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 |
|---|---|---|---|---|---|---|
| N893P | Robinson Helicopter R44 II |
Helicopter | Rs Aviation Services Moorpark, California |
Standard | 2015-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N130SK | Robinson Helicopter R44 II |
Helicopter | City of Lakewood Lakewood, California |
Standard | 2015-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N423PM | Robinson Helicopter R44 II |
Helicopter | Men Aviation LLC Foristell, Missouri |
Standard | 2015-08-17 | ValidFAA registration status code V: Valid registration. All codes |
| N4783R | Robinson Helicopter R44 II |
Helicopter | Fly In Helicopters LLC Wilmington, Delaware |
Standard | 2015-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N4312G | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2015-08-03 | ValidFAA registration status code V: Valid registration. All codes |
| N31551 | Robinson Helicopter R44 II |
Helicopter | Hawaii Pacific Aviation INC Kailua Kona, Hawaii |
Standard | 2015-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N415RP | Robinson Helicopter R44 II |
Helicopter | Rotorpro LLC Sevierville, Tennessee |
Standard | 2015-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N506HS | Robinson Helicopter R44 II |
Helicopter | Chordwise Aviation LLC Sedro Woolley, Washington |
Standard | 2015-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N3233E | Robinson Helicopter R44 II |
Helicopter | Silver Star Helicopters LLC El Campo, Texas |
Restricted | 2015-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N440VB | Robinson Helicopter R44 II |
Helicopter | Bracewell Enterprises LLC Lewes, Delaware |
Standard | 2015-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N637CS | Robinson Helicopter R44 II |
Helicopter | Boardman Air Service LLC Henderson, Nebraska |
Standard | 2015-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N4164Q | Robinson Helicopter R44 II |
Helicopter | Pollux Aviation LTD Wasilla, Alaska |
Standard | 2015-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N96743 | Robinson Helicopter R44 II |
Helicopter | Standard | 2015-04-28 | ValidFAA registration status code V: Valid registration. All codes | |
| N7081M | Robinson Helicopter R44 II |
Helicopter | Collective Up Rmc LLC Holiday, Florida |
Standard | 2015-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N195SH | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Woodland Hills, California |
Standard | 2015-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N3181Q | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Woodland Hills, California |
Standard | 2015-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N4237X | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Woodland Hills, California |
Standard | 2015-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N883WR | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Woodland Hills, California |
Standard | 2015-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N328V | Robinson Helicopter R44 II |
Helicopter | Rotors Away LLC Bayside, New York |
Standard | 2015-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N633CC | Robinson Helicopter R44 II |
Helicopter | Godspeed Leasing LLC Fairbanks, Alaska |
Standard | 2015-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N220GG | Robinson Helicopter R44 II |
Helicopter | Individual owner California |
Standard | 2015-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N476NH | Robinson Helicopter R44 II |
Helicopter | Individual owner Illinois |
Multiple | 2015-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N446HS | Robinson Helicopter R44 II |
Helicopter | US Department of Agriculture College Station, Texas |
Standard | 2015-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N272JW | Robinson Helicopter R44 II |
Helicopter | Global Aerials INC Pembroke Pines, Florida |
Standard | 2015-01-27 | ValidFAA registration status code V: Valid registration. All codes |
| N770CQ | Robinson Helicopter R44 II |
Helicopter | Global Aerials INC Pembroke Pines, Florida |
Standard | 2015-01-21 | ValidFAA registration status code V: Valid registration. All codes |
| N544BB | Robinson Helicopter R44 II |
Helicopter | Veracity Aviation LLC Seguin, Texas |
Standard | 2015-01-14 | ValidFAA registration status code V: Valid registration. All codes |
| N726W | Robinson Helicopter R44 II |
Helicopter | Michelesaire INC Wilmington, Delaware |
Standard | 2014-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N224RB | Robinson Helicopter R44 II |
Helicopter | R44 LLC Allentown, Pennsylvania |
Standard | 2014-12-16 | ValidFAA registration status code V: Valid registration. All codes |
| N888UH | Robinson Helicopter R44 II |
Helicopter | Alba Aviation Services INC Scottsdale, Arizona |
Standard | 2014-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N4439U | Robinson Helicopter R44 II |
Helicopter | Individual owner Wisconsin |
Standard | 2014-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N4450W | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2014-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N700UH | Robinson Helicopter R44 II |
Helicopter | Alba Aviation Services Scottsdale, Arizona |
Standard | 2014-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N797DM | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Kansas |
Standard | 2014-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N826CL | Robinson Helicopter R44 II |
