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
N56CV Rockwell International
114
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-03-05 ValidFAA registration status code V: Valid registration. All codes
N101VB Cessna
182S
Fixed-wing, single engine
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N7332A Piper
PA-32-301
Fixed-wing, single engine 4Y Aviation LLC
Owasso, Oklahoma
Standard 2022-03-03 ValidFAA registration status code V: Valid registration. All codes
N83988 Piper
PA-32R-301
Fixed-wing, single engine Frese Dental LLC
Birmingham, Alabama
Standard 2022-02-28 ValidFAA registration status code V: Valid registration. All codes
N340XL Shea Patrick
VELOCITY XLRG
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2022-02-26 ValidFAA registration status code V: Valid registration. All codes
N713W Dehavilland
DHC-1 T.MK. 10
Fixed-wing, single engine S&D Hangers
Galveston, Texas
Experimental 2022-02-24 ValidFAA registration status code V: Valid registration. All codes
N423JW Piper
PA-32-300
Fixed-wing, single engine Individual owner
California
Standard 2022-02-23 ValidFAA registration status code V: Valid registration. All codes
N3952M Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Texas
Standard 2022-02-16 ValidFAA registration status code V: Valid registration. All codes
N417DB Buck David G
LANCAIR IV
Fixed-wing, single engine Troposphere Research Academy LLC
Canby, Oregon
Experimental 2022-02-16 ValidFAA registration status code V: Valid registration. All codes
N4177T Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Texas
Standard 2022-02-14 ValidFAA registration status code V: Valid registration. All codes
N82542 Piper
PA-32R-301
Fixed-wing, single engine Withheld at owner's request
Standard 2022-02-12 ValidFAA registration status code V: Valid registration. All codes
N826D Smith
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Florida
Standard 2022-02-12 ValidFAA registration status code V: Valid registration. All codes
N575DC Piper
PA-32RT-300
Fixed-wing, single engine Armadillo Aviation LLC
Hummelstown, Pennsylvania
Standard 2022-02-11 ValidFAA registration status code V: Valid registration. All codes
N13ZF Maule
MX-7-235
Fixed-wing, single engine 13Zf LLC
Bend, Oregon
Standard 2022-02-09 ValidFAA registration status code V: Valid registration. All codes
N97GP Socata
TB20
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Standard 2022-02-08 ValidFAA registration status code V: Valid registration. All codes
N2376R Cessna
182S
Fixed-wing, single engine
Standard 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N7371 Cessna
182S
Fixed-wing, single engine
Standard 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N79MG Piper
AEROSTAR 600
Fixed-wing, multi-engine Castle Aviation INC
North Canton, Ohio
Standard 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N25WE Piper
PA-32R-301
Fixed-wing, single engine K & R Aviation LLC
Lubbock, Texas
Standard 2022-02-04 ValidFAA registration status code V: Valid registration. All codes
N71BW Piper
AEROSTAR 601P
Fixed-wing, multi-engine Laroche Aviation Services LLC
Bellaire, Ohio
Standard 2022-02-04 ValidFAA registration status code V: Valid registration. All codes
N3194W Robinson Helicopter
R44 II
Helicopter Niehaus Properties INC
Portland, Oregon
Standard 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N43VR Cessna
182S
Fixed-wing, single engine Mountain Ridge Aviation LLC
Millersburg, Pennsylvania
Standard 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N51MD Danielson Mark W
SKYBOLT
Fixed-wing, single engine Fly Upside Down LLC
Dillon, Colorado
Experimental 2022-01-31 ValidFAA registration status code V: Valid registration. All codes
N141RS Maule
M-7-260
Fixed-wing, single engine Frederick Investment CORP
Raleigh, North Carolina
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N99KT Tonymon Kenneth
VELOCITY XL RG
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N3574R Piper
PA-32-300
