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.

Fitted to model families

Model families, as a table

	aircraft
Piper PA-32 Cherokee Six, Lance and Saratoga	1,059
Cessna 182 Skylane	978
Robinson R44	294
Piper PA-23 Apache and Aztec	175
Daher (Socata) TB-20	151
Maule M-7	108
Cessna 206 Stationair	99
Piper AEROSTAR 601	84
Rockwell International 114	78
Commander Aircraft Co 114	63
Maule M-6	47
Maule MT-7	42

Piper PA-32 Cherokee Six, Lance and Saratoga · Cessna 182 Skylane · Robinson R44 · Piper PA-23 Apache and Aztec · Daher (Socata) TB-20 · Maule M-7 · Cessna 206 Stationair · Piper AEROSTAR 601 · Rockwell International 114 · Commander Aircraft Co 114

Where they are owner's state

Texas420Florida398California295Delaware218North Carolina124Georgia123Michigan115Pennsylvania109Alaska109Alabama108

By state, as a table

	aircraft
Texas	420
Florida	398
California	295
Delaware	218
North Carolina	124
Georgia	123
Michigan	115
Pennsylvania	109
Alaska	109
Alabama	108

Kind of aircraft

Piston singles3,503 (83%)Piston twins410 (10%)Helicopters296 (7%)Turboprops9 (0.2%)

By kind, as a table

	aircraft	share
Piston singles	3,503	83%
Piston twins	410	10%
Helicopters	296	7%
Turboprops	9	0.2%

When the aircraft were built by decade

By decade built, as a table

	aircraft
1940	2
1950	13
1960	96
1970	797
1980	579
1990	748
2000	1,339
2010	78
2020	56

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

Failure reports by year, as a table

	reports
95	3
96	3
97	3
98	4
99	4
00	11
01	37
02	15
03	37
04	34
05	50
06	30
07	19
08	12
09	3
10	12
11	2
12	7
13	5
14	6
15	2
17	1
19	4
20	2
22	2
23	1
24	5
26	2

Parts most often reported as the reports name them

Magneto19Cylinder10Bearing8Gasket8Bolt7Boot7Actuator6Line6Pump6Baffle5

Parts most reported, as a table

	reports
Magneto	19
Cylinder	10
Bearing	8
Gasket	8
Bolt	7
Boot	7
Actuator	6
Line	6
Pump	6
Baffle	5

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

Piper PA-32 Cherokee Six, Lance and Saratoga 1,059 with this engine series
Cessna 182 Skylane 978 with this engine series
Robinson R44 294 with this engine series
Piper PA-23 Apache and Aztec 175 with this engine series
Daher (Socata) TB-20 151 with this engine series
Maule M-7 108 with this engine series
Cessna 206 Stationair 99 with this engine series
Piper AEROSTAR 601 84 with this engine series

Where they are

Texas 420 of these aircraft
Florida 398 of these aircraft
California 295 of these aircraft
Delaware 218 of these aircraft
North Carolina 124 of these aircraft

Biggest operators

Civil Air Patrol 55 of these aircraft
Southern Aircraft Consultancy INC Trustee 20 of these aircraft
Barr Air Patrol LLC 17 of these aircraft
International Air Services INC Trustee 16 of these aircraft
T A F Y Consulting 14 of these aircraft

Airworthiness

FAA orders naming the Lycoming IO-540 series 49 airworthiness directives
Failure reports on the Lycoming IO-540 series 316 reports since 1995

