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
N232ES Cessna
182T
Fixed-wing, single engine Bayside Beach Resort LLC
Tavernier, Florida
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N98853 Cessna
182S
Fixed-wing, single engine
Standard 2020-04-06 ValidFAA registration status code V: Valid registration. All codes
N114SM Rockwell International
114
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-04-03 ValidFAA registration status code V: Valid registration. All codes
N3042U Piper
PA-32-300
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-04-03 ValidFAA registration status code V: Valid registration. All codes
N554WM Cessna
182T
Fixed-wing, single engine Valdosta Flying Group LLC
Valdosta, Georgia
Standard 2020-04-03 ValidFAA registration status code V: Valid registration. All codes
N317X Maule
M-5-235C
Fixed-wing, single engine Co-owned owner
California
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N3511F Cessna
182T
Fixed-wing, single engine Co-owned owner
Texas
Standard 2020-03-27 ValidFAA registration status code V: Valid registration. All codes
N8133S Piper
PA-32-300
Fixed-wing, single engine Individual owner
California
Standard 2020-03-26 ValidFAA registration status code V: Valid registration. All codes
N36CR Reiner Craig
HARMON ROCKET II
Fixed-wing, single engine Racer Aviation LLC
Moorestown, New Jersey
Experimental 2020-03-18 ValidFAA registration status code V: Valid registration. All codes
N905CZ Stuart Smith
COZY MKIV
Fixed-wing, single engine Individual owner
Washington
Experimental 2020-03-17 ValidFAA registration status code V: Valid registration. All codes
N142DL Cessna
182T
Fixed-wing, single engine Ross Branta Enterprises
Boise, Idaho
Standard 2020-03-16 ValidFAA registration status code V: Valid registration. All codes
N65903 Cessna
182T
Fixed-wing, single engine N65903 LLC
Union Gap, Washington
Standard 2020-03-16 ValidFAA registration status code V: Valid registration. All codes
N770BD Mcginty Edwin R
RV ATOR RV-10
Fixed-wing, single engine J/D Aviation LLC
Chisago City, Minnesota
Experimental 2020-03-16 ValidFAA registration status code V: Valid registration. All codes
N9269P Piper
PA-24-260
Fixed-wing, single engine Withheld at owner's request
Standard 2020-03-12 ValidFAA registration status code V: Valid registration. All codes
N694CR Piper
PA-23-250
Fixed-wing, multi-engine Bravo Zulu Aviation Services LLC
Jacksonville, Florida
Standard 2020-03-11 ValidFAA registration status code V: Valid registration. All codes
N4364B Piper
PA-32R-301
Fixed-wing, single engine Fairway Aviation LLC
Great Bend, Kansas
Standard 2020-03-09 ValidFAA registration status code V: Valid registration. All codes
N38912 Piper
PA-32R-300
Fixed-wing, single engine Individual owner
Texas
Standard 2020-03-05 ValidFAA registration status code V: Valid registration. All codes
N697SU Robinson Helicopter
R44 II
Helicopter Southern Utah University
Cedar City, Utah
Standard 2020-03-05 ValidFAA registration status code V: Valid registration. All codes
N8958P Piper
PA-24-260
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2020-03-04 ValidFAA registration status code V: Valid registration. All codes
N1896B Cessna
182T
Fixed-wing, single engine Individual owner
Texas
Standard 2020-03-03 ValidFAA registration status code V: Valid registration. All codes
N232SB Cessna
182S
Fixed-wing, single engine Eagle Crest 2Sb LLC
Milton, Delaware
Standard 2020-03-03 ValidFAA registration status code V: Valid registration. All codes
N38677 Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2020-02-27 ValidFAA registration status code V: Valid registration. All codes
N274JP Prudhomme Jean
VELOCITY XL
Fixed-wing, single engine 802 21St Street LLC
Paso Robles, California
Experimental 2020-02-26 ValidFAA registration status code V: Valid registration. All codes
N59683 Piper
PA-36-300
Fixed-wing, single engine Individual owner
South Carolina
