The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 2026

Lycoming IO-540 series

4,218 aircraft on the U.S. register carry a Lycoming IO-540 series engine, rated at about 300 horsepower. The Piper PA-32 Cherokee Six, Lance and Saratoga is the model most often fitted with it (1,059 aircraft). The aircraft carrying it were built between 1965 and 2026.

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-540 series (2 codes). FAA spellings: IO-540 SER · IO 540 SER.

When the aircraft were built by decade

By decade built, as a table
aircraft
19402
195013
196096
1970797
1980579
1990748
20001,339
201078
202056

What the FAA has certified, ordered and been told about the Lycoming IO-540 series the component layer

The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 49 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 316 failure reports with the FAA since 1995, 17 of them in the last ten years.

FAA orders 49 airworthiness directives · newest first

2026-09-142026-17-10 · Reciprocating Engine Cylinder Section · engine
2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2017-08-152017-16-11 · Reciprocating Engine Power Section · engine
2015-11-032015-19-07 · Fuel injector fuel lines · engine

All orders naming the Lycoming IO-540 series

Failure reports 316 since · what operators and shops told the FAA

012253850950005101523226
Failure reports by year, as a table
reports
953
963
973
984
994
0011
0137
0215
0337
0434
0550
0630
0719
0812
093
1012
112
127
135
146
152
171
194
202
222
231
245
262

Parts most often reported as the reports name them

Magneto19Cylinder10Bearing8Gasket8Bolt7Boot7Actuator6Line6Pump6Baffle5
Parts most reported, as a table
reports
Magneto19
Cylinder10
Bearing8
Gasket8
Bolt7
Boot7
Actuator6
Line6
Pump6
Baffle5

Latest reports

2026-05-09Thrust Button: faulted
2026-01-29Magneto: failed
2024-08-07Magneto: failed
2024-08-06Magneto: failed
2024-03-14Magneto: failed

Certificates and bulletins

1E4Type certificate held by Lycoming Engines · 81 models listed · revised February 28, 2018

Safety bulletins 14 · 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,...
2011-03-31NE-08-26R3 · Magneto/Distributor

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

The whole map of how records connect · these connections as data: /graph/engine/lycoming-io-540-series.json.

