The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 2026

Lycoming IO-320 series

1,707 aircraft on the U.S. register carry a Lycoming IO-320 series engine, rated at about 150 horsepower. The Piper PA-30 Twin Comanche is the model most often fitted with it (808 aircraft). The aircraft carrying it were built between 1956 and 2025.

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 IO-320 series. FAA spelling: IO-320 SERIES.

Fitted to model families

Piper PA-30 Twin Comanche808Bellanca 7 Citabria185Champion 7 Citabria and Champ135Bellanca 8 Decathlon and Scout124Piper PA-39 Twin Comanche C/R68Cessna 172 Skyhawk26Piper PA-28 Cherokee, Warrior, Archer and Arrow15Piper PA-18 Super Cub8Piper PA-22 Tri-Pacer and Colt4Pitts Special S-13Beechcraft D952Cessna 177 Cardinal2

Piper PA-30 Twin Comanche · Bellanca 7 Citabria · Champion 7 Citabria and Champ · Bellanca 8 Decathlon and Scout · Piper PA-39 Twin Comanche C/R · Cessna 172 Skyhawk · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Piper PA-18 Super Cub · Piper PA-22 Tri-Pacer and Colt · Pitts Special S-1

Where they are owner's state

Texas153Florida146California144Georgia71Delaware59Washington54Illinois52Alabama49Michigan48Ohio46

Kind of aircraft

Piston twins882 (52%)Piston singles824 (48%)Gliders1 (0.1%)

When the aircraft were built by decade

0208415622830193019401950196019701980199020002010192020

What the FAA has certified, ordered and been told about the Lycoming IO-320 series the component layer

The design is held under 1 type certificate (1E12, held by Lycoming Engines). The FAA has issued 30 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 43 failure reports with the FAA since 1995, 8 of them in the last ten years.

FAA orders 30 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
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2011-08-162011-15-10 · Fuel servos · engine
2009-02-092009-02-03 · Fuel injection servos · engine

All orders naming the Lycoming IO-320 series

Failure reports 43 since · what operators and shops told the FAA

0245700051423125

Parts most often reported as the reports name them

Bolt12Spar5Carburetor2Servo2B-Nut1Bearing1Blade1Bulkhead1Capacitor1Commutator1

Latest reports

2025-06-30Impulse Coupling: destroyed
2023-12-09Hose Connector: disconnected
2022-11-02Bearing: worn
2022-02-24Carburetor: leaking
2021-04-30Exhaust Pipe: cracked

Certificates and bulletins

1E12Type certificate held by Lycoming Engines · 32 models listed · revised April 4, 2018

Safety bulletins 9 · advice, not orders

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,...
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft

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-io-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 1,707

