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
N7309Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-05-15 ValidFAA registration status code V: Valid registration. All codes
N7328Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2020-05-14 ValidFAA registration status code V: Valid registration. All codes
N5168T Champion
7KCAB
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-05-12 ValidFAA registration status code V: Valid registration. All codes
N5278X Champion
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2020-05-07 ValidFAA registration status code V: Valid registration. All codes
N96JN Piper
PA-39
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-05-01 ValidFAA registration status code V: Valid registration. All codes
N7777Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2020-04-24 ValidFAA registration status code V: Valid registration. All codes
N2255Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-04-23 ValidFAA registration status code V: Valid registration. All codes
N518CM Piper
PA-30
Fixed-wing, multi-engine Treakle Robert W
Austin, Texas
Standard 2020-04-21 ValidFAA registration status code V: Valid registration. All codes
N7807S Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
California
Standard 2020-04-16 ValidFAA registration status code V: Valid registration. All codes
N46JR Ray Homer A
BEARHAWK PATROL
Fixed-wing, single engine Individual owner
California
Experimental 2020-04-13 ValidFAA registration status code V: Valid registration. All codes
N8084Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-04-13 ValidFAA registration status code V: Valid registration. All codes
N5155T Champion
7KCAB
Fixed-wing, single engine Individual owner
Louisiana
Standard 2020-04-06 ValidFAA registration status code V: Valid registration. All codes
N30NW Piper
PA-30
Fixed-wing, multi-engine Centerline Aerospace INC
Clermont, Florida
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N38760 Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Florida
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N718AM Robert Andre M
RV6
Fixed-wing, single engine Gillespie Ranch LLC
Okanogan, Washington
Experimental 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N7931Y Piper
PA-30
Fixed-wing, multi-engine Cannonball Trucking
Friendswood, Texas
Standard 2020-03-26 ValidFAA registration status code V: Valid registration. All codes
N73Z Piper
PA-30
Fixed-wing, multi-engine Flying Rocks LLC
Sparkill, New York
Standard 2020-03-23 ValidFAA registration status code V: Valid registration. All codes
N86630 Bellanca
8KCAB
Fixed-wing, single engine Pressley Aviation LLC
New London, North Carolina
Standard 2020-03-23 ValidFAA registration status code V: Valid registration. All codes
N287GE Piper
PA-30
Fixed-wing, multi-engine 7Ge Aviation LLC
Southfield, Michigan
Standard 2020-03-19 ValidFAA registration status code V: Valid registration. All codes
N10BJ Hoye
PITTS S-1D
Fixed-wing, single engine Individual owner
New York
Experimental 2020-03-18 ValidFAA registration status code V: Valid registration. All codes
N31DS Whittig
MIDGET MUSTANG
Fixed-wing, single engine Simply Living LLC
Fort Myers, Florida
Experimental 2020-03-17 ValidFAA registration status code V: Valid registration. All codes
N8243Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2020-03-16 ValidFAA registration status code V: Valid registration. All codes
N7334Y Piper
PA-30
Fixed-wing, multi-engine Jg Air LLC
Cape Coral, Florida
Standard 2020-03-12 ValidFAA registration status code V: Valid registration. All codes
N24DL Davis Dewey L
COZY
Fixed-wing, single engine Individual owner
Virginia
Experimental 2020-03-02 ValidFAA registration status code V: Valid registration. All codes
N146W Wolfe Randy L
SWICK T
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2020-02-26 ValidFAA registration status code V: Valid registration. All codes
N19RV Baty Mark A
RV-9A
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2020-02-25 ValidFAA registration status code V: Valid registration. All codes
N91BS Snow Blaine W
GLASAIR II RG
Fixed-wing, single engine Dt Aviation LLC
Bountiful, Utah
Experimental 2020-02-24 ValidFAA registration status code V: Valid registration. All codes
N68514 Bellanca
7KCAB
Fixed-wing, single engine Twin Cities Aviation INC
Yuba City, California
Standard 2020-02-18 ValidFAA registration status code V: Valid registration. All codes
N320HK Kimray Harvey G
LANCAIR 320
Fixed-wing, single engine Individual owner
Massachusetts
Experimental 2020-02-12 ValidFAA registration status code V: Valid registration. All codes
N7604Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Colorado
Standard 2020-02-11 ValidFAA registration status code V: Valid registration. All codes
N8329Y Piper
PA-30
Fixed-wing, multi-engine Harbock INC
Wilmington, Delaware
Standard 2020-02-07 ValidFAA registration status code V: Valid registration. All codes
