sensors Mode-S transponder

C066B0

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GMXB · BOEING 737 MAX 8 · operated by Westjet

Hex
C066B0
Octal
60063260
Decimal
12,609,200
Country
CA
Tail
C-GMXB
Type
B38M
No current signal · last broadcast 23h ago
Flights observed
5
Distinct callsigns
3
Country
CA
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S C066B0.

Country allocation

The ICAO 24-bit address C066B0 falls within the block assigned to Canada (CA) by ICAO Annex 10, Volume III. Every aircraft registered in Canada receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 3 distinct

Callsign Airline Flights Last seen
WJA2975 WestJet 2 2026-04-13
WJA2898 - 2 2026-04-13
WJA2899 - 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 WJA2899 - Apr 13, 20:45 UTCApr 13, 23:40 UTC2h 55m
2026-04-13 WJA2898 - Apr 13, 15:50 UTCApr 13, 17:20 UTC1h 30m
2026-04-13 WJA2898 - Apr 13, 12:45 UTCApr 13, 16:05 UTC3h 20m
2026-04-13 WJA2975 PVR → YUL Apr 13, 00:20 UTCApr 13, 00:25 UTC5m
2026-04-12 WJA2975 PVR → YUL Apr 12, 23:55 UTCApr 13, 00:25 UTC30m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the C-GMXB page for operator, model, and routing details .

Mode-S C066B0 frequently asked

What is Mode-S code C066B0?
C066B0 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GMXB.
Where is Mode-S C066B0 registered?
Mode-S code C066B0 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C066B0 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C066B0, octal 60063260, decimal 12,609,200.
What flights does C066B0 operate?
Mode-S C066B0 has broadcast 3 distinct callsigns, including WJA2975, WJA2898, WJA2899.