Fixed-wing, single engine Garner Financial Management INC
Franklin, Tennessee
Standard 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N23TA Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
Puerto Rico
Standard 2022-01-27 ValidFAA registration status code V: Valid registration. All codes
N23802 Cessna
206H
Fixed-wing, single engine Co-owned owner
Washington
Standard 2022-01-26 ValidFAA registration status code V: Valid registration. All codes
N379MA Cessna
182S
Fixed-wing, single engine Turtle With Wings LLC
Yukon, Oklahoma
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N5547J Socata
TB-20 TRINIDAD
Fixed-wing, single engine Winds Aloft LLC
Huntsville, Alabama
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N258V Winings James O
F-1 ROCKET
Fixed-wing, single engine F1R14A LLC
Huntersville, North Carolina
Experimental 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N56BS Jergenson Scotty Lee
JERGENSON SKYBOLT
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N5551Q Socata
TB-20 TRINIDAD
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2022-01-20 ValidFAA registration status code V: Valid registration. All codes
N498MA Piper
PA-32R-301
Fixed-wing, single engine Lake Air Express LLC
Bettendorf, Iowa
Standard 2022-01-14 ValidFAA registration status code V: Valid registration. All codes
N718DH Hirsch Darrel L
GLASAIR III SH-3R
Fixed-wing, single engine Individual owner
Idaho
Experimental 2022-01-14 ValidFAA registration status code V: Valid registration. All codes
N762DR Rockwell International
114
Fixed-wing, single engine C & J Flying LLC
Rapid City, South Dakota
Standard 2022-01-14 ValidFAA registration status code V: Valid registration. All codes
N362BP Piper
PA-23-250
Fixed-wing, multi-engine Light & Variable LLC
Arlington, Virginia
Standard 2022-01-10 ValidFAA registration status code V: Valid registration. All codes
N500FT Aero Commander
500-B
Fixed-wing, multi-engine Twin Aviation LLC
Coushatta, Louisiana
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N649T Cessna
182S
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N800JF Fray Jerry D
F1 ROCKET
Fixed-wing, single engine Individual owner
Utah
Experimental 2022-01-07 ValidFAA registration status code V: Valid registration. All codes
N235ME Cessna
182S
Fixed-wing, single engine Withheld at owner's request
Standard 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N43GA Robinson Helicopter
R44 II
Helicopter Crosswind Leasing LLC
Prescott, Arizona
Standard 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N83612 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-01-05 ValidFAA registration status code V: Valid registration. All codes
N184KM Hood Bradley C
VANS RV-8
Fixed-wing, single engine Cleared Direct LLC
Kalispell, Montana
Experimental 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N2351E Cessna
182T
Fixed-wing, single engine Hog Aviation LLC
Fort Smith, Arkansas
Standard 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N865PB Robinson Helicopter
R44 II
Helicopter Anthelian Helcopters
Long Beach, California
Standard 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N814WM Cessna
182S
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-12-22 ValidFAA registration status code V: Valid registration. All codes
N106MR Piper
PA-32-301
Fixed-wing, single engine Island Flights INC
Wilmington, Delaware
Standard 2021-12-20 ValidFAA registration status code V: Valid registration. All codes
N247SA Cessna
206H
Fixed-wing, single engine Ross Branta Enterprises
Boise, Idaho
Standard 2021-12-20 ValidFAA registration status code V: Valid registration. All codes
N613RB Aerofab Inc
LAKE LA-250
Fixed-wing, single engine Fly Amphibious Aircraft LLC
Tampa, Florida
None on file 2021-12-20 ValidFAA registration status code V: Valid registration. All codes
N545WH Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Arkansas
Standard 2021-12-17 ValidFAA registration status code V: Valid registration. All codes
N134CP Maule
MT-7-235
