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
N7773Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2021-07-14 ValidFAA registration status code V: Valid registration. All codes
N8302Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Louisiana
Standard 2021-06-30 ValidFAA registration status code V: Valid registration. All codes
N7686Y Piper
PA-30
Fixed-wing, multi-engine Montana Leasing Group LLC
Park City, Utah
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N666PL Bellanca
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N53903 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Virginia
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N203SC Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N113JW Wigmore John E
RV6
Fixed-wing, single engine Grass Roots Aviation LLC
Bend, Oregon
Experimental 2021-06-05 ValidFAA registration status code V: Valid registration. All codes
N7249Y Piper
PA-30
Fixed-wing, multi-engine Ct Capital LLC
Austin, Texas
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N61BB Piper
PA-30
Fixed-wing, multi-engine Aeronautical Technical Service INC
Collierville, Tennessee
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N7391Y Piper
PA-30
Fixed-wing, multi-engine Aeronautical Technical Service INC
Collierville, Tennessee
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N8348Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Nebraska
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N8898Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N8337Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Michigan
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N41PL Piper
PA-30
Fixed-wing, multi-engine Tj Air Holdings INC Trustee
Wilmington, Delaware
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N42TP Piper
PA-30
Fixed-wing, multi-engine Individual owner
Montana
Standard 2021-05-05 ValidFAA registration status code V: Valid registration. All codes
N321LM Starkey Mike/Starkey Laura
RANS S-21 OUTBOUND
Fixed-wing, single engine Co-owned owner
Nevada
Experimental 2021-05-04 ValidFAA registration status code V: Valid registration. All codes
N6916K Piper
PA-20
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-05-03 ValidFAA registration status code V: Valid registration. All codes
N90AV Bellanca
7KCAB
Fixed-wing, single engine Cag Aircraft Holdings LLC
Crystal River, Florida
Standard 2021-05-03 ValidFAA registration status code V: Valid registration. All codes
N8309Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2021-05-01 ValidFAA registration status code V: Valid registration. All codes
N9NY Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2021-04-29 ValidFAA registration status code V: Valid registration. All codes
N7068Y Piper
PA-30
Fixed-wing, multi-engine Advanced Aircrew Training LLC
Nashua, New Hampshire
Standard 2021-04-23 ValidFAA registration status code V: Valid registration. All codes
N9011L Champion
7KCAB
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N407AF Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N8944Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N98530 Cessna
172P
Fixed-wing, single engine Swan Aviation Ministries INC
Crestview, Florida
Standard 2021-04-10 ValidFAA registration status code V: Valid registration. All codes
N8378Y Piper
PA-30
Fixed-wing, multi-engine Emerald Aircraft LLC
Greenwood, South Carolina
Standard 2021-04-09 ValidFAA registration status code V: Valid registration. All codes
N7216Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N1WU Piper
PA-30
Fixed-wing, multi-engine N1Wu LLC
Loganville, Georgia
Standard 2021-04-05 ValidFAA registration status code V: Valid registration. All codes
N53975 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Iowa
Standard 2021-04-02 ValidFAA registration status code V: Valid registration. All codes
N96RD Driver Robert J
SH-2 R GLASAIR
Fixed-wing, single engine Co-owned owner
New Hampshire
Experimental 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N7441Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N8119Y Piper
PA-30
Fixed-wing, multi-engine Star H Aviation LLC
Plano, Texas
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N8731Y Piper
PA-30
Fixed-wing, multi-engine Go Tapa Aero LLC
Wilmington, Delaware
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N8226Y Piper
PA-30
Fixed-wing, multi-engine C P L Air LLC
Middletown, Delaware
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N64686 Cessna
172P
Fixed-wing, single engine Kadena Aero Club
Apo, AP
Standard 2021-03-03 ValidFAA registration status code V: Valid registration. All codes
N8421Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2021-02-20 ValidFAA registration status code V: Valid registration. All codes
N6HB Buttles Harold
GLASAIR II FT
