cessna 172 Skyhawk9,463Piper PA-28 Cherokee, Warrior, Archer and Arrow6,844Piper PA-18 Super Cub2,393Piper PA-22 Tri-Pacer and Colt1,660Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger566Bellanca 7 Citabria563Cessna 177 Cardinal398Piper PA-23 Apache and Aztec347Robinson R22276Champion 7 Citabria and Champ266American Champion Aircraft 7 Citabria and Champ249Piper PA-12 Super Cruiser149

Cessna 172 Skyhawk · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Piper PA-18 Super Cub · Piper PA-22 Tri-Pacer and Colt · Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger · Bellanca 7 Citabria · Cessna 177 Cardinal · Piper PA-23 Apache and Aztec · Robinson R22 · Champion 7 Citabria and Champ

Where they are owner's state

Texas2,349California2,123Florida2,075Alaska1,796Washington1,004Ohio731Georgia718Minnesota686North Carolina674Arizona659

Kind of aircraft

Piston singles26,598 (97%)Piston twins414 (2%)Helicopters303 (1%)Gliders1 (0.0%)

When the aircraft were built by decade

02,8525,7038,55411,406193019401950196019701980199020002010552020

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 Textron Lycoming Avco Corporation). 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

Parts most often reported as the reports name them

Spar18Tube17Cylinder15Bulkhead9Alternator8Control Cable8Bolt7Carburetor7Fitting6Float6

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 Textron Lycoming Avco Corporation · 59 models listed · revised February 19, 1998

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

These connections as data: /graph/engine/lycoming-o-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,316

