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
N9581V Cessna
182S
Fixed-wing, single engine Martin Northern Aviation LLC
Benton, Arkansas
Standard 2024-02-29 ValidFAA registration status code V: Valid registration. All codes
N2200S Piper
PA-32-300
Fixed-wing, single engine Pa32 Aviation LLC
Blue Bell, Pennsylvania
Standard 2024-02-28 ValidFAA registration status code V: Valid registration. All codes
N540BT Turner William R
GLASAIR III
Fixed-wing, single engine Individual owner
Utah
Experimental 2024-02-28 ValidFAA registration status code V: Valid registration. All codes
N5872N Rockwell International
114
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-02-27 ValidFAA registration status code V: Valid registration. All codes
N424TR Cessna
182T
Fixed-wing, single engine Covin Equipment LLC
Arlington, Texas
Standard 2024-02-26 ValidFAA registration status code V: Valid registration. All codes
N821DB Joseph Keys
RV10
Fixed-wing, single engine Flying Old Glory LLC
Kalispell, Montana
Experimental 2024-02-23 ValidFAA registration status code V: Valid registration. All codes
N47646 Piper
PA-32R-300
Fixed-wing, single engine Span Development LLC
Madera, California
Standard 2024-02-22 ValidFAA registration status code V: Valid registration. All codes
N30VB Robinson Helicopter
R44 II
Helicopter Groundrush Entertainment
Beaverton, Oregon
Standard 2024-02-21 ValidFAA registration status code V: Valid registration. All codes
N2824F Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
California
Standard 2024-02-20 ValidFAA registration status code V: Valid registration. All codes
N218DE Cessna
182S
Fixed-wing, single engine Frysinger Investments LLC
Hudson Oaks, Texas
Standard 2024-02-19 ValidFAA registration status code V: Valid registration. All codes
N144SR Robinson Helicopter
R44 II
Helicopter Cedar Ridge Aviation LLC
Knox City, Texas
Multiple 2024-02-18 ValidFAA registration status code V: Valid registration. All codes
N2020C Cessna
182T
Fixed-wing, single engine N2020C LLC
Abilene, Texas
Standard 2024-02-15 ValidFAA registration status code V: Valid registration. All codes
N442KC Angel Aircraft Corp
44
Fixed-wing, multi-engine Alaska Angel Aviation LLC
Anchorage, Alaska
Standard 2024-02-15 ValidFAA registration status code V: Valid registration. All codes
N583GW Rockwell International
114
Fixed-wing, single engine Gentlemans Investments LLC
Camden, Maine
Standard 2024-02-15 ValidFAA registration status code V: Valid registration. All codes
N220NX Norris
EX2K
Fixed-wing, single engine Individual owner
California
Experimental 2024-02-14 ValidFAA registration status code V: Valid registration. All codes
N964AC Cessna
206H
Fixed-wing, single engine 63 Victor LLC
Fremont, Ohio
Standard 2024-02-14 ValidFAA registration status code V: Valid registration. All codes
N74663 Robinson Helicopter
R44 II
Helicopter Los Cazadores Aviation LLC
Cut Off, Louisiana
Standard 2024-02-13 ValidFAA registration status code V: Valid registration. All codes
N9236V Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-02-10 ValidFAA registration status code V: Valid registration. All codes
N11DW Wright Dan B
SX 300
Fixed-wing, single engine Calnevaz CORP
Sheridan, Wyoming
Experimental 2024-02-09 ValidFAA registration status code V: Valid registration. All codes
N235 Maule
MT-7-235
Fixed-wing, single engine Sanitary Environmental Recyclers CORP
Vero Beach, Florida
Standard 2024-02-09 ValidFAA registration status code V: Valid registration. All codes
N74730 Robinson Helicopter
R44 II
Helicopter Twin Rivers Wildlife INC
Elko, Nevada
Standard 2024-02-08 ValidFAA registration status code V: Valid registration. All codes
N31377 Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Montana
Standard 2024-02-06 ValidFAA registration status code V: Valid registration. All codes
N800AA Smith
AEROSTAR 601P
Fixed-wing, multi-engine Jasper Air LLC
Toms River, New Jersey
Standard 2024-02-06 ValidFAA registration status code V: Valid registration. All codes
N330KG Elliott Joseph R
RV-10
Fixed-wing, single engine Beats Driving LLC
Falling Waters, West Virginia
Experimental 2024-02-04 ValidFAA registration status code V: Valid registration. All codes
N4320T Piper
PA-32R-301
Fixed-wing, single engine Bsrp III LLC
Hickory, North Carolina
Standard 2024-02-04 ValidFAA registration status code V: Valid registration. All codes
N21198 Cessna
182T
Fixed-wing, single engine Jackie Hood Farms LLC
Moulton, Alabama
Standard 2024-02-01 ValidFAA registration status code V: Valid registration. All codes
N6124Q Maule
MX-7-235
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-01-31 ValidFAA registration status code V: Valid registration. All codes
N63ED Rosinbaum Daryl A
SWEARINGEN SX300
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-01-30 ValidFAA registration status code V: Valid registration. All codes
N702EL Piper
AEROSTAR 602P
Fixed-wing, multi-engine Aerostar Transportation Systems LLC
Houston, Texas
Standard 2024-01-30 ValidFAA registration status code V: Valid registration. All codes