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N8938Y Piper
PA-39
Fixed-wing, multi-engine University of Alaska Anchorage
Anchorage, Alaska
Standard 2017-09-08 ValidFAA registration status code V: Valid registration. All codes
N762KG American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N7HT Piper
PA-30
Fixed-wing, multi-engine Johns Aviation LLC
Dawson, Georgia
Standard 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N8320Y Piper
PA-30
Fixed-wing, multi-engine Kling Aviation INC
Friendswood, Texas
Standard 2017-09-01 ValidFAA registration status code V: Valid registration. All codes
N238DM Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N22BC Bellanca
7KCAB
Fixed-wing, single engine Sky Shark Aviation LLC
Brandon, Mississippi
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N8132Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
New Mexico
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N86585 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2017-08-21 ValidFAA registration status code V: Valid registration. All codes
N13GP Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Illinois
Standard 2017-08-11 ValidFAA registration status code V: Valid registration. All codes
N71SG Stevenson George
LANCAIR 320
Fixed-wing, single engine Rocket Sauce Engineering LLC
Columbia, Missouri
Experimental 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N1684G Champion
7KCAB
Fixed-wing, single engine Individual owner
Kansas
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N64859 Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2017-07-20 ValidFAA registration status code V: Valid registration. All codes
N8RH Hill Roy A C
WHISPER RG
Fixed-wing, single engine Individual owner
California
Experimental 2017-07-17 ValidFAA registration status code V: Valid registration. All codes
N8619Y Piper
PA-30
Fixed-wing, multi-engine Nuse Aviation LLC
Hollidaysburg, Pennsylvania
Standard 2017-07-14 ValidFAA registration status code V: Valid registration. All codes
N101PR Pryde W A/Rust B R
RV-6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-06-27 ValidFAA registration status code V: Valid registration. All codes
N57399 Bellanca
8KCAB
Fixed-wing, single engine Aerobatic 8Kcab Holdings LLC
Murchison, Texas
Standard 2017-06-21 ValidFAA registration status code V: Valid registration. All codes
N88172 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-06-20 ValidFAA registration status code V: Valid registration. All codes
N4743M Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N3405F Cessna
177
Fixed-wing, single engine Go Up High LLC
Grafton, Wisconsin
Standard 2017-06-13 ValidFAA registration status code V: Valid registration. All codes
N7694S Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-06-07 ValidFAA registration status code V: Valid registration. All codes
N8164Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
New Hampshire
Standard 2017-05-25 ValidFAA registration status code V: Valid registration. All codes
N8682Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Wisconsin
Standard 2017-05-24 ValidFAA registration status code V: Valid registration. All codes
N5103X Champion
7KCAB
Fixed-wing, single engine Plane and Simple LLC
Lakewood, Colorado
Standard 2017-05-17 ValidFAA registration status code V: Valid registration. All codes
N7561Y Piper
PA-30
Fixed-wing, multi-engine Stinson Aviation LLC
Middletown, Delaware
Standard 2017-05-10 ValidFAA registration status code V: Valid registration. All codes
N747KP Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N7526F Champion
7KCAB
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N820LP Pack James
RV-9A
Fixed-wing, single engine Individual owner
California
Experimental 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N8963Y Piper
PA-39
Fixed-wing, multi-engine Ness Rent A Car INC
Fargo, North Dakota
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N320PD Doran Peter Dds
LANCAIR 320
Fixed-wing, single engine Individual owner
Virginia
Experimental 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N98A Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-05-01 ValidFAA registration status code V: Valid registration. All codes
N222CA Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Oregon
Standard 2017-04-21 ValidFAA registration status code V: Valid registration. All codes
N71BB Piper
PA-30
Fixed-wing, multi-engine Mitchell Trans
Timnath, Colorado
Multiple 2017-04-13 ValidFAA registration status code V: Valid registration. All codes
N8286Y Piper
PA-30
Fixed-wing, multi-engine Coub Industries INC
Fairfield, California
Multiple 2017-04-13 ValidFAA registration status code V: Valid registration. All codes
N613F Piper
PA-39
Fixed-wing, multi-engine Plane Fun INC Tr Trustee
Snellville, Georgia
Standard 2017-04-11 ValidFAA registration status code V: Valid registration. All codes
N8811Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2017-04-06 ValidFAA registration status code V: Valid registration. All codes
N7128Y Piper
PA-30
Fixed-wing, multi-engine Air Mods and Repair CORP
