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
N393TB Piper
PA-30
Fixed-wing, multi-engine Tom Brown Consulting LLC
Ave Maria, Florida
Standard 2019-02-11 ValidFAA registration status code V: Valid registration. All codes
N7693Y Piper
PA-30
Fixed-wing, multi-engine Skywalker Flight School LLC
Adrian, Michigan
Standard 2019-02-11 ValidFAA registration status code V: Valid registration. All codes
N7114Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2019-01-23 ValidFAA registration status code V: Valid registration. All codes
N8542Y Piper
PA-30
Fixed-wing, multi-engine Aviation Training Solutions LLC
Hilo, Hawaii
Standard 2019-01-22 ValidFAA registration status code V: Valid registration. All codes
N198DG Gasper David M
RV6
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2019-01-10 ValidFAA registration status code V: Valid registration. All codes
N596RV Condrell Kenneth N
RV9A
Fixed-wing, single engine Eagle Eye Aero LLC
Carencro, Louisiana
Experimental 2019-01-07 ValidFAA registration status code V: Valid registration. All codes
N8026Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Louisiana
Standard 2019-01-02 ValidFAA registration status code V: Valid registration. All codes
N7435Y Piper
PA-30
Fixed-wing, multi-engine Stc Aviation LLC
Wilmington, Delaware
Standard 2018-12-21 ValidFAA registration status code V: Valid registration. All codes
N84JS Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Arizona
Standard 2018-12-15 ValidFAA registration status code V: Valid registration. All codes
N8780 Bellanca
7KCAB
Fixed-wing, single engine Gbm Aviation LLC
Los Altos, California
Standard 2018-12-12 ValidFAA registration status code V: Valid registration. All codes
N26RJ Piper
PA-30
Fixed-wing, multi-engine Roedel Road CO
Kewadin, Michigan
Standard 2018-12-11 ValidFAA registration status code V: Valid registration. All codes
N936R Piper
PA-30
Fixed-wing, multi-engine Individual owner
New York
Standard 2018-12-10 ValidFAA registration status code V: Valid registration. All codes
N88191 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Nevada
Standard 2018-12-04 ValidFAA registration status code V: Valid registration. All codes
N2XH Piper
PA-30
Fixed-wing, multi-engine Americas Best Amt INC
Goodyear, Arizona
Standard 2018-11-30 ValidFAA registration status code V: Valid registration. All codes
N5228X Champion
7KCAB
Fixed-wing, single engine Airbatic LLC
Huntsville, Alabama
Standard 2018-11-27 ValidFAA registration status code V: Valid registration. All codes
N75HD Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2018-11-13 ValidFAA registration status code V: Valid registration. All codes
N57405 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Oregon
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N11686 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2018-11-05 ValidFAA registration status code V: Valid registration. All codes
N8352Y Piper
PA-30
Fixed-wing, multi-engine Skylandsair LLC
Port Orange, Florida
Standard 2018-10-31 ValidFAA registration status code V: Valid registration. All codes
N8192Y Piper
PA-30
Fixed-wing, multi-engine Plane Fun INC Tr Trustee
Snellville, Georgia
Standard 2018-10-23 ValidFAA registration status code V: Valid registration. All codes
N7067Y Piper
PA-30
Fixed-wing, multi-engine Cactus Skybolt Aviation LLC
Athens, Alabama
Standard 2018-10-19 ValidFAA registration status code V: Valid registration. All codes
N87CT Brietigam Charles T "Chuck"
CHUCK'S RV-3C
Fixed-wing, single engine Individual owner
Colorado
Experimental 2018-10-16 ValidFAA registration status code V: Valid registration. All codes
N81XP Bennert Malcolm O
SIDEWINDER
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2018-09-26 ValidFAA registration status code V: Valid registration. All codes
N57660 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Kentucky
Standard 2018-09-24 ValidFAA registration status code V: Valid registration. All codes
N7028Y Piper
PA-30
Fixed-wing, multi-engine Aces High Aviation CORP
Pembroke Pines, Florida