N9553S Cessna
182S
Fixed-wing, single engine Hunters Adventures LLC
Kennesaw, Georgia
Standard 2024-01-29 ValidFAA registration status code V: Valid registration. All codes
N702GP Piper
PA-60-602P
Fixed-wing, multi-engine Universal Investors LLC
Independence Chate, Michigan
Standard 2024-01-26 ValidFAA registration status code V: Valid registration. All codes
N111MY Piper
PA-23-250
Fixed-wing, multi-engine Meshed Networx LLC
New Market, Virginia
Standard 2024-01-23 ValidFAA registration status code V: Valid registration. All codes
N10816 Piper
PA-24-260
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-01-22 ValidFAA registration status code V: Valid registration. All codes
N47697 Piper
PA-32-300
Fixed-wing, single engine Individual owner
California
Standard 2024-01-21 ValidFAA registration status code V: Valid registration. All codes
N2455E Cessna
182S
Fixed-wing, single engine Route One Aviation LLC
Inver Grove, Minnesota
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N3003A Maule
M-8-235
Fixed-wing, single engine Jwb Three LLC
Cat Spring, Texas
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N300EP Cessna
182S
Fixed-wing, single engine Van Anda Aviation LLC
Apopka, Florida
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N1177A Piper
PA-32R-300
Fixed-wing, single engine N1177A LLC
Lewes, Delaware
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N10AV Cessna
182S
Fixed-wing, single engine Maak Holdings LLC
Missoula, Montana
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N38562 Piper
PA-32R-300
Fixed-wing, single engine Adventures Awaiting LLC
Rogers, Arkansas
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N13GE Robinson Helicopter
R44 II
Helicopter Paratus Air INC
Auburn, Indiana
Standard 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N8427E Aerofab Inc
LAKE 250
Fixed-wing, single engine Jc Aviation INC
St Simons Island, Georgia
Standard 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N3952V Maule
M-7-235
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-01-15 ValidFAA registration status code V: Valid registration. All codes
N8876V Bellanca
17-31A
Fixed-wing, single engine Blackburn Aviation Air LLC
Mesa, Arizona
Standard 2024-01-14 ValidFAA registration status code V: Valid registration. All codes
N311AM Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N31841 Piper
PA-32-300
Fixed-wing, single engine Rotormate LLC
Royse City, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N4197X Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N537HP Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N75RB Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N861BA Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N585SK Lanshe Aerospace Llc
MAC-145B
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-01-12 ValidFAA registration status code V: Valid registration. All codes
N9292Q Piper
PA-32R-301
Fixed-wing, single engine Withheld at owner's request
Standard 2024-01-12 ValidFAA registration status code V: Valid registration. All codes
N24FT Robinson Helicopter
R44 II
Helicopter Rocinante Air LLC
Weslaco, Texas
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N65JH Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Florida
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N299FC Piper
PA-32R-301
Fixed-wing, single engine Feather Flight Aviation INC
Warwick, New York
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N2593Z Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
New Jersey
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N4740W Rockwell International
114
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N191SS Steele James W
SH-3R
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N447V Dombroski
VANS RV-10
Fixed-wing, single engine Individual owner
California
Experimental 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N4755W Rockwell International
114
Fixed-wing, single engine Adobe Enterprises of Osceola LLC
Okeechobee, Florida
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N696SA Cessna
182S
Fixed-wing, single engine Three Green Aviators LLC
Midland, Texas
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N978RA Cessna
182S
Fixed-wing, single engine Bdk Pegasus LLC
Bastrop, Texas
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N385G Aerofab Inc
LAKE LA-250
Fixed-wing, single engine
Standard 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N2662Z Cessna
182S
Fixed-wing, single engine Bidcal INC
Chico, California
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N900Y Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-01-01 ValidFAA registration status code V: Valid registration. All codes
N34GH Robinson Helicopter
R44 II
Helicopter Roofing Guys LLC
Marion, Illinois
Standard 2023-12-28 ValidFAA registration status code V: Valid registration. All codes
N8812B Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine Wilde Air Service LLC
Volga, South Dakota
