The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 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
N8081Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2022-08-27 ValidFAA registration status code V: Valid registration. All codes
N85C Champion
7KCAB
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N8852Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Alabama
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N9045L Champion
7KCAB
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-08-22 ValidFAA registration status code V: Valid registration. All codes
N64776 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N8387Y Piper
PA-30
Fixed-wing, multi-engine N8387Y LLC
Huntsville, Alabama
Standard 2022-08-15 ValidFAA registration status code V: Valid registration. All codes
N8239Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Alabama
Standard 2022-08-13 ValidFAA registration status code V: Valid registration. All codes
N9077L Champion
7KCAB
Fixed-wing, single engine Individual owner
Vermont
Standard 2022-08-08 ValidFAA registration status code V: Valid registration. All codes
N7438Y Piper
PA-30
Fixed-wing, multi-engine Franklin Aviation Services LLC
Inverness, Florida
Standard 2022-08-05 ValidFAA registration status code V: Valid registration. All codes
N7275Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Louisiana
Standard 2022-08-04 ValidFAA registration status code V: Valid registration. All codes
N5952 Pitts-Thomas
PITTS SPECIAL
Fixed-wing, single engine Pitts 5952 LLC
Bow, Washington
Experimental 2022-08-03 ValidFAA registration status code V: Valid registration. All codes
N7189Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2022-08-02 ValidFAA registration status code V: Valid registration. All codes
N7258Y Piper
PA-30
Fixed-wing, multi-engine Jprg Aviation INC
Orlando, Florida
Standard 2022-08-02 ValidFAA registration status code V: Valid registration. All codes
N8376Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2022-08-02 ValidFAA registration status code V: Valid registration. All codes
N8880Y Piper
PA-39
Fixed-wing, multi-engine Plane Fun INC Tr Trustee
Snellville, Georgia
Standard 2022-08-01 ValidFAA registration status code V: Valid registration. All codes
N88337 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Nebraska
Standard 2022-07-30 ValidFAA registration status code V: Valid registration. All codes
N41694 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2022-07-28 ValidFAA registration status code V: Valid registration. All codes
N57CW Walker J C
LANCAIR 320
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-07-25 ValidFAA registration status code V: Valid registration. All codes
N8844Y Piper
PA-39
Fixed-wing, multi-engine Streater Aviation LLC
Weirsdale, Florida
Standard 2022-07-22 ValidFAA registration status code V: Valid registration. All codes
N65HR Rasmussen Harry R
GLASAIR
Fixed-wing, single engine St Squared LLC
Powell Butte, Oregon
Experimental 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N7475Y Piper
PA-30
Fixed-wing, multi-engine Overseas Aviaton INC
Wilmington, Delaware
Standard 2022-07-02 ValidFAA registration status code V: Valid registration. All codes
N99LY Kanczuzewski Douglas J
LONGEZ
Fixed-wing, single engine Individual owner
California
Experimental 2022-06-27 ValidFAA registration status code V: Valid registration. All codes
N8432Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Alabama
Standard 2022-06-25 ValidFAA registration status code V: Valid registration. All codes
N323PR Bellanca
7KCAB
Fixed-wing, single engine Sport Flying USA Services LLC
Lititz, Pennsylvania
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N7600F Champion
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N7331Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Standard 2022-06-04 ValidFAA registration status code V: Valid registration. All codes
N8326Y Piper
PA-30
Fixed-wing, multi-engine Eastern Stearman INC Trustee
Leesburg, Virginia
Standard 2022-06-01 ValidFAA registration status code V: Valid registration. All codes
N86682 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
California
Standard 2022-05-27 ValidFAA registration status code V: Valid registration. All codes
N5179X Champion
7KCAB
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-05-17 ValidFAA registration status code V: Valid registration. All codes
N3466P Kitfox Llc
RANS S-16 SHEKARI
Fixed-wing, single engine Kitfox LLC
Minden, Louisiana
Experimental 2022-05-16 ValidFAA registration status code V: Valid registration. All codes
N8836Y Piper
PA-30
Fixed-wing, multi-engine Lodge Aviation LLC
Lewes, Delaware
Standard 2022-05-10 ValidFAA registration status code V: Valid registration. All codes
N1001A Gutzman Charles W
FALCO F8
Fixed-wing, single engine 1St Avenue Ttc LLC
Los Angeles, California
Experimental 2022-05-04 ValidFAA registration status code V: Valid registration. All codes
N8663 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2022-05-04 ValidFAA registration status code V: Valid registration. All codes
