The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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.

Fitted to model families

Cessna 172 Skyhawk9,462Piper 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

Texas2,350California2,123Florida2,076Alaska1,796Washington1,004Ohio731Georgia718Minnesota686North Carolina674Arizona659

Kind of aircraft

Piston singles26,597 (97%)Piston twins414 (2%)Helicopters303 (1%)Gliders1 (0.0%)

When the aircraft were built by decade

02,8515,7028,55411,405193019401950196019701980199020002010552020

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

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 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

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

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N1790J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N1870J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N20093 Cessna
172M
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N2239L Beech
B19
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N2628P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N4154A Piper
PA-18-150
Fixed-wing, single engine San Saba Management CO LLC
Lakeway, Texas
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N41AW Piper
PA-28-140
Fixed-wing, single engine Walker James A
Birmingham, Alabama
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N4346A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Delaware
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N54955 Cessna
172P
Fixed-wing, single engine Space 5 LLC
Fayetteville, Georgia
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N7314G Cessna
172K
Fixed-wing, single engine Kittle Aviation LLC
Wichita, Kansas
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N734JN Cessna
172N
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N73917 Cessna
172N
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N81LS Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N9733D Piper
PA-22-150
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-09-25 ValidFAA registration status code V: Valid registration. All codes
N12550 Cessna
172M
Fixed-wing, single engine N12550 LLC
Greenville, Mississippi
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N132JF Fox James E
GLASTAR
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N378AK Mark Mitzel
PA-18 EXP
Fixed-wing, single engine Individual owner
Alaska
Experimental 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N4290H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N519TC Piper
PA-18
Fixed-wing, single engine Individual owner
Washington
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N6486W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N7012R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N7109L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N723RV Hackney Harry A
RV-3
Fixed-wing, single engine Smith Stuart T
Murrieta, California
Experimental 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N73319 Cessna
172M
Fixed-wing, single engine My Way Aviation LLC
Weston, Florida
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N79975 Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N819WW Weber Wallace W
ACRO SPORT II
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N9582D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N98428 Cessna
172P
Fixed-wing, single engine T&W Aviation LLC
Pinehurst, Texas
Standard 2025-09-24 ValidFAA registration status code V: Valid registration. All codes
N13659 Cessna
172M
Fixed-wing, single engine Pilot Instructional Center LLC
Kansas City, Missouri
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N32258 Piper
PA-28-180
Fixed-wing, single engine Wing Rentals LLC
Phoenix, Arizona
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N512TM Cessna
172N
Fixed-wing, single engine Southern Flight Aviation LLC
Bainbridge, Georgia
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N5472H Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N6506D Cessna
172N
Fixed-wing, single engine Whitefish Mountain Acft Rentals & Flt School LLC
Whitefish, Montana
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N6843H Cessna
172M
Fixed-wing, single engine Whitefish Mountain Acft Rentals and Flt School LLC
Whitefish, Montana
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N715FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N72WL Cochran Charles J
RV-6
Fixed-wing, single engine Individual owner
Indiana
Experimental 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N747SZ Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine N747Sz LLC
Chapel Hill, North Carolina
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N8727F Piper
PA-28-140
Fixed-wing, single engine Vancura Aviation LLC
Seffner, Florida
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N98251 Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-09-23 ValidFAA registration status code V: Valid registration. All codes
N111BE Champion
7GCBC
Fixed-wing, single engine 7Gcbeec LLC
Boise, Idaho
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N123FC Cessna
172K
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N15671 Piper
PA-28-140
Fixed-wing, single engine On Final Aviation LLC
Brookland, Arkansas
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N3933Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Multiple 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N42024 Cessna
172M
Fixed-wing, single engine White Wings Air INC
Jacksonville, Florida
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N5464D Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N5926U Piper
PA-28-140
Fixed-wing, single engine Iron Flyer of Cuzamil LLC
Lewes, Delaware
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N6711J Piper
PA-28-140
Fixed-wing, single engine Firecrest LLC
Holly Springs, Mississippi
Standard 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N83642 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Restricted 2025-09-22 ValidFAA registration status code V: Valid registration. All codes
N717WN Noonan Warren
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2025-09-21 ValidFAA registration status code V: Valid registration. All codes
