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
N36013 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2006-05-04 ValidFAA registration status code V: Valid registration. All codes
N64918 Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2006-05-04 ValidFAA registration status code V: Valid registration. All codes
N8917Y Piper
PA-39
Fixed-wing, multi-engine High Flyers INC
Jackson, Tennessee
Standard 2006-04-19 ValidFAA registration status code V: Valid registration. All codes
N7365Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2006-04-07 ValidFAA registration status code V: Valid registration. All codes
N8539Y Piper
PA-30
Fixed-wing, multi-engine Twinco Leasing LLC
Yacolt, Washington
Standard 2006-04-04 ValidFAA registration status code V: Valid registration. All codes
N18LM Mcdaniel Lee T
RV-4
Fixed-wing, single engine Individual owner
Washington
Experimental 2006-03-15 ValidFAA registration status code V: Valid registration. All codes
N7928Y Piper
PA-30
Fixed-wing, multi-engine W Carney LLC
Ocala, Florida
Standard 2006-03-06 ValidFAA registration status code V: Valid registration. All codes
N678BT Macmurchy'S Gordon Stuart
RV6A
Fixed-wing, single engine Individual owner
Colorado
Experimental 2006-02-01 ValidFAA registration status code V: Valid registration. All codes
N9722B Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2006-01-19 ValidFAA registration status code V: Valid registration. All codes
N57657 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Arkansas
Standard 2006-01-09 ValidFAA registration status code V: Valid registration. All codes
N57515 Bellanca
7KCAB
Fixed-wing, single engine Peterson Dean
Gothenburg, Nebraska
Standard 2006-01-06 ValidFAA registration status code V: Valid registration. All codes
N156LM Piper
PA-30
Fixed-wing, multi-engine Loup Technologies INC
Longmont, Colorado
Standard 2005-12-22 ValidFAA registration status code V: Valid registration. All codes
N68574 Bellanca
8KCAB
Fixed-wing, single engine All Attitude Aviation INC
Edgewater, Florida
Standard 2005-12-19 ValidFAA registration status code V: Valid registration. All codes
N772SF Burholm Per B L
FALCO F 8L
Fixed-wing, single engine Academy Aeronautique LLC
Mission Viejo, California
Experimental 2005-12-12 ValidFAA registration status code V: Valid registration. All codes
N86588 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2005-11-10 ValidFAA registration status code V: Valid registration. All codes
N7449Y Piper
PA-30
Fixed-wing, multi-engine Middle Georgia Aviation INC
Cochran, Georgia
Standard 2005-11-08 ValidFAA registration status code V: Valid registration. All codes
N7054Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2005-11-01 ValidFAA registration status code V: Valid registration. All codes
N91FN Scheck Christopher R
VANS RV-9A
Fixed-wing, single engine Individual owner
Oregon
Experimental 2005-10-18 ValidFAA registration status code V: Valid registration. All codes
N625BC Bellanca
7KCAB
Fixed-wing, single engine Individual owner
South Dakota
Standard 2005-08-25 ValidFAA registration status code V: Valid registration. All codes
N7012Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2005-08-17 ValidFAA registration status code V: Valid registration. All codes
N57473 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2005-08-16 ValidFAA registration status code V: Valid registration. All codes
N5187T Champion
7KCAB
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2005-08-11 ValidFAA registration status code V: Valid registration. All codes
N4900U Piper
PA-28-161
Fixed-wing, single engine Board of Regents of the University of Oklahoma
Norman, Oklahoma
Standard 2005-08-08 ValidFAA registration status code V: Valid registration. All codes
N7565Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Kansas
Standard 2005-07-20 ValidFAA registration status code V: Valid registration. All codes
N230SW Piper
PA-39
Fixed-wing, multi-engine Martin CO
Tyrone, Georgia
Standard 2005-07-12 ValidFAA registration status code V: Valid registration. All codes
N24TE Piper
PA-39
Fixed-wing, multi-engine Individual owner
Maryland
Standard 2005-06-01 ValidFAA registration status code V: Valid registration. All codes
N76382 Bellanca
7KCAB
Fixed-wing, single engine Withheld at owner's request
Standard 2005-03-22 ValidFAA registration status code V: Valid registration. All codes
N694RS Snarr Randy L
LANCAIR 235/320
Fixed-wing, single engine Individual owner
Utah
Experimental 2005-03-08 ValidFAA registration status code V: Valid registration. All codes
N11681 Bellanca
7KCAB
Fixed-wing, single engine Amelia Reid Aviation LLC
San Jose, California
Standard 2005-02-15 ValidFAA registration status code V: Valid registration. All codes
N88353 Bellanca
7KCAB
Fixed-wing, single engine Amelia Reid Aviation LLC
San Jose, California
Standard 2005-02-15 ValidFAA registration status code V: Valid registration. All codes
N7890Y Piper
PA-30
Fixed-wing, multi-engine Mhr Leasing LLC
Hickory Corners, Michigan
Standard 2005-01-24 ValidFAA registration status code V: Valid registration. All codes
N31294 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2005-01-12 ValidFAA registration status code V: Valid registration. All codes
N9589S Champion
7GCAA
Fixed-wing, single engine Individual owner
Florida