Fixed-wing, single engine Individual owner
California
Experimental 2021-02-17 ValidFAA registration status code V: Valid registration. All codes
N8430Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Illinois
Standard 2021-02-13 ValidFAA registration status code V: Valid registration. All codes
N501BA Bellanca
7KCAB
Fixed-wing, single engine Falcon Air LLC
Orlando, Florida
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N178E Piper
PA-30
Fixed-wing, multi-engine Gagan Samrat LLC
Charlotte, North Carolina
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N5139X Champion
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N88309 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N8SF Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2021-01-20 ValidFAA registration status code V: Valid registration. All codes
N1631G Champion
7KCAB
Fixed-wing, single engine Co-owned owner
Tennessee
Restricted 2021-01-14 ValidFAA registration status code V: Valid registration. All codes
N3216 Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2021-01-13 ValidFAA registration status code V: Valid registration. All codes
N936MB Cessna
172N
Fixed-wing, single engine Bergstrom Aircraft INC
Pasco, Washington
Multiple 2021-01-12 ValidFAA registration status code V: Valid registration. All codes
N28MV Robinson Michael E
VANS RV9A
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N339W Whiteman Marvin E
W-3
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N7455Y Piper
PA-30
Fixed-wing, multi-engine Towns Bobby
Nashville, Tennessee
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N79081 Cessna
172K
Fixed-wing, single engine Individual owner
New York
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N2654E Piper
PA-39
Fixed-wing, multi-engine Sch Aviation INC Trustee
Sporle Kings Lynn,
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N7862Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N388DM Werner David & Marlene
GLASAIR RG
Fixed-wing, single engine Glasair One LLC
Brighton, Colorado
Experimental 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N240LH Piper
PA-30
Fixed-wing, multi-engine Individual owner
Oklahoma
Standard 2020-12-10 ValidFAA registration status code V: Valid registration. All codes
N727RH Henry Richard M Iii
BUSHBY MUSTANG II
Fixed-wing, single engine Withheld at owner's request
Experimental 2020-12-05 ValidFAA registration status code V: Valid registration. All codes
N57SP Prest
STEEN SKYBOLT
Fixed-wing, single engine Individual owner
Mississippi
Experimental 2020-12-04 ValidFAA registration status code V: Valid registration. All codes
N751WW Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-12-02 ValidFAA registration status code V: Valid registration. All codes
N8833Y Piper
PA-30
Fixed-wing, multi-engine Gagan Samrat LLC
Charlotte, North Carolina
Standard 2020-11-24 ValidFAA registration status code V: Valid registration. All codes
N71AD Piper
PA-30
Fixed-wing, multi-engine Sons Aviation LLC
Moody, Alabama
Standard 2020-11-21 ValidFAA registration status code V: Valid registration. All codes
N7186Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N8747V Bellanca
7KCAB
Fixed-wing, single engine Gerald Z Morse INC
Kalispell, Montana
Standard 2020-11-09 ValidFAA registration status code V: Valid registration. All codes
N301JS Saar Jerry C
SH2
Fixed-wing, single engine Individual owner
Iowa
Experimental 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N217HC Piper
PA-30
Fixed-wing, multi-engine Individual owner
Kansas
Standard 2020-10-24 ValidFAA registration status code V: Valid registration. All codes
N11MF Bellanca
8KCAB
Fixed-wing, single engine Croom Aviation LLC
Port Saint Joe, Florida
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N747DJ Eigenbau/Construc
GLASAIR RG
Fixed-wing, single engine Individual owner
California
Experimental 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N8216Y Piper
PA-30
Fixed-wing, multi-engine Media Stew LLC
Carson City, Nevada
Standard 2020-10-08 ValidFAA registration status code V: Valid registration. All codes
N43B Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2020-10-07 ValidFAA registration status code V: Valid registration. All codes
N837PG Piper
PA-30
Fixed-wing, multi-engine G & G Comanche LLC
Magnolia Springs, Alabama
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N7706Y Piper
PA-30
Fixed-wing, multi-engine Highway Whisperer LLC
Wilmington, Delaware
Standard 2020-10-02 ValidFAA registration status code V: Valid registration. All codes
N126MA Piper
PA-30
Fixed-wing, multi-engine Individual owner
Minnesota
Standard 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N90WC Carter William T
SIDEWINDER
Fixed-wing, single engine Highway Whisperer LLC
Wilmington, Delaware