Standard 2018-09-17 ValidFAA registration status code V: Valid registration. All codes
N7400Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Alabama
Standard 2018-09-12 ValidFAA registration status code V: Valid registration. All codes
N278JG Shriner John W
RV-6A
Fixed-wing, single engine Thompson Barrett R
Smyrna, Tennessee
Experimental 2018-09-11 ValidFAA registration status code V: Valid registration. All codes
N923SQ Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-09-11 ValidFAA registration status code V: Valid registration. All codes
N8099Y Piper
PA-30
Fixed-wing, multi-engine Ms Aero INC
Lakeville, Ohio
Standard 2018-09-05 ValidFAA registration status code V: Valid registration. All codes
N7519Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
New Mexico
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N312RB Barcelona Russell J
COZY IV
Fixed-wing, single engine Individual owner
New York
Experimental 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N580 Bellanca
8KCAB
Fixed-wing, single engine Aeroblayze Aviation LLC
Norman, Oklahoma
Standard 2018-08-23 ValidFAA registration status code V: Valid registration. All codes
N7260Y Piper
PA-30
Fixed-wing, multi-engine Deuce Aire LLC
Middletown, Delaware
Standard 2018-08-23 ValidFAA registration status code V: Valid registration. All codes
N4304G Kruse Richard A
GLASAIR I FT
Fixed-wing, single engine Individual owner
Indiana
Experimental 2018-08-21 ValidFAA registration status code V: Valid registration. All codes
N50924 Neico Aviation Inc
LANCAIR 320
Fixed-wing, single engine Individual owner
California
Experimental 2018-08-21 ValidFAA registration status code V: Valid registration. All codes
N7084Y Piper
PA-30
Fixed-wing, multi-engine Arkadelphia Aircraft Services INC
Jonesboro, Arkansas
Standard 2018-08-21 ValidFAA registration status code V: Valid registration. All codes
N6365N Champion
7KCAB
Fixed-wing, single engine South Dakota State University
Brookings, South Dakota
Standard 2018-08-03 ValidFAA registration status code V: Valid registration. All codes
N72DL Bellanca
8KCAB
Fixed-wing, single engine D Air LLC
The Colony, Texas
Standard 2018-08-02 ValidFAA registration status code V: Valid registration. All codes
N40WF Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2018-07-31 ValidFAA registration status code V: Valid registration. All codes
N1122A Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2018-07-25 ValidFAA registration status code V: Valid registration. All codes
N62979 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Kansas
Standard 2018-07-25 ValidFAA registration status code V: Valid registration. All codes
N8703Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Texas
Standard 2018-07-20 ValidFAA registration status code V: Valid registration. All codes
N22KA Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-07-18 ValidFAA registration status code V: Valid registration. All codes
N5153T Champion
7KCAB
Fixed-wing, single engine Individual owner
Nevada
Standard 2018-07-17 ValidFAA registration status code V: Valid registration. All codes
N6008X Piper
PA-30
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2018-07-09 ValidFAA registration status code V: Valid registration. All codes
N5WW Piper
PA-30
Fixed-wing, multi-engine Individual owner
Oregon
Standard 2018-06-27 ValidFAA registration status code V: Valid registration. All codes
N87025 Bellanca
7KCAB
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2018-06-25 ValidFAA registration status code V: Valid registration. All codes
N53737 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Florida
Standard 2018-06-20 ValidFAA registration status code V: Valid registration. All codes
N299LC Bellanca
8KCAB
Fixed-wing, single engine Flight Contract Services INC
Las Vegas, Nevada
Standard 2018-06-19 ValidFAA registration status code V: Valid registration. All codes
N46JE Cole Stanley T
RV-6
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-06-15 ValidFAA registration status code V: Valid registration. All codes
