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
N142E Piper
PA-30
Fixed-wing, multi-engine N142E LLC
Page, Arizona
Standard 2011-05-02 ValidFAA registration status code V: Valid registration. All codes
N88278 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2011-04-20 ValidFAA registration status code V: Valid registration. All codes
N8PM Bellanca
8KCAB
Fixed-wing, single engine Individual owner
California
Standard 2011-03-17 ValidFAA registration status code V: Valid registration. All codes
N7895S Bellanca
7KCAB
Fixed-wing, single engine Ocean Aerial Ads INC
Berlin, Maryland
Standard 2011-03-09 ValidFAA registration status code V: Valid registration. All codes
N5129X Champion
7KCAB
Fixed-wing, single engine Small Aviation No 2 LLC
Villa Rica, Georgia
Multiple 2011-01-31 ValidFAA registration status code V: Valid registration. All codes
N471K Johnson Kenneth W
HATZ CB-1
Fixed-wing, single engine Co-owned owner
Indiana
Experimental 2011-01-25 ValidFAA registration status code V: Valid registration. All codes
N7774Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2011-01-06 ValidFAA registration status code V: Valid registration. All codes
N94YC Piper
PA-30
Fixed-wing, multi-engine Individual owner
Iowa
Standard 2011-01-06 ValidFAA registration status code V: Valid registration. All codes
N7101Y Piper
PA-30
Fixed-wing, multi-engine N7101Y LLC
Wilmington, Delaware
Standard 2010-12-01 ValidFAA registration status code V: Valid registration. All codes
N261RM Martin J R / Olandese D J
RV-9
Fixed-wing, single engine Olandese Donald J
Newalla, Oklahoma
Experimental 2010-11-09 ValidFAA registration status code V: Valid registration. All codes
N288RT Champion
7KCAB
Fixed-wing, single engine Savonen Stephen D
Ukiah, California
Standard 2010-10-08 ValidFAA registration status code V: Valid registration. All codes
N320GC Piper
PA-39
Fixed-wing, multi-engine Co-owned owner
California
Standard 2010-10-08 ValidFAA registration status code V: Valid registration. All codes
N777KP Piper
PA-30
Fixed-wing, multi-engine Kelly'S Flying Service LLC
Warrensburg, Missouri
Standard 2010-09-30 ValidFAA registration status code V: Valid registration. All codes
N389RV Todd Darrell
VANS AIRCRAFT RV9A
Fixed-wing, single engine Rv Niners LLC
Etna, Ohio
Experimental 2010-07-23 ValidFAA registration status code V: Valid registration. All codes
N53877 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Alaska
Standard 2010-06-24 ValidFAA registration status code V: Valid registration. All codes
N86820 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2010-06-11 ValidFAA registration status code V: Valid registration. All codes
N178U Piper
PA-30
Fixed-wing, multi-engine Individual owner
Delaware
Restricted 2010-04-23 ValidFAA registration status code V: Valid registration. All codes
N7000Y Piper
PA-30
Fixed-wing, multi-engine Slowpoke Air LLC
Palm Harbor, Florida
Standard 2010-04-06 ValidFAA registration status code V: Valid registration. All codes
N2614G Champion
7KCAB
Fixed-wing, single engine Northern Air INC
Bonners Ferry, Idaho
Standard 2010-03-17 ValidFAA registration status code V: Valid registration. All codes
N7940Y Piper
PA-30
Fixed-wing, multi-engine N7940Y LLC
Eagle Harbor, Michigan
Standard 2010-02-18 ValidFAA registration status code V: Valid registration. All codes
N8538Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2010-01-26 ValidFAA registration status code V: Valid registration. All codes
N3829T Piper
PA-28R-180
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2009-12-08 ValidFAA registration status code V: Valid registration. All codes
N8381Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Minnesota
Standard 2009-12-03 ValidFAA registration status code V: Valid registration. All codes
N833DF Piper
PA-30
Fixed-wing, multi-engine Airdorrin INC
New Castle, Delaware
Standard 2009-09-22 ValidFAA registration status code V: Valid registration. All codes
N8629Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2009-09-04 ValidFAA registration status code V: Valid registration. All codes
