# Mosquito Aviation XE
The **Mosquito Aviation XE** is a single-seat, amateur-built ultralight helicopter, commonly known as the Mosquito, produced by Composite-FX of Trenton, Florida, with piston or turbine engine options[1](https://composite-fx.com/) • [2](https://www.tsb.gc.ca/sites/default/files/rapports-reports/aviation/A18W0098/eng/a18w0098.pdf). It was developed on the principle of the earlier open-frame Mosquito Air, with the open frame replaced by an enclosed body[3](https://www.ajer.org/papers/Vol-7-issue-3/Z0703239246.pdf). The XE is almost identical to the Air but comes fully enclosed with a monocoque composite hull[4](https://www.flying-pages.com/uploads/media/Helicopterteaser.pdf).
| Key fact | Detail |
|---|---|
| Type | Single-seat, amateur-built ultralight helicopter[2](https://www.tsb.gc.ca/sites/default/files/rapports-reports/aviation/A18W0098/eng/a18w0098.pdf) |
| Manufacturer | Composite-FX, Trenton, Florida[1](https://composite-fx.com/) |
| Origin | Developed from the open-frame Mosquito Air, with an enclosed body[3](https://www.ajer.org/papers/Vol-7-issue-3/Z0703239246.pdf) |
| First fuselaged model | XEL, debuted 2004, FAA Part 103 ultralight legal[5](https://storeyaviation.simplesite.com/444563553/) |
| XE powerplant | Registered version of the 60 hp XEL[5](https://storeyaviation.simplesite.com/444563553/) |
| Current lineup | XEL, XE, XE 290, and XET (turbine)[1](https://composite-fx.com/) |
| US fleet | 31 Mosquito XE / XET helicopters hold a valid FAA registration[6](https://helicoptercharters.us/resources/helicopter-registry/model/mosquito/) |
## Design and development
The XE grew out of the Mosquito Air, an open-frame ultralight helicopter. In the last decade of ultralight development, the Mosquito Aviation XE was created on the same principle but with the open frame replaced by an enclosed body[3](https://www.ajer.org/papers/Vol-7-issue-3/Z0703239246.pdf). The aircraft directory Airframer lists the Composite FX Mosquito XE as a single-seat ultralight helicopter kitbuilt aircraft developed from the Mosquito Air, with dates of 2003/2002[7](https://www.airframer.com/program/mosquito-xe).
The XE Series line shares the same fuselage, rotor head, tail rotor, and mechanics, so that in a hover the models have basically the same feel, responsiveness, and stability; the differences between models lie mainly in their engines[5](https://storeyaviation.simplesite.com/444563553/). Composite-FX describes the aircraft as personal helicopters with piston and turbine engine options with exceptional power and auto-rotation capabilities[1](https://composite-fx.com/).
## Model history
The XE Series has passed through several engine-driven variants[5](https://storeyaviation.simplesite.com/444563553/):
- **XEL**: the first "fuselaged" model of the Mosquito Air, debuted in 2004; both the Air and XEL are FAA Part 103 ultralight legal.
- **XE**: a registered version of the 60 hp XEL, allowing a private pilot to log rotary flight time and fill the fuel tank completely.
- **XE3**: an 85 hp, three-cylinder version of the two-stroke, two-cylinder, air-cooled MZ202 used in the XEL and XE; these were somewhat problematic and were eventually discontinued.
- **XET**: introduced after the XE3 was abandoned, providing turbine power; it is considered Composite-FX's flagship model.
- **XE285**: a workhorse model priced below the XET with improved power and reliability over the earlier MZ engine models; it used the Inntec 800 engine, the engine advertised for the XE285[2](https://www.tsb.gc.ca/sites/default/files/rapports-reports/aviation/A18W0098/eng/a18w0098.pdf). It was discontinued in April 2021 and replaced with the XE290.
- **XE290**: the newest model, which advances on the XE285 by adding an ECU that maps fuel automatically, along with better cooling, a redesigned exhaust, and increased charging capacity.
Composite-FX sells the helicopters in factory-finished and kit options[1](https://composite-fx.com/).
## Registration and operation
In the United States, examples such as one Mosquito XE3 (serial MXE 1041H07, manufactured 2008) are registered in the experimental amateur-built category, with no type certificate data sheet or holder, a reciprocating engine, and an airworthiness date of April 2, 2008; the kit manufacturer is recorded as Innovator Technologies Inc., kit model Mosquito Helicopter[8](https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=8892). As experimental aircraft, they do not carry paying passengers[6](https://helicoptercharters.us/resources/helicopter-registry/model/mosquito/). A fleet count lists 31 Mosquito XE / XET helicopters holding a valid FAA registration[6](https://helicoptercharters.us/resources/helicopter-registry/model/mosquito/).
In Canada, the aircraft is operated as an amateur-built helicopter; a [Transportation Safety Board of Canada](https://www.edgepedia.org/transportation-safety-board-of-canada) investigation covered a privately operated amateur-built Mosquito XE (registration C-FHEZ, serial number 1004) that collided with wires near [Okotoks, Alberta](https://www.edgepedia.org/okotoks), in July 2018 during a local flight from the pilot's residence north of Indus, Alberta[9](https://www.bst.gc.ca/eng/rapports-reports/aviation/2018/a18w0098/a18w0098.html).
## Manufacturer and community
Composite-FX hosts an annual Mosquito Helicopter Rally at 6FL8, its FAA-registered turf airstrip 4 miles west of the factory in Trenton, Florida, featuring factory tours, flight demos, and displays; the next event listed is for April 11 and 12, 2026[1](https://composite-fx.com/). Storey Aviation serves as the US authorized full-service dealer for Composite-FX and the Mosquito XE Series[5](https://storeyaviation.simplesite.com/444563553/).
## References
1. [Composite-FX, manufacturer of the XE Series helicopters](https://composite-fx.com/)
2. [Air Transportation Safety Investigation Report A18W0098, Transportation Safety Board of Canada](https://www.tsb.gc.ca/sites/default/files/rapports-reports/aviation/A18W0098/eng/a18w0098.pdf)
3. [American Journal of Engineering Research, Vol. 7, Issue 3 (2018)](https://www.ajer.org/papers/Vol-7-issue-3/Z0703239246.pdf)
4. [World Directory of Light Aviation 2013-2014, helicopter teaser](https://www.flying-pages.com/uploads/media/Helicopterteaser.pdf)
5. [Storey Aviation, XE Series history](https://storeyaviation.simplesite.com/444563553/)
6. [Mosquito XE / XET: US Registered Fleet, American Helicopter Charters](https://helicoptercharters.us/resources/helicopter-registry/model/mosquito/)
7. [Composite FX Mosquito XE program supplier guide, Airframer](https://www.airframer.com/program/mosquito-xe)
8. [FAA Registry, N-Number Inquiry 8892](https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=8892)
9. [Aviation transportation safety investigation report A18W0098, TSB of Canada](https://www.bst.gc.ca/eng/rapports-reports/aviation/2018/a18w0098/a18w0098.html)
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*Topic: Encyclopedia › Technology and the built world › Transport and spaceflight › Aviation › Aircraft › Helicopters and rotorcraft › Helicopter manufacturers › Kit and ultralight helicopter makers*
*Initially written Sep 17, 2026 · Reviewed: Sep 17, 2026; Oct 15, 2026 · Edited: Oct 15, 2026; Oct 25, 2026 · Last review: Oct 15, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license