Restricted 2020-02-26 ValidFAA registration status code V: Valid registration. All codes
N54MJ Maule
MT-7-235
Fixed-wing, single engine Individual owner
Texas
Standard 2020-02-25 ValidFAA registration status code V: Valid registration. All codes
N612NP Socata
TB20
Fixed-wing, single engine Birdpark Aviation LLC
Richmond, Texas
Standard 2020-02-25 ValidFAA registration status code V: Valid registration. All codes
N4376S Piper
PA-32-301
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-02-24 ValidFAA registration status code V: Valid registration. All codes
N779DZ Robinson Helicopter
R44 II
Helicopter Pollux Aviation LTD
Wasilla, Alaska
Standard 2020-02-14 ValidFAA registration status code V: Valid registration. All codes
N83213 Piper
PA-32R-301
Fixed-wing, single engine P-R Aircraft LLC
Snellville, Georgia
Standard 2020-02-13 ValidFAA registration status code V: Valid registration. All codes
N227WZ Piper
AEROSTAR 601P
Fixed-wing, multi-engine 7Wz LLC
Calhoun, Georgia
Standard 2020-02-12 ValidFAA registration status code V: Valid registration. All codes
N306LT Piper
PA-32-300
Fixed-wing, single engine Individual owner
California
Standard 2020-02-12 ValidFAA registration status code V: Valid registration. All codes
N296AR Piper
PA-32-300
Fixed-wing, single engine Envation LLC
Winter Haven, Florida
Standard 2020-02-11 ValidFAA registration status code V: Valid registration. All codes
N422LB Piper
PA-32R-301
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-02-11 ValidFAA registration status code V: Valid registration. All codes
N260DC Dehavilland
DHC-1B-2-S5
Fixed-wing, single engine Ghostwriter Airshows LLC
Hustonville, Kentucky
Experimental 2020-02-10 ValidFAA registration status code V: Valid registration. All codes
N2951X Piper
PA-32-300
Fixed-wing, single engine Individual owner
Florida
Standard 2020-02-07 ValidFAA registration status code V: Valid registration. All codes
N369QC Piper
AEROSTAR 601P
Fixed-wing, multi-engine Hosking Aerobatics
Bountiful, Utah
Restricted 2020-02-07 ValidFAA registration status code V: Valid registration. All codes
N360SB Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Texas
Standard 2020-02-03 ValidFAA registration status code V: Valid registration. All codes
N65FT Taylor Frank
LANCAIR LEGACY
Fixed-wing, single engine Skytypers INC
Las Vegas, Nevada
Experimental 2020-01-31 ValidFAA registration status code V: Valid registration. All codes
N9983P Maule
M-6-235
Fixed-wing, single engine Taf Aerial Services LLC
Beeville, Texas
Standard 2020-01-27 ValidFAA registration status code V: Valid registration. All codes
N61455 Cessna
182T
Fixed-wing, single engine Co-owned owner
Florida
Standard 2020-01-24 ValidFAA registration status code V: Valid registration. All codes
N709HS Piper
PA-23-250
Fixed-wing, multi-engine Rokaboka LTD
Mount Ida, Arkansas
Standard 2020-01-24 ValidFAA registration status code V: Valid registration. All codes
N9543G Cessna
182S
Fixed-wing, single engine Hi Low Aviation LLC
Alpine, Texas
Standard 2020-01-24 ValidFAA registration status code V: Valid registration. All codes
N112KG Staudacher Aircraft Inc
S-300D2
Fixed-wing, single engine Individual owner
California
Experimental 2020-01-23 ValidFAA registration status code V: Valid registration. All codes
N251AG Anderson Greenwood
51
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-01-23 ValidFAA registration status code V: Valid registration. All codes
N1400P Aerofab Inc
LAKE LA-4-250
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-01-22 ValidFAA registration status code V: Valid registration. All codes
N6544A Piper
PA-23-250
Fixed-wing, multi-engine Matthews Aviation LLC
Hardinsburg, Kentucky
Standard 2020-01-21 ValidFAA registration status code V: Valid registration. All codes
N64VC Syracuse Vic
RV-10
Fixed-wing, single engine Individual owner
Arizona
Experimental 2020-01-17 ValidFAA registration status code V: Valid registration. All codes
N540JP Dehavilland
DHC-1B-2-S3
