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
N300WE Piper
PA-32RT-300
Fixed-wing, single engine K & S Aero LLC
West Chester, Pennsylvania
Standard 2015-12-19 ValidFAA registration status code V: Valid registration. All codes
N4244L Maule
M-7-235C
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2015-12-19 ValidFAA registration status code V: Valid registration. All codes
N96ML Piper
PA-32-300
Fixed-wing, single engine M & M Aero LLC
Wilmington, Delaware
Standard 2015-12-19 ValidFAA registration status code V: Valid registration. All codes
N46VT Frank Dombroski
VANS RV-10
Fixed-wing, single engine Ph Aviation INC
Lewes, Delaware
Experimental 2015-12-12 ValidFAA registration status code V: Valid registration. All codes
N9176N Piper
PA-32R-301
Fixed-wing, single engine Wjr Aviation INC
Caledonia, Michigan
Standard 2015-12-12 ValidFAA registration status code V: Valid registration. All codes
N505SB Elliott Kirby
RV-10
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2015-12-11 ValidFAA registration status code V: Valid registration. All codes
N4147N Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2015-12-04 ValidFAA registration status code V: Valid registration. All codes
N749TW Robinson Helicopter
R44 II
Helicopter Tumbleweed Leasing CO INC
Salt Lake City, Utah
Standard 2015-12-03 ValidFAA registration status code V: Valid registration. All codes
N79NC Piper
PA-32-300
Fixed-wing, single engine Liam Clerkin INC
Wilmington, Delaware
Standard 2015-12-03 ValidFAA registration status code V: Valid registration. All codes
N9274Q Piper
PA-32R-301
Fixed-wing, single engine Ten Hi Flyers INC
Denver, Colorado
Standard 2015-12-01 ValidFAA registration status code V: Valid registration. All codes
N918MY Cessna
182T
Fixed-wing, single engine Flying Pigs LLC
Tulsa, Oklahoma
Standard 2015-11-23 ValidFAA registration status code V: Valid registration. All codes
N2187U Piper
PA-32-300
Fixed-wing, single engine Individual owner
Kentucky
Standard 2015-11-20 ValidFAA registration status code V: Valid registration. All codes
N5652N Maule
M-6-235
Fixed-wing, single engine Maule Airways INC Trustee
Wilmington, Delaware
Standard 2015-11-19 ValidFAA registration status code V: Valid registration. All codes
N84AV Socata
TB-20 TRINIDAD
Fixed-wing, single engine Syracuse Flying Club INC
Fayetteville, New York
Standard 2015-10-23 ValidFAA registration status code V: Valid registration. All codes
N182AM Cessna
182S
Fixed-wing, single engine Co-owned owner
New York
Standard 2015-10-22 ValidFAA registration status code V: Valid registration. All codes
N120G Maule
M-7-235B
Fixed-wing, single engine Bug Air LLC
Anchorage, Alaska
Standard 2015-10-20 ValidFAA registration status code V: Valid registration. All codes
N433DE Robinson Helicopter
R44 II
Helicopter Independent Helicopters LLC
New Windsor, New York
Standard 2015-10-15 ValidFAA registration status code V: Valid registration. All codes
N40592 Piper
PA-23-250
Fixed-wing, multi-engine Rml Aircraft INC
Staunton, Virginia
Standard 2015-10-06 ValidFAA registration status code V: Valid registration. All codes
N84SS Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2015-10-05 ValidFAA registration status code V: Valid registration. All codes
N945PD Cessna
182T
Fixed-wing, single engine Individual owner
California
Standard 2015-09-30 ValidFAA registration status code V: Valid registration. All codes
N235AK Maule
M-6-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-09-28 ValidFAA registration status code V: Valid registration. All codes
N9539D Cessna
182S
Fixed-wing, single engine Bohemia Aviation LLC
Niagara, Wisconsin
Standard 2015-09-28 ValidFAA registration status code V: Valid registration. All codes
N8412P Piper
PA-32-301
Fixed-wing, single engine Coastal Air LLC
Naknek, Alaska
Standard 2015-09-25 ValidFAA registration status code V: Valid registration. All codes
N963TB Rockwell International
114
Fixed-wing, single engine Individual owner
California
Standard 2015-09-25 ValidFAA registration status code V: Valid registration. All codes
N32RW Piper
PA-23-250
Fixed-wing, multi-engine Skylens LLC