N5185Q Mendenhall David D
COZY
Fixed-wing, single engine
Experimental 2025-09-20 ValidFAA registration status code V: Valid registration. All codes
N6026G Lucko George
GLASAIR II S FT
Fixed-wing, single engine Ace Pdr LLC
Lewisville, Texas
Experimental 2025-09-20 ValidFAA registration status code V: Valid registration. All codes
N9610U Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-09-20 ValidFAA registration status code V: Valid registration. All codes
N122H American Champion Aircraft
7GCBC
Fixed-wing, single engine Safeline Aviation LLC
Apache Junction, Arizona
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N1487P Piper
PA-23-150
Fixed-wing, multi-engine Individual owner
Nevada
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N36351 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N5283K Cessna
172P
Fixed-wing, single engine Northwest Wings LLC
Hillsboro, Oregon
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N537JH Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N5536U Piper
PA-28-140
Fixed-wing, single engine Pittman Discover Flight LLC
Oshkosh, Wisconsin
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N727WM Beech
B19
Fixed-wing, single engine MD Air Ops LLC
High Springs, Florida
Standard 2025-09-19 ValidFAA registration status code V: Valid registration. All codes
N3706Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2025-09-18 ValidFAA registration status code V: Valid registration. All codes
N46731 Cessna
172K
Fixed-wing, single engine Laurel Highlands Aeronautical Academy LLC
Latrobe, Pennsylvania
Restricted 2025-09-18 ValidFAA registration status code V: Valid registration. All codes
N4888G Cessna
172N
Fixed-wing, single engine 578 Airplane Leasing INC
Kissimmee, Florida
Standard 2025-09-18 ValidFAA registration status code V: Valid registration. All codes
N5542F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-09-18 ValidFAA registration status code V: Valid registration. All codes
N2384Q Beech
23
Fixed-wing, single engine Tailwind Ventures LLC
Three Rivers, Michigan
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N2830J Piper
PA-28-161
Fixed-wing, single engine Individual owner
Connecticut
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N3684Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N416SD Champion
7GCAA
Fixed-wing, single engine Tailwheel Adventures LLC
Celebration, Florida
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N4271J Piper
PA-28-140
Fixed-wing, single engine Double P Creative LLC
Pleasanton, Texas
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N73063 Cessna
172M
Fixed-wing, single engine Oregon State Flying Club
Corvallis, Oregon
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N734RT Cessna
172N
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N8014N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N8115H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Nevada
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N98151 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2025-09-17 ValidFAA registration status code V: Valid registration. All codes
N207DM Mckenna Hugh E
MCKENNA CHARGER
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N2254P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N28L Piper
PA-28-140
Fixed-wing, single engine Arkad Ventures LLC
Coral Gables, Florida
Standard 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N29643 Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N365PC Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N4606R Piper
PA-28-140
Fixed-wing, single engine Aiken Pilot Training LLC
Johnston, South Carolina
Standard 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N4637R Piper
PA-28-140
Fixed-wing, single engine Fly Me LLC
Sparta, Tennessee
Standard 2025-09-16 ValidFAA registration status code V: Valid registration. All codes
N1376T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N1387U Cessna
172M
Fixed-wing, single engine Cp Aircraft Leasing LLC
Danville, California
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N150KS Piper
PA-20
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N3957Q Cessna
172L
Fixed-wing, single engine Rwm Aviation LLC
Kalispell, Montana
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N6326E Cessna
172N
Fixed-wing, single engine Kevin Formica INC
Boca Raton, Florida
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N7355D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N7912L Beech
A23-19
Fixed-wing, single engine Individual owner
California
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N84582 Cessna
172K
Fixed-wing, single engine Luxaire Center INC
Deland, Florida
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N8463L Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N931JB Box James E Jr
RV-6
Fixed-wing, single engine Pyxis Volare LLC
Winter Garden, Florida
Experimental 2025-09-15 ValidFAA registration status code V: Valid registration. All codes
N172TX Cessna
172N
Fixed-wing, single engine D & L Innovations LLC
Hendersonville, Tennessee
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N2433M Piper
PA-28-161
Fixed-wing, single engine Harkey Aviation LLC
Sherrills Ford, North Carolina
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N3952K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N61411 Blanchard
STOLP STARDUSTER SA-
Fixed-wing, single engine Vincent Tarissa
Westminster, Colorado
Experimental 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N6470R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N725AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
California
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N77FS Shewmake Floyd E Jr
RV4
Fixed-wing, single engine Individual owner
Illinois
Experimental 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N78538 Cessna
172K
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N814JM Piper
PA-18-150
Fixed-wing, single engine Lake Country Lodge
Port Alsworth, Alaska
Multiple 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
N900FY Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-09-13 ValidFAA registration status code V: Valid registration. All codes
Previous Page 21 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.