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
N312DP Robinson Helicopter
R44 II
Helicopter Rotor Technologies INC
Nashua, New Hampshire
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N389BW Piper
PA-32R-301
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N211KG Staudacher Aircraft Inc
S-300
Fixed-wing, single engine Individual owner
Massachusetts
Experimental 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N39600 Piper
PA-32-300
Fixed-wing, single engine Inlet Shores Aviation LLC
Ponce Inlet, Florida
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N62286 Socata
TB-20 TRINIDAD
Fixed-wing, single engine Soaring Dragon LLC
Sheridan, Wyoming
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N114SG Rockwell International
114A
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N2672X Cessna
182S
Fixed-wing, single engine Bird Nest Aviation LLC
Sheldon, Iowa
Standard 2023-04-18 ValidFAA registration status code V: Valid registration. All codes
N3500M Cessna
182T
Fixed-wing, single engine Individual owner
California
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N41KK Piper
AEROSTAR 600
Fixed-wing, multi-engine Dale Aviation LLC
Wilmington, Delaware
Standard 2023-04-16 ValidFAA registration status code V: Valid registration. All codes
N64WC Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2023-04-14 ValidFAA registration status code V: Valid registration. All codes
N12PU Meyer Dan
PITTS-SUPERSTINKER
Fixed-wing, single engine Individual owner
California
Experimental 2023-04-13 ValidFAA registration status code V: Valid registration. All codes
N166LM Maule
M-7-235
Fixed-wing, single engine Flight Rt LLC
Thonotosassa, Florida
Standard 2023-04-13 ValidFAA registration status code V: Valid registration. All codes
N9682N Rockwell International
114
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-04-13 ValidFAA registration status code V: Valid registration. All codes
N124HH Robinson Helicopter
R44 II
Helicopter Rotorwing LLC
Sheffield, Illinois
Multiple 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N12JX Gillis Charles C
PITTS S2S
Fixed-wing, single engine Ac Holdings II INC
Lewes, Delaware
Experimental 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N23521 Cessna
182S
Fixed-wing, single engine Aircraft Holdings LLC
Missoula, Montana
Standard 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N6903R Piper
PA-60-602P
Fixed-wing, multi-engine Fusion Marine INC
Stuart, Florida
Standard 2023-04-07 ValidFAA registration status code V: Valid registration. All codes
N83TT Piper
AEROSTAR 601P
Fixed-wing, multi-engine L1 Air LLC
Wilmington, Delaware
Standard 2023-04-07 ValidFAA registration status code V: Valid registration. All codes
N976DR Daniel A Robinson
HIGH 6 BERKUT 540
Fixed-wing, single engine Red 6 Technologies LLC
Santa Monica, California
Experimental 2023-04-07 ValidFAA registration status code V: Valid registration. All codes
N63461 Cessna
182T
Fixed-wing, single engine Georgia Golf Cars INC
Douglas, Georgia
Standard 2023-04-06 ValidFAA registration status code V: Valid registration. All codes
N723RG Robinson Helicopter
R44 II
Helicopter Hatchett Creek Leasing INC
Delta, Alabama
Standard 2023-04-06 ValidFAA registration status code V: Valid registration. All codes
N38BM Maule
MT-7-235
Fixed-wing, single engine Individual owner
Connecticut
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N616MC Cessna
182T
Fixed-wing, single engine Fletcher Flying LLC
Russellville, Arkansas
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N65DE Ciernia James R
GLASAIR III
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N754RH Robinson Helicopter
R44 II
Helicopter Bmw Aviation LLC
Monroe, Georgia
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N390MS Piper
PA-32-301
Fixed-wing, single engine Individual owner
California
Standard 2023-04-04 ValidFAA registration status code V: Valid registration. All codes
N564PC Cessna
182S
Fixed-wing, single engine Hargest Custom Cabinetry LLC
Clermont, New Jersey
Standard 2023-04-04 ValidFAA registration status code V: Valid registration. All codes
N540BS Young William R
GLASAIR III
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N33CX Robinson Helicopter
R44 II
Helicopter K & S Irrigation INC DBA
Higbee, Missouri
Standard 2023-03-31 ValidFAA registration status code V: Valid registration. All codes
N321CG Piper
AEROSTAR 601P
Fixed-wing, multi-engine Super 700 LLC
Robbinsville, New Jersey
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N97RW Cessna
182S
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N5861N Rockwell International
114
Fixed-wing, single engine Individual owner
Washington
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N2148P Piper
PA-32-300
Fixed-wing, single engine Horizon Aviation LLC
Buffalo, New York
Standard 2023-03-25 ValidFAA registration status code V: Valid registration. All codes
