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 Textron Lycoming Avco Corporation). 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 Textron Lycoming Avco Corporation · 73 models listed · revised August 1, 1998
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 |
|---|---|---|---|---|---|---|
| N985TM | Robinson Helicopter R44 II |
Helicopter | Striker LLC Lewes, Delaware |
Standard | 2023-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N28WF | Robinson Helicopter R44 II |
Helicopter | Lift Air LLC Shortsville, New York |
Standard | 2023-04-13 | ValidFAA registration status code V: Valid registration. All codes |
| N26LA | Robinson Helicopter R44 II |
Helicopter | Lead Aviation Fl2 LLC Osprey, Florida |
Standard | 2023-04-12 | ValidFAA registration status code V: Valid registration. All codes |
| N928VR | Robinson Helicopter R44 II |
Helicopter | Individual owner Idaho |
Standard | 2023-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N223PK | Robinson Helicopter R44 II |
Helicopter | Texas Specialty Hunts INC San Angelo, Texas |
Standard | 2023-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N74369 | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2023-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N770TW | Robinson Helicopter R44 II |
Helicopter | Business Promotions Consulting LLC Cynthiana, Kentucky |
Standard | 2023-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N808WH | Robinson Helicopter R44 II |
Helicopter | Next Level Land Sales LLC Zolfo Springs, Florida |
Standard | 2023-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N789KB | Robinson Helicopter R44 II |
Helicopter | Rotorwing LLC Sheffield, Illinois |
Multiple | 2023-03-29 | ValidFAA registration status code V: Valid registration. All codes |
| N999PU | Robinson Helicopter R44 II |
Helicopter | Papa Unicorn Heli LLC Key West, Florida |
Standard | 2023-03-29 | ValidFAA registration status code V: Valid registration. All codes |
| N318RN | Robinson Helicopter R44 II |
Helicopter | Pendas Aviation CORP Orlando, Florida |
Standard | 2023-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N361JF | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2023-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N54AG | Robinson Helicopter R44 |
Helicopter | Lmv LLC Kennebec, South Dakota |
Standard | 2023-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N326CL | Robinson Helicopter R44 II |
Helicopter | State of Alaska Anchorage, Alaska |
Standard | 2023-03-20 | ValidFAA registration status code V: Valid registration. All codes |
| N747LF | Robinson Helicopter R44 II |
Helicopter | Lewis Aeronautical LLC San Antonio, Texas |
Standard | 2023-03-15 | ValidFAA registration status code V: Valid registration. All codes |
| N50NK | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2023-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N247DB | Robinson Helicopter R44 II |
Helicopter | Individual owner Idaho |
Restricted | 2023-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N220EC | Robinson Helicopter R44 II |
Helicopter | Cc Landscaping Warehouse Plus INC Bradenton, Florida |
Standard | 2023-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N698BC | Robinson Helicopter R44 II |
Helicopter | Butler County Commissioners Hamilton, Ohio |
Standard | 2023-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N871RA | Robinson Helicopter R44 II |
Helicopter | Individual owner Alaska |
Standard | 2023-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N432BR | Robinson Helicopter R44 II |
Helicopter | Bakken Rotors LLC Sidney, Montana |
Standard | 2023-03-02 | ValidFAA registration status code V: Valid registration. All codes |
| N783TY | Robinson Helicopter R44 II |
Helicopter | Things That Fly LLC Wilmington, Delaware |
Standard | 2023-03-01 | ValidFAA registration status code V: Valid registration. All codes |
| N992V | Robinson Helicopter R44 II |
Helicopter | Aurora North LLC Helena, Montana |
Standard | 2023-03-01 | ValidFAA registration status code V: Valid registration. All codes |
| N232DW | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Georgia |
Standard | 2023-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N944GF | Robinson Helicopter R44 II |
