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
N78GP Sterling Robert
4P
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-05-22 ValidFAA registration status code V: Valid registration. All codes
N864P Clinton Peter C
SKYBOLT 2 PC
Fixed-wing, single engine As6 Aero LLC
Kalispell, Montana
Experimental 2024-05-21 ValidFAA registration status code V: Valid registration. All codes
N592JS Cessna
182T
Fixed-wing, single engine Individual owner
New Jersey
Standard 2024-05-20 ValidFAA registration status code V: Valid registration. All codes
N7157B Cessna
182S
Fixed-wing, single engine Owyhee Aviation LLC
Provo, Utah
Standard 2024-05-20 ValidFAA registration status code V: Valid registration. All codes
N770AS Maule
M-7-235
Fixed-wing, single engine Tyrrells Trails LLC
Fairbanks, Alaska
Standard 2024-05-20 ValidFAA registration status code V: Valid registration. All codes
N81PK Piper
PA-32R-301
Fixed-wing, single engine Tier-1 Helicopters LLC
Hampton, Georgia
Standard 2024-05-18 ValidFAA registration status code V: Valid registration. All codes
N975AA Aero Commander
500 S
Fixed-wing, multi-engine Emez Holdings LLC
Boca Raton, Florida
Standard 2024-05-18 ValidFAA registration status code V: Valid registration. All codes
N2133L Cessna
182T
Fixed-wing, single engine Individual owner
Washington
Standard 2024-05-17 ValidFAA registration status code V: Valid registration. All codes
N89BS Piper
PA-32-300
Fixed-wing, single engine Halbert Consulting LLC
Enoree, South Carolina
Standard 2024-05-17 ValidFAA registration status code V: Valid registration. All codes
N41TB Socata
TB-20 TRINIDAD
Fixed-wing, single engine Marikan LLC
Strongsville, Ohio
Standard 2024-05-15 ValidFAA registration status code V: Valid registration. All codes
N1425K Robinson Helicopter
R44 II
Helicopter Topaircraft Classic Wings Holding LLC
Eureka, Missouri
Standard 2024-05-14 ValidFAA registration status code V: Valid registration. All codes
N325CA Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-05-14 ValidFAA registration status code V: Valid registration. All codes
N1424C Cessna
182T
Fixed-wing, single engine Glendoe INC Trustee
Wilmington, Delaware
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N206KT Featherston Les W
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N277TC Cessna
206H
Fixed-wing, single engine Translift INC
Holly, Michigan
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N51732 Cessna
182T
Fixed-wing, single engine Imsar LLC
Springville, Utah
Standard 2024-05-13 ValidFAA registration status code V: Valid registration. All codes
N82TT Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-05-11 ValidFAA registration status code V: Valid registration. All codes
N658CP Cessna
182T
Fixed-wing, single engine Arizona Air Salvage
Phoenix, Arizona
Standard 2024-05-10 ValidFAA registration status code V: Valid registration. All codes
N38TB Socata
TB-20 TRINIDAD
Fixed-wing, single engine Drier Properties LLC
Gillett, Arkansas
Standard 2024-05-08 ValidFAA registration status code V: Valid registration. All codes
N330TA Wingtip To Wingtip Inc
PANZL S-330
Fixed-wing, single engine Advanced Aerobatics LLC
Ocala, Florida
Experimental 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N38MK Kasyan Michael
BERKUT 540
Fixed-wing, single engine Individual owner
California
Experimental 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N505VC Piper
AEROSTAR 601
Fixed-wing, multi-engine Individual owner
Texas
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N7518D Robinson Helicopter
R44 II
Helicopter Eros Aviation Ventures LLC
Oakland Park, Florida
Standard 2024-05-07 ValidFAA registration status code V: Valid registration. All codes
N29170 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N668MA Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-05-06 ValidFAA registration status code V: Valid registration. All codes
N65225 Cessna
182T
Fixed-wing, single engine Individual owner
Florida
Standard 2024-05-04 ValidFAA registration status code V: Valid registration. All codes
N5859N Rockwell International
114
Fixed-wing, single engine Pegasus Flight LLC
Carbondale, Illinois
Standard 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N66EG Christopher R/Moore A
SKYBOLT
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-05-03 ValidFAA registration status code V: Valid registration. All codes
N444VC Cessna
182S
Fixed-wing, single engine Ga Flying LLC
Jupiter, Florida
Standard 2024-05-02 ValidFAA registration status code V: Valid registration. All codes
N188AG Cessna
T206H
Fixed-wing, single engine Rvest Management LLC
Boulder City, Nevada
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N1995B Cessna
182T
Fixed-wing, single engine N2Jz LLC
Amarillo, Texas
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N21D Smith
AEROSTAR 601P
Fixed-wing, multi-engine Bits Real Estate LLC
Foster City, California
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N2DX Piper
AEROSTAR 601P
Fixed-wing, multi-engine Law Coaching International