Analytics

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 model	Group	Owner and base	Certificate	Registered	Status
N9239N	Piper PA-32R-301	Fixed-wing, single engine	Rd Aviation LLC Fort Lauderdale, Florida	Standard	2013-04-03	Valid
N15KY	Piper PA-23-250	Fixed-wing, multi-engine	Co-owned owner Oklahoma	Standard	2013-04-02	Valid
N331AH	Robinson Helicopter R44 II	Helicopter	Armstrong Helicopters LLC Laredo, Texas	Standard	2013-04-01	Valid
N6486C	Piper PA-32RT-300	Fixed-wing, single engine	86 Charlie CORP Roscoe, Illinois	Standard	2013-03-28	Valid
N588SF	Robinson Helicopter R44 II	Helicopter	Intrepid Helicopters LLC Sylvania, Ohio	Standard	2013-03-27	Valid
N6183S	Cessna 182T	Fixed-wing, single engine	Farm Air LLC Gridley, California	Standard	2013-03-26	Valid
N1871S	Socata TB-20 TRINIDAD	Fixed-wing, single engine	Individual owner California	Standard	2013-03-20	Valid
N257SA	Piper PA-32-300	Fixed-wing, single engine	International Air Services INC Trustee Carson City, Nevada	Standard	2013-03-20	Valid
N490DL	David T Latham F-2 ROCKETS	Fixed-wing, single engine	Individual owner Florida	Experimental	2013-03-20	Valid
N2510K	Socata TB-20 TRINIDAD	Fixed-wing, single engine	Individual owner Kentucky	Standard	2013-03-14	Valid
N2094P	Piper PA-32RT-300	Fixed-wing, single engine	Individual owner Tennessee	Standard	2013-03-08	Valid
N47342	Piper PA-32R-300	Fixed-wing, single engine	Buckley Air LLC Plymouth, Massachusetts	Standard	2013-02-28	Valid
N244Z	Robinson Helicopter R44 II	Helicopter	C & M Gator Farm Holden, Louisiana	Standard	2013-02-27	Valid
N2320M	Piper PA-23-250	Fixed-wing, multi-engine	Akl Properties Westlake, Ohio	Standard	2013-02-22	Valid
N7268P	Cessna T206H	Fixed-wing, single engine	Surdex CORP Chesterfield, Missouri	Standard	2013-02-21	Valid
N210AV	Carter Aerospace Development PAV4	Rotorcraft	Individual owner Texas	Experimental	2013-02-15	Valid
N357Z	Cessna 182S	Fixed-wing, single engine	Cowden Flying Services INC Ft Worth, Texas	Standard	2013-02-15	Valid
N2401A	Cessna 182T	Fixed-wing, single engine	Individual owner Texas	Standard	2013-02-13	Valid
N5667D	Maule MX-7-235	Fixed-wing, single engine	Williams Field LLC Gig Harbor, Washington	Standard	2013-02-12	Valid
N5658K	Maule MX-7-235	Fixed-wing, single engine	Co-owned owner Arizona	Restricted	2013-02-08	Valid
N154MA	Estumkeda Ltd Dba Micco Acft MAC-145B	Fixed-wing, single engine	Sportsman Airpark INC Newberg, Oregon	Standard	2013-02-07	Valid
N200SF	Piper PA-32RT-300	Fixed-wing, single engine	Res Solutions INC Anderson, Indiana	Standard	2013-02-06	Valid
N526BL	Cessna 182S	Fixed-wing, single engine	Warren Flying Club INC Troy, Michigan	Standard	2013-02-04	Valid
N6372B	Cessna 182T	Fixed-wing, single engine	Cm Air LLC Wilmington, Delaware	Standard	2013-01-28	Valid
N784JC	Turner Andrew M RV-10	Fixed-wing, single engine	Individual owner Pennsylvania	Experimental	2013-01-25	Valid
N380MA	Cessna 182S	Fixed-wing, single engine	75 East Air LLC Valparaiso, Indiana	Standard	2013-01-15	Valid