N26SG Gano & Stewart
MUSTANG II
Fixed-wing, single engine Individual owner
Florida
Experimental 2009-07-22 ValidFAA registration status code V: Valid registration. All codes
N558MB Barrow Michael
RV-6A
Fixed-wing, single engine Individual owner
Nevada
Experimental 2009-07-09 ValidFAA registration status code V: Valid registration. All codes
N85MB Bradley M/Bradley M
STARDUSTER
Fixed-wing, single engine Co-owned owner
Missouri
Experimental 2009-07-08 ValidFAA registration status code V: Valid registration. All codes
N8399Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Indiana
Standard 2009-07-02 ValidFAA registration status code V: Valid registration. All codes
N7809S Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Georgia
Standard 2009-06-12 ValidFAA registration status code V: Valid registration. All codes
N7323Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Missouri
Standard 2009-06-02 ValidFAA registration status code V: Valid registration. All codes
N360PB Belleville M/Pothier G
LANCAIR 360
Fixed-wing, single engine Individual owner
Florida
Experimental 2009-05-11 ValidFAA registration status code V: Valid registration. All codes
N11870 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Texas
Standard 2009-04-16 ValidFAA registration status code V: Valid registration. All codes
N86890 Bellanca
7KCAB
Fixed-wing, single engine E-Commerce Education Foundation
Tulsa, Oklahoma
Standard 2009-04-01 ValidFAA registration status code V: Valid registration. All codes
N626FF Knapp Robert H
RV4
Fixed-wing, single engine Individual owner
Florida
Experimental 2009-03-05 ValidFAA registration status code V: Valid registration. All codes
N2VQ Piper
PA-30
Fixed-wing, multi-engine N2Vq LLC
Manassas, Virginia
Standard 2009-02-13 ValidFAA registration status code V: Valid registration. All codes
N8668Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Multiple 2009-02-11 ValidFAA registration status code V: Valid registration. All codes
N59DT Tyler David E
GLASTAR
Fixed-wing, single engine N59Dt INC
Malabar, Florida
Experimental 2009-01-12 ValidFAA registration status code V: Valid registration. All codes
N7573Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2009-01-12 ValidFAA registration status code V: Valid registration. All codes
N87618 Monocoupe
90AL-115
Fixed-wing, single engine Ready Aim Flyer LLC
New Castle, Delaware
Standard 2008-12-18 ValidFAA registration status code V: Valid registration. All codes
N5502A Bellanca
8KCAB
Fixed-wing, single engine Aero Enterprises LLC
Orange, Virginia
Standard 2008-12-02 ValidFAA registration status code V: Valid registration. All codes
N8315Y Piper
PA-30
Fixed-wing, multi-engine Golden Compass Aviation LLC
Wilmington, Delaware
Standard 2008-12-01 ValidFAA registration status code V: Valid registration. All codes
N1593R Reichenbach Richard R
FALCO F.8L
Fixed-wing, single engine Individual owner
Michigan
Experimental 2008-10-14 ValidFAA registration status code V: Valid registration. All codes
N8615Y Piper
PA-30
Fixed-wing, multi-engine University of Alaska Anchorage
Anchorage, Alaska
Standard 2008-08-20 ValidFAA registration status code V: Valid registration. All codes
N89SB Bauer Fred Jr/Bec Inc
THORP T-18
Fixed-wing, single engine Individual owner
Kansas
Experimental 2008-08-08 ValidFAA registration status code V: Valid registration. All codes
N282P Piper
PA-30
Fixed-wing, multi-engine Individual owner
Rhode Island
Standard 2008-08-04 ValidFAA registration status code V: Valid registration. All codes
N7614S Bellanca
7KCAB
Fixed-wing, single engine Natural Pleasure LLC
Fayetteville, North Carolina
Standard 2008-07-01 ValidFAA registration status code V: Valid registration. All codes
N103MH Call One Inc
ERACER
Fixed-wing, single engine Call One INC
Clarinda, Iowa
Experimental 2008-06-19 ValidFAA registration status code V: Valid registration. All codes
N7089Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2008-06-19 ValidFAA registration status code V: Valid registration. All codes