Hammond, Louisiana
Standard 2015-09-23 ValidFAA registration status code V: Valid registration. All codes
N5650W Maule
M-6-235
Fixed-wing, single engine Rwk LLC
Anchorage, Alaska
Standard 2015-09-23 ValidFAA registration status code V: Valid registration. All codes
N114AN Rockwell International
114
Fixed-wing, single engine Individual owner
Virginia
Standard 2015-09-18 ValidFAA registration status code V: Valid registration. All codes
N175RV Robinson Helicopter
R44 II
Helicopter Wings Air Helicopters LLC
West Harrison, New York
Standard 2015-09-16 ValidFAA registration status code V: Valid registration. All codes
N93MG Piper
AEROSTAR 600
Fixed-wing, multi-engine Castle Aviation INC
North Canton, Ohio
Standard 2015-09-16 ValidFAA registration status code V: Valid registration. All codes
N349SB Piper
PA-32R-300
Fixed-wing, single engine Skyfusion II LLC
Atlanta, Georgia
Standard 2015-09-08 ValidFAA registration status code V: Valid registration. All codes
N632ES Cessna
182T
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2015-09-08 ValidFAA registration status code V: Valid registration. All codes
N515AK Maule
M-7-235B
Fixed-wing, single engine High Mark Aviation LLC
Enid, Oklahoma
Standard 2015-09-04 ValidFAA registration status code V: Valid registration. All codes
N56JD Norton-Huffman
SKYBOLT
Fixed-wing, single engine Individual owner
Colorado
Experimental 2015-08-31 ValidFAA registration status code V: Valid registration. All codes
N78WB Buethe-William
BARRACUDA
Fixed-wing, single engine Individual owner
Idaho
Experimental 2015-08-28 ValidFAA registration status code V: Valid registration. All codes
N8214B Piper
PA-32-301
Fixed-wing, single engine Daas Company INC
El Centro, California
Standard 2015-08-26 ValidFAA registration status code V: Valid registration. All codes
N144DM Robinson Helicopter
R44 II
Helicopter Executive Helicopters INC
Myrtle Beach, South Carolina
Standard 2015-08-19 ValidFAA registration status code V: Valid registration. All codes
N171CK Mcmullen Kelly A
RV-10
Fixed-wing, multi-engine Co-owned owner
Arizona
Experimental 2015-08-19 ValidFAA registration status code V: Valid registration. All codes
N92MG Smith
AEROSTAR 600
Fixed-wing, multi-engine Castle Aviation INC
North Canton, Ohio
Standard 2015-08-19 ValidFAA registration status code V: Valid registration. All codes
N20505 Cessna
182T
Fixed-wing, single engine Individual owner
Florida
Standard 2015-08-18 ValidFAA registration status code V: Valid registration. All codes
N2375J Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2015-08-18 ValidFAA registration status code V: Valid registration. All codes
N285CV Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2015-08-18 ValidFAA registration status code V: Valid registration. All codes
N51816 Cessna
182T
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2015-08-18 ValidFAA registration status code V: Valid registration. All codes
N5200A Cessna
182T
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2015-08-18 ValidFAA registration status code V: Valid registration. All codes
N6870L Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2015-08-18 ValidFAA registration status code V: Valid registration. All codes
N36297 Piper
PA-32RT-300
Fixed-wing, single engine Project 70 Audio Service INC
Adel, Georgia
Standard 2015-08-13 ValidFAA registration status code V: Valid registration. All codes
N3673M Piper
PA-32-300
Fixed-wing, single engine Beacon Park Pointe LLC
Orlando, Florida
Standard 2015-08-10 ValidFAA registration status code V: Valid registration. All codes
N61R Gray Jack L
TEAM ROCKET F1
Fixed-wing, single engine Individual owner
California
Experimental 2015-08-07 ValidFAA registration status code V: Valid registration. All codes
N9191V Piper
PA-32R-301
Fixed-wing, single engine Milville Aviation LLC
Wilmington, Delaware
Standard 2015-07-30 ValidFAA registration status code V: Valid registration. All codes
N7256G Cessna
182S
Fixed-wing, single engine Avstar INC
Seattle, Washington
Standard 2015-07-29 ValidFAA registration status code V: Valid registration. All codes
N81991 Piper
