2025
Year
C-FLLX — 2025 Sonex
C-FLLX is an amateur-built 2025 Sonex based in CYKF - Waterloo, Ontario, listed on the Transport Canada Civil Aircraft Register (serial 307).
Experimental / homebuilt
Category
Ontario
Based
37
On CA register
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The aircraft
Year built2025 · 1 year old
Airframe typeWhether Transport Canada classes it as an aeroplane, a helicopter, a glider, a balloon or a gyroplane.Aeroplane
Engine typeHow the engine makes power. Piston engines run on avgas like a car engine; turboprops and jets burn turbine fuel, cost far more to overhaul, and are usually reserved for bigger or faster aircraft.Piston
Engines1
Max take-off weightMaximum take-off weight: the heaviest the aircraft may legally be when it starts its take-off roll, including fuel, people and baggage. It's the number that decides what licence and ratings you need, and what it costs to park.559 kg · 1,232 lb
Where it's based
BasedThe city or airport Transport Canada holds as the aircraft's base. Where the field holds a four-letter code like CYXE, that's the airport's ICAO identifier.CYKF - Waterloo, Ontario
Transport Canada officeThe Transport Canada regional office that administers this registration. It follows the owner's address, so it isn't always the nearest office to where the aircraft actually sits.Dorval
Identity
Serial numberThe manufacturer's own number for this individual airframe, stamped on a plate. Unlike the registration, it never changes — it identifies the aircraft across every country it's ever been registered in.307
ManufacturerThe full legal name of the company that built it, which is often not the name on the tail. A Cessna 172 built in 2022 was made by Textron Aviation.Timothy F. Clemens
Built inWhere the aircraft was manufactured. Most of Canada's fleet was built in the United States.Canada
ICAO 24-bit addressA unique 24-bit number your transponder broadcasts with every Mode S and ADS-B message — flight trackers key on it rather than the tail number. Canada's block runs C00000 to C3FFFF, which is why Canadian aircraft nearly all start C0 to C3. Transport Canada assigns it against the registration, so it changes if the aircraft is re-registered.C01E42
Registration
Registration typePrivate, Commercial or State. Commercial means the registration permits use for hire or reward — charter, flight training, aerial work. It describes the registration, not who owns the aircraft.Private
AirworthinessAmateur-built: the owner built at least half of it themselves, under Transport Canada's homebuilt standard. It cannot be flown for hire or reward, so no charter, no rental and no paid flight training.Special Certificate of Airworthiness Amateur Built
Basis of registrationThe rule the aircraft is registered under. Most are registered against a type certificate, meaning they're a factory design approved by the regulator; amateur-built and ultralight aircraft come in under their own standards.CAR Standard 549 - Amateur Built Aircraft
Registered sinceWhen the current registration took effect. A recent date usually means the aircraft changed hands or was re-registered — it is not the date it was built.21 July 2025
Where C-FLLX is, and how to track it
C-FLLX transmits ADS-B under the 24-bit address C01E42. Trackers key on that address rather than the tail number, so it finds the aircraft even on flights flown under a different callsign. Transport Canada assigns the address against the registration, so it changes if the aircraft is re-registered.
Most private aircraft are on the ground most of the time — if a tracker shows nothing, it is very likely parked rather than missing.
How rare is C-FLLX?
The Sonex SONEX is uncommon in Canada — there are 37 registered on the Transport Canada Civil Aircraft Register — see every one.
- 11 of the 37 are in Ontario.
- Median year built for the type: 2009 — C-FLLX is newer than half of them.
- One of 45 Sonex aircraft on the Canadian register, across every model.
- One of 4,126 aircraft in Canada's experimental / homebuilt category, 1,312 of them in Ontario.
- 4 aircraft are based in CYKF - Waterloo.
Not for sale right now
C-FLLX is not listed on MarketPlane. If it ever is, we can tell you — one email, then nothing. No account needed.
Reported occurrences
Transport Canada has 2 reports on file mentioning C-FLLX (2001–2017). One records damage. The other one is filed with no damage recorded — that category covers bird strikes, air-traffic events and equipment reports, which are logged whether or not anything was harmed.
Substantial · Jun 1, 2017
Accident — landing phase — 3NM S POURVOIRIE MIRAGE QC (CPM3) · TSB file A17Q0073
Transport Canada describes CADORS entries as preliminary and unsubstantiated, and subject to change. Reports reach the system when somebody files one, so an empty or quiet record is not proof an aircraft has never been damaged — it is not a title search, an airworthiness-directive check or a substitute for a pre-purchase inspection or a look at the logbooks. One entry has a Transportation Safety Board file number; those are investigated separately and the TSB publishes its own reports. Source: Transport Canada, Civil Aviation Daily Occurrence Reporting System (CADORS), under the Open Government Licence – Canada.
Other Sonex SONEX in Canada
C-IMJY 2022 · C-GWQF 2021 · C-IGMW 2020 · C-FWPE 2017 · C-GICC 2014 · C-IKOW 2014 · all Sonex SONEX →
Also based at CYKF (CYKF - Waterloo)
C-GLHI Robinson · C-FIZC REPLICA CORNELL · C-FGLY Robinson · C-GMUW Pipistrel · C-GAUW Pipistrel · C-FGPJ ICON · all aircraft at CYKF →
Own this aircraft?
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Canadian Civil Aircraft Register, current to September 17, 2026. Aircraft data reproduced and distributed with the permission of the Government of Canada. MarketPlane.ca is not affiliated with Transport Canada.