N62LG	Cessna 182T	Fixed-wing, single engine	Scout Aviation LLC Alden, Iowa	Standard	2013-01-11	Valid
N18WN	King Flite Inc IBRAHIM	Fixed-wing, single engine	Sarah Business LLC Merritt Island, Florida	Experimental	2013-01-10	Valid
N218L	Aerofab Inc LAKE LA-250	Fixed-wing, single engine	Individual owner Florida	Standard	2013-01-10	Valid
N30956	Piper PA-32RT-300	Fixed-wing, single engine	Ought To Fly INC Litchfield, Illinois	Standard	2013-01-10	Valid
N7528R	Robinson Helicopter R44 II	Helicopter	Co-owned owner Texas	Standard	2013-01-10	Valid
N8137D	Piper PA-32-300	Fixed-wing, single engine	Lee'S Mobile Service INC Holt, Missouri	Standard	2013-01-10	Valid
N5340X	Cessna 182T	Fixed-wing, single engine	Agvest LLC Abingdon, Virginia	Standard	2012-12-27	Valid
N26613	Cessna 182S	Fixed-wing, single engine	Co-owned owner Oklahoma	Standard	2012-12-19	Valid
N2209P	Piper PA-23-250	Fixed-wing, multi-engine	Individual owner Louisiana	Standard	2012-12-17	Valid
N816WB	Piper PA-32-301	Fixed-wing, single engine	Northern Aggregate INC Bemidji, Minnesota	Standard	2012-12-12	Valid
N944LC	Robinson Helicopter R44 II	Helicopter	4Lc LLC Mcminnville, Oregon	Standard	2012-12-10	Valid
N609SD	Jones Scott D VELOCITY XLRG	Fixed-wing, single engine	Individual owner Wisconsin	Experimental	2012-12-06	Valid
N92BC	Piper PA-23-250	Fixed-wing, multi-engine	Robert Craig LLC Wilmington, Delaware	Standard	2012-12-04	Valid
N3053H	Piper PA-32RT-300	Fixed-wing, single engine	Gator Hounds LLC Winter Park, Florida	Standard	2012-12-03	Valid
N8034Z	Piper PA-32-301	Fixed-wing, single engine	Eight Ball Flying Club INC Van Nuys, California	Standard	2012-12-03	Valid
N2588M	Piper PA-32R-300	Fixed-wing, single engine	N-J Aviation LLC Forest, Virginia	Standard	2012-11-27	Valid
N262NJ	Jeremiah Jackson VANS RV-10	Fixed-wing, single engine	J2Environmental LLC Del Mar, California	Experimental	2012-11-27	Valid
N41480	Piper PA-32R-301	Fixed-wing, single engine	Tradewind Aviation CO INC Blue Bell, Pennsylvania	Standard	2012-11-27	Valid
N207SA	Cessna 182S	Fixed-wing, single engine	Dyer LLC Dyer, Tennessee	Standard	2012-11-21	Valid
N5692V	Piper PA-32R-300	Fixed-wing, single engine	I N K M & Associates Lllp Columbia, Missouri	Standard	2012-11-20	Valid
N824NM	Cessna 182T	Fixed-wing, single engine	Individual owner New Jersey	Standard	2012-11-14	Valid
N9695C	Piper PA-32-300	Fixed-wing, single engine	Trhb Enterprises LLC Danville, Pennsylvania	Standard	2012-11-14	Valid
N74WW	Piper PA-32R-301	Fixed-wing, single engine	Whitewind CO Windsor Locks, Connecticut	Standard	2012-11-08	Valid
N3062R	Piper PA-32RT-300	Fixed-wing, single engine	Buddys Aviation LLC East Bernstadt, Kentucky	Standard	2012-11-02	Valid
N679DM	Piper PA-32-300	Fixed-wing, single engine	Columbia Whiskey Bravo LLC Americus, Georgia	Standard	2012-10-26	Valid
N112JJ	Robinson Helicopter R44 II	Helicopter	November Alpha LLC Dover, Delaware	Standard	2012-10-24	Valid
