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
N5515L Maule
MT-7-235
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N8200Y Piper
PA-32-301
Fixed-wing, single engine Cj Industries LLC
Chesnee, South Carolina
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N181MJ Maule
M-7-235C
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N18YL Robinson Helicopter
R44 II
Helicopter Tj Helicopters LLC
Seymour, Tennessee
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N113AF Robinson Helicopter
R44 II
Helicopter Ra Aviation LLC
Clinton, Louisiana
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N195RB Maule
M-7-260
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N9525D Cessna
182S
Fixed-wing, single engine Flying Neutrons LLC
Lebanon, Ohio
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N2TQ Quist Thomas
RV-4 HARMON ROCKET
Fixed-wing, single engine Flying M Enterprises LLC
Snowville, Utah
Experimental 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N370ME Cessna
206H
Fixed-wing, single engine Flying Circuss Aviation Services INC
Wasilla, Alaska
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N506X Piper
PA32-301FT
Fixed-wing, single engine Lyons Leasing LLC
Zionsville, Indiana
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N8551D Aerofab Inc
LAKE 250
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N65514 Cessna
182T
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N8390J Piper
PA-32-301
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N189WB Billups William A
GLASAIR III
Fixed-wing, single engine Dalewood Lady LLC
Kalispell, Montana
Experimental 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N478GP Cessna
182T
Fixed-wing, single engine Gypsy Aviation LLC
Hattiesburg, Mississippi
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N6081X Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N37BK Robinson Helicopter
R44 II
Helicopter Changing Horizons LLC
Helena, Montana
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N8846P Piper
PA-24-260
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-07 ValidFAA registration status code V: Valid registration. All codes
N15KF Piper
PA-32-301
Fixed-wing, single engine H Aviation LLC
Celina, Texas
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N39964 Piper
PA-32RT-300
Fixed-wing, single engine Sand Box Powder Coating INC
Elmira, New York
Standard 2021-05-05 ValidFAA registration status code V: Valid registration. All codes
N195PJ Piper
PA-32-300
Fixed-wing, single engine Swif LLC
Atlantic, Iowa
Standard 2021-05-04 ValidFAA registration status code V: Valid registration. All codes
N106BH Hester Bobby
F1 ROCKET
Fixed-wing, single engine Sparebanc LLC
Appleton, Minnesota
Experimental 2021-04-29 ValidFAA registration status code V: Valid registration. All codes
N22UT Piper
PA-32-301
Fixed-wing, single engine Momentum Foundation
Tullahoma, Tennessee
Standard 2021-04-24 ValidFAA registration status code V: Valid registration. All codes
N7VC Cox Vernon L
COX HAWK
Fixed-wing, single engine North Carolina Aviation Museum and Hall of Fame
Asheboro, North Carolina
Experimental 2021-04-24 ValidFAA registration status code V: Valid registration. All codes
N13AV Gippsland
GA-8
Fixed-wing, single engine Grant Aviation INC
Anchorage, Alaska
Standard 2021-04-23 ValidFAA registration status code V: Valid registration. All codes
N2747R Cessna
182S
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2021-04-23 ValidFAA registration status code V: Valid registration. All codes
N36149 Piper
PA-32RT-300
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N44LN Robinson Helicopter
R44 II
Helicopter Brown Bear Air INC
Anchorage, Alaska
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N601HB Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N8007B Piper
PA-32R-301
Fixed-wing, single engine Hart Adventures LLC
Riverside, Alabama
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N94DF Smith
AEROSTAR 601P
Fixed-wing, multi-engine Besa Aircraft CORP
Lafayette Hill, Pennsylvania
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N39647 Piper
PA-32RT-300
Fixed-wing, single engine Pcl2 LLC
Menomonie, Wisconsin
Standard 2021-04-17 ValidFAA registration status code V: Valid registration. All codes
N755RM Guardalabene Tony
HARMON ROCKET
Fixed-wing, single engine Individual owner
Colorado
Experimental 2021-04-17 ValidFAA registration status code V: Valid registration. All codes
N4307T Piper
PA-32-300
Fixed-wing, single engine Individual owner
California
Standard 2021-04-16 ValidFAA registration status code V: Valid registration. All codes
N451WS Robinson Helicopter
