Lycoming IO-540-AE1A5
1,037 aircraft on the U.S. register carry a Lycoming IO-540-AE1A5 engine, rated at about 260 horsepower. The Robinson R44 is the model most often fitted with it (1,037 aircraft). The aircraft carrying it were built between 2003 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-AE1A5. FAA spelling: IO-540-AE1A5.
Where they are owner's state
Texas160Delaware95Alaska73Florida68California67Montana44Oklahoma27Illinois26Arizona26Utah23
Kind of aircraft
Helicopters1,037 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming IO-540-AE1A5 the component layer
The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 21 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 924 failure reports with the FAA since 1995, 249 of them in the last ten years.
FAA orders 21 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
2017-08-152017-16-11 · Reciprocating Engine Power Section · engine
2015-11-032015-19-07 · Fuel injector fuel lines · engine
2012-10-242012-19-01 · Crankshafts · engine
Failure reports 924 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Pump115Tachometer62Servo55Starter51Magneto42Starter Gen40Bearing32Controller24Reservoir24Actuator22
Latest reports
2026-06-22Pump: inoperative
2025-12-05Cylinder: scored
2024-03-01Boot: cracked
2023-10-19Warning Unit: defective
2023-10-17Muffler: distorted
Certificates and bulletins
1E4Type certificate held by Lycoming Engines · 81 models listed · revised February 28, 2018
Safety bulletins 6 · 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,...
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft
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
- Robinson R44 1,037 with this engine series
Where they are
- Texas 160 of these aircraft
- Delaware 95 of these aircraft
- Alaska 73 of these aircraft
- Florida 68 of these aircraft
- California 67 of these aircraft
Biggest operators
- Spitzer Helicopter LLC 17 of these aircraft
- Southern Utah University 15 of these aircraft
- Sky Helicopters INC 12 of these aircraft
- Aircraft Guaranty CORP Trustee 11 of these aircraft
- Sky Solutions LLC 9 of these aircraft
Airworthiness
- FAA orders naming the Lycoming IO-540-AE1A5 21 airworthiness directives
- Failure reports on the Lycoming IO-540-AE1A5 924 reports since 1995
Analytics
These connections as data: /graph/engine/lycoming-io-540-ae1a5.json · about the eFlight graph.
Aircraft newest certificates first · 1,037
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N248DL | Robinson Helicopter R44 II |
Helicopter | Apple Hill Associates LLC Dover, Delaware |
Standard | 2018-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N45SL | Robinson Helicopter R44 II |
Helicopter | Webb Aviation LLC Watonga, Oklahoma |
Standard | 2018-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N440TT | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Puerto Rico |
Standard | 2018-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N285RG | Robinson Helicopter R44 II |
Helicopter | Mf Helicopters LLC East Troy, Wisconsin |
Multiple | 2018-07-20 | ValidFAA registration status code V: Valid registration. All codes |
| N405RB | Robinson Helicopter R44 II |
Helicopter | Owens Aviation LLC Elm City, North Carolina |
Standard | 2018-07-12 | ValidFAA registration status code V: Valid registration. All codes |
| N957CS | Robinson Helicopter R44 II |
Helicopter | Time Machine LLC Plymouth, Michigan |
Standard | 2018-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N149PK | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Texas |
Standard | 2018-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N447PW | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2018-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N99603 | Robinson Helicopter R44 II |
Helicopter | Alpine Air Alaska LLC Girdwood, Alaska |
Standard | 2018-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N99645 | Robinson Helicopter R44 II |
Helicopter | Alpine Air Alaska LLC Girdwood, Alaska |
Standard | 2018-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N99693 | Robinson Helicopter R44 II |
Helicopter | Alpine Air Alaska LLC Girdwood, Alaska |
Standard | 2018-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N335PD | Robinson Helicopter R44 II |
Helicopter | Rogue Aviation LLC Newport Beach, California |
Standard | 2018-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N155H | Robinson Helicopter R44 II |
Helicopter | Bering Air INC Nome, Alaska |
Standard | 2018-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N443RP | Robinson Helicopter R44 II |
Helicopter | Richard e Pierson Construction CO Pilesgrove, New Jersey |
Standard | 2018-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N441DH | Robinson Helicopter R44 II |
Helicopter | Dirk Henderson LLC Palm Harbor, Florida |