Experimental 2020-09-29 ValidFAA registration status code V: Valid registration. All codes
N11679 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Maryland
Standard 2020-09-11 ValidFAA registration status code V: Valid registration. All codes
N980GC Piper
PA-39
Fixed-wing, multi-engine Air Kraft Spraying INC
Timber Lake, South Dakota
Standard 2020-09-08 ValidFAA registration status code V: Valid registration. All codes
N222XP Marshall Greg J
PANTHER LS
Fixed-wing, single engine Individual owner
Virginia
Experimental 2020-08-31 ValidFAA registration status code V: Valid registration. All codes
N16TW Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2020-08-28 ValidFAA registration status code V: Valid registration. All codes
N90LT Troutman Leonard
LONG EZ
Fixed-wing, single engine Individual owner
Oregon
Experimental 2020-08-28 ValidFAA registration status code V: Valid registration. All codes
N8359Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-08-22 ValidFAA registration status code V: Valid registration. All codes
N901KS Cessna
172P
Fixed-wing, single engine Mbk Leasing and Consulting LLC
Lakeland, Florida
Standard 2020-08-22 ValidFAA registration status code V: Valid registration. All codes
N36178 Bellanca
7KCAB
Fixed-wing, single engine California Flyers Training Solutions LLC
Sun City, California
Standard 2020-08-21 ValidFAA registration status code V: Valid registration. All codes
N3088G Piper
PA-30
Fixed-wing, multi-engine Rox Air LLC
Montgomery, Ohio
Standard 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N373S Masengil Benjamin T
LANCAIR 320
Fixed-wing, single engine Individual owner
New York
Experimental 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N919DB Bailie David A
S-16 SHEKARI
Fixed-wing, single engine Individual owner
Kansas
Experimental 2020-08-12 ValidFAA registration status code V: Valid registration. All codes
N50MR Ludtke Edward
VANS RV-6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-08-08 ValidFAA registration status code V: Valid registration. All codes
N8624Y Piper
PA-30
Fixed-wing, multi-engine Withheld at owner's request
Standard 2020-07-30 ValidFAA registration status code V: Valid registration. All codes
N88303 Bellanca
7KCAB
Fixed-wing, single engine Airplanes LLC
Springfield, Oregon
Standard 2020-07-30 ValidFAA registration status code V: Valid registration. All codes
N320RP Peters Rexford G.
SH1
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2020-07-22 ValidFAA registration status code V: Valid registration. All codes
N932X Woodward Chris
RANS S-16
Fixed-wing, single engine Individual owner
Colorado
Experimental 2020-07-22 ValidFAA registration status code V: Valid registration. All codes
N30SH Piper
PA-30
Fixed-wing, multi-engine Medic Choppers LLC
Springdale, Arkansas
Standard 2020-07-20 ValidFAA registration status code V: Valid registration. All codes
N45JP Pinkerton
PITTS SPECIAL S-1
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2020-07-16 ValidFAA registration status code V: Valid registration. All codes
N8441A Piper
PA-30
Fixed-wing, multi-engine Aerolease LLC
Wilmington, Delaware
Standard 2020-07-08 ValidFAA registration status code V: Valid registration. All codes
N90998 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Illinois
Multiple 2020-07-07 ValidFAA registration status code V: Valid registration. All codes
N800K Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2020-07-01 ValidFAA registration status code V: Valid registration. All codes
N88078 Bellanca
7KCAB
Fixed-wing, single engine Khm Investments INC
Lehi, Utah
Standard 2020-06-22 ValidFAA registration status code V: Valid registration. All codes
N2268Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Wisconsin
Standard 2020-06-18 ValidFAA registration status code V: Valid registration. All codes
N2995G Champion
7KCAB
Fixed-wing, single engine Individual owner
Maine
Standard 2020-06-08 ValidFAA registration status code V: Valid registration. All codes
N1840G Champion
7KCAB
Fixed-wing, single engine Co-owned owner
Texas
Standard 2020-06-04 ValidFAA registration status code V: Valid registration. All codes
N111NR Rollingson Norman H
LANCAIR 320
Fixed-wing, single engine Individual owner
Florida
Experimental 2020-06-01 ValidFAA registration status code V: Valid registration. All codes
N8264Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Alabama
Standard 2020-06-01 ValidFAA registration status code V: Valid registration. All codes
N28DL Lott Donald
RV-6
Fixed-wing, single engine Co-owned owner
Wisconsin
Experimental 2020-05-21 ValidFAA registration status code V: Valid registration. All codes
N8884Y Piper
PA-39
Fixed-wing, multi-engine Flight Logistics LLC
Westerville, Ohio
Standard 2020-05-18 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.