Helicopter | Interstate Helicopter INC Bethany, Oklahoma |
Standard | 2023-02-24 | ValidFAA registration status code V: Valid registration. All codes |
| N619RF | Robinson Helicopter R44 II |
Helicopter | Jameshmp Enterprises LLC Lockport, Illinois |
Standard | 2023-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N337MH | Robinson Helicopter R44 II |
Helicopter | Eagle Eye LLC Houma, Louisiana |
Standard | 2023-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N444HH | Robinson Helicopter R44 II |
Helicopter | Aircraft Management Group Intl CORP Trustee Wilmington, Delaware |
Standard | 2023-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N944VB | Robinson Helicopter R44 II |
Helicopter | Warwick LLC Chesapeake, Virginia |
Standard | 2023-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N16FT | Robinson Helicopter R44 II |
Helicopter | Dwm LLC Fairmont, North Dakota |
Standard | 2023-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N825VJ | Robinson Helicopter R44 II |
Helicopter | Lite Flight INC Chatsworth, California |
Standard | 2023-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N457CW | Robinson Helicopter R44 II |
Helicopter | Rockin Mc Helicopter Services LLC Missoula, Montana |
Standard | 2023-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N928KP | Robinson Helicopter R44 II |
Helicopter | My Neighbors Helicopters LLC Duluth, Minnesota |
Standard | 2023-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N424CR | Robinson Helicopter R44 II |
Helicopter | S&S 1165 Investments Wimberley, Texas |
Standard | 2023-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N7095F | Robinson Helicopter R44 II |
Helicopter | Individual owner Oklahoma |
Standard | 2023-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N449CD | Robinson Helicopter R44 II |
Helicopter | 9 Robin LLC Wilmington, Delaware |
Standard | 2023-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N844AT | Robinson Helicopter R44 II |
Helicopter | Standard | 2023-02-07 | ValidFAA registration status code V: Valid registration. All codes | |
| N10UP | Robinson Helicopter R44 II |
Helicopter | Leonards Dream LLC Kent, Ohio |
Standard | 2023-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N566NH | Robinson Helicopter R44 II |
Helicopter | Diliji Enterprises International LLC Albuquerque, New Mexico |
Standard | 2023-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N600UH | Robinson Helicopter R44 II |
Helicopter | N600Uh LLC San Juan, Puerto Rico |
Standard | 2023-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N4177R | Robinson Helicopter R44 II |
Helicopter | Hangar 21 Aviation INC Lake Havasu City, Arizona |
Standard | 2023-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N978ET | Robinson Helicopter R44 II |
Helicopter | Flying J Services LLC Jourdanton, Texas |
Multiple | 2023-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N543BZ | Robinson Helicopter R44 II |
Helicopter | Bravo Zulu LLC Atlanta, Georgia |
Standard | 2023-01-25 | ValidFAA registration status code V: Valid registration. All codes |
| N99587 | Robinson Helicopter R44 II |
Helicopter | Standard | 2023-01-24 | ValidFAA registration status code V: Valid registration. All codes | |
| N7089Q | Robinson Helicopter R44 II |
Helicopter | Jetko LLC Boston, Massachusetts |
Standard | 2023-01-22 | ValidFAA registration status code V: Valid registration. All codes |
| N544CB | Robinson Helicopter R44 II |
Helicopter | Cbhelos LLC Chesapeake, Virginia |
Standard | 2023-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N144WA | Robinson Helicopter R44 II |
Helicopter | Rotor Leasing LLC Indianapolis, Indiana |
Standard | 2023-01-04 | ValidFAA registration status code V: Valid registration. All codes |
| N202GH | Robinson Helicopter R44 II |
Helicopter | Chesapeake Bay Helicopters INC Chesapeake, Virginia |
Standard | 2022-12-23 | ValidFAA registration status code V: Valid registration. All codes |
| N608HR | Robinson Helicopter R44 II |
Helicopter | Jc Aircraft Leasing LLC Wasilla, Alaska |
Standard | 2022-12-22 | ValidFAA registration status code V: Valid registration. All codes |
| N444HG | Robinson Helicopter R44 II |
Helicopter | Higher Ground Helicopters of Cincinnati LLC Miamisburg, Ohio |