N213CM	Cessna 182S	Fixed-wing, single engine	Co-owned owner North Dakota	Standard	2012-10-24	Valid
N540BB	Bsr-Hess Race Cars Inc GLASAIR III	Fixed-wing, single engine	Individual owner North Carolina	Experimental	2012-10-23	Valid
N26264	Cessna 182S	Fixed-wing, single engine	Edb Air INC Wilsonville, Oregon	Standard	2012-10-22	Valid
N84500	Piper PA-32R-301	Fixed-wing, single engine	Bank of Perry County Lobelville, Tennessee	Standard	2012-10-12	Valid
N207JT	Piper AEROSTAR 600	Fixed-wing, multi-engine	Individual owner Maine	Standard	2012-10-11	Valid
N1057T	Cessna 182T	Fixed-wing, single engine	Mclane Trailer Sales INC Poplar Bluff, Missouri	Standard	2012-10-02	Valid
N861SF	Cessna 182T	Fixed-wing, single engine	Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma	Standard	2012-10-02	Valid
N9210N	Piper PA-32R-301	Fixed-wing, single engine	Individual owner Indiana	Standard	2012-10-02	Valid
N1033C	Maule M-7-235C	Fixed-wing, single engine	Individual owner Washington	Standard	2012-09-27	Valid
N118YL	Robinson Helicopter R44 II	Helicopter	Executive Helicopters INC Myrtle Beach, South Carolina	Standard	2012-09-27	Valid
N190GT	Socata TB-20 TRINIDAD	Fixed-wing, single engine	Co-owned owner Louisiana	Standard	2012-09-27	Valid
N8101S	Shaw George Alan VELOCITY	Fixed-wing, single engine	Airborne Ministries Littlefork, Minnesota	Experimental	2012-09-27	Valid
N6135B	Iar Sa Brasov IAR 823	Fixed-wing, single engine	Individual owner North Carolina	Experimental	2012-09-26	Valid
N9220B	Piper PA-32R-301	Fixed-wing, single engine	Individual owner North Dakota	Standard	2012-09-25	Valid
N2181N	Cessna 182T	Fixed-wing, single engine	State of Oregon Salem, Oregon	Standard	2012-09-18	Valid
N442PD	Robinson Helicopter R44 II	Helicopter	Desoto Parish Sheriff Office Mansfield, Louisiana	Standard	2012-09-18	Valid
N411LP	Cessna 182T	Fixed-wing, single engine	Plan A LTD Middletown, Delaware	Standard	2012-09-17	Valid
N99F	Fowler Robert R SWEARINGEN SX300	Fixed-wing, single engine	Rainbow Sports INC Enid, Oklahoma	Experimental	2012-09-17	Valid
N4331C	Piper PA-32R-301	Fixed-wing, single engine	Lance Air INC Taylorsville, Kentucky	Standard	2012-08-29	Valid
N8802R	Eagle Aircraft Co EAGLE DW-1	Fixed-wing, single engine	Pacific Kota LLC Beresford, South Dakota	Restricted	2012-08-24	Valid
N47743	Piper PA-32R-300	Fixed-wing, single engine	Majic T Air LLC Bradfordwoods, Pennsylvania	Standard	2012-08-17	Valid
N233ME	Cessna 182S	Fixed-wing, single engine	Eight Ball Flying Club Van Nuys, California	Standard	2012-08-07	Valid
N304JT	Aero Commander 500-B	Fixed-wing, multi-engine	Central Airlines INC Leawood, Kansas	Standard	2012-07-31	Valid
N5652U	Maule M-6-235	Fixed-wing, single engine	Lions Flyers INC Enterprise, Oregon	Standard	2012-07-31	Valid
N80MM	Lipscomb STARDUSTER TOO	Fixed-wing, single engine	Individual owner California	Experimental	2012-07-25	Valid
N399ME	Cessna 182S	Fixed-wing, single engine	Sound Sleep Clinic Pllc Bainbridge Island, Washington	Standard	2012-07-24	Valid