N8254Y Piper
PA-30
Fixed-wing, multi-engine Crimson Aviation LLC
Helena, Montana
Standard 2020-02-04 ValidFAA registration status code V: Valid registration. All codes
N88350 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2020-01-31 ValidFAA registration status code V: Valid registration. All codes
N7605Y Piper
PA-30
Fixed-wing, multi-engine Plane Care LLC
Tucson, Arizona
Standard 2020-01-28 ValidFAA registration status code V: Valid registration. All codes
N7081Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2020-01-27 ValidFAA registration status code V: Valid registration. All codes
N8204Y Piper
PA-30
Fixed-wing, multi-engine Blue Steele LLC
Barnegat, New Jersey
Standard 2020-01-08 ValidFAA registration status code V: Valid registration. All codes
N5064X Champion
7KCAB
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2020-01-03 ValidFAA registration status code V: Valid registration. All codes
N76YD Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Virginia
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N8783Y Piper
PA-30
Fixed-wing, multi-engine Osprey Holding Company LLC
Foley, Alabama
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N8980Y Piper
PA-39
Fixed-wing, multi-engine Tomu Fly LLC
Vero Beach, Florida
Standard 2019-12-06 ValidFAA registration status code V: Valid registration. All codes
N6303N Champion
7KCAB
Fixed-wing, single engine Individual owner
North Dakota
Multiple 2019-12-02 ValidFAA registration status code V: Valid registration. All codes
N9PA Amos
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
Ohio
Experimental 2019-11-18 ValidFAA registration status code V: Valid registration. All codes
N7980Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2019-11-15 ValidFAA registration status code V: Valid registration. All codes
N8976Y Piper
PA-39
Fixed-wing, multi-engine Africano Aircraft Management LLC DBA
Chicago, Illinois
Standard 2019-11-14 ValidFAA registration status code V: Valid registration. All codes
N7164Y Piper
PA-30
Fixed-wing, multi-engine Great Lakes Air Ventures LLC
Mason, Michigan
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N41807 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N437AB Piper
PA-30B-160
Fixed-wing, multi-engine International Air Services INC Trustee
Carson City, Nevada
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N320DK Olsen Daniel M
LANCAIR 320
Fixed-wing, single engine Individual owner
Colorado
Experimental 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N5195X Champion
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2019-09-14 ValidFAA registration status code V: Valid registration. All codes
N8771Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-09-13 ValidFAA registration status code V: Valid registration. All codes
N2YP Piper
PA-30
Fixed-wing, multi-engine Collum Aviation LLC
Milton, Florida
Standard 2019-09-12 ValidFAA registration status code V: Valid registration. All codes
N7166Y Piper
PA-30
Fixed-wing, multi-engine Collum Aviation LLC
Milton, Florida
Standard 2019-09-12 ValidFAA registration status code V: Valid registration. All codes
N79G Piper
PA-30
Fixed-wing, multi-engine Individual owner
South Dakota
Standard 2019-09-11 ValidFAA registration status code V: Valid registration. All codes
N954TP Pennell Tom A
DR-107
Fixed-wing, single engine Individual owner
Virginia
Experimental 2019-09-11 ValidFAA registration status code V: Valid registration. All codes
N86576 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-09-03 ValidFAA registration status code V: Valid registration. All codes
N88395 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-08-16 ValidFAA registration status code V: Valid registration. All codes
N18999 Piper
J3C-65
Fixed-wing, single engine Cub Air LLC
Barrington, Illinois
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N388LB Piper
PA-30
Fixed-wing, multi-engine Sdgair LLC
Port Orange, Florida
Standard 2019-07-24 ValidFAA registration status code V: Valid registration. All codes
N7778Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Multiple 2019-07-18 ValidFAA registration status code V: Valid registration. All codes
N5282X Champion
7KCAB
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-07-16 ValidFAA registration status code V: Valid registration. All codes
N8019Y Piper
PA-30
Fixed-wing, multi-engine Optimus Aicraft Leasing LLC
Naples, Florida
Standard 2019-07-15 ValidFAA registration status code V: Valid registration. All codes
N8418Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-07-09 ValidFAA registration status code V: Valid registration. All codes
N8486Z Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Ohio
Standard 2019-07-01 ValidFAA registration status code V: Valid registration. All codes
N43WJ Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Colorado
