1979
Year
C-GSGF — 1979 Dehavilland DHC-6 Series 300
C-GSGF is a 1979 Dehavilland DHC-6 Series 300 (2 engines) based in CYOW, Ontario, listed on the Transport Canada Civil Aircraft Register (serial 642).
Turboprop
Category
Ontario
Based
74
On CA register
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de Havilland DHC-6 Twin Otter in Canada
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The aircraft
Year built1979 · 47 years 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.Turbo Prop
Engines2
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.5,670 kg · 12,500 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.CYOW, 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.Toronto
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.642
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.The De Havilland Aircraft of Canada Limited
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.C074D2
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.Commercial
AirworthinessThe standard certificate: the aircraft conforms to its approved design and is maintained by a licensed engineer. No restrictions beyond the type's own, and it's what buyers and lenders expect to see.Certificate of Airworthiness
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 507.02, 507.03 - Type Certificate
Type certificateThe approval number for the aircraft's design, issued to the manufacturer. Every aircraft built to that approved design shares it, so it's a good way to confirm exactly which variant you're looking at.A82
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.26 May 2015
Imported to CanadaWhen the aircraft was first brought onto the Canadian register from abroad. Only recorded for imported aircraft, which is about a third of the fleet.28 June 2010
Where C-GSGF is, and how to track it
C-GSGF transmits ADS-B under the 24-bit address C074D2. 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-GSGF?
The Dehavilland DHC-6 SERIES 300 is uncommon in Canada — there are 74 registered on the Transport Canada Civil Aircraft Register — see every one. It's part of the broader de Havilland DHC-6 Twin Otter family, with 107 registered in Canada — see fleet numbers, prices and what's for sale.
- 9 of the 74 are in Ontario.
- The 70th most common type on the Canadian register, of 5,775 makes and models.
- Median year built for the type: 1976 — C-GSGF is newer than half of them.
- One of 898 Dehavilland aircraft on the Canadian register, across every model.
- One of 1,904 aircraft in Canada's turboprop category, 398 of them in Ontario.
- 25 aircraft are based at CYOW — see every one →
Not for sale right now
C-GSGF 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 3 reports on file mentioning C-GSGF (2015–2023). One records damage. The other 2 are 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.
Minor · Aug 15, 2015
Incident — climb phase — DUBLIN WESTON, IRELAND
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. 2 entries have 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 Dehavilland DHC-6 SERIES 300 in Canada
C-GDCZ 1988 · C-FFWP 1985 · C-FDYL 1982 · C-FJFR 1982 · C-FKBU 1982 · C-FTMU 1982 · all Dehavilland DHC-6 SERIES 300 →
Also based at CYOW (CYOW)
C-GRHB Cessna · C-GPKS Cirrus · C-FOGT Bombardier · C-FHCN Boeing · C-FXPL Aerospatiale · C-GYNF Agusta · all aircraft at CYOW →
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.