Irvine, California
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N965CW Cessna
182S
Fixed-wing, single engine Air Capital Aviators Club
Wichita, Kansas
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N126SC Mooney
M20M
Fixed-wing, single engine Driven Design Studio Pllc
Battle Creek, Michigan
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N30498 Piper
PA-32RT-300
Fixed-wing, single engine Rle Aviation LLC
Providence, Kentucky
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N4007S Cessna
182S
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N444SW Sna Inc
SEAWIND 3000
Fixed-wing, single engine Chimisa Aviation LLC
Lake City, Florida
Experimental 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N58CR Cessna
182T
Fixed-wing, single engine 7192 Locke Road LLC
Millington, Tennessee
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N165PT Robinson Helicopter
R44 II
Helicopter November Alpha LLC
Dover, Delaware
Standard 2024-04-29 ValidFAA registration status code V: Valid registration. All codes
N3559U Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Texas
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N68SD Piper
PA-32-300
Fixed-wing, single engine Pro Aero LLC
Warrenton, Virginia
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N554 Socata
TB-20 TRINIDAD
Fixed-wing, single engine Valiair Lc Trustee
Casper, Wyoming
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N637AK Robinson Helicopter
R44 II
Helicopter R44 Leasing LLC
Dover, Delaware
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N974PC Cessna
182S
Fixed-wing, single engine Montana Bizjets LLC
Missoula, Montana
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N267ME Cessna
182S
Fixed-wing, single engine Cape Aero LLC
Cape Girardeau, Missouri
Standard 2024-04-24 ValidFAA registration status code V: Valid registration. All codes
N38368 Piper
PA-32R-300
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N63983 Piper
PA-23-250
Fixed-wing, multi-engine N63983 LLC
Turton, South Dakota
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N319SF Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
California
Standard 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N1992D Cessna
182T
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-04-16 ValidFAA registration status code V: Valid registration. All codes
N571WC Robinson Helicopter
R44 II
Helicopter Individual owner
Alaska
Standard 2024-04-16 ValidFAA registration status code V: Valid registration. All codes
N5194N Cessna
206H
Fixed-wing, single engine Andros Aviation LLC
Santa Margarita, California
Standard 2024-04-13 ValidFAA registration status code V: Valid registration. All codes
N81006 Piper
PA-32R-301
Fixed-wing, single engine Wicked Wings LLC
Norwood, North Carolina
Standard 2024-04-13 ValidFAA registration status code V: Valid registration. All codes
N813PK Cessna
182S
Fixed-wing, single engine N813Pk LLC
Columbia, Missouri
Standard 2024-04-13 ValidFAA registration status code V: Valid registration. All codes
N4336G Piper
PA-32R-301
Fixed-wing, single engine In the Air Tonight LLC
Strasburg, Ohio
Standard 2024-04-12 ValidFAA registration status code V: Valid registration. All codes
N501LF Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-04-12 ValidFAA registration status code V: Valid registration. All codes
N71CL Piper
AEROSTAR 600
Fixed-wing, multi-engine Individual owner
Texas
Standard 2024-04-12 ValidFAA registration status code V: Valid registration. All codes
N36194 Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-04-11 ValidFAA registration status code V: Valid registration. All codes
N337BM Cessna
182S
Fixed-wing, single engine Sky Drivers LLC
La Fayette, Georgia
Standard 2024-04-09 ValidFAA registration status code V: Valid registration. All codes
N9087V Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2024-04-09 ValidFAA registration status code V: Valid registration. All codes
N8202E Piper
PA-32R-301
Fixed-wing, single engine Withheld at owner's request
Standard 2024-04-08 ValidFAA registration status code V: Valid registration. All codes
N5225L Cessna
182T
Fixed-wing, single engine First Aero LLC
Edmonds, Washington
Standard 2024-04-06 ValidFAA registration status code V: Valid registration. All codes
N122AA Robinson Helicopter
R44 II
Helicopter Cnt Aviation LLC
Lake Tapps, Washington
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N232HE Robinson Helicopter
R44 II
Helicopter Individual owner
Montana
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N3314S Cessna
182S
Fixed-wing, single engine N3314S LLC
Oklahoma City, Oklahoma
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N3566P Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N40KP Maule
M-7-260C
Fixed-wing, single engine Zoie Air LLC
Fort Lauderdale, Florida
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N8281Y Piper
PA-32-301
Fixed-wing, single engine Reined Out LLC
Nantucket, Massachusetts
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N242MG Robinson Helicopter
