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
N5763F Piper
PA-28-140
Fixed-wing, single engine Sugarloaf Air LLC
Harrison, Arkansas
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N57JS Succop
HATZ CB-1
Fixed-wing, single engine Individual owner
Missouri
Experimental 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N5893U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N6249W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N7294J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N7323G Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N7749D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2025-12-10 ValidFAA registration status code V: Valid registration. All codes
N135RB Piper
PA-18A-135
Fixed-wing, single engine Individual owner
Wyoming
Standard 2025-12-09 ValidFAA registration status code V: Valid registration. All codes
N46643 Cessna
172K
Fixed-wing, single engine Volunteer State Aviation LLC
College Grove, Tennessee
Standard 2025-12-09 ValidFAA registration status code V: Valid registration. All codes
N5175E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2025-12-09 ValidFAA registration status code V: Valid registration. All codes
N9041D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Maine
Standard 2025-12-09 ValidFAA registration status code V: Valid registration. All codes
N1260U Cessna
172M
Fixed-wing, single engine Sigma Aviation LLC
Dover, Delaware
Standard 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N330KR Piper
PA-22-150
Fixed-wing, single engine Cherry Hill Aviation INC
Freetown, Indiana
Standard 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N49EE American Champion Aircraft
7GCBC
Fixed-wing, single engine Lessley Aviation LLC
Carrollton, Mississippi
Standard 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N55TB Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N6462C Piper
PA-28-161
Fixed-wing, single engine A&J Aircraft Leasing INC
Burlington, Colorado
Standard 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N738EA Cessna
172N
Fixed-wing, single engine Matt Plane One LLC
Gilbert, Arizona
Standard 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N78436 Cessna
172K
Fixed-wing, single engine Vp Aviation LLC
Woodstock, New York
Restricted 2025-12-08 ValidFAA registration status code V: Valid registration. All codes
N279RA American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-12-07 ValidFAA registration status code V: Valid registration. All codes
N2979B Bellanca
7GCBC
Fixed-wing, single engine Learn 2 Fly LLC
Seminole, Alabama
Standard 2025-12-07 ValidFAA registration status code V: Valid registration. All codes
N53077 Cessna
172P
Fixed-wing, single engine Megasky Holdings LLC
Charleston, South Carolina
Standard 2025-12-07 ValidFAA registration status code V: Valid registration. All codes
N619CC Piper
PA-18-150
Fixed-wing, single engine Darkhorse Aerospace Holdings LLC
Tampa, Florida
Standard 2025-12-07 ValidFAA registration status code V: Valid registration. All codes
N6727H Cessna
172M
Fixed-wing, single engine Aldora Enterprise LLC
League City, Texas
Standard 2025-12-07 ValidFAA registration status code V: Valid registration. All codes
N118EK Kempkey
THORP T-18
Fixed-wing, single engine Individual owner
California
Experimental 2025-12-06 ValidFAA registration status code V: Valid registration. All codes
N2550B Robinson Helicopter
R22 BETA
Helicopter Southern Utah University
Cedar City, Utah
Standard 2025-12-06 ValidFAA registration status code V: Valid registration. All codes
N50462 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2025-12-06 ValidFAA registration status code V: Valid registration. All codes
N282HG Piper
PA-28-161
Fixed-wing, single engine Compass Rose 2 LLC
Austin, Texas
Standard 2025-12-05 ValidFAA registration status code V: Valid registration. All codes
N283HG Piper
PA-28-161
Fixed-wing, single engine Compas Rose 3 LLC
Corinth, Texas
Standard 2025-12-05 ValidFAA registration status code V: Valid registration. All codes
N401DT Cessna
172P
Fixed-wing, single engine Kairos Holdings LLC
Huntsville, Alabama
Standard 2025-12-05 ValidFAA registration status code V: Valid registration. All codes
N5777W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Texas
Standard 2025-12-05 ValidFAA registration status code V: Valid registration. All codes
N737XZ Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2025-12-05 ValidFAA registration status code V: Valid registration. All codes
N13190 Cessna
172M
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N2363Y Cessna
177
Fixed-wing, single engine Plane Pro Aviation LLC
Shelby, North Carolina
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N3798K Piper
PA-28-140
Fixed-wing, single engine Crosswind Aviation of Oklahoma LLC
Stillwater, Oklahoma
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N4485A Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N475AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Maine
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N6759W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N733YZ Cessna
172N
Fixed-wing, single engine Seaplane Adventures LLC
Cheyenne, Wyoming
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N84659 Cessna
172K
Fixed-wing, single engine Laurel Highlands Aeronautical Academy
Latrobe, Pennsylvania
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N918ML Voshell Frank
RV-4
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N95173 Piper
PA-28-140
Fixed-wing, single engine First Flight Corporation
San Diego, California
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N9686W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2025-12-04 ValidFAA registration status code V: Valid registration. All codes
N171SK Cessna
172N
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N199DP Penman
THORP T-18
Fixed-wing, single engine Individual owner
Indiana
Experimental 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N20660 Cessna
172M
Fixed-wing, single engine Jl Avn LLC
Ontario, Ohio
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N2601S Piper
PA-18-150
Fixed-wing, single engine Hcs Air LLC
Devalls Bluff, Arkansas
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N28TG Ginn Anthony E
THORP T-18
Fixed-wing, single engine Shooting Star Services LLC
Rosamond, California
Experimental 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N3990K Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N6422R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N694AB Piper
PA-22-150
Fixed-wing, single engine Goldpick Dirtworx LLC
Wasilla, Alaska
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N738SU Cessna
172N
Fixed-wing, single engine Nab Aviation Holdings LLC
