Apparatus

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sensors Mode-S transponder

C04B41

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GCMY · BEECH 1900 · operated by NORTHERN THUNDERBIRD AIR INC., Central Mountain Air Ltd

Hex
C04B41
Octal
60045501
Decimal
12,602,177
Country
CA
Tail
C-GCMY
Type
B190
No current signal · last broadcast 28d ago
Flights observed
157
Distinct callsigns
20
Country
CA
Last broadcast
28d ago

Last known position

Most recent position reported by Mode-S C04B41.

Country allocation

The ICAO 24-bit address C04B41 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 20 distinct

Callsign Airline Flights Last seen
GLR2768 Central Mountain Air 27 2026-06-03
GLR2751 - 27 2026-06-12
GLR2750 Central Mountain Air 22 2026-06-01
GLR2769 Central Mountain Air 13 2026-06-03
GLR728 Central Mountain Air 7 2026-06-14
GLR2713 Central Mountain Air 6 2026-05-28
GLR734 Central Mountain Air 5 2026-06-14
GLR721 Central Mountain Air 5 2026-05-22
GCMY - 5 2026-06-03
GLR631 Central Mountain Air 4 2026-05-19
GLR723 Central Mountain Air 3 2026-05-20
GLR1921 - 3 2026-06-13
CGCMY - 3 2026-05-04
GLR9917 Central Mountain Air 2 2026-05-20
GLR788 Central Mountain Air 2 2026-05-20
GLR786 Central Mountain Air 2 2026-05-22
GLR783 Central Mountain Air 2 2026-05-22
GLR781 Central Mountain Air 2 2026-05-20
GLR738 Central Mountain Air 2 2026-06-13
GLR634 Central Mountain Air 2 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-15 GLR921 - Jun 15, 15:19 UTCJun 15, 16:40 UTC1h 20m
2026-06-14 GLR728 YXS → YLW Jun 14, 22:40 UTCJun 14, 23:44 UTC1h 5m
2026-06-14 GLR708 - Jun 14, 21:25 UTCJun 14, 21:40 UTC15m
2026-06-14 GLR703 YXS → YXT Jun 14, 18:45 UTCJun 14, 19:45 UTC1h 0m
2026-06-14 GLR734 YVR → YLW Jun 14, 15:40 UTCJun 14, 18:10 UTC2h 30m
2026-06-13 GLR738 YLW → YVR Jun 13, 02:00 UTCJun 13, 04:20 UTC2h 19m
2026-06-13 GLR1921 - Jun 13, 00:10 UTCJun 13, 01:25 UTC1h 15m
2026-06-12 GLR2751 - Jun 12, 22:40 UTCJun 12, 23:25 UTC45m
2026-06-12 GLR2751 - Jun 12, 21:20 UTCJun 12, 21:30 UTC10m
2026-06-12 GLR1921 - Jun 12, 20:10 UTCJun 12, 20:30 UTC20m
2026-06-12 GLR1921 - Jun 12, 03:20 UTCJun 12, 04:05 UTC45m
2026-06-03 GLR2769 YXS → YCD Jun 3, 20:35 UTCJun 3, 22:30 UTC1h 55m
2026-06-03 GLR2768 YVR → YKA Jun 3, 15:40 UTCJun 3, 16:20 UTC40m
2026-06-03 GLR2768 YVR → YKA Jun 3, 14:25 UTCJun 3, 14:45 UTC20m
2026-06-03 GCMY - Jun 3, 12:40 UTCJun 3, 13:00 UTC20m
2026-06-02 GLR2769 YXS → YCD Jun 2, 20:50 UTCJun 2, 22:50 UTC2h 0m
2026-06-02 GLR2768 YVR → YKA Jun 2, 16:10 UTCJun 2, 16:55 UTC45m
2026-06-02 GLR2768 YVR → YKA Jun 2, 14:55 UTCJun 2, 15:15 UTC20m
2026-06-01 GLR2751 YLW → YVR Jun 1, 22:40 UTCJun 1, 23:25 UTC45m
2026-06-01 GLR2751 YLW → YVR Jun 1, 21:10 UTCJun 1, 21:25 UTC15m