PA-32-301
Fixed-wing, single engine Individual owner
Florida
Standard 2015-07-29 ValidFAA registration status code V: Valid registration. All codes
N2604Z Piper
PA-23-250
Fixed-wing, multi-engine Co-owned owner
Florida
Standard 2015-07-27 ValidFAA registration status code V: Valid registration. All codes
N613L George J Costigan
COSTIGAN-VANS RV-10
Fixed-wing, single engine Individual owner
New Hampshire
Experimental 2015-07-24 ValidFAA registration status code V: Valid registration. All codes
N540SE Staudacher Aircraft Inc
S 300 E
Fixed-wing, single engine Soar International LLC
Olive Branch, Mississippi
Experimental 2015-07-23 ValidFAA registration status code V: Valid registration. All codes
N58CF Smith
AEROSTAR 601P
Fixed-wing, multi-engine Computerized Flight Systems INC
Nokomis, Florida
Standard 2015-07-23 ValidFAA registration status code V: Valid registration. All codes
N9570A Cessna
182S
Fixed-wing, single engine Upper Fifteen INC
Latham, New York
Standard 2015-07-17 ValidFAA registration status code V: Valid registration. All codes
N182AX Cessna
182T
Fixed-wing, single engine N182Ax LLC
Newark, Delaware
Standard 2015-07-13 ValidFAA registration status code V: Valid registration. All codes
N182WG Cessna
182S
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2015-07-07 ValidFAA registration status code V: Valid registration. All codes
N2036T Tomalesky Peter
TOPCAT
Fixed-wing, single engine Co-owned owner
North Carolina
Experimental 2015-07-07 ValidFAA registration status code V: Valid registration. All codes
N20787 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Texas
Standard 2015-07-06 ValidFAA registration status code V: Valid registration. All codes
N580RW Cessna
182S
Fixed-wing, single engine Telesport Aviation LLC
Wilmington, Delaware
Standard 2015-07-06 ValidFAA registration status code V: Valid registration. All codes
N2150J Piper
PA-28-236
Fixed-wing, single engine Individual owner
Tennessee
Standard 2015-06-30 ValidFAA registration status code V: Valid registration. All codes
N370MD Piper
PA-23-250
Fixed-wing, multi-engine Almost There Air LLC
Daytona Beach, Florida
Standard 2015-06-29 ValidFAA registration status code V: Valid registration. All codes
N42945 Piper
PA-32-301
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2015-06-29 ValidFAA registration status code V: Valid registration. All codes
N7530M Robinson Helicopter
R44 II
Helicopter Emerald City Aircraft Leasing INC
Port Orchard, Washington
Standard 2015-06-29 ValidFAA registration status code V: Valid registration. All codes
N814RV 7S5Rv10 Llc
RV-10
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2015-06-29 ValidFAA registration status code V: Valid registration. All codes
N9364P Piper
PA-24-260
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2015-06-22 ValidFAA registration status code V: Valid registration. All codes
N2437M Piper
PA-23-250
Fixed-wing, multi-engine Rock Full Gospel Church
Parkersburg, West Virginia
Standard 2015-06-12 ValidFAA registration status code V: Valid registration. All codes
N401PJ Piper
PA-23-250
Fixed-wing, multi-engine Skylens LLC
Hammond, Louisiana
Standard 2015-06-09 ValidFAA registration status code V: Valid registration. All codes
N4959W Rockwell International
114
Fixed-wing, single engine Steverson Jill T
Newhebron, Mississippi
Standard 2015-06-08 ValidFAA registration status code V: Valid registration. All codes
N114AW Rockwell International
114
Fixed-wing, single engine Individual owner
Tennessee
Standard 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N600SH Hill Steve
STAUDACHER S600
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N46CB Piper
PA-32R-300
Fixed-wing, single engine Integrated Design and Supply INC
Crystal Lake, Illinois
Standard 2015-06-02 ValidFAA registration status code V: Valid registration. All codes
N64WD Piper
PA-32R-301
Fixed-wing, single engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2015-06-01 ValidFAA registration status code V: Valid registration. All codes
N4266B Maule
M-7-260
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2015-05-27 ValidFAA registration status code V: Valid registration. All codes