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N6250W Piper
PA-28-140
Fixed-wing, single engine Cummings Property Restoration LLC
Bullard, Texas
Standard 2026-06-14 ValidFAA registration status code V: Valid registration. All codes
N2620M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Multiple 2026-06-13 ValidFAA registration status code V: Valid registration. All codes
N534WC Carter William R O
RV-6A
Fixed-wing, single engine Individual owner
California
Experimental 2026-06-13 ValidFAA registration status code V: Valid registration. All codes
N78242 Cessna
172K
Fixed-wing, single engine 176Fps LLC
Marthasville, Missouri
Standard 2026-06-13 ValidFAA registration status code V: Valid registration. All codes
N3290Q Piper
PA-28-161
Fixed-wing, single engine Cape Fear Aviation Maintenance LLC
Fayetteville, North Carolina
Standard 2026-06-12 ValidFAA registration status code V: Valid registration. All codes
N5732E Cessna
172N
Fixed-wing, single engine Individual owner
Ohio
Standard 2026-06-12 ValidFAA registration status code V: Valid registration. All codes
N7275J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2026-06-12 ValidFAA registration status code V: Valid registration. All codes
N836CR Adams Calvin Rex
LONG-EZ
Fixed-wing, single engine Individual owner
Kansas
Experimental 2026-06-12 ValidFAA registration status code V: Valid registration. All codes
N2390W Beech
A23-19
Fixed-wing, single engine Ngk Aviation LLC
West Point, Nebraska
Standard 2026-06-11 ValidFAA registration status code V: Valid registration. All codes
N61990 Cessna
172M
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2026-06-11 ValidFAA registration status code V: Valid registration. All codes
N4136P Piper
PA-23-160
Fixed-wing, multi-engine N4136P LLC
Titusville, Florida
Standard 2026-06-10 ValidFAA registration status code V: Valid registration. All codes
N54PP Piper
PA-22
Fixed-wing, single engine Individual owner
Washington
Standard 2026-06-10 ValidFAA registration status code V: Valid registration. All codes
N6796J Piper
PA-28-140
Fixed-wing, single engine Arcila Daniel
Lakeland, Florida
Standard 2026-06-10 ValidFAA registration status code V: Valid registration. All codes
N147ML Cessna
177
Fixed-wing, single engine Individual owner
Indiana
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N2814M Piper
PA-12
Fixed-wing, single engine Individual owner
Minnesota
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N3076Q Maule
MX-7-160
Fixed-wing, single engine Individual owner
Illinois
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N3964P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Montana
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N4360Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N5860D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arkansas
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N64160 Cessna
172M
Fixed-wing, single engine Glide Slope LLC
East Hampton, New York
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N90HA Cessna
172N
Fixed-wing, single engine Individual owner
Ohio
Standard 2026-06-09 ValidFAA registration status code V: Valid registration. All codes
N417GP Batton Robert L
SH-2
Fixed-wing, single engine Furkin Custom Marine LLC DBA
Tompkinsville, Kentucky
Experimental 2026-06-08 ValidFAA registration status code V: Valid registration. All codes
N162AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Louisiana
Standard 2026-06-07 ValidFAA registration status code V: Valid registration. All codes
N20528 Cessna
172M
Fixed-wing, single engine Vfr Aviation LLC
Clayton, New York
Standard 2026-06-07 ValidFAA registration status code V: Valid registration. All codes
N734DG Cessna
172N
Fixed-wing, single engine Riverside Flight Academy LLC
Riverside, California
Standard 2026-06-07 ValidFAA registration status code V: Valid registration. All codes
N8768N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2026-06-07 ValidFAA registration status code V: Valid registration. All codes
N43375 Piper
PA-28-151
Fixed-wing, single engine Super Fly Aero LLC
Lynn, Massachusetts
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N733HH Cessna
172N
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N733UF Cessna
172N
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N734UM Cessna
172N
Fixed-wing, single engine Sweet Sunshine Produce CO LLC
Ocala, Florida
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N8480R Piper
PA-28-140
Fixed-wing, single engine
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N8987V Cessna
172M
Fixed-wing, single engine Piper Capital Growth Fund LLC
Scottsdale, Arizona
Standard 2026-06-04 ValidFAA registration status code V: Valid registration. All codes
N20364 Cessna
172M
Fixed-wing, single engine Piper Capital Growth Fund LLC
Scottsdale, Arizona
Standard 2026-06-03 ValidFAA registration status code V: Valid registration. All codes
N2128E Cessna
172N
Fixed-wing, single engine Fly for Fun LLC
Rockville, Maryland
Standard 2026-06-03 ValidFAA registration status code V: Valid registration. All codes
N400MA Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-06-03 ValidFAA registration status code V: Valid registration. All codes
N8931V Cessna
172M
Fixed-wing, single engine Williams Aviation Group LLC
Mt Carmel, Tennessee
Standard 2026-06-03 ValidFAA registration status code V: Valid registration. All codes
N172WM Cessna
172P
Fixed-wing, single engine Individual owner
California
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N32702 Piper
PA-28-151
Fixed-wing, single engine Eagle Air Group LLC
Stafford, Virginia
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N4331X Piper
PA-28-140
Fixed-wing, single engine S e D Air LLC
Kimball, South Dakota
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N51871 Cessna
172P
Fixed-wing, single engine Az2026 LLC
Miami, Florida
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N6187W Piper
PA-28-140
Fixed-wing, single engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N7170G Cessna
172K
Fixed-wing, single engine Ss Skyways LLC
Becker, Minnesota
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N8049N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Delaware
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N9895V Cessna
172M
Fixed-wing, single engine Togo Aviation Services LLC
Palmer, Alaska
Standard 2026-06-02 ValidFAA registration status code V: Valid registration. All codes
N12365 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N15955 Piper
PA-28-140
Fixed-wing, single engine Air Wings Enterprise LLC
Roca, Nebraska
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N172TD Cessna
172K
Fixed-wing, single engine Co-owned owner
New York
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N224MM Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N4134Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N5716D Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N656BF Fairchild William R
