The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 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
N242EB Piper
PA-32-300
Fixed-wing, single engine Eb Marine LLC
Riviera Beach, Florida
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N253RV Gillespie Byron W
VANS RV-10
Fixed-wing, single engine Individual owner
Georgia
Experimental 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N820SS Cessna
182S
Fixed-wing, single engine Floyd Air LLC
Searcy, Arkansas
Standard 2021-01-28 ValidFAA registration status code V: Valid registration. All codes
N252EJ Cessna
182S
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N9795C Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N802DP Commander Aircraft Co
114-B
Fixed-wing, single engine Individual owner
Maine
Standard 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N355CB Maule
M-7-235
Fixed-wing, single engine M S T S LLC
Moses Lake, Washington
Standard 2021-01-25 ValidFAA registration status code V: Valid registration. All codes
N711WD Weller Wallace L
SEAWIND 3000
Fixed-wing, single engine Seawind Adventures LLC
Reno, Nevada
Experimental 2021-01-25 ValidFAA registration status code V: Valid registration. All codes
N200RB Blatter Richard A
BLATTER ADVANTAGE
Fixed-wing, single engine Individual owner
Florida
Experimental 2021-01-22 ValidFAA registration status code V: Valid registration. All codes
N5487 Piper
PA-32-300
Fixed-wing, single engine Rhj Investments LLC
Show Low, Arizona
Standard 2021-01-22 ValidFAA registration status code V: Valid registration. All codes
N21921 Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2021-01-21 ValidFAA registration status code V: Valid registration. All codes
N2504B Socata
TB-20 TRINIDAD
Fixed-wing, single engine Hatz Aeronautics LLC
Pompano Beach, Florida
Standard 2021-01-21 ValidFAA registration status code V: Valid registration. All codes
N42388 Maule
MT-7-260
Fixed-wing, single engine Individual owner
Maine
Standard 2021-01-21 ValidFAA registration status code V: Valid registration. All codes
N4169T Piper
PA-32R-301T
Fixed-wing, single engine Individual owner
Nevada
Standard 2021-01-19 ValidFAA registration status code V: Valid registration. All codes
N790SA Cessna
206H
Fixed-wing, single engine Tavern Aviation LLC
Tavernier, Florida
Standard 2021-01-14 ValidFAA registration status code V: Valid registration. All codes
N8096V Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-01-12 ValidFAA registration status code V: Valid registration. All codes
N1074X Cessna
206H
Fixed-wing, single engine Kelley Air LLC
Milford, Michigan
Standard 2021-01-09 ValidFAA registration status code V: Valid registration. All codes
N3146S Nys John M
RV-10A
Fixed-wing, single engine Individual owner
Florida
Experimental 2021-01-08 ValidFAA registration status code V: Valid registration. All codes
N7333X Cessna
R182
Fixed-wing, single engine Frederick Aero Development INC
Murrieta, California
Standard 2021-01-08 ValidFAA registration status code V: Valid registration. All codes
N36185 Piper
PA-32RT-300
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2021-01-07 ValidFAA registration status code V: Valid registration. All codes
N550P Halberg Paul V Trustee
GLASAIR-III
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N146F Cessna
182T
Fixed-wing, single engine Acrehood Air LLC
St Augustine, Florida
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N235MY Maule
M-8-235
Fixed-wing, single engine Individual owner
Oregon
Standard 2020-12-29 ValidFAA registration status code V: Valid registration. All codes
N5890N Rockwell International
114A
Fixed-wing, single engine Individual owner
Texas
Standard 2020-12-29 ValidFAA registration status code V: Valid registration. All codes
N14007 Cessna
182T
Fixed-wing, single engine Kga Aviation LLC
Alfred, Maine
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N20BU Piper
PA-23-250
Fixed-wing, multi-engine N20Bu LLC
Champaign, Illinois
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N300WL Piper
PA-32R-300
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N585NY Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N89AT Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2020-12-21 ValidFAA registration status code V: Valid registration. All codes
N4154G Robinson Helicopter
R44 II
Helicopter Individual owner
Texas
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N416TS Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N501SG Piper
PA-32-301
Fixed-wing, single engine Mccair LLC
Mineral Wells, Texas
Standard 2020-12-18 ValidFAA registration status code V: Valid registration. All codes
N7276V Cessna
182S
Fixed-wing, single engine Legends Air Center LLC
Bentonville, Arkansas
Standard 2020-12-18 ValidFAA registration status code V: Valid registration. All codes
N767MT Cessna
182S
Fixed-wing, single engine Douglas Machinery LLC
Saint Francis, South Dakota
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N26821 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Alabama
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N449JG Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
California
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N82145 Piper
PA-32-301