Robbinsville, New Jersey
Standard 2017-04-03 ValidFAA registration status code V: Valid registration. All codes
N748PK Haller Kurt L
VANS RV-9A
Fixed-wing, single engine Individual owner
California
Experimental 2017-03-31 ValidFAA registration status code V: Valid registration. All codes
N11BE Ebbinga William R
VANS RV-9A
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2017-03-27 ValidFAA registration status code V: Valid registration. All codes
N741TJ Piper
PA-30
Fixed-wing, multi-engine Individual owner
South Dakota
Standard 2017-03-22 ValidFAA registration status code V: Valid registration. All codes
N7626Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Arkansas
Standard 2017-03-13 ValidFAA registration status code V: Valid registration. All codes
N8602S Wing
D-1
Fixed-wing, multi-engine Individual owner
New York
Standard 2017-03-13 ValidFAA registration status code V: Valid registration. All codes
N420V Walter Ray
RV6A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-03-08 ValidFAA registration status code V: Valid registration. All codes
N128MM Cloyd Paul C
GLASAIR SH-2
Fixed-wing, single engine Individual owner
California
Experimental 2017-03-02 ValidFAA registration status code V: Valid registration. All codes
N3091U Yanda Nelvin L
LANCAIR 320
Fixed-wing, single engine Exaqt Consultant Group
Madison, Alabama
Experimental 2017-01-25 ValidFAA registration status code V: Valid registration. All codes
N44YU Fogarty Jerrold J
MUSTANG II
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2017-01-19 ValidFAA registration status code V: Valid registration. All codes
N7155Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Oregon
Standard 2017-01-19 ValidFAA registration status code V: Valid registration. All codes
N236CC Calcote Clarence E
GLASAIR RG
Fixed-wing, single engine Prop and Jet Air Museum
Romoland, California
Experimental 2017-01-09 ValidFAA registration status code V: Valid registration. All codes
N60HA Strauch Henry/Alice
GLASAIR
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N8647 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
New York
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N37RP Pearson Richard L
RV-3
Fixed-wing, single engine Individual owner
South Dakota
Experimental 2016-12-16 ValidFAA registration status code V: Valid registration. All codes
N5077X Champion
7KCAB
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2016-12-14 ValidFAA registration status code V: Valid registration. All codes
N7469Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2016-12-13 ValidFAA registration status code V: Valid registration. All codes
N7196Y Piper
PA-30
Fixed-wing, multi-engine Aircraft & Aviation Professionals LLC
Coldwater, Michigan
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N88351 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2016-11-23 ValidFAA registration status code V: Valid registration. All codes
N8396Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Multiple 2016-11-21 ValidFAA registration status code V: Valid registration. All codes
N7171Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2016-11-14 ValidFAA registration status code V: Valid registration. All codes
N539RV Rhodes Mike A
RV-9A
Fixed-wing, single engine Individual owner
Oregon
Experimental 2016-11-03 ValidFAA registration status code V: Valid registration. All codes
N65697 Cessna
172P
Fixed-wing, single engine Individual owner
Nebraska
Standard 2016-10-31 ValidFAA registration status code V: Valid registration. All codes
N276JS Piper
PA-30
Fixed-wing, multi-engine Eagle Flight Academy LLC
Owensboro, Kentucky
Standard 2016-10-27 ValidFAA registration status code V: Valid registration. All codes
N6389N Champion
7KCAB
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-09-30 ValidFAA registration status code V: Valid registration. All codes
N72DB Blanton
PITTS SPECIAL
Fixed-wing, single engine Individual owner
Alabama
Experimental 2016-09-28 ValidFAA registration status code V: Valid registration. All codes
N41797 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Florida
Standard 2016-09-27 ValidFAA registration status code V: Valid registration. All codes
N206RG Piper
PA-30
Fixed-wing, multi-engine Vne LLC
Dowagiac, Michigan
Standard 2016-09-26 ValidFAA registration status code V: Valid registration. All codes
N8726V Bellanca
7KCAB
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2016-09-21 ValidFAA registration status code V: Valid registration. All codes
N8217Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Missouri
Standard 2016-09-20 ValidFAA registration status code V: Valid registration. All codes
N53889 Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2016-09-19 ValidFAA registration status code V: Valid registration. All codes
N745MS Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2016-09-13 ValidFAA registration status code V: Valid registration. All codes
N8294Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2016-09-09 ValidFAA registration status code V: Valid registration. All codes
N8595Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