Restricted 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N939DJ Cessna
182T
Fixed-wing, single engine Jaffray Management LLC
Green Cove Springs, Florida
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N14135 Piper
PA-23-250
Fixed-wing, multi-engine Olympiakh LLC
Louisville, Kentucky
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N846LC Cessna
182S
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N377RC Piper
AEROSTAR 601P
Fixed-wing, multi-engine Ancona Air LLC
Wixom, Michigan
Standard 2023-12-24 ValidFAA registration status code V: Valid registration. All codes
N28138 Bellanca
17-31ATC
Fixed-wing, single engine Individual owner
Texas
Standard 2023-12-21 ValidFAA registration status code V: Valid registration. All codes
N819KS Cessna
172R
Fixed-wing, single engine N819Ks LLC
Palm City, Florida
Standard 2023-12-21 ValidFAA registration status code V: Valid registration. All codes
N9235Q Piper
PA-32R-301
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N2521N Socata
TB-20 TRINIDAD
Fixed-wing, single engine Open Heavens Aerospace LLC
Fort Gratiot, Michigan
Standard 2023-12-19 ValidFAA registration status code V: Valid registration. All codes
N8567G Martin C M/Harris R G
HARMON ROCKET II
Fixed-wing, single engine Rally Rocket LLC
Fort Collins, Colorado
Experimental 2023-12-19 ValidFAA registration status code V: Valid registration. All codes
N518TP Hanaway Thomas W
RV-10
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N21200 Cessna
182T
Fixed-wing, single engine Paramus Flying Club INC
Fairfield, New Jersey
Standard 2023-12-14 ValidFAA registration status code V: Valid registration. All codes
N400GF Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2023-12-13 ValidFAA registration status code V: Valid registration. All codes
N816FA Cessna
182T
Fixed-wing, single engine Temm 2000 INC
Arcola, Illinois
Standard 2023-12-13 ValidFAA registration status code V: Valid registration. All codes
N63941 Piper
PA-23-250
Fixed-wing, multi-engine N63941 LLP
Mayaguez, Puerto Rico
Standard 2023-12-11 ValidFAA registration status code V: Valid registration. All codes
N23959 Cessna
182T
Fixed-wing, single engine State of Wisconsin
Madison, Wisconsin
Standard 2023-12-08 ValidFAA registration status code V: Valid registration. All codes
N114HP Rockwell International
114
Fixed-wing, single engine Dolanair LLC
Coal Valley, Illinois
Standard 2023-12-07 ValidFAA registration status code V: Valid registration. All codes
N658BF Levr / Air Corp
SH-3R
Fixed-wing, single engine Individual owner
Arizona
Experimental 2023-12-07 ValidFAA registration status code V: Valid registration. All codes
N313GA Hesse Robert R C
GLASAIR III
Fixed-wing, single engine Individual owner
Oregon
Experimental 2023-12-06 ValidFAA registration status code V: Valid registration. All codes
N67SS Aero Commander
500-U
Fixed-wing, multi-engine Individual owner
Texas
Standard 2023-12-05 ValidFAA registration status code V: Valid registration. All codes
N5809N Rockwell International
114
Fixed-wing, single engine N5809N INC
New Castle, Delaware
Standard 2023-12-03 ValidFAA registration status code V: Valid registration. All codes
N999VV Maule
M-7-235C
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N519TT Colin Smith
BEARHAWK MODEL B
Fixed-wing, single engine Individual owner
California
Experimental 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N25SW Socata
TB-20 TRINIDAD
Fixed-wing, single engine Micro Mechanical LLC
Port Orange, Florida
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N469DT Cessna
182S
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N204LC Robinson Helicopter
R44 II
Helicopter Utah State University
Logan, Utah
Standard 2023-11-26 ValidFAA registration status code V: Valid registration. All codes
N636RJ Cessna
182S
Fixed-wing, single engine Airspeed Aviation Associates LLC
Austin, Texas
Standard 2023-11-26 ValidFAA registration status code V: Valid registration. All codes
N412TG Piper
PA-32-300
Fixed-wing, single engine Individual owner
New Mexico
Standard 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N234U Cessna
206H
Fixed-wing, single engine Southwest Aviation Enterprises
Haslet, Texas
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N39569 Piper
PA-32-300
Fixed-wing, single engine Jayo LLC
Winston Salem, North Carolina
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N6326C Piper
PA-32-300
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-11-17 ValidFAA registration status code V: Valid registration. All codes
N7278X Cessna
182S
Fixed-wing, single engine Twin City Cloud 7 INC
Eden Prairie, Minnesota
Standard 2023-11-16 ValidFAA registration status code V: Valid registration. All codes
N540TC Todd Copeland
GLASAIR III
Fixed-wing, single engine Individual owner
Idaho
Experimental 2023-11-14 ValidFAA registration status code V: Valid registration. All codes
N999M Piper
PA-32RT-300
Fixed-wing, single engine Lesterville Land Holdings LLC
Ellington, Missouri
Standard 2023-11-14 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.