GLASAIR I
Fixed-wing, single engine Individual owner
Texas
Experimental 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N6695J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N73579 Cessna
172M
Fixed-wing, single engine Officer Properties LLC
Broken Arrow, Oklahoma
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N84897 Cessna
172K
Fixed-wing, single engine Independent Aviation Services LLC
Sachse, Texas
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N9009D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-06-01 ValidFAA registration status code V: Valid registration. All codes
N8764J American
AA-5
Fixed-wing, single engine 374Dk Aviation LLC
Sand Springs, Oklahoma
Standard 2026-05-31 ValidFAA registration status code V: Valid registration. All codes
N9904W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2026-05-31 ValidFAA registration status code V: Valid registration. All codes
N1079Y Piper
PA-28-160
Fixed-wing, single engine Individual owner
Oregon
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N19NJ Cessna
172P
Fixed-wing, single engine N19Nj LLC
Manassas, Virginia
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N2055K Collier Delbert
ACRO SPORT
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N347RA S.O.C.A.T.A.
RALLYE 150 ST
Fixed-wing, single engine Individual owner
Arkansas
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N4885D Cessna
172N
Fixed-wing, single engine Spartan National Holdings LLC
Missoula, Montana
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N5467L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Florida
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N61707 Cessna
172M
Fixed-wing, single engine Spartan National Holdings LLC
Missoula, Montana
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N63WM Collum Aviation Inc
OSPREY II
Fixed-wing, single engine Individual owner
Florida
Experimental 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N6616R Beech
B19
Fixed-wing, single engine Individual owner
Kentucky
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N7319D Cessna
172N
Fixed-wing, single engine N7319D LLC
Port Saint Lucie, Florida
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N739UM Cessna
172N
Fixed-wing, single engine Spartan National Holdings LLC
Missoula, Montana
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N8173E Cessna
172N
Fixed-wing, single engine Sky Equity LLC
Woodbury, Minnesota
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N9391D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Montana
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N9934D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Texas
Standard 2026-05-30 ValidFAA registration status code V: Valid registration. All codes
N13887 Cessna
172M
Fixed-wing, single engine Jkg LLC
Murfreesboro, Tennessee
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N30WH Bellanca
7GCBC
Fixed-wing, single engine Acme Aerosports INC
Huntsville, Alabama
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N44536 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N469JJ Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N7156D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N9678W Piper
PA-28-140
Fixed-wing, single engine Dependable Aviation LLC
Cartersville, Georgia
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N9742W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N97MW Cessna
172M
Fixed-wing, single engine Rudderworks Aviation LLC
Fairfax Station, Virginia
Standard 2026-05-29 ValidFAA registration status code V: Valid registration. All codes
N5008T Piper
PA-28-140
Fixed-wing, single engine S e D Air LLC
Kimball, South Dakota
Standard 2026-05-28 ValidFAA registration status code V: Valid registration. All codes
N6968W Piper
PA-28-140
Fixed-wing, single engine Midgard Aviation LLC
Colton, South Dakota
Standard 2026-05-28 ValidFAA registration status code V: Valid registration. All codes
N4542R Piper
PA-28-140
Fixed-wing, single engine Blue Skies Flying Club LLC
Painesville, Ohio
Standard 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N48DX Zimmerman Gary
GLASAIR I FT
Fixed-wing, single engine Individual owner
Texas
Experimental 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N4910P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N6135D Piper
PA-22-150
Fixed-wing, single engine Super Pacer LLC
San Tan Valley, Arizona
Standard 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N6427R Piper
PA-28-140
Fixed-wing, single engine Northeast Texas Aviation LLC
Chandler, Texas
Standard 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N7023R Piper
PA-28-140
Fixed-wing, single engine Pushpull LLC
Montgomery, Texas
Standard 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N73041 Cessna
172M
Fixed-wing, single engine Max Air Aviation LLC
Carrollton, Georgia
Standard 2026-05-27 ValidFAA registration status code V: Valid registration. All codes
N327AK Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2026-05-26 ValidFAA registration status code V: Valid registration. All codes
N4428Z Piper
PA-18-150
Fixed-wing, single engine
Standard 2026-05-26 ValidFAA registration status code V: Valid registration. All codes
N46091 Cessna
172M
Fixed-wing, single engine Pilot Instructional Center LLC
Kansas City, Missouri
Standard 2026-05-26 ValidFAA registration status code V: Valid registration. All codes
N5191H Piper
PA-14
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2026-05-26 ValidFAA registration status code V: Valid registration. All codes
N55121 Cessna
172P
Fixed-wing, single engine Lifetime Adventures LLC
Bellevue, Michigan
Standard 2026-05-26 ValidFAA registration status code V: Valid registration. All codes
N1341R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Tmp Aviation LLC
Altamonte Springs, Florida
Standard 2026-05-25 ValidFAA registration status code V: Valid registration. All codes
N1802J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2026-05-25 ValidFAA registration status code V: Valid registration. All codes
N2886P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2026-05-25 ValidFAA registration status code V: Valid registration. All codes
N62891 Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2026-05-25 ValidFAA registration status code V: Valid registration. All codes
N80517 Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2026-05-25 ValidFAA registration status code V: Valid registration. All codes
N9592W Piper
PA-28-140
Fixed-wing, single engine Dreamcatcher Aviation LLC
Austin, Texas
Standard 2026-05-25 ValidFAA registration status code V: Valid registration. All codes
N41927 Piper
PA-28-151
Fixed-wing, single engine Individual owner
New York
Standard 2026-05-24 ValidFAA registration status code V: Valid registration. All codes
Previous Page 7 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.