N64882 Cessna
172P
Fixed-wing, single engine Blue Sky Flyers INC
Greeley, Colorado
Standard 2008-06-17 ValidFAA registration status code V: Valid registration. All codes
N64875 Cessna
172P
Fixed-wing, single engine Air America Flight Center LLC
Daytona Beach, Florida
Standard 2008-05-07 ValidFAA registration status code V: Valid registration. All codes
N644W Wing
D-1
Fixed-wing, multi-engine Individual owner
Texas
Standard 2008-04-24 ValidFAA registration status code V: Valid registration. All codes
N7750Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Alabama
Standard 2008-04-14 ValidFAA registration status code V: Valid registration. All codes
N7180Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Maryland
Standard 2008-02-20 ValidFAA registration status code V: Valid registration. All codes
N7246Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2008-02-13 ValidFAA registration status code V: Valid registration. All codes
N8877Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2008-01-29 ValidFAA registration status code V: Valid registration. All codes
N7863Y Piper
PA-30
Fixed-wing, multi-engine Slipshod Aviation LLC
Hurricane, Utah
Standard 2008-01-22 ValidFAA registration status code V: Valid registration. All codes
N70RV Shiner Burton S Jr
RV-4
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2008-01-08 ValidFAA registration status code V: Valid registration. All codes
N7476Y Piper
PA-30
Fixed-wing, multi-engine William L Stewart Code Supplies INC
Rossville, Tennessee
Standard 2007-12-19 ValidFAA registration status code V: Valid registration. All codes
N7883Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2007-12-19 ValidFAA registration status code V: Valid registration. All codes
N8914Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2007-12-14 ValidFAA registration status code V: Valid registration. All codes
N5275X Champion
7KCAB
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2007-12-01 ValidFAA registration status code V: Valid registration. All codes
N4313P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2007-11-30 ValidFAA registration status code V: Valid registration. All codes
N7609Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Oklahoma
Standard 2007-11-30 ValidFAA registration status code V: Valid registration. All codes
N42PM Piper
PA-30
Fixed-wing, multi-engine Jofredo CORP
Zephyrhills, Florida
Standard 2007-11-19 ValidFAA registration status code V: Valid registration. All codes
N11707 Bellanca
8KCAB
Fixed-wing, single engine Catfish Express INC
Inverness, Mississippi
Standard 2007-11-05 ValidFAA registration status code V: Valid registration. All codes
N373 Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Standard 2007-10-29 ValidFAA registration status code V: Valid registration. All codes
N16AM Piper
PA-30
Fixed-wing, multi-engine Animal Health Supply INC
Vinita, Oklahoma
Standard 2007-10-18 ValidFAA registration status code V: Valid registration. All codes
N7858Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Ohio
Standard 2007-10-04 ValidFAA registration status code V: Valid registration. All codes
N1695G Champion
7KCAB
Fixed-wing, single engine Smith Winston R
Durham, North Carolina
Standard 2007-08-27 ValidFAA registration status code V: Valid registration. All codes
N888LC Piper
PA-30
Fixed-wing, multi-engine Individual owner
Indiana
Standard 2007-08-23 ValidFAA registration status code V: Valid registration. All codes
N7110Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
New Hampshire
Standard 2007-08-21 ValidFAA registration status code V: Valid registration. All codes
N56386 Mooney
M20J
Fixed-wing, single engine Airmooney LLC
Amherst, New York
Standard 2007-08-16 ValidFAA registration status code V: Valid registration. All codes
N655NP Porter Ivan A
I A PORTER MSTG M-II
Fixed-wing, single engine Individual owner
Illinois
Experimental 2007-08-16 ValidFAA registration status code V: Valid registration. All codes
N8092Y Piper
PA-30
Fixed-wing, multi-engine Stoks Gary R
Canby, Minnesota