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-12-16 ValidFAA registration status code V: Valid registration. All codes
N235ES Maule
MT-7-235
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2021-12-16 ValidFAA registration status code V: Valid registration. All codes
N3737M Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
California
Standard 2021-12-16 ValidFAA registration status code V: Valid registration. All codes
N12NM Mangold Michael E
MANGOLD EDGE 540K
Fixed-wing, single engine Plane Fun INC Tr Trustee
Snellville, Georgia
Experimental 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N100PB Piper
AEROSTAR 601P
Fixed-wing, multi-engine Doobie Air LLC
Wilmington, Delaware
Standard 2021-12-14 ValidFAA registration status code V: Valid registration. All codes
N7278S Cessna
182S
Fixed-wing, single engine Engineers Flying Club INC
Bethany, Oklahoma
Standard 2021-12-14 ValidFAA registration status code V: Valid registration. All codes
N69FL Piper
PA-23-250
Fixed-wing, multi-engine Flx Holding CO LLC
Boca Raton, Florida
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N8079J Piper
AEROSTAR 600
Fixed-wing, multi-engine Td Aviation LLC
Canton, Georgia
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N998TM Esterhuizen Mark
F1 ROCKET
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Experimental 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N984PD Cessna
182S
Fixed-wing, single engine Legends Air Center LLC
Bentonville, Arkansas
Standard 2021-12-11 ValidFAA registration status code V: Valid registration. All codes
N233DC Cessna
182S
Fixed-wing, single engine Mc Aviation Holdings LLC
Miami, Florida
Standard 2021-12-10 ValidFAA registration status code V: Valid registration. All codes
N311DR Socata
TB-20 TRINIDAD
Fixed-wing, single engine 7427 Aviation LLC
Clovis, California
Standard 2021-12-09 ValidFAA registration status code V: Valid registration. All codes
N81TR Irving Steven
IRBD-4
Fixed-wing, single engine Individual owner
Montana
Experimental 2021-12-09 ValidFAA registration status code V: Valid registration. All codes
N8843Y Piper
PA-32R-301
Fixed-wing, single engine Bw Aviation LLC
Wilmington, Delaware
Standard 2021-12-07 ValidFAA registration status code V: Valid registration. All codes
N21DP Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-11-30 ValidFAA registration status code V: Valid registration. All codes
N344CF Robinson Helicopter
R44 II
Helicopter Key West Helicopters LLC
Key West, Florida
Standard 2021-11-30 ValidFAA registration status code V: Valid registration. All codes
N709DB Cessna
182T
Fixed-wing, single engine Powerhouse Detox INC
Otis, Oregon
Standard 2021-11-20 ValidFAA registration status code V: Valid registration. All codes
N8094A Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-11-20 ValidFAA registration status code V: Valid registration. All codes
N555CZ Cessna
182S
Fixed-wing, single engine Greenlawn Realty CO INC
Columbus, Ohio
Standard 2021-11-19 ValidFAA registration status code V: Valid registration. All codes
N36546 Piper
PA-32RT-300
Fixed-wing, single engine Lighthouse Drones LLC
New Smyrna Beach, Florida
Standard 2021-11-17 ValidFAA registration status code V: Valid registration. All codes
N45FW Piper
PA-32R-301
Fixed-wing, single engine Bleuggs Aviation LLC
Lewes, Delaware
Standard 2021-11-16 ValidFAA registration status code V: Valid registration. All codes
N781GH Piper
PA-32RT-300
Fixed-wing, single engine John Stuart LLC
Miramar, Florida
Standard 2021-11-16 ValidFAA registration status code V: Valid registration. All codes
N707JW Piper
PA-32RT-300
Fixed-wing, single engine Island Aviation LLC
Fleming Island, Florida
Standard 2021-11-13 ValidFAA registration status code V: Valid registration. All codes
N3575A Piper
PA-32R-301
Fixed-wing, single engine Scoval Aviation LLC
Murray, Kentucky
Standard 2021-11-08 ValidFAA registration status code V: Valid registration. All codes
N184KW Spaur Charles W
VAN'S RV-10
Fixed-wing, single engine Individual owner