R44 II
Helicopter G&S Property Management LLC
Saint Ignatius, Montana
Standard 2021-04-15 ValidFAA registration status code V: Valid registration. All codes
N158JD Piper
PA-31-350
Fixed-wing, multi-engine Navajo N158Jd LLC
Wilmington, Delaware
Standard 2021-04-14 ValidFAA registration status code V: Valid registration. All codes
N300UM Piper
PA-32-301
Fixed-wing, single engine Murray Air LLC
Patoka, Illinois
Standard 2021-04-14 ValidFAA registration status code V: Valid registration. All codes
N832SP Piper
PA-32R-301
Fixed-wing, single engine Riverside Exteriors INC
Kalispell, Montana
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N2456V Cessna
182T
Fixed-wing, single engine Premier Flight Solutions LLC
Orlando, Florida
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N41BB Piper
AEROSTAR 600
Fixed-wing, multi-engine Vagabond Air LLC
Dover, Delaware
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N6899R Piper
PA-60-602P
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N1622P Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Texas
Standard 2021-04-07 ValidFAA registration status code V: Valid registration. All codes
N34JA Piper
AEROSTAR 600
Fixed-wing, multi-engine N47Me LLC
Tampa, Florida
Standard 2021-04-07 ValidFAA registration status code V: Valid registration. All codes
N41PW Socata
TB-20 TRINIDAD
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2021-04-07 ValidFAA registration status code V: Valid registration. All codes
N24TA Socata
TB-20 TRINIDAD
Fixed-wing, single engine N24Ta LLC
Wilmington, Delaware
Standard 2021-04-01 ValidFAA registration status code V: Valid registration. All codes
N4114B Commander Aircraft Co
114-B
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-04-01 ValidFAA registration status code V: Valid registration. All codes
N8323F Cessna
182S
Fixed-wing, single engine Individual owner
Texas
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N874SL Peter Nassar
RV10
Fixed-wing, single engine Avtech Group LLC
Saint Augustine, Florida
Experimental 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N9298P Piper
PA-32R-301
Fixed-wing, single engine Blackhawk Airventures LLC
Wilmington, Delaware
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N442HC Robinson Helicopter
R44 II
Helicopter High Country Helicopters LLC
Sisters, Oregon
Standard 2021-03-25 ValidFAA registration status code V: Valid registration. All codes
N8806L Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine Individual owner
South Dakota
Restricted 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N444FW Piper
PA-32R-300
Fixed-wing, single engine Individual owner
Florida
Standard 2021-03-22 ValidFAA registration status code V: Valid registration. All codes
N88108 Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine Nor-Wes INC
Shreveport, Louisiana
Restricted 2021-03-19 ValidFAA registration status code V: Valid registration. All codes
N114L Hine Derek L
LANCAIR 4P
Fixed-wing, single engine Regan Properties LLC
Coeur D Alene, Idaho
Experimental 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N82456 Piper
PA-32-301
Fixed-wing, single engine Ajk Aircraft LLC
Xenia, Ohio
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N314SA Cessna
182T
Fixed-wing, single engine Aeryn Innovations LLC
Dallas, Texas
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N31657 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Connecticut
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N3769M Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Maine
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N559JP Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N8179Z Piper
PA-32-301
Fixed-wing, single engine Individual owner
Maryland
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N125JA Cessna
182T
Fixed-wing, single engine Billmans INC
Cut Bank, Montana
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N2097S Cessna
182T
Fixed-wing, single engine Long Island Aviators LLC
Seaford, New York
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N9622E Bellanca
17-31ATC
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N8434E Aerofab Inc
LAKE 250
Fixed-wing, single engine Individual owner
Florida
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N579RM Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Individual owner
Texas
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N8454R Piper
PA-32-301
Fixed-wing, single engine Global Agriculture Commodities LLC
Brooklet, Georgia
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N28WR Piper
PA-23-250
Fixed-wing, multi-engine N28Wr LLC
Simpsonville, South Carolina