Standard | 2018-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N434DE | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Woodland Hills, California |
Standard | 2018-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N3238R | Robinson Helicopter R44 II |
Helicopter | Sublime Aerials LLC Madison, Wisconsin |
Standard | 2018-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N21LA | Robinson Helicopter R44 II |
Helicopter | Rotor Leasing LLC Indianapolis, Indiana |
Standard | 2018-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N442CB | Robinson Helicopter R44 II |
Helicopter | Cedar Ridge Aviation LLC Knox City, Texas |
Restricted | 2018-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N408RG | Robinson Helicopter R44 II |
Helicopter | Individual owner Iowa |
Standard | 2018-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N445KP | Robinson Helicopter R44 II |
Helicopter | Hawaii Pacific Aviation INC Kailua Kona, Hawaii |
Standard | 2018-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N525MD | Robinson Helicopter R44 II |
Helicopter | Hawaii Pacific Aviation INC Kailua Kona, Hawaii |
Standard | 2018-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N212JB | Robinson Helicopter R44 II |
Helicopter | Cedar Ridge Aviation LLC Knox City, Texas |
Restricted | 2018-02-08 | ValidFAA registration status code V: Valid registration. All codes |
| N395CE | Robinson Helicopter R44 II |
Helicopter | Blue Bird Aviation LLC Anchorage, Alaska |
Standard | 2018-02-08 | ValidFAA registration status code V: Valid registration. All codes |
| N1282S | Robinson Helicopter R44 II |
Helicopter | Individual owner Illinois |
Standard | 2018-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N25ZF | Robinson Helicopter R44 II |
Helicopter | Heligray LLC Kalispell, Montana |
Standard | 2018-01-09 | ValidFAA registration status code V: Valid registration. All codes |
| N777DZ | Robinson Helicopter R44 II |
Helicopter | Provo Helicopters LLC Fenwick Island, Delaware |
Standard | 2017-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N408CL | Robinson Helicopter R44 II |
Helicopter | Executive Helicopter Tours INC Saint Petersburg, Florida |
Standard | 2017-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N442TH | Robinson Helicopter R44 II |
Helicopter | Utah State University Logan, Utah |
Multiple | 2017-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N806BC | Robinson Helicopter R44 II |
Helicopter | Bravo Charlie LLC Auburn, California |
Standard | 2017-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N948WL | Robinson Helicopter R44 II |
Helicopter | W F Aviation LLC Yorktown, Texas |
Standard | 2017-11-08 | ValidFAA registration status code V: Valid registration. All codes |
| N87MD | Robinson Helicopter R44 II |
Helicopter | Kachemak Bay Flying Service INC Temple, Texas |
Standard | 2017-10-11 | ValidFAA registration status code V: Valid registration. All codes |
| N143VA | Robinson Helicopter R44 II |
Helicopter | Kaman Arms LLC Paron, Arkansas |
Standard | 2017-09-29 | ValidFAA registration status code V: Valid registration. All codes |
| N1422D | Robinson Helicopter R44 II |
Helicopter | Black Bird Leasing LLC Wilmington, Delaware |
Standard | 2017-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N992TP | Robinson Helicopter R44 II |
Helicopter | 2T Partnership LTD Pecos, Texas |
Standard | 2017-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N584AB | Robinson Helicopter R44 II |
Helicopter | Smith Helicopters INC Cotulla, Texas |
Standard | 2017-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N632NS | Robinson Helicopter R44 II |
Helicopter | Stella Air INC Wyoming, Pennsylvania |
Standard | 2017-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N4125T | Robinson Helicopter R44 II |
Helicopter | Summerskyz INC Saint Joseph, Illinois |
Multiple | 2017-08-16 | ValidFAA registration status code V: Valid registration. All codes |
| N787AJ | Robinson Helicopter R44 II |
Helicopter | Hawaii Pacific Aviation INC Kailua Kona, Hawaii |
Standard | 2017-08-15 | ValidFAA registration status code V: Valid registration. All codes |
| N135KT | Robinson Helicopter R44 II |
Helicopter | Mission Destiny Helicopter LLC Red Lion, Pennsylvania |
Standard | 2017-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N41631 | Robinson Helicopter R44 II |
Helicopter | Submissive Air INC Deadwood, South Dakota |
Standard | 2017-08-10 | ValidFAA registration status code V: Valid registration. All codes |
| N644CH | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Alaska |
Standard | 2017-08-10 | ValidFAA registration status code V: Valid registration. All codes |
| N449MS | Robinson Helicopter R44 II |
Helicopter | Ms Aviation LLC Los Angeles, California |