Aircraft newest certificates first · 4,218

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N988RA Cessna
182S
Fixed-wing, single engine Fifteen-Sixty LLC
Ottawa Hills, Ohio
Standard 2024-09-17 ValidFAA registration status code V: Valid registration. All codes
N302KT Tooker Kenneth
GLASAIR III
Fixed-wing, single engine Skydrift Aviation LLC
Kalispell, Montana
Experimental 2024-09-16 ValidFAA registration status code V: Valid registration. All codes
N55XL Sheehan Jack
VELOCITY
Fixed-wing, single engine Business Development Systems LLC
Seaford, Virginia
Experimental 2024-09-16 ValidFAA registration status code V: Valid registration. All codes
N470S Hopkins William C
SH-3A
Fixed-wing, single engine Individual owner
Nevada
Experimental 2024-09-13 ValidFAA registration status code V: Valid registration. All codes
N14004 Aerofab Inc
LAKE LA-4-250
Fixed-wing, single engine Grusenmeyer-Scott Aviation LLC
Orlando, Florida
Standard 2024-09-12 ValidFAA registration status code V: Valid registration. All codes
N22GJ Piper
PA-32-301
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-09-10 ValidFAA registration status code V: Valid registration. All codes
N8423P Piper
PA-32-301
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-09-10 ValidFAA registration status code V: Valid registration. All codes
N2370E Cessna
182S
Fixed-wing, single engine Co-owned owner
Rhode Island
Standard 2024-09-07 ValidFAA registration status code V: Valid registration. All codes
N9229B Piper
PA-32R-301
Fixed-wing, single engine Ssb Holdings LLC
Lake Wales, Florida
Standard 2024-09-04 ValidFAA registration status code V: Valid registration. All codes
N943MA Abel Michael S
RV-10
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2024-09-02 ValidFAA registration status code V: Valid registration. All codes
N107ST Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-08-31 ValidFAA registration status code V: Valid registration. All codes
N47764 Piper
PA-32R-300
Fixed-wing, single engine Wl Aviation LLC
Olney, Maryland
Standard 2024-08-31 ValidFAA registration status code V: Valid registration. All codes
N20KP Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-08-30 ValidFAA registration status code V: Valid registration. All codes
N272T Staudacher Aircraft Inc
S-300D2
Fixed-wing, single engine Individual owner
Oregon
Experimental 2024-08-24 ValidFAA registration status code V: Valid registration. All codes
N3641S Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Texas
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N49809 Rockwell International
114
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N23P Reinemer J/Stephens C J
GLASAIR III
Fixed-wing, single engine Novabox LLC
Wilmington, Delaware
Experimental 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N420HP Cessna
182T
Fixed-wing, single engine Braden Health LLC
Greensboro, North Carolina
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N53HR Harmon John
HARMON ROCKET 3
Fixed-wing, single engine Plum South Aircraft LLC
Abbeville, South Carolina
Experimental 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N8442H Piper
PA-32-301
Fixed-wing, single engine Co-owned owner
California
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N389BB Bohannon Bruce
BOHANNON B-1
Fixed-wing, single engine Lone Star Flight Museum
Houston, Texas
Experimental 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N711EM Piper
PA-32RT-300
Fixed-wing, single engine Blue Sky Jet Services LLC
Lititz, Pennsylvania
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N930M Chris Golden/J Saint/E Chaffin
RV-10
Fixed-wing, single engine Individual owner
Ohio
Experimental 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N73G Rockwell International
114A
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N432KC Piper
PA-32R-301
Fixed-wing, single engine Kjomo Aviation LLC
Ocean Springs, Mississippi
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N129CP Maule
MT-7-235
Fixed-wing, single engine Upright Aviation LLC
Helena, Montana
Standard 2024-08-14 ValidFAA registration status code V: Valid registration. All codes
N72749 Cessna
182S
Fixed-wing, single engine Sarkcap Global INC
Carlsbad, California
Standard 2024-08-13 ValidFAA registration status code V: Valid registration. All codes
N6459L Maule
M-7-260C
Fixed-wing, single engine Falcon Financial Solutions
Meadow Vista, California
Standard 2024-08-12 ValidFAA registration status code V: Valid registration. All codes
N62J Duncan Spurgeon Jr
VELOCITY XLRG
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-08-09 ValidFAA registration status code V: Valid registration. All codes
N734DH Jacobson Martin S
GLASAIR III
Fixed-wing, single engine Individual owner
Nevada
Experimental 2024-08-09 ValidFAA registration status code V: Valid registration. All codes
N546K Cessna
182T
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2024-08-08 ValidFAA registration status code V: Valid registration. All codes
N3011K Piper
PA-32-300
Fixed-wing, single engine Bravo Farm LLC
Dover, Delaware
Standard 2024-08-07 ValidFAA registration status code V: Valid registration. All codes
N31996 Piper
PA-32RT-300
