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
N2530W Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Maryland
Standard 2018-01-08 ValidFAA registration status code V: Valid registration. All codes
N51TB Socata
TB-20 TRINIDAD
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2018-01-08 ValidFAA registration status code V: Valid registration. All codes
N11UZ Piper
PA-32R-301
Fixed-wing, single engine Eastern Stearman INC Trustee
Leesburg, Virginia
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N146MB Piper
PA-32-300
Fixed-wing, single engine Mlc Flying Club LLC
Saint Peters, Missouri
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N51EP Piper
PA-60-602P
Fixed-wing, multi-engine Esa Montana LLC
Boulder, Colorado
Standard 2018-01-04 ValidFAA registration status code V: Valid registration. All codes
N251TT Maule
M-7-235C
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-01-03 ValidFAA registration status code V: Valid registration. All codes
N823DK Iar Sa Brasov
IAR 823
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2018-01-02 ValidFAA registration status code V: Valid registration. All codes
N2368S Cessna
182S
Fixed-wing, single engine Shane LLC
Wilmington, Delaware
Standard 2017-12-29 ValidFAA registration status code V: Valid registration. All codes
N82KC Cessna
182S
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2017-12-28 ValidFAA registration status code V: Valid registration. All codes
N14PE Etzelmiller Phil R
GLASSAIR III
Fixed-wing, single engine 14Pe LLC
Omaha, Nebraska
Experimental 2017-12-27 ValidFAA registration status code V: Valid registration. All codes
N22419 Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N9267R Piper
PA-32R-301
Fixed-wing, single engine N9267R LLC
Pittstown, New Jersey
Standard 2017-12-21 ValidFAA registration status code V: Valid registration. All codes
N3524F Cessna
182T
Fixed-wing, single engine
Standard 2017-12-20 ValidFAA registration status code V: Valid registration. All codes
N636GT Socata
TB-20 TRINIDAD
Fixed-wing, single engine Sky Blue Aero LLC
Huntersville, North Carolina
Standard 2017-12-20 ValidFAA registration status code V: Valid registration. All codes
N2532D Socata
TB-20 TRINIDAD
Fixed-wing, single engine Co-owned owner
California
Standard 2017-12-13 ValidFAA registration status code V: Valid registration. All codes
N559MA Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2017-12-12 ValidFAA registration status code V: Valid registration. All codes
N748BP Robinson Helicopter
R44 II
Helicopter Individual owner
Iowa
Standard 2017-12-05 ValidFAA registration status code V: Valid registration. All codes
N235CW Maule
MT-7-235
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-12-04 ValidFAA registration status code V: Valid registration. All codes
N442KP Robinson Helicopter
R44 II
Helicopter Utah State University
Logan, Utah
Standard 2017-12-04 ValidFAA registration status code V: Valid registration. All codes
N110SX Robinson Helicopter
R44 II
Helicopter Skyryse INC
El Segundo, California
Experimental 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N128DH Maule
MT-7-235
Fixed-wing, single engine Co-owned owner
Florida
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N13WR Piper
PA-32R-301
Fixed-wing, single engine Billys Blessing LLC
Louisburg, North Carolina
Standard 2017-11-30 ValidFAA registration status code V: Valid registration. All codes
N2731Y Cessna
182T
Fixed-wing, single engine Georgia Forestry Commission
Macon, Georgia
Standard 2017-11-27 ValidFAA registration status code V: Valid registration. All codes
N2843M Piper
PA-32-300
Fixed-wing, single engine Car Store INC
Honolulu, Hawaii
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N392ME Cessna
182S
Fixed-wing, single engine Frees Media INC
Livingston, New Jersey
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N703MA Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2017-11-20 ValidFAA registration status code V: Valid registration. All codes
N49SF Piper
PA-32-300
Fixed-wing, single engine Bcr Aviation LLC
Chantilly, Virginia
Standard 2017-11-16 ValidFAA registration status code V: Valid registration. All codes
N56515 Maule
M-6-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-11-15 ValidFAA registration status code V: Valid registration. All codes
N1866S Socata
TB-20 TRINIDAD
Fixed-wing, single engine Aviation Addiction LLC
Fishers, Indiana
Standard 2017-11-14 ValidFAA registration status code V: Valid registration. All codes
N31BK Piper
PA-32R-300
Fixed-wing, single engine Individual owner
South Carolina
Standard 2017-11-08 ValidFAA registration status code V: Valid registration. All codes
N524G Atkin William F
HARMON ROCKET II
Fixed-wing, single engine Kbeh Hangar Flyers LLC
Bridgman, Michigan
Experimental 2017-11-06 ValidFAA registration status code V: Valid registration. All codes
N20SN Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-11-03 ValidFAA registration status code V: Valid registration. All codes
N464JS Smith Stuart T
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Texas
Experimental 2017-11-02 ValidFAA registration status code V: Valid registration. All codes
N441TH Robinson Helicopter
R44 II
Helicopter Individual owner
Montana