Standard | 2022-12-19 | ValidFAA registration status code V: Valid registration. All codes |
| N41352 | Robinson Helicopter R44 II |
Helicopter | Custom Ppg INC Browns Summit, North Carolina |
Standard | 2022-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N273CA | Robinson Helicopter R44 II |
Helicopter | N273Ca LLC Tulsa, Oklahoma |
Standard | 2022-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N866NS | Robinson Helicopter R44 II |
Helicopter | Individual owner New Hampshire |
Standard | 2022-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N204MC | Robinson Helicopter R44 II |
Helicopter | B-Line Air LLC Malcom, Iowa |
Standard | 2022-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N3184T | Robinson Helicopter R44 II |
Helicopter | Metroplex Flight Services LLC Fort Worth, Texas |
Standard | 2022-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N434DV | Robinson Helicopter R44 II |
Helicopter | Classic Management of Lafayette LLC Youngsville, Louisiana |
Standard | 2022-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N31471 | Robinson Helicopter R44 II |
Helicopter | Hangar 21 Aviation INC Lake Havasu City, Arizona |
Standard | 2022-11-26 | ValidFAA registration status code V: Valid registration. All codes |
| N944TA | Robinson Helicopter R44 II |
Helicopter | Alpine Air Alaska LLC Girdwood, Alaska |
Standard | 2022-11-26 | ValidFAA registration status code V: Valid registration. All codes |
| N403WA | Robinson Helicopter R44 |
Helicopter | Aviatech INC Tamarac, Florida |
Standard | 2022-11-25 | ValidFAA registration status code V: Valid registration. All codes |
| N844RB | Robinson Helicopter R44 II |
Helicopter | Bates Show Sales Staff INC Venice, Florida |
Standard | 2022-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N443MM | Robinson Helicopter R44 II |
Helicopter | Earlybird Aerial Services LLC Goodfield, Illinois |
Restricted | 2022-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N244SL | Robinson Helicopter R44 II |
Helicopter | Tpc INC Childress, Texas |
Standard | 2022-11-04 | ValidFAA registration status code V: Valid registration. All codes |
| N2413X | Robinson Helicopter R44 II |
Helicopter | All Her Fault LLC Fairbanks, Alaska |
Standard | 2022-11-03 | ValidFAA registration status code V: Valid registration. All codes |
| N676MS | Robinson Helicopter R44 II |
Helicopter | Sky Solutions LLC Detroit, Michigan |
Standard | 2022-11-03 | ValidFAA registration status code V: Valid registration. All codes |
| N916AP | Robinson Helicopter R44 II |
Helicopter | Sg Helicopter Training LLC White Plains, New York |
Standard | 2022-11-03 | ValidFAA registration status code V: Valid registration. All codes |
| N964CC | Robinson Helicopter R44 II |
Helicopter | Individual owner Florida |
Standard | 2022-10-20 | ValidFAA registration status code V: Valid registration. All codes |
| N522TM | Robinson Helicopter R44 II |
Helicopter | Hec Aviation LLC Wilmington, Delaware |
Standard | 2022-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N644AF | Robinson Helicopter R44 II |
Helicopter | D & B Aviation Brokerage Services LLC Wilmington, Delaware |
Standard | 2022-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N488JB | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Wilmington, Delaware |
Standard | 2022-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N442SD | Robinson Helicopter R44 II |
Helicopter | Team Negrich LLC Osteen, Florida |
Standard | 2022-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N484AB | Robinson Helicopter R44 II |
Helicopter | Coejo Aviation LLC Uvalde, Texas |
Standard | 2022-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N744HJ | Robinson Helicopter R44 II |
Helicopter | Raven Helicopters LLC San Diego, California |
Standard | 2022-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N3157G | Robinson Helicopter R44 II |
Helicopter | Brushpopper Aviation LLC Annona, Texas |
Multiple | 2022-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N418TF | Robinson Helicopter R44 II |
Helicopter | Southern Helicopters LLC Vicksburg, Mississippi |
Standard | 2022-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N215GS | Robinson Helicopter R44 II |