N86974 Bellanca
8KCAB
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2022-05-03 ValidFAA registration status code V: Valid registration. All codes
N7119Y Piper
PA-30
Fixed-wing, multi-engine Flydunn.Com INC
Jacksonville, Florida
Standard 2022-04-30 ValidFAA registration status code V: Valid registration. All codes
N87038 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2022-04-29 ValidFAA registration status code V: Valid registration. All codes
N8489Y Piper
PA-30
Fixed-wing, multi-engine Sorbi Aviation INC
El Cajon, California
Standard 2022-04-26 ValidFAA registration status code V: Valid registration. All codes
N7572Y Piper
PA-30
Fixed-wing, multi-engine Black and Faraday INC
Pencil Bluff, Arkansas
Standard 2022-04-07 ValidFAA registration status code V: Valid registration. All codes
N76ML Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-04-06 ValidFAA registration status code V: Valid registration. All codes
N87084 Bellanca
7KCAB
Fixed-wing, single engine Flying Wild Arizona LLC
Anthem, Arizona
Standard 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N34EE Piper
PA-30
Fixed-wing, multi-engine Codingflyboy LLC
Hayward, California
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N8667Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N9963Q Piper
PA-18-135
Fixed-wing, single engine Individual owner
Alaska
Multiple 2022-03-22 ValidFAA registration status code V: Valid registration. All codes
N4FR Bellanca
7KCAB
Fixed-wing, single engine W J Rothwell Ranch CO
Hyannis, Nebraska
Standard 2022-03-19 ValidFAA registration status code V: Valid registration. All codes
N824SV Cerchio Gerard J
LANCAIR 320
Fixed-wing, single engine Individual owner
California
Experimental 2022-03-16 ValidFAA registration status code V: Valid registration. All codes
N17MB Piper
PA-30
Fixed-wing, multi-engine Aerocorp LLC
San Antonio, Texas
Standard 2022-03-10 ValidFAA registration status code V: Valid registration. All codes
N2809C Cessna
170B
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-03-05 ValidFAA registration status code V: Valid registration. All codes
N8753V Bellanca
8KCAB
Fixed-wing, single engine Scott Gorski Aviation Aerobatics
Bothell, Washington
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N475TV Piper
PA-30
Fixed-wing, multi-engine Paine Twin Comanche LLC
Redmond, Washington
Standard 2022-02-24 ValidFAA registration status code V: Valid registration. All codes
N711KK Piper
PA-30
Fixed-wing, multi-engine Withheld at owner's request
Standard 2022-02-24 ValidFAA registration status code V: Valid registration. All codes
N8607Y Piper
PA-30
Fixed-wing, multi-engine Ms Aero INC
Lakeville, Ohio
Standard 2022-02-23 ValidFAA registration status code V: Valid registration. All codes
N8906Y Piper
PA-39
Fixed-wing, multi-engine Withheld at owner's request
Standard 2022-02-23 ValidFAA registration status code V: Valid registration. All codes
N7596Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2022-02-22 ValidFAA registration status code V: Valid registration. All codes
N8111Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Minnesota
Standard 2022-02-10 ValidFAA registration status code V: Valid registration. All codes
N57411 Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N7555Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N88AP Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N7861Y Piper
PA-30
Fixed-wing, multi-engine 7861Y LLC
Long Beach, California
Standard 2022-01-20 ValidFAA registration status code V: Valid registration. All codes
N8244Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N8020Y Piper
PA-30
Fixed-wing, multi-engine Snead State Community College
Boaz, Alabama
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N77CH Piper
PA-39
Fixed-wing, multi-engine Tcb Management INC
Chiefland, Florida
Standard 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N7902Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2022-01-05 ValidFAA registration status code V: Valid registration. All codes
N5066X Champion
7KCAB
Fixed-wing, single engine Chandelle LLC
Chelsea, Alabama
Standard 2021-12-22 ValidFAA registration status code V: Valid registration. All codes
N7420Y Piper
PA-30
Fixed-wing, multi-engine Legacy Aviation INC
Stuart, Florida
Standard 2021-12-21 ValidFAA registration status code V: Valid registration. All codes
N7761Y Piper
PA-30
Fixed-wing, multi-engine Bytes Aviation LLC
Poolesville, Maryland
Standard 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N7713Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Florida
Standard 2021-12-14 ValidFAA registration status code V: Valid registration. All codes
N1620G Champion
7KCAB
Fixed-wing, single engine Individual owner
New Mexico
Standard 2021-12-11 ValidFAA registration status code V: Valid registration. All codes
N815PT Testory Perry E
TESTORY RV-3
Fixed-wing, single engine Individual owner
Illinois
Experimental 2021-12-06 ValidFAA registration status code V: Valid registration. All codes
N266LC Piper
PA-30
Fixed-wing, multi-engine Cambridge Aviation LLC