Cocoa Beach, Florida
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N9842D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Montana
Standard 2025-12-03 ValidFAA registration status code V: Valid registration. All codes
N2622M Robinson Helicopter
R22 MARINER
Helicopter N2622M LLC
Rehoboth Beach, Delaware
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N4327A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N46391 Cessna
172K
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N5171R Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N54190 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N55988 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N65197 Cessna
172P
Fixed-wing, single engine Aviator Education LLC
Greeley, Colorado
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N6704E Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N80230 Cessna
172M
Fixed-wing, single engine Fly Nh Aviation LLC
Bow, New Hampshire
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N9274Y Piper
PA-28-161
Fixed-wing, single engine Flight Club 502 INC
Louisville, Kentucky
Standard 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N96WG Gast William A
RV-6A
Fixed-wing, single engine Individual owner
Alabama
Experimental 2025-12-02 ValidFAA registration status code V: Valid registration. All codes
N4155D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-12-01 ValidFAA registration status code V: Valid registration. All codes
N64CA Cessna
172P
Fixed-wing, single engine Swaz Aviation LLC
Mesa, Arizona
Standard 2025-12-01 ValidFAA registration status code V: Valid registration. All codes
N7270J Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2025-12-01 ValidFAA registration status code V: Valid registration. All codes
N98492 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2025-12-01 ValidFAA registration status code V: Valid registration. All codes
N4498J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2025-11-30 ValidFAA registration status code V: Valid registration. All codes
N5850W Piper
PA-28-160
Fixed-wing, single engine Caside Aviation LLC
Brooklyn, New York
Standard 2025-11-30 ValidFAA registration status code V: Valid registration. All codes
N618J Harnden James A
RV4
Fixed-wing, single engine Individual owner
Georgia
Experimental 2025-11-30 ValidFAA registration status code V: Valid registration. All codes
N680FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-11-30 ValidFAA registration status code V: Valid registration. All codes
N4237Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2025-11-29 ValidFAA registration status code V: Valid registration. All codes
N15768 Piper
PA-28-140
Fixed-wing, single engine Khleb Hub LLC
Palm Coast, Florida
Standard 2025-11-28 ValidFAA registration status code V: Valid registration. All codes
N46349 Cessna
172K
Fixed-wing, single engine Third Step 1 LLC
Gilbert, Arizona
Standard 2025-11-28 ValidFAA registration status code V: Valid registration. All codes
N84076 Cessna
172K
Fixed-wing, single engine Third Step 3 LLC
Gilbert, Arizona
Standard 2025-11-28 ValidFAA registration status code V: Valid registration. All codes
N241E Cessna
172L
Fixed-wing, single engine Piedmont Aviation Leasing LLC
Monticello, Georgia
Standard 2025-11-26 ValidFAA registration status code V: Valid registration. All codes
N745LS Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-11-26 ValidFAA registration status code V: Valid registration. All codes
N75743 Cessna
172N
Fixed-wing, single engine Aerosmith Aviation LLC
Panama City Beach, Florida
Standard 2025-11-26 ValidFAA registration status code V: Valid registration. All codes
N4910D Cessna
172N
Fixed-wing, single engine N4910D LLC
Delavan, Wisconsin
Standard 2025-11-25 ValidFAA registration status code V: Valid registration. All codes
N79514 Cessna
172N
Fixed-wing, single engine Galaxy Aviation LLC
Nantucket, Massachusetts
Standard 2025-11-25 ValidFAA registration status code V: Valid registration. All codes
N80807 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-11-25 ValidFAA registration status code V: Valid registration. All codes
N9238N Maule
MX-7-160
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2025-11-25 ValidFAA registration status code V: Valid registration. All codes
N128CG Cessna
172I
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N1724K Cessna
172L
Fixed-wing, single engine N1724Ken LLC
Minocqua, Wisconsin
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N31600 Piper
PA-28-161
Fixed-wing, single engine Florida 7771 Aviation Assets LLC
Lakeland, Florida
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N53856 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N6611W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N7159G Cessna
172K
Fixed-wing, single engine N7159G LLC
Jacksonville, Arkansas
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N7168L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N7314F Piper
PA-28-140
Fixed-wing, single engine Aero Vantage Aviation Services LLC
Bayonne, New Jersey
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N8161N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Hawaii
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N88322 Bellanca
7GCBC
Fixed-wing, single engine North County Flight Training INC
Carlsbad, California
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N9588U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Rgm LLC
Missoula, Montana
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N9717L Beech
C23
Fixed-wing, single engine Individual owner
South Carolina
Multiple 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N98776 Cessna
172P
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2025-11-24 ValidFAA registration status code V: Valid registration. All codes
N1649G Champion
7GCBC
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2025-11-23 ValidFAA registration status code V: Valid registration. All codes
N5056V Bellanca
7GCBC
Fixed-wing, single engine Spitfire Aviation INC
Wilmington, Delaware
Standard 2025-11-23 ValidFAA registration status code V: Valid registration. All codes
N5156R Cessna
172M
Fixed-wing, single engine Kookaburra Kiwi LLC
Post Falls, Idaho
Standard 2025-11-23 ValidFAA registration status code V: Valid registration. All codes
N737PR Cessna
172N
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2025-11-23 ValidFAA registration status code V: Valid registration. All codes
N95121 Piper
PA-28-140
Fixed-wing, single engine Preston Aviation LLC
Wilmington, Delaware
Standard 2025-11-23 ValidFAA registration status code V: Valid registration. All codes
Previous Page 16 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.