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N46SD Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-03-06 ValidFAA registration status code V: Valid registration. All codes
N508CS Robinson Helicopter
R44 II
Helicopter Joey Os LLC
Darlington, Pennsylvania
Standard 2021-03-06 ValidFAA registration status code V: Valid registration. All codes
N6776A Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-03-06 ValidFAA registration status code V: Valid registration. All codes
N21449 Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2021-03-05 ValidFAA registration status code V: Valid registration. All codes
N2323M Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-03-05 ValidFAA registration status code V: Valid registration. All codes
N2352Z Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-03-05 ValidFAA registration status code V: Valid registration. All codes
N56455 Maule
M-6-235
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-03-05 ValidFAA registration status code V: Valid registration. All codes
N3513T Cessna
182T
Fixed-wing, single engine Crusade Investments LLC
Ardmore, Oklahoma
Standard 2021-03-03 ValidFAA registration status code V: Valid registration. All codes
N128CP Maule
MT-7-235
Fixed-wing, single engine Maule Flight INC
Moultrie, Georgia
Standard 2021-02-27 ValidFAA registration status code V: Valid registration. All codes
N2803A Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-02-27 ValidFAA registration status code V: Valid registration. All codes
N703US Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Nevada
Standard 2021-02-25 ValidFAA registration status code V: Valid registration. All codes
N7273E Cessna
182S
Fixed-wing, single engine Individual owner
West Virginia
Standard 2021-02-22 ValidFAA registration status code V: Valid registration. All codes
N8374P Piper
PA-32-301
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-02-20 ValidFAA registration status code V: Valid registration. All codes
N321AB Rockwell International
114A
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2021-02-17 ValidFAA registration status code V: Valid registration. All codes
N780Z Piper
PA32-301FT
Fixed-wing, single engine Cornerstone Aviation LLC
Columbus, Indiana
Standard 2021-02-16 ValidFAA registration status code V: Valid registration. All codes
N5383F Piper
PA-32R-300
Fixed-wing, single engine N&T Investments LLC
Gulf Shores, Alabama
Standard 2021-02-12 ValidFAA registration status code V: Valid registration. All codes
N726WT Dave Matheson/Ameet Nidmarty
VANS RV-10
Fixed-wing, single engine Jwg Aviation LLC
Livingston, Montana
Experimental 2021-02-12 ValidFAA registration status code V: Valid registration. All codes
N25FT Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N54757 Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N622TB Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N107PA Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N52EV Piper
PA-23-250
Fixed-wing, multi-engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N547MC Cessna
182S
Fixed-wing, single engine S & J Ventures INC
Wilmington, Delaware
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N774LS Piper
PA-32-300
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N732VF Cessna
182S
Fixed-wing, single engine Victor Fox Aviation LLC
Newport Beach, California
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N2MM Mccluskey Michael D
M3
Fixed-wing, single engine Glas Lease LLC
Austin, Texas
Experimental 2021-02-06 ValidFAA registration status code V: Valid registration. All codes
N800TC Piper
PA-32-301
Fixed-wing, single engine Americas Choice Properties LLC
Talbott, Tennessee
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N137LH Robinson Helicopter
R44 II
Helicopter Aero Holdings LLC
Palm City, Florida
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N247F Cessna
206H
Fixed-wing, single engine Mansfield Heliflight INC
Milton, Vermont
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N4003A Maule
M-7-260C
Fixed-wing, single engine Turboair INC Owner Trustee
Wilmington, Delaware
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N442PW Robinson Helicopter
R44 II
Helicopter Beluga LLC
Wasilla, Alaska
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N65988 Cessna
182T
Fixed-wing, single engine Arkansas Industrial Manufacturing LLC
Wilmington, Delaware
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N106FW Rockwell International
500-S
Fixed-wing, multi-engine Florida Fish & Wildlife Conservation Commission
Lakeland, Florida
Standard 2021-02-03 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.