N3594J Piper
PA-32-300
Fixed-wing, single engine Wxs Flying LLC
Mesa, Arizona
Standard 2023-03-25 ValidFAA registration status code V: Valid registration. All codes
N76HR Lake Larry
HARMON ROCKET II
Fixed-wing, single engine Headwaters Flying Service LLC
Three Forks, Montana
Experimental 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N7139X Cessna
182S
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N7267Y Cessna
182S
Fixed-wing, single engine Volatilis Aviation LLC
Collinsville, Illinois
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N903HW Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Texas
Special flight permit 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N114JG Commander Aircraft Co
114-B
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N115DK Kirk Robert
GLASAIR III
Fixed-wing, single engine N4471J LLC
Dover, Delaware
Experimental 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N148SM Cessna
182S
Fixed-wing, single engine Sarasota Westwind Flyers INC
Sarasota, Florida
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N222VB Robinson Helicopter
R44 II
Helicopter Galaxy Aviation LLC
Nantucket, Massachusetts
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N111KD Maule
MX-7-235
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N38752 Piper
PA-32R-300
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N10555 Maule
M-7-235B
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-03-19 ValidFAA registration status code V: Valid registration. All codes
N36295 Piper
PA-32RT-300
Fixed-wing, single engine Bar Aviation LLC
Eatonton, Georgia
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N4329F Piper
PA-36-300
Fixed-wing, single engine Strathman Aerial Spraying LLC
Axtell, Kansas
Restricted 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N144EH Robinson Helicopter
R44 II
Helicopter Scout Aviation LLC
Odessa, Texas
Standard 2023-03-16 ValidFAA registration status code V: Valid registration. All codes
N9292L Piper
PA-32R-301
Fixed-wing, single engine
Standard 2023-03-16 ValidFAA registration status code V: Valid registration. All codes
N414P Phillips Fred L
GLASAIR III
Fixed-wing, single engine Plane Racing III LLC
Chandler, Arizona
Experimental 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N345SP Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N449CN Robinson Helicopter
R44 II
Helicopter Speedo Air LLC
Hales Location, New Hampshire
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N542W Piper
PA-32-300
Fixed-wing, single engine N542W LLC
Baton Rouge, Louisiana
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N92038 Maule
M-7-235
Fixed-wing, single engine M7235C LLC
Boulder, Colorado
Standard 2023-03-13 ValidFAA registration status code V: Valid registration. All codes
N4327J Piper
PA-32-301
Fixed-wing, single engine Dowling Investments LLC
Gillette, Wyoming
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N158JR Cessna
182S
Fixed-wing, single engine Co-owned owner
Montana
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N2509X Socata
TB-20 TRINIDAD
Fixed-wing, single engine Orsippus Management LLC
El Dorado Hills, California
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N41453 Piper
PA-32R-301
Fixed-wing, single engine Swfl Aviation LLC
Cape Coral, Florida
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N464K Cessna
182S
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N771LB Piper
AEROSTAR 601P
Fixed-wing, multi-engine Lat of Florida LLC
Winter Park, Florida
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N227RJ Cessna
182S
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N253WP Cessna
182S
Fixed-wing, single engine Eastern Cincinnati Aviation INC
Batavia, Ohio
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N31642 Piper
PA-32RT-300
Fixed-wing, single engine Gr8 Sky Aviation LLC
Calhoun, Georgia
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N9275X Piper
PA-32R-301
Fixed-wing, single engine Barrakuda LTD
Bend, Oregon
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N829DR Rakestraw David U Iii
GLASAIR III
Fixed-wing, single engine
Experimental 2023-03-05 ValidFAA registration status code V: Valid registration. All codes
N1827A Cessna
182T
Fixed-wing, single engine Co-owned owner
Florida
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N246ME Cessna
T206H
Fixed-wing, single engine Wyoming Seaplanes LLC
Alpine, Wyoming
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N353CH Hautamaki Charles
GLASAIR III SH-3R
Fixed-wing, single engine Individual owner
California
Experimental 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N3777L Murphree M C
VELOCITY ELITE XL
Fixed-wing, single engine Cowboy Aviation Services LLC
Polson, Montana
Experimental 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N7MA Commander Aircraft Co