Fixed-wing, single engine Seacoast Plane Partners LLC
Exeter, New Hampshire
Standard 2024-08-02 ValidFAA registration status code V: Valid registration. All codes
N6943A Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
New York
Standard 2024-08-02 ValidFAA registration status code V: Valid registration. All codes
N5512C Maule
MT-7-235
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N682SB Cessna
182T
Fixed-wing, single engine Sundowners INC
Fort Myers, Florida
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N954TC Piper
PA32-301FT
Fixed-wing, single engine Cohbro Aviation INC
Bloomfield, Connecticut
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N64TB Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Florida
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N1111K Piper
PA-60-602P
Fixed-wing, multi-engine Blue Monkey Disposing & Recycling INC
Tampa, Florida
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N313CW Wolff Charles L
REVOLUTION
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N333VA Piper
PA-23-250
Fixed-wing, multi-engine Xrrx INC
Wilmington, Delaware
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N353AW Cessna
182S
Fixed-wing, single engine Airflow LLC
Missoula, Montana
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N59BG Gordon Bradley W
GLASAIR III
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N415EC Fanning D/Saint J
RV-10
Fixed-wing, single engine Creativity Before Capital LLC
Tampa, Florida
Experimental 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N621TG Piper
PA-32-300
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N199RA Cessna
182S
Fixed-wing, single engine N199Ra LLC
Huntington Woods, Michigan
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N298JC Cessna
TR182
Fixed-wing, single engine Individual owner
Iowa
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N2391G Cessna
182S
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N810BK Robinson Helicopter
R44 II
Helicopter Mccr LLC
Anchorage, Alaska
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N114SJ Rockwell International
114
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N205SF Piper
PA-32R-300
Fixed-wing, single engine 242 Skies LLC
Troutman, North Carolina
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N4145Z Piper
PA-32R-301
Fixed-wing, single engine Jma Aviation LLC
Pompano Beach, Florida
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N74808 Robinson Helicopter
R44 II
Helicopter United Helicopter Leasing LLC
Honolulu, Hawaii
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N31573 Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N44JU Robinson Helicopter
R44 II
Helicopter Echo Mike Consulting LLC
Wilmington, Delaware
Multiple 2024-07-03 ValidFAA registration status code V: Valid registration. All codes
N7801A Piper
PA-32-300
Fixed-wing, single engine Individual owner
Florida
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N8355E Piper
PA-32R-301
Fixed-wing, single engine High Noon Leasing LLC
Anchorage, Alaska
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N588DC Cessna
182S
Fixed-wing, single engine Dynoair LLC
Watertown, South Dakota
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N498LP Pipistrel
PANTHERA X152
Electric airplane N57Kk LLC
Livingston, Montana
Experimental 2024-06-29 ValidFAA registration status code V: Valid registration. All codes
N5647L Maule
M-5-235C
Fixed-wing, single engine Individual owner
South Dakota
Standard 2024-06-28 ValidFAA registration status code V: Valid registration. All codes
N321PR Robinson Helicopter
R44 II
Helicopter Chavi LLC
Fredericksburg, Texas
Standard 2024-06-27 ValidFAA registration status code V: Valid registration. All codes
N35HP Hoelting Ron
GLASAIR III
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Experimental 2024-06-27 ValidFAA registration status code V: Valid registration. All codes
N82WG Cessna
182S
Fixed-wing, single engine Individual owner
Washington
Standard 2024-06-26 ValidFAA registration status code V: Valid registration. All codes
N169T Tobison
SKYBOLT
Fixed-wing, single engine Skybolt 3 LLC
Arvada, Colorado
Experimental 2024-06-25 ValidFAA registration status code V: Valid registration. All codes
N9841X Cessna
182T
Fixed-wing, single engine Harms Aviation Investments LLC
Wilmington, Delaware
Standard 2024-06-25 ValidFAA registration status code V: Valid registration. All codes
N601NG Piper Aircraft Corporation
PA-60-601P
Fixed-wing, multi-engine Bullard Aviation Services INC
Ormond Beach, Florida
Standard 2024-06-24 ValidFAA registration status code V: Valid registration. All codes
N96RT Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-06-24 ValidFAA registration status code V: Valid registration. All codes
N7530E Robinson Helicopter
R44 II
Helicopter K24 Farms LLC
Denver City, Texas
Multiple 2024-06-22 ValidFAA registration status code V: Valid registration. All codes
N574CL Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Florida
Standard 2024-06-21 ValidFAA registration status code V: Valid registration. All codes
N646KW Piper
PA-32R-301
Fixed-wing, single engine Hely Aviation LLC
Columbus, Indiana