Standard 2019-06-25 ValidFAA registration status code V: Valid registration. All codes
N8368Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-06-25 ValidFAA registration status code V: Valid registration. All codes
N8219Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N74YC Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N7901Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2019-06-14 ValidFAA registration status code V: Valid registration. All codes
N7481D Piper
PA-18A
Fixed-wing, single engine
Multiple 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N45JL Piper
PA-39
Fixed-wing, multi-engine Bows Investments LLC
Bend, Oregon
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N7418Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N12FS Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Montana
Standard 2019-05-31 ValidFAA registration status code V: Valid registration. All codes
N57678 Bellanca
7KCAB
Fixed-wing, single engine Flight School INC
Spring, Texas
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N8507Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Multiple 2019-05-15 ValidFAA registration status code V: Valid registration. All codes
N8506Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Delaware
Standard 2019-05-09 ValidFAA registration status code V: Valid registration. All codes
N11706 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
California
Restricted 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N597L Piper
PA-30
Fixed-wing, multi-engine Individual owner
Minnesota
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N1850G Champion
7KCAB
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N57664 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N8981Y Piper
PA-39
Fixed-wing, multi-engine Grey Enterprises Holdings LLC
Kalispell, Montana
Standard 2019-04-19 ValidFAA registration status code V: Valid registration. All codes
N333SN Piper
PA-30
Fixed-wing, multi-engine Hub City Aviation Academy LLC
Lubbock, Texas
Standard 2019-04-18 ValidFAA registration status code V: Valid registration. All codes
N1871G Champion
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N12206 Bellanca
7KCAB
Fixed-wing, single engine Hth LLC
Merigold, Mississippi
Standard 2019-04-02 ValidFAA registration status code V: Valid registration. All codes
N11677 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Texas
Restricted 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N11PY Piper
PA-30
Fixed-wing, multi-engine Individual owner
Colorado
Standard 2019-03-30 ValidFAA registration status code V: Valid registration. All codes
N2468H Piper
PA-18-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2019-03-29 ValidFAA registration status code V: Valid registration. All codes
N8895Y Piper
PA-39
Fixed-wing, multi-engine Withheld at owner's request
Standard 2019-03-25 ValidFAA registration status code V: Valid registration. All codes
N8982Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2019-03-23 ValidFAA registration status code V: Valid registration. All codes
N7632Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Massachusetts
Standard 2019-03-16 ValidFAA registration status code V: Valid registration. All codes
N9VG Plocher Edward B
SHA-GLASAIR
Fixed-wing, single engine Oak Tree Title of Oklahoma LLC
Oklahoma City, Oklahoma
Experimental 2019-03-14 ValidFAA registration status code V: Valid registration. All codes
N8675Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2019-03-11 ValidFAA registration status code V: Valid registration. All codes
N729CB Brumfield Carvian K
FALCO F-8L
Fixed-wing, single engine Individual owner
Ohio
Experimental 2019-03-09 ValidFAA registration status code V: Valid registration. All codes
N718JR Piper
PA-30
Fixed-wing, multi-engine Flytwincos LLC
Las Vegas, Nevada
Standard 2019-03-08 ValidFAA registration status code V: Valid registration. All codes
N7671Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2019-03-06 ValidFAA registration status code V: Valid registration. All codes
N68X Piper
PA-30
Fixed-wing, multi-engine Lsk Aviation CORP
Wilmington, Delaware
Standard 2019-03-05 ValidFAA registration status code V: Valid registration. All codes
N7818Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2019-03-04 ValidFAA registration status code V: Valid registration. All codes
N8955Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2019-03-02 ValidFAA registration status code V: Valid registration. All codes
N614JD Piper
PA-30
Fixed-wing, multi-engine Cc Aviation INC
Tracy, California
Standard 2019-02-25 ValidFAA registration status code V: Valid registration. All codes
N777KG Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Montana
Standard 2019-02-25 ValidFAA registration status code V: Valid registration. All codes
N9083L Champion
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2019-02-22 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.