Helicopter | C S Flying Service LLC Carlsbad, New Mexico |
Standard | 2014-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N720SM | Robinson Helicopter R44 II |
Helicopter | Individual owner Alaska |
Standard | 2014-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N460TJ | Robinson Helicopter R44 II |
Helicopter | Vertical Ventures Aviation LLC Franconia, New Hampshire |
Standard | 2014-07-07 | ValidFAA registration status code V: Valid registration. All codes |
| N3020T | Robinson Helicopter R44 II |
Helicopter | Regional Helicopters LLC Anchorage, Alaska |
Standard | 2014-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N3055Y | Robinson Helicopter R44 II |
Helicopter | Executive Helicopters INC Myrtle Beach, South Carolina |
Standard | 2014-07-01 | ValidFAA registration status code V: Valid registration. All codes |
| N400UH | Robinson Helicopter R44 II |
Helicopter | Uhi INC Provo, Utah |
Standard | 2014-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N215DC | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Woodland Hills, California |
Standard | 2014-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N117LE | Robinson Helicopter R44 II |
Helicopter | Leading Edge Aviation INC Bend, Oregon |
Standard | 2014-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N999UH | Robinson Helicopter R44 II |
Helicopter | Alba Aviation Services INC Scottsdale, Arizona |
Standard | 2014-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N255VS | Robinson Helicopter R44 II |
Helicopter | Vertical Solutions LLC Valdez, Alaska |
Standard | 2014-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N44XH | Robinson Helicopter R44 II |
Helicopter | Pelican Island Air Leasing INC Bryson City, North Carolina |
Standard | 2014-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N507HS | Robinson Helicopter R44 II |
Helicopter | Individual owner Connecticut |
Standard | 2014-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7031V | Robinson Helicopter R44 II |
Helicopter | Warren W Wainwright INC Merced, California |
Standard | 2014-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N442HL | Robinson Helicopter R44 II |
Helicopter | Individual owner Colorado |
Standard | 2014-02-20 | ValidFAA registration status code V: Valid registration. All codes |
| N892SA | Robinson Helicopter R44 II |
Helicopter | Shier Aviation CORP San Diego, California |
Standard | 2014-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N829DB | Robinson Helicopter R44 II |
Helicopter | Individual owner Florida |
Standard | 2013-11-01 | ValidFAA registration status code V: Valid registration. All codes |
| N844AK | Robinson Helicopter R44 II |
Helicopter | Quicksilver Air INC Fairbanks, Alaska |
Standard | 2013-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N801TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2013-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N336ED | Robinson Helicopter R44 II |
Helicopter | Advanced Therapy Products INC Richmond, Virginia |
Standard | 2013-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N447PA | Robinson Helicopter R44 II |
Helicopter | Pollux Aviation LTD Wasilla, Alaska |
Standard | 2013-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N321TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2013-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N745RG | Robinson Helicopter R44 II |
Helicopter | Rio Grande Helicopters INC Laredo, Texas |
Standard | 2013-03-01 | ValidFAA registration status code V: Valid registration. All codes |
| N48WF | Robinson Helicopter R44 II |
Helicopter | Earlybird Aerial Services LLC Goodfield, Illinois |
Multiple | 2013-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N744TP | Robinson Helicopter R44 II |
Helicopter | Individual owner Maine |
Standard | 2013-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N794YT | Robinson Helicopter R44 II |
Helicopter | November Alpha LLC Dover, Delaware |
Standard | 2013-01-15 | ValidFAA registration status code V: Valid registration. All codes |
| N7034J | Robinson Helicopter R44 II |
Helicopter | Dmp Leasing LLC Madera, California |
Standard | 2012-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N877DR | Robinson Helicopter R44 II |
Helicopter | Cline Air Services LLC Ellensburg, Washington |
Restricted | 2012-11-09 | ValidFAA registration status code V: Valid registration. All codes |
| N752PK | Robinson Helicopter R44 II |
Helicopter | Individual owner New Hampshire |
Standard | 2012-08-17 | ValidFAA registration status code V: Valid registration. All codes |
| N441PD | Robinson Helicopter R44 II |
Helicopter | Baton Rouge Police Department Baton Rouge, Louisiana |
Standard | 2012-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N555EL | Robinson Helicopter R44 II |
Helicopter | Pollux Aviation LTD Wasilla, Alaska |
Standard | 2012-06-22 | ValidFAA registration status code V: Valid registration. All codes |
| N944DK | Robinson Helicopter R44 II |
Helicopter | Lsd 944 LLC Norfolk, Virginia |
Standard | 2012-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N28HH | Robinson Helicopter R44 II |
Helicopter | Smith Helicopters INC Cotulla, Texas |
Standard | 2012-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N73FL | Robinson Helicopter R44 II |
Helicopter | Mccool Air Service INC Mc Cool Junction, Nebraska |
Standard | 2012-03-20 | ValidFAA registration status code V: Valid registration. All codes |