Fixed-wing, single engine Kcn Aero Club INC
Overland Park, Kansas
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N296HP Piper
PA-32R-301
Fixed-wing, single engine Innova Air LLC
Encinitas, California
Standard 2020-12-15 ValidFAA registration status code V: Valid registration. All codes
N11DL Piper
AEROSTAR 600
Fixed-wing, multi-engine Individual owner
New York
Standard 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N500SG Piper
PA32-301FT
Fixed-wing, single engine Simplicity INC
Redmond, Oregon
Standard 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N6055U Commander Aircraft Co
114-B
Fixed-wing, single engine Co-owned owner
California
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N2445J Cessna
206H
Fixed-wing, single engine Buzzard Aviation INC
Freer, Texas
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N3410M Piper
PA-32-300
Fixed-wing, single engine Individual owner
Connecticut
Standard 2020-12-10 ValidFAA registration status code V: Valid registration. All codes
N4264D Maule
MT-7-260
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-12-10 ValidFAA registration status code V: Valid registration. All codes
N513TD Cessna
182S
Fixed-wing, single engine Weber Sandra L
Simpsonville, South Carolina
Standard 2020-12-07 ValidFAA registration status code V: Valid registration. All codes
N8XY Marshall John R
SUPER RV8
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2020-12-07 ValidFAA registration status code V: Valid registration. All codes
N61474 Cessna
182T
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2020-12-05 ValidFAA registration status code V: Valid registration. All codes
N716MC Cessna
182T
Fixed-wing, single engine Wing & A Prayer LLC
Wilmington, Delaware
Standard 2020-12-05 ValidFAA registration status code V: Valid registration. All codes
N843TC Cessna
182S
Fixed-wing, single engine Legends Air Center LLC
Bentonville, Arkansas
Standard 2020-12-03 ValidFAA registration status code V: Valid registration. All codes
N159RS Piper
PA-23-250
Fixed-wing, multi-engine Technical Education Services INC
Virginia Beach, Virginia
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N612MR Piper
PA-23-250
Fixed-wing, multi-engine Fladr LLC
Westfield, New Jersey
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N63863 Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
South Carolina
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N9269F Piper
PA-32R-301
Fixed-wing, single engine Smith Outdoor Adventures LLC
Panama City, Florida
Standard 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N9862A Astrup Lloyd H
VANS ACFT RV-10
Fixed-wing, single engine Individual owner
Arizona
Experimental 2020-11-30 ValidFAA registration status code V: Valid registration. All codes
N2430Y Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Illinois
Standard 2020-11-24 ValidFAA registration status code V: Valid registration. All codes
N503PV Vaughan Phillip Owen
VAUGHAN VELOCITY XL
Fixed-wing, single engine Individual owner
Florida
Experimental 2020-11-24 ValidFAA registration status code V: Valid registration. All codes
N3261M Cessna
182S
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2020-11-23 ValidFAA registration status code V: Valid registration. All codes
N626PB Paul Berkovitz
VANS RV-10
Fixed-wing, single engine Individual owner
California
Experimental 2020-11-20 ValidFAA registration status code V: Valid registration. All codes
N282MT Cessna
182S
Fixed-wing, single engine Individual owner
New York
Standard 2020-11-18 ValidFAA registration status code V: Valid registration. All codes
N2750M Piper
PA-32-300
Fixed-wing, single engine Mcgibbon Aviation LLC
Denver, Colorado
Standard 2020-11-17 ValidFAA registration status code V: Valid registration. All codes
N2123E Cessna
182T
Fixed-wing, single engine Dream Flights LLC
Brewton, Alabama
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N82910 Piper
PA-32R-301
Fixed-wing, single engine Great Bay Air LLC
North Hampton, New Hampshire
Standard 2020-11-14 ValidFAA registration status code V: Valid registration. All codes
N316V Piper
PA-32-300
Fixed-wing, single engine Upstate Sc Flyers LLC
West Union, South Carolina
Standard 2020-11-13 ValidFAA registration status code V: Valid registration. All codes
N277MC Robinson Helicopter
R44 II
Helicopter Individual owner
California
Standard 2020-11-12 ValidFAA registration status code V: Valid registration. All codes
N30245 Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Texas
Standard 2020-11-07 ValidFAA registration status code V: Valid registration. All codes
N31609 Piper
PA-32RT-300
Fixed-wing, single engine Kbb Aviation LLC
Prairie Grove, Arkansas
Standard 2020-11-07 ValidFAA registration status code V: Valid registration. All codes
N7268K Cessna
182S
Fixed-wing, single engine Felts Field Flying Club
Spokane Valley, Washington
Standard 2020-11-05 ValidFAA registration status code V: Valid registration. All codes
N37MV Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2020-11-04 ValidFAA registration status code V: Valid registration. All codes
N517TP Randy Garten
VELOCITY XLRG
Fixed-wing, single engine Aerotrust Services CORP Trustee
Wilmington, Delaware
