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 |
|---|---|---|---|---|---|---|
| N808A | Robinson Helicopter R44 II |
Helicopter | Flying Mermaid LLC Aiea, Hawaii |
Standard | 2020-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N99TV | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Desoto, Texas |
Standard | 2020-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N744KA | Robinson Helicopter R44 II |
Helicopter | All Planes & Helicopters CORP Boca Raton, Florida |
Standard | 2020-07-16 | Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes |
| N38RJ | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2020-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N401KW | Robinson Helicopter R44 II |
Helicopter | Southeastern Tank & Tower INC Lake Park, Georgia |
Standard | 2020-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N58SE | Robinson Helicopter R44 II |
Helicopter | Sky Solutions LLC Westland, Michigan |
Standard | 2020-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N4153G | Robinson Helicopter R44 II |
Helicopter | Heli Aviation Holding II LLC Newark, Delaware |
Standard | 2020-07-07 | ValidFAA registration status code V: Valid registration. All codes |
| N341CC | Robinson Helicopter R44 II |
Helicopter | Continental Helicopters INC Sheffield, Texas |
Standard | 2020-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N844VB | Robinson Helicopter R44 II |
Helicopter | Pnr Holdings Bravo LLC Baltimore, Maryland |
Standard | 2020-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N286JA | Robinson Helicopter R44 II |
Helicopter | Mungo Air LLC Saint Louis, Missouri |
Standard | 2020-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2323V | Robinson Helicopter R44 II |
Helicopter | Hella Copters LLC Columbus, Ohio |
Standard | 2020-05-27 | ValidFAA registration status code V: Valid registration. All codes |
| N808LB | Robinson Helicopter R44 II |
Helicopter | United Therapeutics CORP Silver Spring, Maryland |
Standard | 2020-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N878YE | Robinson Helicopter R44 II |
Helicopter | Yankee Helicopters LLC Plainville, Connecticut |
Standard | 2020-05-12 | ValidFAA registration status code V: Valid registration. All codes |
| N18NE | Robinson Helicopter R44 II |
Helicopter | 330Am Holding CORP Miami, Florida |
Standard | 2020-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N87AK | Robinson Helicopter R44 II |
Helicopter | Deckload Aviation LLC Kodiak, Alaska |
Standard | 2020-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N384HR | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2020-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N316CW | Robinson Helicopter R44 II |
Helicopter | Wwc Sky Holdings LLC Wilmington, Delaware |
Standard | 2020-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N878US | Robinson Helicopter R44 |
Helicopter | Green Aviation Augusta, Maine |
Standard | 2020-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N3157Y | Robinson Helicopter R44 II |
Helicopter | Brennand R44 LLC Neenah, Wisconsin |
Standard | 2020-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N60HT | Robinson Helicopter R44 II |
Helicopter | Apex Helicopters LLC Pearland, Texas |
Multiple | 2020-04-01 | ValidFAA registration status code V: Valid registration. All codes |
| N159GD | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2020-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N649TW | Robinson Helicopter R44 II |
Helicopter | Marathon Leasing INC Elyria, Ohio |
Standard | 2020-03-17 | ValidFAA registration status code V: Valid registration. All codes |
| N55HV | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2020-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N65VF | Robinson Helicopter R44 II |
Helicopter | Submissive Air INC Deadwood, South Dakota |
Standard | 2020-03-10 | ValidFAA registration status code V: Valid registration. All codes |
| N166SU | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2020-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N497SU | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2020-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N169SU | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2020-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N432LC | Robinson Helicopter R44 II |
Helicopter | Cardinal Roots LLC Middletown, Delaware |
Standard | 2020-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N544JH | Robinson Helicopter R44 II |
Helicopter | Josub LLC Greenville, North Carolina |
Standard | 2020-02-13 | ValidFAA registration status code V: Valid registration. All codes |
| N2444 | Robinson Helicopter R44 II |
Helicopter | Qualitair LLC Trustee Michelstadt, |
Standard | 2020-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N144LR | Robinson Helicopter R44 II |
Helicopter | Tj Holdings INC Trustee Wilmington, Delaware |
Standard | 2020-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N4124D | Robinson Helicopter R44 II |
Helicopter | Individual owner Texas |
Standard | 2020-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N48WM | Robinson Helicopter R44 II |
Helicopter | Individual owner Florida |
Standard | 2020-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N779GB | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2020-01-16 | ValidFAA registration status code V: Valid registration. All codes |
| N4471J | Robinson Helicopter R44 II |
Helicopter | N4471J LLC Dover, Delaware |