R44 II
Helicopter Helo 1 LLC
Anchorage, Alaska
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N5643N Maule
M-5-235C
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N320JL Piper
PA-24-260
Fixed-wing, single engine Inspired Oasis LLC
Salem, Oregon
Standard 2024-03-31 ValidFAA registration status code V: Valid registration. All codes
N44SK Robinson Helicopter
R44 II
Helicopter Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N888HA Robinson Helicopter
R44 II
Helicopter Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N923JF Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Jf Aerosports LLC
Vineland, New Jersey
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N8004N Piper
PA-32-301
Fixed-wing, single engine High Noon Leasing LLC
Anchorage, Alaska
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N73MM Matthews W P/Mullins J W
HARMON ROCKET II
Fixed-wing, single engine Puddle Jumper Aviation LLC
Brighton, Colorado
Experimental 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N31BR Stoddard-Hamilton/Steuble R H
GLASAIR III SH3R
Fixed-wing, single engine 87 Enterprises LLC
Genoa, Nevada
Experimental 2024-03-26 ValidFAA registration status code V: Valid registration. All codes
N206TJ Robinson Helicopter
R44 II
Helicopter Sky Solutions LLC
Detroit, Michigan
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N111HY Commander Aircraft Co
114-B
Fixed-wing, single engine Sch Aviation INC Trustee
Norfolk,
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N8096S Piper
PA-32R-301
Fixed-wing, single engine Freedom Aircraft Jv 1 LLC
Milton, Florida
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N8354Y Piper
PA-32-301
Fixed-wing, single engine Individual owner
Florida
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N8WH Cessna
182T
Fixed-wing, single engine Garrett AG Equipment LTD
Danbury, Texas
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N57RK Piper
PA32-301FT
Fixed-wing, single engine N57Rk LLC
Rockwell, North Carolina
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N37RK Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-03-15 ValidFAA registration status code V: Valid registration. All codes
N526AP Paxhia Alan J
MURPHY SR3500
Fixed-wing, single engine Atlas Casters LLC
Ashland, Oregon
Experimental 2024-03-14 ValidFAA registration status code V: Valid registration. All codes
N242HR Martin Tom
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Florida
Experimental 2024-03-13 ValidFAA registration status code V: Valid registration. All codes
N299HC Howard D Cammack
SKYBOLT
Fixed-wing, single engine Individual owner
Colorado
Experimental 2024-03-13 ValidFAA registration status code V: Valid registration. All codes
N6890L Piper
AEROSTAR 601
Fixed-wing, multi-engine Top Tier Truck and Trailer LLC
Dimmitt, Texas
Standard 2024-03-13 ValidFAA registration status code V: Valid registration. All codes
N728RT Piper Aircraft Corporation
PA-60-601P
Fixed-wing, multi-engine Individual owner
Texas
Standard 2024-03-13 ValidFAA registration status code V: Valid registration. All codes
N628 Carlisle John W
COMPAIR 6
Fixed-wing, single engine Individual owner
Illinois
Experimental 2024-03-11 ValidFAA registration status code V: Valid registration. All codes
N340HP Cessna
182S
Fixed-wing, single engine Beartooth Aviation LLC
Kalispell, Montana
Standard 2024-03-09 ValidFAA registration status code V: Valid registration. All codes
N680K Piper
PA-23-250
Fixed-wing, multi-engine Talos Aviation Group LLC
Blackstone, Virginia
Standard 2024-03-08 ValidFAA registration status code V: Valid registration. All codes
N95TK Piper
PA-23-250
Fixed-wing, multi-engine Talos Aviation Group LLC
Blackstone, Virginia
Standard 2024-03-08 ValidFAA registration status code V: Valid registration. All codes
N7534D Robinson Helicopter
R44 II
Helicopter Tamiry Aviation LLC
Wilmington, Delaware
Standard 2024-03-07 ValidFAA registration status code V: Valid registration. All codes
N257AE Cessna
182S
Fixed-wing, single engine Bhm Kcak LLC
Akron, Ohio
Standard 2024-03-06 ValidFAA registration status code V: Valid registration. All codes
N252CW Staudacher Aircraft Inc
S600 F
Fixed-wing, single engine Individual owner
District of Columbia
Experimental 2024-03-05 ValidFAA registration status code V: Valid registration. All codes
N5467C Cessna
182S
Fixed-wing, single engine Steamboat Springs Flying Club INC
Steamboat Springs, Colorado
Standard 2024-03-04 ValidFAA registration status code V: Valid registration. All codes
N551ZL Harris Pierce
VELOCITY XL RG
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2024-03-04 ValidFAA registration status code V: Valid registration. All codes
N999WG Aerofab Inc
LAKE LA-4-250
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-03-04 ValidFAA registration status code V: Valid registration. All codes
N820BT Cessna
182T
Fixed-wing, single engine Jjsap Holdings LLC
Kalispell, Montana
Standard 2024-02-29 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.