Multiple 2005-01-04 ValidFAA registration status code V: Valid registration. All codes
N161RE Piper
PA-30
Fixed-wing, multi-engine Individual owner
Ohio
Standard 2004-12-16 ValidFAA registration status code V: Valid registration. All codes
N3YB Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Nevada
Standard 2004-11-10 ValidFAA registration status code V: Valid registration. All codes
N869TT Champion
7KCAB
Fixed-wing, single engine Individual owner
Michigan
Restricted 2004-11-02 ValidFAA registration status code V: Valid registration. All codes
N57390 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Kansas
Standard 2004-09-23 ValidFAA registration status code V: Valid registration. All codes
N7183K Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2004-09-20 ValidFAA registration status code V: Valid registration. All codes
N7023Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2004-08-31 ValidFAA registration status code V: Valid registration. All codes
N8717V Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
North Carolina
Multiple 2004-08-30 ValidFAA registration status code V: Valid registration. All codes
N851S Asbe Kenneth E
RV-6
Fixed-wing, single engine Individual owner
Iowa
Experimental 2004-08-27 ValidFAA registration status code V: Valid registration. All codes
N415HP Piper
PA-30
Fixed-wing, multi-engine Individual owner
Nebraska
Standard 2004-08-09 ValidFAA registration status code V: Valid registration. All codes
N24WL Lawson
THORP T-18
Fixed-wing, single engine Individual owner
California
Experimental 2004-06-30 ValidFAA registration status code V: Valid registration. All codes
N7865Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2004-05-20 ValidFAA registration status code V: Valid registration. All codes
N8686Y Piper
PA-30
Fixed-wing, multi-engine Advanced Aviation LLC
Midlothian, Virginia
Standard 2004-05-19 ValidFAA registration status code V: Valid registration. All codes
N8187Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2004-05-06 ValidFAA registration status code V: Valid registration. All codes
N614R Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Standard 2004-04-26 ValidFAA registration status code V: Valid registration. All codes
N7261Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2004-03-30 ValidFAA registration status code V: Valid registration. All codes
N7674Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
California
Standard 2004-03-08 ValidFAA registration status code V: Valid registration. All codes
N306AK Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Florida
Standard 2004-02-19 ValidFAA registration status code V: Valid registration. All codes
N8688Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2004-02-12 ValidFAA registration status code V: Valid registration. All codes
N128LB Piper
PA-30
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2004-02-11 ValidFAA registration status code V: Valid registration. All codes
N5500C Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Mississippi
Standard 2004-02-10 ValidFAA registration status code V: Valid registration. All codes
N7183E Foote James Innes Jr
RV-4
Fixed-wing, single engine Individual owner
Connecticut
Experimental 2004-02-06 ValidFAA registration status code V: Valid registration. All codes
N24TJ Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Connecticut
Standard 2004-01-26 ValidFAA registration status code V: Valid registration. All codes
N556KR Whitaker Robert M
VANS ACFT RV-9A
Fixed-wing, single engine Individual owner
Utah
Experimental 2004-01-08 ValidFAA registration status code V: Valid registration. All codes
N661CC Andros Chris
GLASAIR
Fixed-wing, single engine Individual owner
Illinois
Experimental 2003-12-01 ValidFAA registration status code V: Valid registration. All codes
N7949Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Dakota
Standard 2003-11-08 ValidFAA registration status code V: Valid registration. All codes
N9MG Gaciala Michael
LANCAIR 320
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2003-10-29 ValidFAA registration status code V: Valid registration. All codes
N6393N Champion
7KCAB
Fixed-wing, single engine Culpeper Aviation LLC
Queen Creek, Arizona
Restricted 2003-10-23 ValidFAA registration status code V: Valid registration. All codes
N107GB Barrett George B
FALCO F8L
Fixed-wing, single engine Individual owner
California
Experimental 2003-10-06 ValidFAA registration status code V: Valid registration. All codes
N23BB Bell Bruce B
VANS RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2003-09-19 ValidFAA registration status code V: Valid registration. All codes
N8406Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2003-09-04 ValidFAA registration status code V: Valid registration. All codes
N40MR Russell
CAPTAIN-1
Fixed-wing, single engine Individual owner
California
Experimental 2003-08-29 ValidFAA registration status code V: Valid registration. All codes
N8785 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Washington
Standard 2003-08-14 ValidFAA registration status code V: Valid registration. All codes
N8706Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Georgia
Standard 2003-08-07 ValidFAA registration status code V: Valid registration. All codes
N8094Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Michigan