Standard 2007-06-08 ValidFAA registration status code V: Valid registration. All codes
N7YM Piper
PA-30
Fixed-wing, multi-engine N7Ym LLC
Rockford, Michigan
Standard 2007-05-08 ValidFAA registration status code V: Valid registration. All codes
N7743Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Nebraska
Standard 2007-05-07 ValidFAA registration status code V: Valid registration. All codes
N13GL Linkis
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
Georgia
Experimental 2007-05-03 ValidFAA registration status code V: Valid registration. All codes
N8150Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Massachusetts
Standard 2007-05-01 ValidFAA registration status code V: Valid registration. All codes
N7279Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Standard 2007-03-21 ValidFAA registration status code V: Valid registration. All codes
N7B Burgoyne Ben
FALCO F8L
Fixed-wing, single engine Individual owner
Illinois
Experimental 2007-02-15 ValidFAA registration status code V: Valid registration. All codes
N7010Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Michigan
Standard 2007-02-02 ValidFAA registration status code V: Valid registration. All codes
N36176 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2007-01-25 ValidFAA registration status code V: Valid registration. All codes
N90912 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Kansas
Standard 2007-01-12 ValidFAA registration status code V: Valid registration. All codes
N53772 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
North Dakota
Standard 2007-01-04 ValidFAA registration status code V: Valid registration. All codes
N7954Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Ohio
Standard 2006-12-05 ValidFAA registration status code V: Valid registration. All codes
N8198Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Wisconsin
Standard 2006-11-20 ValidFAA registration status code V: Valid registration. All codes
N72AR Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Mississippi
Standard 2006-11-17 ValidFAA registration status code V: Valid registration. All codes
N645SD Piper
PA-30
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2006-11-06 ValidFAA registration status code V: Valid registration. All codes
N8012Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Connecticut
Standard 2006-10-24 ValidFAA registration status code V: Valid registration. All codes
N1858S Walton Ross
FOKKER DR 1 TRIPLANE
Fixed-wing, single engine C C Air CORP
Lancaster, California
Experimental 2006-09-27 ValidFAA registration status code V: Valid registration. All codes
N76SH Hall Steven C
RV6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2006-09-25 ValidFAA registration status code V: Valid registration. All codes
N9080L Champion
7KCAB
Fixed-wing, single engine Stewarts Aircraft Service INC
Waynesville, Ohio
Standard 2006-08-31 ValidFAA registration status code V: Valid registration. All codes
N7729Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2006-08-28 ValidFAA registration status code V: Valid registration. All codes
N8431Y Piper
PA-30
Fixed-wing, multi-engine N8431Y LLC
Coatesville, Indiana
Standard 2006-08-25 ValidFAA registration status code V: Valid registration. All codes
N88476 Bellanca
7KCAB
Fixed-wing, single engine Bmg Aviation INC
Bloomington, Indiana
Standard 2006-08-17 ValidFAA registration status code V: Valid registration. All codes
N1701H Bellanca
7KCAB
Fixed-wing, single engine Amelia Reid Aviation LLC
San Jose, California
Standard 2006-08-16 ValidFAA registration status code V: Valid registration. All codes
N57423 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Virginia
Standard 2006-08-16 ValidFAA registration status code V: Valid registration. All codes
N8030Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2006-06-28 ValidFAA registration status code V: Valid registration. All codes
N8689Y Piper
PA-30
Fixed-wing, multi-engine Blue Sky Aviators LLC
Winnebago, Illinois
Restricted 2006-06-02 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.