Experimental 2020-11-03 ValidFAA registration status code V: Valid registration. All codes
N2455U Cessna
182T
Fixed-wing, single engine Vertol Systems CO INC
Destin, Florida
Standard 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N540TX Aerotek
PITTS S2S
Fixed-wing, single engine Boho LLC
Lewes, Delaware
Experimental 2020-11-02 ValidFAA registration status code V: Valid registration. All codes
N10MX Iar Sa Brasov
IAR 823
Fixed-wing, single engine Chihuahua Airport Partners LP
Plano, Texas
Experimental 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N951GT Piper
PA-32-300
Fixed-wing, single engine K and M Aviation LLC
Palm Harbor, Florida
Standard 2020-10-29 ValidFAA registration status code V: Valid registration. All codes
N63973 Piper
PA-23-250
Fixed-wing, multi-engine Wildflower Remedies LLC
Millersburg, Ohio
Standard 2020-10-28 ValidFAA registration status code V: Valid registration. All codes
N4125K Piper
PA-32R-301
Fixed-wing, single engine Fiji Air LLC
Atlanta, Georgia
Standard 2020-10-27 ValidFAA registration status code V: Valid registration. All codes
N124BS Cessna
182T
Fixed-wing, single engine Leair LLC
Eufaula, Alabama
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N3043Y Piper
PA-32-300
Fixed-wing, single engine All Aviation LLC
Wilmington, Delaware
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N4351K Piper
PA-32R-301
Fixed-wing, single engine Baumgartner Trucking INC
Lafayette, Indiana
Standard 2020-10-26 ValidFAA registration status code V: Valid registration. All codes
N4313N Piper
PA-32R-301
Fixed-wing, single engine Marco Aviators LLC
Marco Island, Florida
Standard 2020-10-21 ValidFAA registration status code V: Valid registration. All codes
N4371V Piper
PA-32-301
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2020-10-19 ValidFAA registration status code V: Valid registration. All codes
N700SD Piper
AEROSTAR 601P
Fixed-wing, multi-engine Tms Aviation LLC
Bon Aqua, Tennessee
Standard 2020-10-16 ValidFAA registration status code V: Valid registration. All codes
N85TR Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Nebraska
Standard 2020-10-15 ValidFAA registration status code V: Valid registration. All codes
N214GT Socata
TB20
Fixed-wing, single engine Acba INC Trustee
Wilmington, Delaware
Standard 2020-10-14 ValidFAA registration status code V: Valid registration. All codes
N3646P Piper
AEROSTAR 601
Fixed-wing, multi-engine Mr Group
Rapid City, South Dakota
Standard 2020-10-13 ValidFAA registration status code V: Valid registration. All codes
N113JC Piper
PA-28-236
Fixed-wing, single engine Individual owner
Colorado
Standard 2020-10-08 ValidFAA registration status code V: Valid registration. All codes
N9105Q Piper
PA-32R-301
Fixed-wing, single engine Talon Aviation of Nc LLC
Winston Salem, North Carolina
Standard 2020-10-08 ValidFAA registration status code V: Valid registration. All codes
N173EX Martino Thomas G
VELCITY 173 ELITE RG
Fixed-wing, single engine Individual owner
California
Experimental 2020-10-06 ValidFAA registration status code V: Valid registration. All codes
N4020R Piper
PA-32-300
Fixed-wing, single engine Individual owner
Colorado
Standard 2020-10-06 ValidFAA registration status code V: Valid registration. All codes
N9220C Piper
PA-32-300
Fixed-wing, single engine Dixon Aviation LLC
Oakland, Maryland
Standard 2020-10-05 ValidFAA registration status code V: Valid registration. All codes
N30069 Piper
PA-32-300
Fixed-wing, single engine Sky Pilot Aviation CORP
Carlsbad, California
Standard 2020-10-01 ValidFAA registration status code V: Valid registration. All codes
N3648B Piper
AEROSTAR 602P
Fixed-wing, multi-engine Mcgill Aviation INC
Greensboro, Georgia
Standard 2020-09-30 ValidFAA registration status code V: Valid registration. All codes
N509GC Piper
PA-23-250
Fixed-wing, multi-engine N509Gc LLC
Branford, Connecticut
Standard 2020-09-30 ValidFAA registration status code V: Valid registration. All codes
N6400S Hochmuth Harold W
RV-4/HARMON ROCKT II
Fixed-wing, single engine Co-owned owner
Colorado
Experimental 2020-09-28 ValidFAA registration status code V: Valid registration. All codes
N120D Piper
PA-23-250
Fixed-wing, multi-engine United States Air Force Owner
Hanscom Afb, Massachusetts
Multiple 2020-09-25 ValidFAA registration status code V: Valid registration. All codes
N346RS Falcon Helicopter Inc
LANCAIR IV-P
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N577JL Socata
TB-20 TRINIDAD
Fixed-wing, single engine Jaj Aviation LLC
Plano, Texas
Standard 2020-09-24 ValidFAA registration status code V: Valid registration. All codes
N330TF Piper
PA-32R-301
Fixed-wing, single engine Individual owner
New York
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N595TC Commander Aircraft Co
114TC
Fixed-wing, single engine Executive Outcomes PC
Jackson, Tennessee
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N65557 Cessna
182T
Fixed-wing, single engine Classic Aircraft LLC
South Bend, Indiana
Standard 2020-09-22 ValidFAA registration status code V: Valid registration. All codes
N2180F Piper
PA-32-300
Fixed-wing, single engine Gentle Breezes LLC
Johnson City, Tennessee
Standard 2020-09-21 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 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.