Hillsborough, New Jersey
Standard 2021-12-01 ValidFAA registration status code V: Valid registration. All codes
N7115Y Piper
PA-30
Fixed-wing, multi-engine Mcdade Nimrod R III
Smyrna, Tennessee
Standard 2021-11-18 ValidFAA registration status code V: Valid registration. All codes
N5086X Champion
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2021-11-13 ValidFAA registration status code V: Valid registration. All codes
N7871Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2021-11-13 ValidFAA registration status code V: Valid registration. All codes
N8022Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Restricted 2021-11-13 ValidFAA registration status code V: Valid registration. All codes
N320GS Shattuck George W
LANCAIR 320
Fixed-wing, single engine Augusta Technical College
Augusta, Georgia
Experimental 2021-11-10 ValidFAA registration status code V: Valid registration. All codes
N8804Y Piper
PA-30
Fixed-wing, multi-engine Martino Aviation LLC
Wilmington, Delaware
Standard 2021-11-02 ValidFAA registration status code V: Valid registration. All codes
N1844G Champion
7KCAB
Fixed-wing, single engine Twenty One Miles LLC
Woodland Hills, California
Standard 2021-10-30 ValidFAA registration status code V: Valid registration. All codes
N86595 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2021-10-28 ValidFAA registration status code V: Valid registration. All codes
N42JT Tinsman James W
RV-6
Fixed-wing, single engine Filtersource LLC
Fort Collins, Colorado
Experimental 2021-10-25 ValidFAA registration status code V: Valid registration. All codes
N68LR Piper
PA-30
Fixed-wing, multi-engine Ms Aero INC
Lakeville, Ohio
Standard 2021-10-21 ValidFAA registration status code V: Valid registration. All codes
N95428 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-10-20 ValidFAA registration status code V: Valid registration. All codes
N7486Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Oklahoma
Standard 2021-10-05 ValidFAA registration status code V: Valid registration. All codes
N7652Y Piper
PA-30
Fixed-wing, multi-engine Metro West Ambulance
Hillsboro, Oregon
Standard 2021-10-04 ValidFAA registration status code V: Valid registration. All codes
N1982D Harm David A
VANS RV9A
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2021-09-29 ValidFAA registration status code V: Valid registration. All codes
N3522 Piper
PA-30
Fixed-wing, multi-engine Individual owner
Standard 2021-09-20 ValidFAA registration status code V: Valid registration. All codes
N4760A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2021-09-15 ValidFAA registration status code V: Valid registration. All codes
N7062Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2021-09-14 ValidFAA registration status code V: Valid registration. All codes
N7588Y Piper
PA-30
Fixed-wing, multi-engine K&Cs Saveacomanche LLC
Spring Lake Park, Minnesota
Standard 2021-09-14 ValidFAA registration status code V: Valid registration. All codes
N7DT Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Florida
Standard 2021-09-09 ValidFAA registration status code V: Valid registration. All codes
N5WK Piper
PA-30
Fixed-wing, multi-engine Ez Air INC
Wilmington, Delaware
Standard 2021-09-01 ValidFAA registration status code V: Valid registration. All codes
N34RA Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N7070Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Oklahoma
Standard 2021-08-31 ValidFAA registration status code V: Valid registration. All codes
N53883 Bellanca
7KCAB
Fixed-wing, single engine Manzo Brothers Aviation LLC
Gainesville, Georgia
Standard 2021-08-25 ValidFAA registration status code V: Valid registration. All codes
N209JF Champion
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2021-08-20 ValidFAA registration status code V: Valid registration. All codes
N8530Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Standard 2021-08-18 ValidFAA registration status code V: Valid registration. All codes
N7703Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Indiana
Standard 2021-08-14 ValidFAA registration status code V: Valid registration. All codes
N626DW Piper
PA-30
Fixed-wing, multi-engine Wings of Freedom LLC
Big Bear Lake, California
Standard 2021-08-12 ValidFAA registration status code V: Valid registration. All codes
N7826Y Piper
PA-30
Fixed-wing, multi-engine International Air Services INC Trustee
Carson City, Nevada
Standard 2021-08-11 ValidFAA registration status code V: Valid registration. All codes
N8924Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
South Carolina
Restricted 2021-08-09 ValidFAA registration status code V: Valid registration. All codes
N8322Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Ohio
Standard 2021-07-31 ValidFAA registration status code V: Valid registration. All codes
N835BC Cole Robert
RV-6
Fixed-wing, single engine Shoreline Home Services INC
Wilmington, North Carolina
Experimental 2021-07-24 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 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.