Standard 2017-10-27 ValidFAA registration status code V: Valid registration. All codes
N31661 Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
California
Standard 2017-10-25 ValidFAA registration status code V: Valid registration. All codes
N56463 Maule
M-6-235
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2017-10-17 ValidFAA registration status code V: Valid registration. All codes
N203DM Piper
PA-23-250
Fixed-wing, multi-engine Csc Delaware Trust CO Trustee
Wilmington, Delaware
Restricted 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N415CC Piper
PA-23-250
Fixed-wing, multi-engine Csc Delaware Trust CO Trustee
Wilmington, Delaware
Restricted 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N46RR Piper
PA-32-301
Fixed-wing, single engine Ama Aviation LLC
Dover, Pennsylvania
Standard 2017-10-16 ValidFAA registration status code V: Valid registration. All codes
N38ZT Maule
M-7-260
Fixed-wing, single engine Clemente Motor INC
Troy, New York
Standard 2017-10-03 ValidFAA registration status code V: Valid registration. All codes
N8499F Piper
PA-32R-300
Fixed-wing, single engine Arrow INC
Rockford, Michigan
Standard 2017-09-29 ValidFAA registration status code V: Valid registration. All codes
N6853Z Piper
PA-25-235
Fixed-wing, single engine Christian Aviation LLC
Pearland, Texas
Restricted 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N926G Chan Chui S
RV-10
Fixed-wing, single engine G2 Aviation LLC
Franklin, Wisconsin
Experimental 2017-09-28 ValidFAA registration status code V: Valid registration. All codes
N36262 Piper
PA-32RT-300
Fixed-wing, single engine Exodus Aviators INC
Cedar Park, Texas
Standard 2017-09-27 ValidFAA registration status code V: Valid registration. All codes
N42MA Morgan David W
GLASAIR III
Fixed-wing, single engine Simply Living LLC
Fort Myers, Florida
Experimental 2017-09-25 ValidFAA registration status code V: Valid registration. All codes
N150CP Chris Nelson
RV-10
Fixed-wing, single engine Individual owner
South Dakota
Experimental 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N8310H Piper
PA-32-301
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-09-20 ValidFAA registration status code V: Valid registration. All codes
N51782 Cessna
182T
Fixed-wing, single engine Ranger Lumber CORP
Springfield, Massachusetts
Standard 2017-09-18 ValidFAA registration status code V: Valid registration. All codes
N39626 Piper
PA-32-300
Fixed-wing, single engine Drm Air Group INC
Lewes, Delaware
Standard 2017-09-14 ValidFAA registration status code V: Valid registration. All codes
N6077Y Piper
AEROSTAR 601P
Fixed-wing, multi-engine Greenair CORP
Memphis, Tennessee
Standard 2017-09-12 ValidFAA registration status code V: Valid registration. All codes
N510TR Cessna
182T
Fixed-wing, single engine Altamira Flying Club INC
Round Rock, Texas
Standard 2017-09-11 ValidFAA registration status code V: Valid registration. All codes
N2227F Cessna
182T
Fixed-wing, single engine Bay Area Aviation LLC
Beach City, Texas
Standard 2017-09-08 ValidFAA registration status code V: Valid registration. All codes
N61MG Piper
PA-23-250
Fixed-wing, multi-engine Dominion Air Charter INC
Louisa, Virginia
Standard 2017-09-05 ValidFAA registration status code V: Valid registration. All codes
N1176T Cessna
182T
Fixed-wing, single engine P C O Leasing INC
Dobbin, Texas
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N7278W Cessna
182S
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-31 ValidFAA registration status code V: Valid registration. All codes
N508CX Robinson Helicopter
R44 II
Helicopter Av8 Flight Assets LLC
Eden Prairie, Minnesota
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N56526 Maule
M-6-235
Fixed-wing, single engine Withheld at owner's request
Standard 2017-08-30 ValidFAA registration status code V: Valid registration. All codes
N8801X Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine Individual owner
Washington
Restricted 2017-08-29 ValidFAA registration status code V: Valid registration. All codes
N57VH Moscatiello
STARDUSTER TOO SA300
Fixed-wing, single engine Individual owner
Missouri
Experimental 2017-08-28 ValidFAA registration status code V: Valid registration. All codes
N440SH Robinson Helicopter
R44 II
Helicopter November Alpha LLC
Dover, Delaware
Standard 2017-08-25 ValidFAA registration status code V: Valid registration. All codes
N29AM Piper
PA-32R-301
Fixed-wing, single engine Skywave Aviation Partners LLC
Moultrie, Georgia
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N814CB Piper
PA-32R-301
Fixed-wing, single engine N814Cb LLC
Dover, Delaware
Standard 2017-08-23 ValidFAA registration status code V: Valid registration. All codes
N2512R Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-08-22 ValidFAA registration status code V: Valid registration. All codes
N321DK Cessna
182S
Fixed-wing, single engine Twi Air LLC
Picayune, Mississippi
Standard 2017-08-22 ValidFAA registration status code V: Valid registration. All codes
N44VF Ferrell B/Szoke E
FERRELL/SZOKE XL FG
Fixed-wing, single engine Co-owned owner
Ohio
Experimental 2017-08-22 ValidFAA registration status code V: Valid registration. All codes
N312BD Commander Aircraft Co
114-B