Helicopter | Flight Equity LLC Fayetteville, Arkansas |
Standard | 2022-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N3010X | Robinson Helicopter R44 II |
Helicopter | Helifun LLC Austin, Texas |
Standard | 2022-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N26AY | Robinson Helicopter R44 II |
Helicopter | R44 White LLC Kalispell, Montana |
Standard | 2022-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N907VS | Robinson Helicopter R44 II |
Helicopter | Standard | 2022-08-23 | ValidFAA registration status code V: Valid registration. All codes | |
| N442KY | Robinson Helicopter R44 II |
Helicopter | Southern Cubs LLC Jupiter, Florida |
Standard | 2022-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N466WM | Robinson Helicopter R44 II |
Helicopter | Individual owner Idaho |
Standard | 2022-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N31197 | Robinson Helicopter R44 II |
Helicopter | Cournoyer Professional Contractors Port Orange, Florida |
Standard | 2022-08-02 | ValidFAA registration status code V: Valid registration. All codes |
| N62RK | Robinson Helicopter R44 II |
Helicopter | Individual owner Illinois |
Multiple | 2022-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N44KV | Robinson Helicopter R44 II |
Helicopter | Individual owner Montana |
Standard | 2022-07-20 | ValidFAA registration status code V: Valid registration. All codes |
| N944DC | Robinson Helicopter R44 II |
Helicopter | Vt Whitlock INC Lake City, South Carolina |
Standard | 2022-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N746BP | Robinson Helicopter R44 II |
Helicopter | Sky Solutions LLC Detroit, Michigan |
Standard | 2022-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N476JW | Robinson Helicopter R44 II |
Helicopter | Individual owner Georgia |
Standard | 2022-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N506KG | Robinson Helicopter R44 II |
Helicopter | Lone Star Land & Cattle CO Houston, Texas |
Standard | 2022-06-29 | ValidFAA registration status code V: Valid registration. All codes |
| N144GD | Robinson Helicopter R44 II |
Helicopter | Randall B Langley Licensed Real Estate Broker LLC Longboat Key, Florida |
Standard | 2022-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N344MG | Robinson Helicopter R44 II |
Helicopter | Air Service LLC Wilmington, Delaware |
Standard | 2022-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N4149D | Robinson Helicopter R44 II |
Helicopter | Individual owner North Dakota |
Standard | 2022-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N964DD | Robinson Helicopter R44 II |
Helicopter | Individual owner Montana |
Standard | 2022-06-16 | ValidFAA registration status code V: Valid registration. All codes |
| N823TC | Robinson Helicopter R44 II |
Helicopter | Sky Solutions LLC Detroit, Michigan |
Standard | 2022-06-03 | ValidFAA registration status code V: Valid registration. All codes |
| N67RW | Robinson Helicopter R44 II |
Helicopter | Individual owner New York |
Standard | 2022-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N630GG | Robinson Helicopter R44 II |
Helicopter | Ozark Air Operations LLC Kansas City, Missouri |
Standard | 2022-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N240RS | Robinson Helicopter R44 II |
Helicopter | Happy Destiny LLC Burnet, Texas |
Standard | 2022-05-12 | ValidFAA registration status code V: Valid registration. All codes |
| N7695D | Robinson Helicopter R44 II |
Helicopter | Co-owned owner Texas |
Standard | 2022-05-12 | ValidFAA registration status code V: Valid registration. All codes |
| N389AK | Robinson Helicopter R44 II |
Helicopter | Alpha Aviation LLC Anchorage, Alaska |
Standard | 2022-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N3413X | Robinson Helicopter R44 II |
Helicopter | All Her Fault LLC Fairbanks, Alaska |
Standard | 2022-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N678CP | Robinson Helicopter R44 II |
Helicopter | J&J Holdings and Investments LLC Phoenix, Arizona |
Standard | 2022-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N567HA | Robinson Helicopter R44 II |
Helicopter | Tj Helicopters LLC Seymour, Tennessee |
Standard | 2022-04-20 | 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.