114-B
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N79FY Piper
PA-32-300
Fixed-wing, single engine Manaj Aviation LLC
Wilmington, Ohio
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N81GT Socata
TB-20 TRINIDAD
Fixed-wing, single engine Camgo LLC
Kenosha, Wisconsin
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N74543 Robinson Helicopter
R44 II
Helicopter Sky Solutions LLC
Detroit, Michigan
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N820SP Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Individual owner
California
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N442DR Robinson Helicopter
R44 II
Helicopter Changing Horizons LLC
Helena, Montana
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N776W Piper
PA-31-350
Fixed-wing, multi-engine Bcww LLC
Bakersfield, California
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N303DR Shockley Lee W
RV-10
Fixed-wing, single engine Individual owner
Colorado
Experimental 2023-02-26 ValidFAA registration status code V: Valid registration. All codes
N160MA Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Co-owned owner
Florida
Standard 2023-02-25 ValidFAA registration status code V: Valid registration. All codes
N21418 Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-02-23 ValidFAA registration status code V: Valid registration. All codes
N7261M Cessna
182S
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-02-23 ValidFAA registration status code V: Valid registration. All codes
N14SP Smith
AEROSTAR 601P
Fixed-wing, multi-engine Amyateef Lllc
North Las Vegas, Nevada
Standard 2023-02-22 ValidFAA registration status code V: Valid registration. All codes
N260PW Pitts Aerobatics
S-2B
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2023-02-22 ValidFAA registration status code V: Valid registration. All codes
N485GA Piper
PA-32-301
Fixed-wing, single engine Individual owner
Florida
Standard 2023-02-21 ValidFAA registration status code V: Valid registration. All codes
N53455 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Florida
Standard 2023-02-21 ValidFAA registration status code V: Valid registration. All codes
N862MR Robinson Helicopter
R44 II
Helicopter Heli-Spray LLC
Avalon, Texas
Standard 2023-02-21 ValidFAA registration status code V: Valid registration. All codes
N38448 Piper
PA-32R-300
Fixed-wing, single engine Orphans Hands INC
Clinton, Tennessee
Standard 2023-02-20 ValidFAA registration status code V: Valid registration. All codes
N442JM Robinson Helicopter
R44 II
Helicopter Starr County Helicopter Services LLC
Mcallen, Texas
Standard 2023-02-20 ValidFAA registration status code V: Valid registration. All codes
N486 Reynolds Robert H
STLP STDSTR II SA300
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2023-02-20 ValidFAA registration status code V: Valid registration. All codes
N5645D Maule
M-6-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-02-20 ValidFAA registration status code V: Valid registration. All codes
N8030J Piper
AEROSTAR 601P
Fixed-wing, multi-engine Keystone Aircraft Leasing LLC
Selinsgrove, Pennsylvania
Standard 2023-02-20 ValidFAA registration status code V: Valid registration. All codes
N830TC Piper
PA-32R-301
Fixed-wing, single engine
Standard 2023-02-20 ValidFAA registration status code V: Valid registration. All codes
N42VB Robinson Helicopter
R44 II
Helicopter Heli AG LLC
Waller, Texas
Standard 2023-02-17 ValidFAA registration status code V: Valid registration. All codes
N559TJ Cessna
182S
Fixed-wing, single engine Hangar 22 LLC
Watkinsville, Georgia
Standard 2023-02-17 ValidFAA registration status code V: Valid registration. All codes
N6007H Commander Aircraft Co
114-B
Fixed-wing, single engine Police Facility Design Group Pa
Kansas City, Kansas
Standard 2023-02-17 ValidFAA registration status code V: Valid registration. All codes
N66RP Dehavilland
DHC-1B-2
Fixed-wing, single engine Hedges Aviation INC
Ronkonkoma, New York
Experimental 2023-02-17 ValidFAA registration status code V: Valid registration. All codes
N712JT Piper
PA-23-250
Fixed-wing, multi-engine Skylens LLC
Hammond, Louisiana
Standard 2023-02-17 ValidFAA registration status code V: Valid registration. All codes
N7528U Robinson Helicopter
R44 II
Helicopter AG Ranch Services LLC
Lewistown, Montana
Restricted 2023-02-17 ValidFAA registration status code V: Valid registration. All codes
N53572 Piper
PA-32R-301
Fixed-wing, single engine Arb Aviation LLC
Palm Harbor, Florida
Standard 2023-02-16 ValidFAA registration status code V: Valid registration. All codes
N823JW Commander Aircraft Co
114-B
Fixed-wing, single engine Individual owner
Hawaii
Standard 2023-02-16 ValidFAA registration status code V: Valid registration. All codes
N14297 Cessna
182T
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-02-15 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.