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N8912F Piper
PA-32R-300
Fixed-wing, single engine Individual owner
South Carolina
Standard 2017-08-15 ValidFAA registration status code V: Valid registration. All codes
N21454 Cessna
182T
Fixed-wing, single engine Textron Aviation INC
Wichita, Kansas
Standard 2017-08-14 ValidFAA registration status code V: Valid registration. All codes
N7267T Cessna
182S
Fixed-wing, single engine Dmcc LLC
Lewes, Delaware
Standard 2017-08-09 ValidFAA registration status code V: Valid registration. All codes
N65512 Cessna
182T
Fixed-wing, single engine Individual owner
Idaho
Standard 2017-08-08 ValidFAA registration status code V: Valid registration. All codes
N6106Y Maule
M-7-235A
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-08-07 ValidFAA registration status code V: Valid registration. All codes
N35HB Barr Harry
SX 300
Fixed-wing, single engine Downes Greg
Iowa City, Iowa
Experimental 2017-08-03 ValidFAA registration status code V: Valid registration. All codes
N8801E Eagle Aircraft Co.-Bellanca
EAGLE DW-1
Fixed-wing, single engine Individual owner
California
Restricted 2017-08-02 ValidFAA registration status code V: Valid registration. All codes
N44UK Robinson Helicopter
R44 II
Helicopter N44Uk Partners LLC
Burlington, Washington
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N63PV Piper
PA-32R-301
Fixed-wing, single engine Air Tech Flying Club INC
Chesterfield, Virginia
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N79AT Teulon A.P.
STEEN SKYBOLT
Fixed-wing, single engine Individual owner
Illinois
Experimental 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N341PC Cessna
182S
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-26 ValidFAA registration status code V: Valid registration. All codes
N83VV Lake Aircraft Inc
LA250
Fixed-wing, single engine Individual owner
California
Standard 2017-07-26 ValidFAA registration status code V: Valid registration. All codes
N2149D Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N2205U Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N2368G Cessna
182S
Fixed-wing, single engine Withheld at owner's request
Standard 2017-07-20 ValidFAA registration status code V: Valid registration. All codes
N715RC Cessna
182T
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-07-20 ValidFAA registration status code V: Valid registration. All codes
N4597P Piper
PA-23-250
Fixed-wing, multi-engine Gv Air INC
Medford, Oregon
Standard 2017-07-19 ValidFAA registration status code V: Valid registration. All codes
N71RZ Aviat Aircraft Inc
PITTS S-2B
Fixed-wing, single engine Co-owned owner
Connecticut
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N439ES Cessna
182S
Fixed-wing, single engine H R Management LLC
Bay Saint Louis, Mississippi
Standard 2017-07-10 ValidFAA registration status code V: Valid registration. All codes
N2182F Cessna
182T
Fixed-wing, single engine Kleen Sheen IV LLC
Bowling Green, Kentucky
Standard 2017-07-07 ValidFAA registration status code V: Valid registration. All codes
N23KA Ashby Kenny
GLASAIR III
Fixed-wing, single engine Individual owner
Utah
Experimental 2017-07-06 ValidFAA registration status code V: Valid registration. All codes
N2242Z Piper
PA-32-300
Fixed-wing, single engine N2242Z LLC
Newtown, Connecticut
Standard 2017-07-03 ValidFAA registration status code V: Valid registration. All codes
N9111G Piper
PA-32-301
Fixed-wing, single engine Maryland State Police
Baltimore, Maryland
Standard 2017-07-03 ValidFAA registration status code V: Valid registration. All codes
N462JB Cessna
182T
Fixed-wing, single engine Plane Nonsense INC
Middletown, Delaware
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N7CE Cessna
206H
Fixed-wing, single engine Individual owner
Washington
Standard 2017-06-27 ValidFAA registration status code V: Valid registration. All codes
N2103U Cessna
182T
Fixed-wing, single engine Individual owner
California
Standard 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N540ED Wheeler Technology Inc
WHEELER EXP FT200
Fixed-wing, single engine Individual owner
Washington
Experimental 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N9QY Rockwell International
500-S
Fixed-wing, multi-engine Amelia Air LLC
Naples, Florida
Standard 2017-06-20 ValidFAA registration status code V: Valid registration. All codes
N1821Z Cessna
T182T
Fixed-wing, single engine Individual owner
Kansas
Standard 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N410MW Ralph H Sandeford
RV10
Fixed-wing, single engine Individual owner
Georgia
Experimental 2017-06-19 ValidFAA registration status code V: Valid registration. All codes
N1737S Cessna
182S
Fixed-wing, single engine Tms Aviation INC
Wilmington, Delaware
Standard 2017-06-15 ValidFAA registration status code V: Valid registration. All codes
N544DL Robinson Helicopter
R44 II
Helicopter Co-owned owner
California
Standard 2017-06-13 ValidFAA registration status code V: Valid registration. All codes
N8019J Smith
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2017-06-13 ValidFAA registration status code V: Valid registration. All codes
N2682C Cessna
182T
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2017-06-09 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.