N50504 Cessna
182T
Fixed-wing, single engine Individual owner
Ohio
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N71B Cessna
182T
Fixed-wing, single engine Co-owned owner
California
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N7735B Robinson Helicopter
R44 II
Helicopter Evergreen Investments LLC
Big Lake, Alaska
Standard 2015-05-15 ValidFAA registration status code V: Valid registration. All codes
N2446S Cessna
182S
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2015-05-07 ValidFAA registration status code V: Valid registration. All codes
N969WC Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Texas State Aviation
San Marcos, Texas
Standard 2015-05-06 ValidFAA registration status code V: Valid registration. All codes
N59FD Robinson Helicopter
R44 II
Helicopter Pollux Aviation LTD
Wasilla, Alaska
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N292RG Commander Aircraft Co
114TC
Fixed-wing, single engine Washington Road Associates LLC
Dover, Delaware
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N97CR Piper
PA-32R-300
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N840DW Cessna
182S
Fixed-wing, single engine Individual owner
Florida
Standard 2015-04-21 ValidFAA registration status code V: Valid registration. All codes
N234NL Robinson Helicopter
R44 II
Helicopter H B H Enterprises INC
Wilmington, Delaware
Standard 2015-04-15 ValidFAA registration status code V: Valid registration. All codes
N337DB Cessna
182T
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2015-04-14 ValidFAA registration status code V: Valid registration. All codes
N797G Maule
MT-7-235
Fixed-wing, single engine Advanced Global Services INC
Vero Beach, Florida
Standard 2015-04-09 ValidFAA registration status code V: Valid registration. All codes
N844D Socata
TB20
Fixed-wing, single engine Individual owner
Texas
Standard 2015-04-09 ValidFAA registration status code V: Valid registration. All codes
N10CX Cessna
206H
Fixed-wing, single engine Alameda County Sheriffs Office
Livermore, California
Standard 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N2501N Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Illinois
Standard 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N540PS Baker Donal E
PITTS S1-11B
Fixed-wing, single engine Individual owner
Virginia
Experimental 2015-04-02 ValidFAA registration status code V: Valid registration. All codes
N914RL Cessna
182T
Fixed-wing, single engine Individual owner
California
Standard 2015-04-02 ValidFAA registration status code V: Valid registration. All codes
N133DF Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Arizona
Standard 2015-04-01 ValidFAA registration status code V: Valid registration. All codes
N31995 Piper
PA-32RT-300
Fixed-wing, single engine One Zero Tango LLC
Chattanooga, Tennessee
Standard 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N82723 Piper
PA-32-301
Fixed-wing, single engine Dodson International Parts INC
Rantoul, Kansas
Standard 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N326SX Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Individual owner
Oregon
Standard 2015-03-30 ValidFAA registration status code V: Valid registration. All codes
N8727P Piper
PA-24-260
Fixed-wing, single engine Individual owner
Texas
Standard 2015-03-27 ValidFAA registration status code V: Valid registration. All codes
N505TR Gestes Tim R
VANS RV-10
Fixed-wing, single engine Caralex Aviation LLC
Mcallen, Texas
Experimental 2015-03-26 ValidFAA registration status code V: Valid registration. All codes
N64717 Piper
PA-60-602P
Fixed-wing, multi-engine Top Aviation Services INC
Weston, Florida
Standard 2015-03-16 ValidFAA registration status code V: Valid registration. All codes
N526SC Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Kansas
Standard 2015-03-11 ValidFAA registration status code V: Valid registration. All codes
N41EK Piper
PA-32RT-300
Fixed-wing, single engine Prairie View Energy II LLC
Granite Falls, Minnesota
Standard 2015-03-04 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.