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-01-16 ValidFAA registration status code V: Valid registration. All codes
N989XL Carl E Kohn
VELOCITY XL RG
Fixed-wing, single engine Central Global Contractor LLC DBA
Saline, Michigan
Experimental 2020-01-10 ValidFAA registration status code V: Valid registration. All codes
N540LL Land Lloyd
LAND ROCKET
Fixed-wing, single engine Individual owner
Kansas
Experimental 2020-01-09 ValidFAA registration status code V: Valid registration. All codes
N680MG Iar Sa Brasov
IAR 823
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2020-01-07 ValidFAA registration status code V: Valid registration. All codes
N3886M Piper
PA-32-300
Fixed-wing, single engine Bravo Foxtrot Partners LLC
Knoxville, Tennessee
Standard 2020-01-06 ValidFAA registration status code V: Valid registration. All codes
N50240 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-12-26 ValidFAA registration status code V: Valid registration. All codes
N5551U Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N7812M Piper
PA-23-250
Fixed-wing, multi-engine Aerial Farmer LLC
Missoula, Montana
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N88061 Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine Individual owner
Montana
Restricted 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N62DJ Piper
PA-32-300
Fixed-wing, single engine Zig Zag INC
Wilmington, Delaware
Standard 2019-12-13 ValidFAA registration status code V: Valid registration. All codes
N342MJ Jenkins Myron
GLASAIR III
Fixed-wing, single engine Individual owner
Florida
Experimental 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N4945F Robinson Helicopter
R44 II
Helicopter Emerald City Aircraft Leasing INC
Port Orchard, Washington
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N32519 Bachert Nicholas T
RV-10
Fixed-wing, single engine Individual owner
Maryland
Experimental 2019-12-06 ValidFAA registration status code V: Valid registration. All codes
N421SA Cessna
182T
Fixed-wing, single engine Redbreast Aviation LLC
Boonton, New Jersey
Standard 2019-12-04 ValidFAA registration status code V: Valid registration. All codes
N5651N Maule
M-6-235
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-12-04 ValidFAA registration status code V: Valid registration. All codes
N707KB Piper
PA-32-301
Fixed-wing, single engine Norcal Home Loans INC
Placerville, California
Standard 2019-11-21 ValidFAA registration status code V: Valid registration. All codes
N213SM Cessna
206H
Fixed-wing, single engine Arrowhawk Imaging LLC
Morgantown, West Virginia
Standard 2019-11-19 ValidFAA registration status code V: Valid registration. All codes
N727GS Jones Stephen C
JONES STEEN SKYBOLT
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-11-18 ValidFAA registration status code V: Valid registration. All codes
N2691B Bockelman David C
TEAM ROCKET F-1
Fixed-wing, single engine Individual owner
California
Experimental 2019-11-15 ValidFAA registration status code V: Valid registration. All codes
N7702L Piper
PA-32R-301
Fixed-wing, single engine Prp Enterprises LLC
Lake Forest, California
Standard 2019-11-15 ValidFAA registration status code V: Valid registration. All codes
N2503D Socata
TB-20 TRINIDAD
Fixed-wing, single engine Alnico Aviation LLC
Lafayette, Indiana
Standard 2019-11-14 ValidFAA registration status code V: Valid registration. All codes
N99WH Hart Walter
GLASAIR SH III
Fixed-wing, single engine Individual owner
Idaho
Experimental 2019-11-14 ValidFAA registration status code V: Valid registration. All codes
N2522 Craig W Garella
RV-10
Fixed-wing, single engine Individual owner
Illinois
Experimental 2019-11-13 ValidFAA registration status code V: Valid registration. All codes
N271DC Cessna
182T
Fixed-wing, single engine Forum Aviation LLC
Middletown, Delaware
Standard 2019-11-12 ValidFAA registration status code V: Valid registration. All codes
N66E Maule
M-7-235C
Fixed-wing, single engine Individual owner