N7410Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2018-06-15 ValidFAA registration status code V: Valid registration. All codes
N8365Y Piper
PA-30
Fixed-wing, multi-engine Twin Time LLC
Battle Lake, Minnesota
Standard 2018-06-15 ValidFAA registration status code V: Valid registration. All codes
N242E Cessna
172M
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2018-06-13 ValidFAA registration status code V: Valid registration. All codes
N11680 Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2018-06-12 ValidFAA registration status code V: Valid registration. All codes
N566BS Piper
PA-39
Fixed-wing, multi-engine Sand Farm Management Services LLC
Adel, Iowa
Standard 2018-05-29 ValidFAA registration status code V: Valid registration. All codes
N8416Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Iowa
Standard 2018-05-15 ValidFAA registration status code V: Valid registration. All codes
N86977 Bellanca
7KCAB
Fixed-wing, single engine Ajs Aviation INC
Spring Hill, Florida
Standard 2018-05-10 ValidFAA registration status code V: Valid registration. All codes
N8250Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2018-05-07 ValidFAA registration status code V: Valid registration. All codes
N777RH Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Pennsylvania
Standard 2018-04-23 ValidFAA registration status code V: Valid registration. All codes
N77SX Snyder Dan
RANS S-16
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2018-04-20 ValidFAA registration status code V: Valid registration. All codes
N8753 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
California
Standard 2018-04-17 ValidFAA registration status code V: Valid registration. All codes
N436JE Butler Thomas W
VANS RV6-A
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2018-04-02 ValidFAA registration status code V: Valid registration. All codes
N11643 Bellanca
7KCAB
Fixed-wing, single engine Henderson George L
Fresno, California
Standard 2018-03-28 ValidFAA registration status code V: Valid registration. All codes
N8662Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2018-03-22 ValidFAA registration status code V: Valid registration. All codes
N129GH Hall George D
BUSHBY MUSTANG 1
Fixed-wing, single engine Woelbing Aviation LLC
Franksville, Wisconsin
Experimental 2018-03-14 ValidFAA registration status code V: Valid registration. All codes
N7199Y Piper
PA-30
Fixed-wing, multi-engine Four Way Aircraft LTD
Pensacola, Florida
Standard 2018-03-13 ValidFAA registration status code V: Valid registration. All codes
N114RS Piper
PA-30
Fixed-wing, multi-engine Individual owner
Massachusetts
Standard 2018-03-09 ValidFAA registration status code V: Valid registration. All codes
N4680J Corral Oscar L
1982 GLASAIR RG KIT
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-03-08 ValidFAA registration status code V: Valid registration. All codes
N8752Y Piper
PA-30
Fixed-wing, multi-engine Twin Engine Freedom LLC
Port Saint Lucie, Florida
Standard 2018-03-07 ValidFAA registration status code V: Valid registration. All codes
N79BA Piper
PA-30
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2018-03-05 ValidFAA registration status code V: Valid registration. All codes
N199DL Hofler Jobie Willard
F.8L FALCO
Fixed-wing, single engine Clue Vista LLC
San Juan Capo, California
Experimental 2018-02-14 ValidFAA registration status code V: Valid registration. All codes
N11646 Bellanca
7KCAB
Fixed-wing, single engine Individual owner
Tennessee
Standard 2018-02-12 ValidFAA registration status code V: Valid registration. All codes
N64754 Cessna
172P
Fixed-wing, single engine Aerofeather Aviation INC
Suffolk, Virginia
Restricted 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N7562Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Wyoming
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N33ZM Piper
PA-30
Fixed-wing, multi-engine Individual owner
Maryland
Standard 2018-02-01 ValidFAA registration status code V: Valid registration. All codes
N8221Y Piper
PA-30