Standard 2003-08-01 ValidFAA registration status code V: Valid registration. All codes
N52GM Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Florida
Standard 2003-07-16 ValidFAA registration status code V: Valid registration. All codes
N5928J Cessna
A150L
Fixed-wing, single engine Individual owner
California
Standard 2003-07-08 ValidFAA registration status code V: Valid registration. All codes
N1628H Piper
PA-28-161
Fixed-wing, single engine Warrior N1628H LLC
Huntsville, Alabama
Standard 2003-07-07 ValidFAA registration status code V: Valid registration. All codes
N7919Y Piper
PA-30
Fixed-wing, multi-engine Keller Paul W
Austin, Texas
Standard 2003-06-26 ValidFAA registration status code V: Valid registration. All codes
N246MW Piper
PA-30
Fixed-wing, multi-engine Individual owner
Missouri
Standard 2003-06-11 ValidFAA registration status code V: Valid registration. All codes
N7302Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2003-06-09 ValidFAA registration status code V: Valid registration. All codes
N8632Y Piper
PA-30
Fixed-wing, multi-engine Dream Flyers LLC
Cherry Hill, New Jersey
Standard 2003-03-27 ValidFAA registration status code V: Valid registration. All codes
N139SF Walker Gerald W
FALCO F.8L
Fixed-wing, single engine Individual owner
Nevada
Experimental 2002-12-16 ValidFAA registration status code V: Valid registration. All codes
N42879 Bartle/Neja/Boucher
MARQUART CHARGER MA5
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2002-11-12 ValidFAA registration status code V: Valid registration. All codes
N724RB Bourgeois J Rion
RV-4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2002-11-12 ValidFAA registration status code V: Valid registration. All codes
N86936 Bellanca
7KCAB
Fixed-wing, single engine Lewis Aviation INC
Wilmington, Delaware
Standard 2002-10-17 ValidFAA registration status code V: Valid registration. All codes
N211WB Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Montana
Standard 2002-09-11 ValidFAA registration status code V: Valid registration. All codes
N8383Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Indiana
Standard 2002-09-05 ValidFAA registration status code V: Valid registration. All codes
N7732Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2002-09-04 ValidFAA registration status code V: Valid registration. All codes
N7342Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2002-07-12 ValidFAA registration status code V: Valid registration. All codes
N7061Y Piper
PA-30
Fixed-wing, multi-engine Hoistad Flying Service INC
Forman, North Dakota
Standard 2002-07-11 ValidFAA registration status code V: Valid registration. All codes
N247AR Archer Ronald L
VANS RV-6
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2002-06-07 ValidFAA registration status code V: Valid registration. All codes
N8777Y Piper
PA-30
Fixed-wing, multi-engine Silver Ridge INC
Wilmington, Delaware
Standard 2002-06-05 ValidFAA registration status code V: Valid registration. All codes
N84GG Gruber Gerald F
GLASAIR RG
Fixed-wing, single engine Individual owner
Arizona
Experimental 2002-04-02 ValidFAA registration status code V: Valid registration. All codes
N8735V Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2002-03-20 ValidFAA registration status code V: Valid registration. All codes
N7628Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2002-01-18 ValidFAA registration status code V: Valid registration. All codes
N320S Sinclair W Robert
LANCAIR L-320
Fixed-wing, single engine Individual owner
California
Experimental 2001-11-27 ValidFAA registration status code V: Valid registration. All codes
N8702Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Texas
Standard 2001-10-31 ValidFAA registration status code V: Valid registration. All codes
N1951E Champion
7KCAB
Fixed-wing, single engine Individual owner
Indiana
Standard 2001-06-25 ValidFAA registration status code V: Valid registration. All codes
N7136Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Illinois
Standard 2001-06-06 ValidFAA registration status code V: Valid registration. All codes
N7386Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2001-02-14 ValidFAA registration status code V: Valid registration. All codes
N234PC Cessna
172P
Fixed-wing, single engine Individual owner
Kentucky
Standard 2001-02-12 ValidFAA registration status code V: Valid registration. All codes
N8934Y Piper
PA-39
Fixed-wing, multi-engine Individual owner
Nevada
Standard 2000-12-01 ValidFAA registration status code V: Valid registration. All codes
N57691 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Nebraska
Standard 2000-10-02 ValidFAA registration status code V: Valid registration. All codes
N7317Y Piper
PA-30
Fixed-wing, multi-engine Comanche Air Services LLC
Westminster, Colorado
Standard 2000-09-13 ValidFAA registration status code V: Valid registration. All codes
N41816 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2000-08-09 ValidFAA registration status code V: Valid registration. All codes
N49ES Spangler Emery E
GLASAIR SH 2
Fixed-wing, single engine Individual owner
Michigan
Experimental 2000-08-02 ValidFAA registration status code V: Valid registration. All codes
N4114 Pitts Special
S-1C
Fixed-wing, single engine Individual owner
Illinois
Experimental 2000-06-30 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.