Standard | 2017-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N197SU | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2017-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N87HR | Robinson Helicopter R44 II |
Helicopter | Lat 29 Aviation LLC El Campo, Texas |
Standard | 2017-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N558W | Robinson Helicopter R44 II |
Helicopter | Manticore LLC Alton, New Hampshire |
Standard | 2017-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N998TP | Robinson Helicopter R44 II |
Helicopter | Bering Air INC Nome, Alaska |
Standard | 2017-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N115RH | Robinson Helicopter R44 II |
Helicopter | Regional Helicopters LLC Anchorage, Alaska |
Standard | 2017-07-05 | ValidFAA registration status code V: Valid registration. All codes |
| N422DX | Robinson Helicopter R44 II |
Helicopter | Merten Aviation Services LLC Holtville, California |
Standard | 2017-07-03 | ValidFAA registration status code V: Valid registration. All codes |
| N211DP | Robinson Helicopter R44 II |
Helicopter | Buckman Holdings LLC Centralia, Missouri |
Restricted | 2017-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N518SJ | Robinson Helicopter R44 II |
Helicopter | Woodward Aviation LLC Alpine, Texas |
Standard | 2017-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N931TG | Robinson Helicopter R44 II |
Helicopter | Mdr Helicopter LLC Atkinson, Nebraska |
Standard | 2017-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N907YK | Robinson Helicopter R44 II |
Helicopter | Alaska Channel INC Anchorage, Alaska |
Standard | 2017-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N4186Y | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Alaska |
Standard | 2017-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N316TC | Robinson Helicopter R44 II |
Helicopter | Emerald City Aircraft Leasing INC Port Orchard, Washington |
Standard | 2017-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N452ME | Robinson Helicopter R44 II |
Helicopter | Magnum Leasing LLC Waterford, Michigan |
Standard | 2017-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N544AT | Robinson Helicopter R44 II |
Helicopter | Armstrong Helicopters LLC Laredo, Texas |
Standard | 2017-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N397SU | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2017-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N20MY | Robinson Helicopter R44 II |
Helicopter | Large Aircraft LLC Hallandale Beach, Florida |
Standard | 2017-01-09 | ValidFAA registration status code V: Valid registration. All codes |
| N4204X | Robinson Helicopter R44 II |
Helicopter | Aircraft Equipment Storage LLC Duson, Louisiana |
Standard | 2017-01-03 | ValidFAA registration status code V: Valid registration. All codes |
| N44FG | Robinson Helicopter R44 II |
Helicopter | Saratoga Helicopter LLC Queensbury, New York |
Standard | 2016-12-29 | ValidFAA registration status code V: Valid registration. All codes |
| N4174L | Robinson Helicopter R44 II |
Helicopter | Cst & Sons LLC South Barrington, Illinois |
Standard | 2016-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N10QH | Robinson Helicopter R44 II |
Helicopter | Comanche Maverick Air LLC Houston, Texas |
Standard | 2016-11-16 | ValidFAA registration status code V: Valid registration. All codes |
| N368MS | Robinson Helicopter R44 II |
Helicopter | Individual owner New York |
Standard | 2016-11-16 | ValidFAA registration status code V: Valid registration. All codes |
| N744EH | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2016-11-14 | ValidFAA registration status code V: Valid registration. All codes |
| N3069N | Robinson Helicopter R44 II |
Helicopter | Individual owner Alaska |
Standard | 2016-10-26 | ValidFAA registration status code V: Valid registration. All codes |
| N219CR | Robinson Helicopter R44 II |
Helicopter | Hot Fat Helo LLC Hampton, New Hampshire |
Standard | 2016-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N344JG | Robinson Helicopter R44 II |
Helicopter | Smith Helicopters INC Cotulla, Texas |
Standard | 2016-10-19 | ValidFAA registration status code V: Valid registration. All codes |
| N86TJ | Robinson Helicopter R44 II |
Helicopter | Signal Hill Air LLC Durham, North Carolina |
Multiple | 2016-10-19 | ValidFAA registration status code V: Valid registration. All codes |
| N831VA | Robinson Helicopter R44 |
Helicopter | Travel Systems LLC Boerne, Texas |
Multiple | 2016-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N7094L | Robinson Helicopter R44 II |
Helicopter | Individual owner Illinois |
Multiple | 2016-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N457WT | Robinson Helicopter R44 II |
Helicopter | Blair Aviation LLC Essex, Missouri |