Fixed-wing, multi-engine Bill Kennedy Aviation LLC
Stuart, Florida
Standard 2018-01-31 ValidFAA registration status code V: Valid registration. All codes
N894CD Sykes R D/Sykes C A
VANS RV-6
Fixed-wing, single engine Individual owner
Colorado
Experimental 2018-01-25 ValidFAA registration status code V: Valid registration. All codes
N1188Y Piper
PA-30
Fixed-wing, multi-engine Skylark Flight Training LLC
Panama City, Florida
Standard 2018-01-24 ValidFAA registration status code V: Valid registration. All codes
N729AC Kleptz Charles F
GLASAIR SH 2R
Fixed-wing, single engine Individual owner
Ohio
Experimental 2018-01-23 ValidFAA registration status code V: Valid registration. All codes
N8526Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Florida
Standard 2018-01-12 ValidFAA registration status code V: Valid registration. All codes
N8755Y Piper
PA-30
Fixed-wing, multi-engine Two Twins Aviation INC
Wilmington, Delaware
Standard 2018-01-09 ValidFAA registration status code V: Valid registration. All codes
N7126G Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Missouri
Standard 2018-01-08 ValidFAA registration status code V: Valid registration. All codes
N7313Y Piper
PA-30
Fixed-wing, multi-engine Pr Aeronautics LLC
Buffalo, South Dakota
Standard 2017-12-29 ValidFAA registration status code V: Valid registration. All codes
N98592 Cessna
172P
Fixed-wing, single engine Round-Out Aviation LLC
Owasso, Oklahoma
Standard 2017-12-26 ValidFAA registration status code V: Valid registration. All codes
N240RW Holmgren Carl
GLASAIR SH 2
Fixed-wing, single engine Sayr Construction
Lake Havasu City, Arizona
Experimental 2017-12-18 ValidFAA registration status code V: Valid registration. All codes
N7359Y Piper
PA-30
Fixed-wing, multi-engine Awmr LLC
Conroe, Texas
Standard 2017-12-14 ValidFAA registration status code V: Valid registration. All codes
N7639Y Piper
PA-30
Fixed-wing, multi-engine Caviris Homestead Farm LLC
Rollinsford, New Hampshire
Standard 2017-12-13 ValidFAA registration status code V: Valid registration. All codes
N2751G Champion
7KCAB
Fixed-wing, single engine Spears Patricia C
Longmont, Colorado
Standard 2017-12-12 ValidFAA registration status code V: Valid registration. All codes
N7503Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2017-12-08 ValidFAA registration status code V: Valid registration. All codes
N8186Y Piper
PA-30
Fixed-wing, multi-engine Heiter Aviation Services LLC
Leesburg, Indiana
Standard 2017-11-28 ValidFAA registration status code V: Valid registration. All codes
N8157Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2017-11-17 ValidFAA registration status code V: Valid registration. All codes
N7122Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2017-11-02 ValidFAA registration status code V: Valid registration. All codes
N3579A Piper
PA-22-135
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-11-01 ValidFAA registration status code V: Valid registration. All codes
N8513Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Oregon
Standard 2017-11-01 ValidFAA registration status code V: Valid registration. All codes
N31939 Holt Thomas S
COZY MKIV
Fixed-wing, single engine Individual owner
Utah
Experimental 2017-10-31 ValidFAA registration status code V: Valid registration. All codes
N141CJ Harns John H
F8L FALCO
Fixed-wing, single engine Co-owned owner
Nevada
Experimental 2017-10-18 ValidFAA registration status code V: Valid registration. All codes
N7148 Tombolato
MARQUART MA-5
Fixed-wing, single engine Individual owner
Vermont
Experimental 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N7163Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Washington
Standard 2017-10-04 ValidFAA registration status code V: Valid registration. All codes
N7633Y Piper
PA-30
Fixed-wing, multi-engine Matt Younkin Airshows INC
Siloam Springs, Arkansas
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N7059Y Piper
PA-30
Fixed-wing, multi-engine Phill-Air INC
Dover, Delaware
Standard 2017-09-14 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.