South Dakota
Standard 2016-08-23 ValidFAA registration status code V: Valid registration. All codes
N1388 Bushby
MUSTANG II
Fixed-wing, single engine Individual owner
Texas
Experimental 2016-08-16 ValidFAA registration status code V: Valid registration. All codes
N8701Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2016-08-11 ValidFAA registration status code V: Valid registration. All codes
N7893Y Piper
PA-30
Fixed-wing, multi-engine Withheld at owner's request
Standard 2016-07-21 ValidFAA registration status code V: Valid registration. All codes
N50TD Piper
PA-30
Fixed-wing, multi-engine Pa-30 LLC
Appleton, Wisconsin
Standard 2016-07-20 ValidFAA registration status code V: Valid registration. All codes
N8224Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2016-07-07 ValidFAA registration status code V: Valid registration. All codes
N8665Y Piper
PA-30
Fixed-wing, multi-engine Rebelair LLC
Stevens Point, Wisconsin
Standard 2016-07-01 ValidFAA registration status code V: Valid registration. All codes
N8857Y Piper
PA-39
Fixed-wing, multi-engine Co-owned owner
Arizona
Standard 2016-06-02 ValidFAA registration status code V: Valid registration. All codes
N7406Y Piper
PA-30
Fixed-wing, multi-engine Tucker Engineering Associates INC
Locust, North Carolina
Standard 2016-05-26 ValidFAA registration status code V: Valid registration. All codes
N7746Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2016-05-23 ValidFAA registration status code V: Valid registration. All codes
N7131Y Piper
PA-30
Fixed-wing, multi-engine Great Lakes Air Ventures LLC
Mason, Michigan
Standard 2016-05-19 ValidFAA registration status code V: Valid registration. All codes
N5154X Champion
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2016-05-18 ValidFAA registration status code V: Valid registration. All codes
N170MM Mcneese Robert A
MIDGET MUSTANG 1
Fixed-wing, single engine Individual owner
California
Experimental 2016-05-10 ValidFAA registration status code V: Valid registration. All codes
N2235W Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2016-05-10 ValidFAA registration status code V: Valid registration. All codes
N8854Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Florida
Standard 2016-05-10 ValidFAA registration status code V: Valid registration. All codes
N7093Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
South Carolina
Standard 2016-03-19 ValidFAA registration status code V: Valid registration. All codes
N8475Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Virginia
Standard 2016-03-19 ValidFAA registration status code V: Valid registration. All codes
N201NR Hankins Robert A
RV-4
Fixed-wing, single engine Individual owner
Alabama
Experimental 2016-03-17 ValidFAA registration status code V: Valid registration. All codes
N8261Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Texas
Standard 2016-03-17 ValidFAA registration status code V: Valid registration. All codes
N11YY Piper
PA-30
Fixed-wing, multi-engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2016-03-10 ValidFAA registration status code V: Valid registration. All codes
N154WK Bellanca
7KCAB
Fixed-wing, single engine Obx Airplanes LLC
Manteo, North Carolina
Standard 2016-01-26 ValidFAA registration status code V: Valid registration. All codes
N68SC Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2016-01-19 ValidFAA registration status code V: Valid registration. All codes
N8035Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
New York
Standard 2016-01-11 ValidFAA registration status code V: Valid registration. All codes
N918Y Piper
PA-30
Fixed-wing, multi-engine International Air Services INC Trustee
Carson City, Nevada
Standard 2016-01-08 ValidFAA registration status code V: Valid registration. All codes
N3999Y Champion
7KCAB
Fixed-wing, single engine Individual owner
Minnesota
Standard 2016-01-06 ValidFAA registration status code V: Valid registration. All codes
N11660 Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2015-12-28 ValidFAA registration status code V: Valid registration. All codes
N53982 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Iowa
Standard 2015-12-18 ValidFAA registration status code V: Valid registration. All codes
N103PG Piper
PA-30
Fixed-wing, multi-engine Hnd Operations LLC
Henderson, Nevada
Standard 2015-12-17 ValidFAA registration status code V: Valid registration. All codes
N1606G Champion
7KCAB
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2015-12-12 ValidFAA registration status code V: Valid registration. All codes
N7017Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2015-12-12 ValidFAA registration status code V: Valid registration. All codes
N5067X Champion
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2015-12-05 ValidFAA registration status code V: Valid registration. All codes
N7819Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2015-12-05 ValidFAA registration status code V: Valid registration. All codes
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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.