Standard | 2016-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N741LS | Robinson Helicopter R44 II |
Helicopter | Rs Aviation Services Moorpark, California |
Standard | 2016-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N3231J | Robinson Helicopter R44 II |
Helicopter | November Alpha LLC Dover, Delaware |
Standard | 2016-09-20 | ValidFAA registration status code V: Valid registration. All codes |
| N267AW | Robinson Helicopter R44 II |
Helicopter | Executive Helicopters INC Myrtle Beach, South Carolina |
Standard | 2016-07-27 | ValidFAA registration status code V: Valid registration. All codes |
| N723VC | Robinson Helicopter R44 II |
Helicopter | Vaught Air LLC Crane, Missouri |
Standard | 2016-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N754R | Robinson Helicopter R44 II |
Helicopter | Individual owner North Dakota |
Standard | 2016-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N517KT | Robinson Helicopter R44 II |
Helicopter | Air-One Helicopters LLC Lincoln Park, Michigan |
Standard | 2016-07-20 | ValidFAA registration status code V: Valid registration. All codes |
| N805GB | Robinson Helicopter R44 II |
Helicopter | Gary Boyd Farms Pearsall, Texas |
Standard | 2016-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N440DR | Robinson Helicopter R44 II |
Helicopter | Dakota Rotors LLC Custer, South Dakota |
Standard | 2016-07-12 | ValidFAA registration status code V: Valid registration. All codes |
| N75WD | Robinson Helicopter R44 II |
Helicopter | Tarrant Regional Water District Fort Worth, Texas |
Standard | 2016-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N272SE | Robinson Helicopter R44 II |
Helicopter | Foley Aviation LLC Evans City, Pennsylvania |
Standard | 2016-07-05 | ValidFAA registration status code V: Valid registration. All codes |
| N96XW | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2016-07-05 | ValidFAA registration status code V: Valid registration. All codes |
| N930DK | Robinson Helicopter R44 II |
Helicopter | City of Lakewood Lakewood, California |
Standard | 2016-06-14 | ValidFAA registration status code V: Valid registration. All codes |
| N456ML | Robinson Helicopter R44 II |
Helicopter | Langbehn Land & Cattle CO INC Wolsey, South Dakota |
Standard | 2016-05-27 | ValidFAA registration status code V: Valid registration. All codes |
| N411TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2016-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N1862Z | Robinson Helicopter R44 II |
Helicopter | Individual owner Alaska |
Standard | 2016-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N78FT | Robinson Helicopter R44 II |
Helicopter | Trl Aviation LLC Little Rock, Arkansas |
Restricted | 2016-03-23 | ValidFAA registration status code V: Valid registration. All codes |
| N14QA | Robinson Helicopter R44 II |
Helicopter | Alba Leasing Services LLC Scottsdale, Arizona |
Standard | 2016-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N4386W | Robinson Helicopter R44 II |
Helicopter | Concho Aviation LLC Sterling City, Texas |
Standard | 2016-03-19 | ValidFAA registration status code V: Valid registration. All codes |
| N144GH | Robinson Helicopter R44 II |
Helicopter | Track Up Trading CORP Cheyenne, Wyoming |
Standard | 2016-03-02 | ValidFAA registration status code V: Valid registration. All codes |
| N151HM | Robinson Helicopter R44 II |
Helicopter | Plane Fun INC Tr Trustee Snellville, Georgia |
Standard | 2016-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N58LE | Robinson Helicopter R44 II |
Helicopter | Veracity Aviation LLC Seguin, Texas |
Standard | 2016-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N608GB | Robinson Helicopter R44 II |
Helicopter | Aircraft Management Group Intl CORP Trustee Wilmington, Delaware |
Standard | 2016-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N444AJ | Robinson Helicopter R44 II |
Helicopter | Aj2 Air LLC Arroyo Grande, California |
Standard | 2016-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N534J | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2015-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N3026L | Robinson Helicopter R44 II |
Helicopter | Bcmc LLC Kalispell, Montana |
Standard | 2015-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N6HZ | Robinson Helicopter R44 II |
Helicopter | Grace River Ranch LLC St Joseph, Missouri |
Standard | 2015-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N433TB | Robinson Helicopter R44 II |
Helicopter | Triangle Aviation LLC Minonk, Illinois |
Standard | 2015-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N4377U | Robinson Helicopter R44 II |
Helicopter | Talkeetna Air Taxi INC Talkeetna, Alaska |
Standard | 2015-11-04 | ValidFAA registration status code V: Valid registration. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.