Standard | 2020-01-14 | ValidFAA registration status code V: Valid registration. All codes |
| N443RS | Robinson Helicopter R44 II |
Helicopter | Ntss LLC Las Vegas, Nevada |
Standard | 2020-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N133MB | Robinson Helicopter R44 II |
Helicopter | Hover Holdings LLC Coral Gables, Florida |
Standard | 2019-12-27 | ValidFAA registration status code V: Valid registration. All codes |
| N69HT | Robinson Helicopter R44 II |
Helicopter | Triple Tango LLC Carlsbad, New Mexico |
Standard | 2019-12-27 | ValidFAA registration status code V: Valid registration. All codes |
| N462BA | Robinson Helicopter R44 II |
Helicopter | Elkhorn Aviation INC Baker City, Oregon |
Standard | 2019-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N7073T | Robinson Helicopter R44 II |
Helicopter | Sky Helicopters INC Desoto, Texas |
Standard | 2019-12-20 | ValidFAA registration status code V: Valid registration. All codes |
| N678AS | Robinson Helicopter R44 II |
Helicopter | Individual owner Alaska |
Standard | 2019-12-13 | ValidFAA registration status code V: Valid registration. All codes |
| N44YN | Robinson Helicopter R44 II |
Helicopter | G A Clipper Helicopter INC Trustee Wilmington, Delaware |
Standard | 2019-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N38AX | Robinson Helicopter R44 II |
Helicopter | Axis Helicopters LLC Port Arthur, Texas |
Standard | 2019-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N998MS | Robinson Helicopter R44 II |
Helicopter | Standard | 2019-11-08 | ValidFAA registration status code V: Valid registration. All codes | |
| N544RC | Robinson Helicopter R44 II |
Helicopter | Portfolio 544Rc LLC Wilmington, Delaware |
Standard | 2019-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N637LN | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2019-10-04 | ValidFAA registration status code V: Valid registration. All codes |
| N3255H | Robinson Helicopter R44 II |
Helicopter | Alba Leasing Services LLC Scottsdale, Arizona |
Standard | 2019-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N4254G | Robinson Helicopter R44 II |
Helicopter | Alpine Air Aviation LLC West Haven, Utah |
Standard | 2019-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N41VE | Robinson Helicopter R44 II |
Helicopter | Jrvc Transportation INC Boston, Massachusetts |
Standard | 2019-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N74686 | Robinson Helicopter R44 II |
Helicopter | Fly In Helicopters LLC Wilmington, Delaware |
Standard | 2019-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N489GB | Robinson Helicopter R44 II |
Helicopter | Northland Hangars LLC Anchorage, Alaska |
Standard | 2019-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N120AB | Robinson Helicopter R44 II |
Helicopter | Hawaii Pacific Aviation INC Kailua Kona, Hawaii |
Standard | 2019-07-29 | ValidFAA registration status code V: Valid registration. All codes |
| N606TS | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2019-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N944PB | Robinson Helicopter R44 II |
Helicopter | Abraham Equine INC Canadian, Texas |
Restricted | 2019-07-17 | ValidFAA registration status code V: Valid registration. All codes |
| N734MA | Robinson Helicopter R44 II |
Helicopter | Rwr Air INC Tok, Alaska |
Standard | 2019-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3203G | Robinson Helicopter R44 II |
Helicopter | Alpine Air Alaska LLC Girdwood, Alaska |
Standard | 2019-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N4537J | Robinson Helicopter R44 II |
Helicopter | Turkey Holler LLC Knox City, Texas |
Standard | 2019-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N624WC | Robinson Helicopter R44 II |
Helicopter | Rs Aviation Services Moorpark, California |
Standard | 2019-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N898GB | Robinson Helicopter R44 II |
Helicopter | Boslough Construction INC Anchorage, Alaska |
Standard | 2019-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N1971G | Robinson Helicopter R44 II |
Helicopter | W & J Aviation LLC Missoula, Montana |
Standard | 2019-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N4529U | Robinson Helicopter R44 II |
Helicopter | Individual owner Alaska |
Standard | 2019-05-23 | ValidFAA registration status code V: Valid registration. All codes |
| N918BS | Robinson Helicopter R44 II |
Helicopter | Rotor Ops 269 LLC Wilmington, Delaware |
Standard | 2019-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N76SG | Robinson Helicopter R44 II |
Helicopter | Lost Bay Helicopters LLC Gulf Shores, Alabama |
Standard | 2019-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N744RH | Robinson Helicopter R44 II |
Helicopter | Berger Rentals LLC Chesterfield, Michigan |
Standard | 2019-03-23 | ValidFAA registration status code V: Valid registration. All codes |
| N27BS | Robinson Helicopter R44 II |
Helicopter | Blackhawk 787 LLC Columbus, Ohio |
Standard | 2019-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N4447A | Robinson Helicopter R44 II |
Helicopter | South Texas Helicopter Services LLC Mcallen, Texas |
Standard | 2019-03-20 | ValidFAA registration status code V: Valid registration. All codes |
| N39GS | Robinson Helicopter R44 II |
Helicopter | Air Flight Enterprises INC South Daytona, Florida |
Standard | 2019-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N441GS | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2019-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N441SD | Robinson Helicopter R44 II |