N696DG	Maule MT-7-235	Fixed-wing, single engine	Individual owner Texas	Standard	2012-07-20	Valid
N823LC	Cessna 182S	Fixed-wing, single engine	Bonafide LLC Wilmington, Delaware	Standard	2012-07-20	Valid
N26TB	Socata TB-20 TRINIDAD	Fixed-wing, single engine	Individual owner California	Standard	2012-07-17	Valid
N356BF	Cessna 182T	Fixed-wing, single engine	Withheld at owner's request	Standard	2012-07-09	Valid
N700SE	Conrad Booze RV-10	Fixed-wing, single engine	Individual owner Georgia	Experimental	2012-07-03	Valid
N628GE	Cessna T206H	Fixed-wing, single engine	Jacob LLC Oakland, New Jersey	Standard	2012-06-28	Valid
N925WL	Robinson Helicopter R44 II	Helicopter	Crosswind Leasing LLC Prescott, Arizona	Standard	2012-06-28	Valid
N9410C	Piper PA-32RT-300	Fixed-wing, single engine	Sierra Alpha Group LLC Lewes, Delaware	Standard	2012-06-27	Valid
N74JD	Socata TB-20 TRINIDAD	Fixed-wing, single engine	Individual owner New York	Standard	2012-06-25	Valid
N90346	Piper PA-23-250	Fixed-wing, multi-engine	Individual owner Texas	Standard	2012-06-19	Valid
N329JK	Robinson Helicopter R44 II	Helicopter	Emerald City Aircraft Leasing INC Port Orchard, Washington	Standard	2012-06-15	Valid
N2217L	Cessna 182T	Fixed-wing, single engine	International Air Services INC Trustee Carson City, Nevada	Standard	2012-06-12	Valid
N6DG	Gulfstream American Corp AA-5B	Fixed-wing, single engine	Co-owned owner Ohio	Standard	2012-06-06	Valid
N137SD	Piper PA-32-301	Fixed-wing, single engine	Individual owner New Jersey	Standard	2012-06-05	Valid
N189TW	Robinson Helicopter R44 II	Helicopter	Holt Helicopters INC Uvalde, Texas	Standard	2012-06-04	Valid
N88024	Eagle Aircraft Co EAGLE DW-1	Fixed-wing, single engine	Individual owner South Dakota	Restricted	2012-06-01	Valid
N8802Z	Eagle Aircraft Co EAGLE DW-1	Fixed-wing, single engine	Individual owner South Dakota	Restricted	2012-06-01	Valid
N8803R	Eagle Aircraft Co EAGLE DW-1	Fixed-wing, single engine	Individual owner South Dakota	Restricted	2012-06-01	Valid
N8807Z	Eagle Aircraft Co.-Bellanca EAGLE DW-1	Fixed-wing, single engine	Individual owner South Dakota	Restricted	2012-06-01	Valid
N32DA	Aero Rampart STEEN SKYBOLT	Fixed-wing, single engine	Individual owner Oregon	Experimental	2012-05-18	Valid
N33PS	Piper PA-32RT-300	Fixed-wing, single engine	N33Ps LLC Shoemakersville, Pennsylvania	Standard	2012-05-18	Valid
N784DR	Cessna 182T	Fixed-wing, single engine	Co-owned owner Iowa	Standard	2012-05-18	Valid

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.

	reports
95	3
96	3
97	3
98	4
99	4
00	11
01	37
02	15
03	37
04	34
05	50
06	30
07	19
08	12
09	3
10	12
11	2
12	7
13	5
14	6
15	2
17	1
19	4
20	2
22	2
23	1
24	5
26	2

	reports
95	3
96	3
97	3
98	4
99	4
00	11
01	37
02	15
03	37
04	34
05	50
06	30
07	19
08	12
09	3
10	12
11	2
12	7
13	5
14	6
15	2
17	1
19	4
20	2
22	2
23	1
24	5
26	2

	reports
95	3
96	3
97	3
98	4
99	4
00	11
01	37
02	15
03	37
04	34
05	50
06	30
07	19
08	12
09	3
10	12
11	2
12	7
13	5
14	6
15	2
17	1
19	4
20	2
22	2
23	1
24	5
26	2