Washington
Experimental 2021-11-05 ValidFAA registration status code V: Valid registration. All codes
N28079 Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-11-05 ValidFAA registration status code V: Valid registration. All codes
N417P Piper
PA-32R-300
Fixed-wing, single engine Saltwater Aviation INC
Tampa, Florida
Standard 2021-11-05 ValidFAA registration status code V: Valid registration. All codes
N56491 Maule
M-6-235
Fixed-wing, single engine Withheld at owner's request
Standard 2021-11-05 ValidFAA registration status code V: Valid registration. All codes
N137N Piper
AEROSTAR 601P
Fixed-wing, multi-engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2021-11-04 ValidFAA registration status code V: Valid registration. All codes
N30005 Piper
PA-32RT-300
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2021-11-04 ValidFAA registration status code V: Valid registration. All codes
N9224N Piper
PA-32R-301
Fixed-wing, single engine Blanchard Aviation LLC
Nazareth, Pennsylvania
Standard 2021-11-03 ValidFAA registration status code V: Valid registration. All codes
N144CN Piper
PA-23-250
Fixed-wing, multi-engine Galliot Bond LLC
Atlanta, Georgia
Standard 2021-11-01 ValidFAA registration status code V: Valid registration. All codes
N110U Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-10-30 ValidFAA registration status code V: Valid registration. All codes
N6033A Commander Aircraft Co
114-B
Fixed-wing, single engine 3V Global LLC
Clermont, Georgia
Standard 2021-10-29 ValidFAA registration status code V: Valid registration. All codes
N700GP Piper
AEROSTAR 602P
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2021-10-29 ValidFAA registration status code V: Valid registration. All codes
N53310 Cessna
182T
Fixed-wing, single engine Individual owner
Florida
Standard 2021-10-27 ValidFAA registration status code V: Valid registration. All codes
N597DC James D Clark
PATRIOT 300 II
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-10-25 ValidFAA registration status code V: Valid registration. All codes
N6033G Commander Aircraft Co
114-B
Fixed-wing, single engine Viking Ball LLC
Wilmington, Delaware
Standard 2021-10-25 ValidFAA registration status code V: Valid registration. All codes
N31916 Piper
PA-32-300
Fixed-wing, single engine
Standard 2021-10-18 ValidFAA registration status code V: Valid registration. All codes
N632LL Cessna
182S
Fixed-wing, single engine Individual owner
California
Standard 2021-10-15 ValidFAA registration status code V: Valid registration. All codes
N398ME Cessna
182S
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2021-10-14 ValidFAA registration status code V: Valid registration. All codes
N49MG Piper
AEROSTAR 600
Fixed-wing, multi-engine Castle Aviation INC
North Canton, Ohio
Standard 2021-10-14 ValidFAA registration status code V: Valid registration. All codes
N978RS Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Texas
Standard 2021-10-14 ValidFAA registration status code V: Valid registration. All codes
N5360K Piper
PA-32R-301
Fixed-wing, single engine N5360K LLC
Lebanon, Missouri
Standard 2021-10-13 ValidFAA registration status code V: Valid registration. All codes
N59669 Piper
PA-36-300
Fixed-wing, single engine Individual owner
Virginia
Restricted 2021-10-07 ValidFAA registration status code V: Valid registration. All codes
N442SH Robinson Helicopter
R44 II
Helicopter Individual owner
Colorado
Standard 2021-10-06 ValidFAA registration status code V: Valid registration. All codes
N237ME Cessna
182S
Fixed-wing, single engine Westbank Fishing LLC
Kiln, Mississippi
Standard 2021-10-05 ValidFAA registration status code V: Valid registration. All codes
N442E Piper
PA-32R-301
Fixed-wing, single engine D&S Aviation LLC
Yakima, Washington
Standard 2021-10-05 ValidFAA registration status code V: Valid registration. All codes
N48DF Fuhrman Dennis M
VANS RV-10
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2021-10-05 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.