Helicopter | Flicksville Flyers INC Bangor, Pennsylvania |
Standard | 2019-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N555CM | Robinson Helicopter R44 II |
Helicopter | Ssr Aviation LLC Overland Park, Kansas |
Standard | 2019-03-08 | ValidFAA registration status code V: Valid registration. All codes |
| N325SM | Robinson Helicopter R44 II |
Helicopter | Purple Raven Partners LLC Lexington, Kentucky |
Standard | 2019-03-02 | ValidFAA registration status code V: Valid registration. All codes |
| N803PT | Robinson Helicopter R44 II |
Helicopter | Heli Good Time LLC Chesterfield, Michigan |
Standard | 2019-02-27 | ValidFAA registration status code V: Valid registration. All codes |
| N897SU | Robinson Helicopter R44 II |
Helicopter | Southern Utah University Cedar City, Utah |
Standard | 2019-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N991CW | Robinson Helicopter R44 II |
Helicopter | Kolibri Aviation LLC Pacoima, California |
Standard | 2019-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N4041F | Robinson Helicopter R44 II |
Helicopter | Pine Bottom Aviation Services LLC Martinsburg, Pennsylvania |
Standard | 2019-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N109MC | Robinson Helicopter R44 II |
Helicopter | Individual owner Tennessee |
Standard | 2019-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N4361R | Robinson Helicopter R44 II |
Helicopter | Elkhorn Aviation INC Baker City, Oregon |
Standard | 2019-02-15 | ValidFAA registration status code V: Valid registration. All codes |
| N144WK | Robinson Helicopter R44 II |
Helicopter | Western Kentucky Leasing LLC Philpot, Kentucky |
Restricted | 2019-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N744WG | Robinson Helicopter R44 II |
Helicopter | Spitzer Helicopter LLC Wilmington, Delaware |
Standard | 2019-02-05 | ValidFAA registration status code V: Valid registration. All codes |
| N4126A | Robinson Helicopter R44 II |
Helicopter | November Alpha LLC Dover, Delaware |
Standard | 2019-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N721BB | Robinson Helicopter R44 II |
Helicopter | Rs Aviation Services Moorpark, California |
Standard | 2019-01-18 | ValidFAA registration status code V: Valid registration. All codes |
| N298DC | Robinson Helicopter R44 II |
Helicopter | Individual owner California |
Standard | 2019-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N144PP | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2018-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N637HP | Robinson Helicopter R44 II |
Helicopter | Smt Ops INC Setauket, New York |
Standard | 2018-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N220TB | Robinson Helicopter R44 II |
Helicopter | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2018-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N73FX | Robinson Helicopter R44 II |
Helicopter | Flight Equity LLC Fayetteville, Arkansas |
Standard | 2018-12-01 | ValidFAA registration status code V: Valid registration. All codes |
| N929DB | Robinson Helicopter R44 II |
Helicopter | Riley Livestock INC Mayfield, Kentucky |
Standard | 2018-12-01 | ValidFAA registration status code V: Valid registration. All codes |
| N752KT | Robinson Helicopter R44 II |
Helicopter | Willow Branch Farms LLC Centreville, Maryland |
Standard | 2018-11-15 | ValidFAA registration status code V: Valid registration. All codes |
| N277CH | Robinson Helicopter R44 II |
Helicopter | Hatz Aviation LLC Pompano Beach, Florida |
Standard | 2018-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N824AM | Robinson Helicopter R44 II |
Helicopter | Holt Helicopters INC Uvalde, Texas |
Standard | 2018-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N300WZ | Robinson Helicopter R44 II |
Helicopter | Individual owner New York |
Standard | 2018-10-27 | ValidFAA registration status code V: Valid registration. All codes |
| N692BA | Robinson Helicopter R44 II |
Helicopter | Rotor Ops 269 LLC Wilmington, Delaware |
Standard | 2018-10-27 | ValidFAA registration status code V: Valid registration. All codes |
| N342LS | Robinson Helicopter R44 II |
Helicopter | Autorotation Aviation LLC Ardmore, Oklahoma |
Standard | 2018-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N722AT | Robinson Helicopter R44 II |
Helicopter | Devries Electric INC Pella, Iowa |
Standard | 2018-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N4043P | Robinson Helicopter R44 II |
Helicopter | Polar Star CORP Kalispell, Montana |
Standard | 2018-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N929WA | Robinson Helicopter R44 II |
Helicopter | Wings Air Helicopters LLC West Harrison, New York |
Standard | 2018-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N569PK | Robinson Helicopter R44 II |
Helicopter | World Aircraft INC Wagener, South Carolina |
Standard | 2018-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N944JM | Robinson Helicopter R44 II |
Helicopter | Scheuermann Excavating INC Whitehall, Pennsylvania |
Standard | 2018-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N23HH | Robinson Helicopter R44 II |
Helicopter | Go Fly Maui LLC Paia, Hawaii |
Standard | 2018-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N585GG | Robinson Helicopter R44 II |
Helicopter | Joey Os LLC Darlington, Pennsylvania |
Standard | 2018-08-22 | 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.