1975
Year
C-GRTO — 1975 Piper PA-23-250
C-GRTO is a 1975 Piper PA-23-250 (2 engines) based in Oshawa, Ontario, listed on the Transport Canada Civil Aircraft Register (serial 27-7554076).
Piston twin
Category
Ontario
Based
87
On CA register
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Piper PA-23 Apache & Aztec in Canada
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The aircraft
Year built1975 · 51 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.Piston
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.2,359 kg · 5,200 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.Oshawa, 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.Moncton
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.27-7554076
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.Piper Aircraft Corporation
Built inWhere the aircraft was manufactured. Most of Canada's fleet was built in the United States.U.S.A.
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.C07389
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.1A10
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.11 March 2025
Where C-GRTO is, and how to track it
C-GRTO transmits ADS-B under the 24-bit address C07389. 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-GRTO?
The Piper PA-23-250 is uncommon in Canada — there are 87 registered on the Transport Canada Civil Aircraft Register — see every one. It's part of the broader Piper PA-23 Apache & Aztec family, with 124 registered in Canada — see fleet numbers, prices and what's for sale.
- 34 of the 87 are in Ontario.
- The 59th most common type on the Canadian register, of 5,775 makes and models.
- Median year built for the type: 1969 — C-GRTO is newer than half of them.
- One of 3,374 Piper aircraft on the Canadian register, across every model.
- One of 1,496 aircraft in Canada's piston twin category, 415 of them in Ontario.
- 94 aircraft are based in Oshawa — see every one →
Not for sale right now
C-GRTO 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 4 reports on file mentioning C-GRTO (1996–2023). None of them records damage to the aircraft. Reports are filed for bird strikes, air-traffic events and equipment issues whether or not anything was harmed, so entries here are routine.
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. Source: Transport Canada, Civil Aviation Daily Occurrence Reporting System (CADORS), under the Open Government Licence – Canada.
Other Piper PA-23-250 in Canada
C-GRYD 1980 · C-GNAP 1979 · C-GYFI 1979 · C-FBVB 1978 · C-GHIR 1978 · C-GLZR 1978 · all Piper PA-23-250 →
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.