2026-06-01 GLR2750 YVR → YLW Jun 1, 13:50 UTCJun 1, 14:10 UTC20m
2026-05-29 GLR2769 YXS → YCD May 29, 20:30 UTCMay 29, 22:55 UTC2h 25m
2026-05-29 GLR2768 YVR → YKA May 29, 16:45 UTCMay 29, 17:30 UTC45m
2026-05-29 GLR2768 YVR → YKA May 29, 15:25 UTCMay 29, 15:45 UTC20m
2026-05-28 GLR2713 YCD → YVR May 28, 23:00 UTCMay 28, 23:20 UTC20m
2026-05-28 GLR2769 YXS → YCD May 28, 20:55 UTCMay 28, 22:20 UTC1h 25m
2026-05-28 GLR2768 YVR → YKA May 28, 15:30 UTCMay 28, 16:15 UTC45m
2026-05-28 GLR2768 YVR → YKA May 28, 14:10 UTCMay 28, 14:30 UTC20m
2026-05-27 GLR2769 YXS → YCD May 27, 21:00 UTCMay 27, 23:00 UTC2h 0m
2026-05-27 GLR2768 YVR → YKA May 27, 16:00 UTCMay 27, 16:45 UTC45m
2026-05-27 GLR2768 YVR → YKA May 27, 14:35 UTCMay 27, 14:55 UTC20m
2026-05-26 GLR2769 YXS → YCD May 26, 20:45 UTCMay 26, 22:39 UTC1h 55m
2026-05-26 GLR2768 YVR → YKA May 26, 15:49 UTCMay 26, 16:35 UTC45m
2026-05-26 GLR2768 YVR → YKA May 26, 14:35 UTCMay 26, 14:55 UTC20m
2026-05-25 GLR2713 YCD → YVR May 25, 23:14 UTCMay 25, 23:35 UTC20m
2026-05-25 GLR2710 YVR → YCD May 25, 21:49 UTCMay 25, 22:00 UTC10m
2026-05-23 GLR738 YLW → YVR May 23, 00:25 UTCMay 23, 01:15 UTC50m
2026-05-22 GLR728 YXS → YLW May 22, 22:30 UTCMay 22, 23:35 UTC1h 5m
2026-05-22 GLR786 YYE → YXS May 22, 19:30 UTCMay 22, 20:10 UTC40m
2026-05-22 GLR783 YXS → YYE May 22, 17:05 UTCMay 22, 17:55 UTC50m
2026-05-22 GLR721 YLW → YXS May 22, 15:05 UTCMay 22, 16:10 UTC1h 5m
2026-05-21 GLR728 YXS → YLW May 21, 23:20 UTCMay 22, 00:25 UTC1h 5m
2026-05-21 GLR9013 YYD → YXS May 21, 19:25 UTCMay 21, 19:40 UTC15m
2026-05-21 GLR9012 - May 21, 17:05 UTCMay 21, 17:30 UTC25m
2026-05-21 GLR721 YLW → YXS May 21, 15:10 UTCMay 21, 16:15 UTC1h 5m
2026-05-20 GLR728 YXS → YLW May 20, 23:10 UTCMay 21, 00:10 UTC1h 0m
2026-05-20 GLR788 YYE → YXS May 20, 21:10 UTCMay 20, 21:40 UTC30m
2026-05-20 GLR781 YXS → YYE May 20, 18:45 UTCMay 20, 19:35 UTC50m
2026-05-20 GLR723 YLW → YXS May 20, 16:30 UTCMay 20, 17:50 UTC1h 20m
2026-05-20 GLR734 YVR → YLW May 20, 15:05 UTCMay 20, 15:55 UTC50m

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-GCMY page for operator, model, and routing details .

Mode-S C04B41 frequently asked

What is Mode-S code C04B41?
C04B41 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GCMY.
Where is Mode-S C04B41 registered?
Mode-S code C04B41 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C04B41 broadcasting right now?
No active broadcast right now. Last signal was 28d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C04B41, octal 60045501, decimal 12,602,177.
What flights does C04B41 operate?
Mode-S C04B41 has broadcast 20 distinct callsigns, including GLR2768, GLR2751, GLR2750, GLR2769, GLR728.