Standard 2024-06-21 ValidFAA registration status code V: Valid registration. All codes
N751LB Piper
PA-32R-301
Fixed-wing, single engine N6105S LLC
Norwood, North Carolina
Standard 2024-06-20 ValidFAA registration status code V: Valid registration. All codes
N521KG Simpson Joseph E
RV10
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2024-06-18 ValidFAA registration status code V: Valid registration. All codes
N110LV Dedominicis Alex E
VANS RV-10
Fixed-wing, single engine Rv Transition LLC
Columbia Falls, Montana
Experimental 2024-06-15 ValidFAA registration status code V: Valid registration. All codes
N8401S Revo Inc
LAKE 250
Fixed-wing, single engine Rg Aviation LLC
Fulton, Mississippi
Standard 2024-06-14 ValidFAA registration status code V: Valid registration. All codes
N88124 Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine West Aviation INC
Creston, Iowa
Restricted 2024-06-14 ValidFAA registration status code V: Valid registration. All codes
N333CB Piper
PA-24-260
Fixed-wing, single engine Secondary Minimums Task Force LLC
Kalispell, Montana
Standard 2024-06-11 ValidFAA registration status code V: Valid registration. All codes
N644AK Robinson Helicopter
R44 II
Helicopter MD AG Services LLC
Sterling City, Texas
Standard 2024-06-11 ValidFAA registration status code V: Valid registration. All codes
N92779 Piper
PA-32R-301
Fixed-wing, single engine Montana Land Properties LLC
Missoula, Montana
Standard 2024-06-11 ValidFAA registration status code V: Valid registration. All codes
N11LK Wilson Duane
RV-10
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-06-09 ValidFAA registration status code V: Valid registration. All codes
N83694 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-06-09 ValidFAA registration status code V: Valid registration. All codes
N5917N Rockwell International
114A
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2024-06-08 ValidFAA registration status code V: Valid registration. All codes
N602TP Piper
AEROSTAR 602P
Fixed-wing, multi-engine Chemic Plane LLC
Grand Rapids, Michigan
Standard 2024-06-08 ValidFAA registration status code V: Valid registration. All codes
N44560 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-06-07 ValidFAA registration status code V: Valid registration. All codes
N2214F Piper
PA-32RT-300
Fixed-wing, single engine Sky Financial Services INC
Center Valley, Pennsylvania
Standard 2024-06-06 ValidFAA registration status code V: Valid registration. All codes
N2460V Piper
PA-36-300
Fixed-wing, single engine Co-owned owner
North Dakota
Restricted 2024-06-06 ValidFAA registration status code V: Valid registration. All codes
N65860 Cessna
182T
Fixed-wing, single engine Edb Air INC
Wilsonville, Oregon
Standard 2024-06-05 ValidFAA registration status code V: Valid registration. All codes
N972RT Gross Robert
F1
Fixed-wing, single engine Individual owner
Colorado
Experimental 2024-06-05 ValidFAA registration status code V: Valid registration. All codes
N362ME Cessna
182S
Fixed-wing, single engine Co-owned owner
California
Standard 2024-06-04 ValidFAA registration status code V: Valid registration. All codes
N93ML Maule
M-7-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-06-04 ValidFAA registration status code V: Valid registration. All codes
N405WF Cessna
182S
Fixed-wing, single engine Van Bortel Aircraft INC
Arlington, Texas
Standard 2024-05-31 ValidFAA registration status code V: Valid registration. All codes
N110WR Piper
PA-32RT-300
Fixed-wing, single engine Ruffo-Silva LLC
Wilmington, Delaware
Standard 2024-05-30 ValidFAA registration status code V: Valid registration. All codes
N517MM Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-05-30 ValidFAA registration status code V: Valid registration. All codes
N188HL Leistikow D/Holliday R
VELOCITY XL RG
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-05-28 ValidFAA registration status code V: Valid registration. All codes
N900AM Piper
PA-23-250
Fixed-wing, multi-engine Gimli Son LLC
Fort Lauderdale, Florida
Restricted 2024-05-28 ValidFAA registration status code V: Valid registration. All codes
N200EB Bellanca
17-31ATC
Fixed-wing, single engine Individual owner
Standard 2024-05-27 ValidFAA registration status code V: Valid registration. All codes
N121HE Piper
PA-32-300
Fixed-wing, single engine Jarrett Air LLC
Ashland City, Tennessee
Standard 2024-05-25 ValidFAA registration status code V: Valid registration. All codes
N369SS Watt John Archibald
STEEN SKYBOLT
Fixed-wing, single engine Evolution Enterprises LLC
Wilmington, Delaware
Experimental 2024-05-25 ValidFAA registration status code V: Valid registration. All codes
N45050 Piper
PA-23-250
Fixed-wing, multi-engine Rav Aviation LLC
Miramar, Florida
Standard 2024-05-25 ValidFAA registration status code V: Valid registration. All codes
N9774F Cessna
182S
Fixed-wing, single engine Tailwind Aviation Solutions LLC
Perry, Georgia
Standard 2024-05-24 ValidFAA registration status code V: Valid registration. All codes
N311RB Benson Rodney
GLASAIR III
Fixed-wing, single engine Flying Ace 75 LLC
Wilmington, Delaware
Experimental 2024-05-23 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.