Maine
Standard 2019-11-12 ValidFAA registration status code V: Valid registration. All codes
N88LD Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-11-08 ValidFAA registration status code V: Valid registration. All codes
N7650V Aero Commander
CALLAIR A-9B
Fixed-wing, single engine North Carolina Soaring Association
Zebulon, North Carolina
Restricted 2019-11-07 ValidFAA registration status code V: Valid registration. All codes
N5329S Cessna
182T
Fixed-wing, single engine Alabama Forestry Commission
Montgomery, Alabama
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N570S Beech
56TC
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N957T Piper
PA-32R-301
Fixed-wing, single engine Severn Valley Aviation INC Trustee
Wilmington, Delaware
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N26RN Maule
M-7-260C
Fixed-wing, single engine Individual owner
Nebraska
Standard 2019-10-29 ValidFAA registration status code V: Valid registration. All codes
N96B Bracken
H R II
Fixed-wing, single engine Conservative Three LLC
Taft, California
Experimental 2019-10-29 ValidFAA registration status code V: Valid registration. All codes
N94TF Piper
PA-32R-301
Fixed-wing, single engine Wildblue LLC
Edgerton, Missouri
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N854DZ Cessna
182T
Fixed-wing, single engine Individual owner
Texas
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N36615 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N117WV Gruber Gerald F
GLASAIR III
Fixed-wing, single engine Redline Onsite Services LLC
Opelousas, Louisiana
Experimental 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N321HW Cessna
182S
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N385MA Cessna
182S
Fixed-wing, single engine Individual owner
Florida
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N522MM Piper
PA-32R-301
Fixed-wing, single engine Saratoga Aviation INC
Charleston, South Carolina
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N106TL Cessna
T182T
Fixed-wing, single engine Individual owner
California
Standard 2019-10-16 ValidFAA registration status code V: Valid registration. All codes
N133FC Beech
35-B33
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N225FA Cessna
182T
Fixed-wing, single engine Individual owner
Texas
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N2507T Socata
TB-20 TRINIDAD
Fixed-wing, single engine Co-owned owner
Hawaii
Standard 2019-10-07 ValidFAA registration status code V: Valid registration. All codes
N31569 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-10-07 ValidFAA registration status code V: Valid registration. All codes
N787PM Cessna
T182T
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-10-03 ValidFAA registration status code V: Valid registration. All codes
N7256W Cessna
182S
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N21TF Firdaus Tahir
SWEARINGEN SX-300
Fixed-wing, single engine Individual owner
Ohio
Experimental 2019-10-01 ValidFAA registration status code V: Valid registration. All codes
N80DJ Piper
PA-32R-301T
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-10-01 ValidFAA registration status code V: Valid registration. All codes
N74367 Robinson Helicopter
R44 II
Helicopter T-Time LLC
Wasilla, Alaska
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N16HM Smith
AEROSTAR 600
Fixed-wing, multi-engine Rfs Aviation LLC
Greer, South Carolina
Standard 2019-09-26 ValidFAA registration status code V: Valid registration. All codes
N442BN Robinson Helicopter
R44 II
Helicopter Parker Helicopter LLC
Watsonville, California
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N254R Commander Aircraft Co
114-B
Fixed-wing, single engine Nascar Aviation LLC
Silverado, California
Standard 2019-09-23 ValidFAA registration status code V: Valid registration. All codes
N25JF Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2019-09-23 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.