| N121TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Eustace, Texas |
Standard | 2012-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N4377X | Robinson Helicopter R44 II |
Helicopter | Dk Air LLC Brookings, Oregon |
Standard | 2012-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N969BT | Robinson Helicopter R44 II |
Helicopter | Psr Air Services LLC Dallas, Texas |
Standard | 2012-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N443SA | Robinson Helicopter R44 II |
Helicopter | November Alpha LLC Los Angeles, California |
Standard | 2011-10-11 | ValidFAA registration status code V: Valid registration. All codes |
| N91AV | Robinson Helicopter R44 II |
Helicopter | 2010 Leasing Group LLC Torrance, California |
Standard | 2011-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N444NC | Robinson Helicopter R44 II |
Helicopter | Charlie Papa LLC Van Nuys, California |
Standard | 2011-08-31 | ValidFAA registration status code V: Valid registration. All codes |
| N121ME | Robinson Helicopter R44 II |
Helicopter | Evergreen Empire LLC Delano, California |
Standard | 2011-07-27 | ValidFAA registration status code V: Valid registration. All codes |
| N4497V | Robinson Helicopter R44 II |
Helicopter | Diamond H Ranches LP Gallatin Gateway, Montana |
Standard | 2011-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N444ML | Robinson Helicopter R44 II |
Helicopter | Co-owned owner California |
Standard | 2010-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N991TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2010-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N25BA | Robinson Helicopter R44 II |
Helicopter | Arkansas Valley Feathers INC California, Missouri |
Standard | 2010-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N222UH | Robinson Helicopter R44 II |
Helicopter | Alba Aviation Services INC Scottsdale, Arizona |
Standard | 2010-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N4392W | Robinson Helicopter R44 II |
Helicopter | Individual owner Wisconsin |
Standard | 2010-05-04 | ValidFAA registration status code V: Valid registration. All codes |
| N211TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2010-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N600EP | Robinson Helicopter R44 II |
Helicopter | Kdm Services LLC Wilmington, Delaware |
Standard | 2010-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N441CD | Robinson Helicopter R44 II |
Helicopter | Db Excavation INC Lewes, Delaware |
Standard | 2009-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N448DB | Robinson Helicopter R44 II |
Helicopter | C V C Holdings LLC Pasco, Washington |
Standard | 2009-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N167SH | Robinson Helicopter R44 II |
Helicopter | Saratoga Aviation LLC Wilmington, Delaware |
Standard | 2009-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N441TX | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2009-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N491SA | Robinson Helicopter R44 II |
Helicopter | Shier Aviation CORP DBA San Diego, California |
Standard | 2009-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N537M | Robinson Helicopter R44 II |
Helicopter | Gizmo Aviation LLC Roswell, New Mexico |
Standard | 2009-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N712RB | Robinson Helicopter R44 II |
Helicopter | Ronald Bauman LLC Stuttgart, Arkansas |
Standard | 2009-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N53LR | Robinson Helicopter R44 II |
Helicopter | Whirlybird LLC Bloomington, Indiana |
Standard | 2009-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N661TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2009-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N219ST | Robinson Helicopter R44 II |
Helicopter | Lti LLC Incline Village, Nevada |
Standard | 2009-03-31 | ValidFAA registration status code V: Valid registration. All codes |
| N443HH | Robinson Helicopter R44 II |
Helicopter | Individual owner Oregon |
Standard | 2009-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N41431 | Robinson Helicopter R44 II |
Helicopter | Nally & Hamilton Enterprises INC Bardstown, Kentucky |
Standard | 2009-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N531SH | Robinson Helicopter R44 II |
Helicopter | Pit Air LLC Graham, Texas |
Standard | 2008-12-02 | ValidFAA registration status code V: Valid registration. All codes |
| N788G | Robinson Helicopter R44 II |
Helicopter | Charlotte Helicopters INC Waxhaw, North Carolina |
Standard | 2008-11-12 | ValidFAA registration status code V: Valid registration. All codes |
| N496D | Robinson Helicopter R44 II |
Helicopter | Heritage Air LLC Anchorage, Alaska |
Standard | 2008-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N216HD | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Garland, Texas |
Standard | 2008-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N233Z | Robinson Helicopter R44 II |
Helicopter | Agl Machine CO LLC Marietta, Georgia |
Standard | 2007-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N44YD | Robinson Helicopter R44 II |
Helicopter | Yule Development CO INC Newton Center, Massachusetts |
Standard | 2007-12-18 | ValidFAA registration status code V: Valid registration. All codes |
| N681PT | Robinson Helicopter R44 II |
Helicopter | Standard | 2007-08-11 | 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.