Apparatus

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sensors Mode-S transponder

C084B9

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GYGU · AIRBUS A-321 · operated by Air Canada

Hex
C084B9
Octal
60102271
Decimal
12,616,889
Country
CA
Tail
C-GYGU
Type
A321
No current signal · last broadcast 3h ago
Flights observed
232
Distinct callsigns
20
Country
CA
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S C084B9.

Country allocation

The ICAO 24-bit address C084B9 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
ACA173 Air Canada 14 2026-05-28
ACA176 Air Canada 13 2026-05-29
ACA1043 Air Canada 13 2026-05-28
ACA605 Air Canada 10 2026-04-28
ACA167 Air Canada 10 2026-05-19
ACA168 Air Canada 9 2026-05-19
ACA1237 Air Canada 9 2026-04-29
ACA1236 Air Canada 9 2026-04-29
ACA1044 Air Canada 9 2026-05-28
ACA618 Air Canada 8 2026-05-17
ACA1200 Air Canada 8 2026-04-26
ACA725 Air Canada 7 2026-05-28
ACA718 Air Canada 7 2026-05-27
ACA601 Air Canada 7 2026-05-26
ACA1201 Air Canada 7 2026-04-20
ACA1198 Air Canada 7 2026-04-20
ACA614 Air Canada 6 2026-04-27
ACA620 Air Canada 5 2026-05-26
ACA1203 Air Canada 5 2026-04-26
ACA430 Air Canada 3 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ACA715 LGA → YYZ May 29, 21:20 UTCMay 29, 22:25 UTC1h 5m
2026-05-29 ACA714 YYZ → LGA May 29, 18:50 UTCMay 29, 19:50 UTC1h 0m
2026-05-29 ACA714 YYZ → LGA May 29, 18:50 UTCMay 29, 19:34 UTC44m
2026-05-29 ACA176 YEG → YYZ May 29, 14:05 UTCMay 29, 17:25 UTC3h 20m
2026-05-28 ACA173 YYZ → YEG May 28, 22:05 UTCMay 29, 01:35 UTC3h 30m
2026-05-28 ACA173 YYZ → YEG May 28, 22:01 UTCMay 29, 01:38 UTC3h 37m
2026-05-28 ACA1044 AUS → YYZ May 28, 17:05 UTCMay 28, 20:00 UTC2h 55m
2026-05-28 ACA1043 YYZ → AUS May 28, 12:41 UTCMay 28, 15:36 UTC2h 55m
2026-05-28 ACA1043 YYZ → AUS May 28, 12:45 UTCMay 28, 15:45 UTC3h 0m
2026-05-28 ACA725 LGA → YYZ May 28, 02:00 UTCMay 28, 03:00 UTC1h 0m
2026-05-27 ACA718 YYZ → LGA May 27, 22:50 UTCMay 27, 23:45 UTC55m
2026-05-27 ACA100 YVR → YYZ May 27, 13:25 UTCMay 27, 17:35 UTC4h 10m
2026-05-27 ACA129 YYZ → YVR May 27, 03:39 UTCMay 27, 06:15 UTC2h 35m
2026-05-27 ACA129 YYZ → YVR May 27, 03:37 UTCMay 27, 07:53 UTC4h 16m
2026-05-27 ACA725 LGA → YYZ May 27, 00:49 UTCMay 27, 01:49 UTC1h 0m
2026-05-26 ACA718 YYZ → LGA May 26, 22:20 UTCMay 26, 23:25 UTC1h 5m
2026-05-26 ACA718 YYZ → LGA May 26, 22:19 UTCMay 26, 23:12 UTC53m
2026-05-26 ACA1044 AUS → YYZ May 26, 17:39 UTCMay 26, 20:29 UTC2h 50m
2026-05-26 ACA1043 YYZ → AUS May 26, 12:30 UTCMay 26, 15:35 UTC3h 5m
2026-05-26 ACA601 YHZ → YYZ May 26, 08:39 UTCMay 26, 10:44 UTC2h 5m
2026-05-26 ACA601 YHZ → YYZ May 26, 08:33 UTCMay 26, 10:30 UTC1h 57m
2026-05-26 ACA620 YYZ → YHZ May 26, 02:55 UTCMay 26, 04:15 UTC1h 20m
2026-05-26 ACA620 YYZ → YHZ May 26, 02:54 UTCMay 26, 04:25 UTC1h 31m
2026-05-25 ACA184 YVR → YYZ May 25, 20:50 UTCMay 25, 22:15 UTC1h 25m
2026-05-25 ACA184 YVR → YYZ May 25, 20:49 UTCMay 26, 00:45 UTC3h 56m
2026-05-25 ACA109 YYZ → YVR May 25, 14:25 UTCMay 25, 19:00 UTC4h 35m
2026-05-25 ACA483 YUL → YYZ May 25, 11:50 UTCMay 25, 12:50 UTC1h 0m
2026-05-25 ACA430 YYZ → YUL May 25, 03:15 UTCMay 25, 04:05 UTC50m
2026-05-25 ACA430 YYZ → YUL May 25, 03:13 UTCMay 25, 03:58 UTC45m
2026-05-24 ACA718 YYZ → LGA May 24, 23:00 UTCMay 24, 23:10 UTC10m
2026-05-24 ACA1044 AUS → YYZ May 24, 17:45 UTCMay 24, 20:30 UTC2h 45m
2026-05-24 ACA1043 YYZ → AUS May 24, 12:50 UTCMay 24, 16:10 UTC3h 20m
2026-05-24 ACA725 LGA → YYZ May 24, 00:20 UTCMay 24, 01:25 UTC1h 5m
2026-05-23 ACA718 YYZ → LGA May 23, 22:10 UTCMay 23, 23:15 UTC1h 5m
2026-05-23 ACA1044 AUS → YYZ May 23, 17:45 UTCMay 23, 20:35 UTC2h 50m
2026-05-23 ACA1043 YYZ → AUS May 23, 16:20 UTCMay 23, 16:25 UTC5m
2026-05-23 ACA1043 YYZ → AUS May 23, 12:38 UTCMay 23, 16:01 UTC3h 23m
2026-05-23 ACA1043 YYZ → AUS May 23, 12:40 UTCMay 23, 16:15 UTC3h 35m
2026-05-23 ACA1143 YQB → YYZ May 23, 00:20 UTCMay 23, 01:40 UTC1h 20m
2026-05-22 ACA1138 YXE → YYZ May 22, 22:05 UTCMay 22, 23:10 UTC1h 5m
2026-05-22 ACA176 YEG → YYZ May 22, 14:15 UTCMay 22, 17:35 UTC3h 20m
2026-05-21 ACA173 YYZ → YEG May 21, 21:50 UTCMay 22, 01:30 UTC3h 40m
2026-05-21 ACA176 YEG → YYZ May 21, 14:15 UTCMay 21, 17:35 UTC3h 20m
2026-05-20 ACA173 YYZ → YEG May 20, 22:00 UTCMay 21, 01:40 UTC3h 40m
2026-05-20 ACA1044 AUS → YYZ May 20, 17:30 UTCMay 20, 20:15 UTC2h 45m
2026-05-20 ACA1043 YYZ → AUS May 20, 12:40 UTCMay 20, 15:50 UTC3h 10m
2026-05-20 ACA1043 YYZ → AUS May 20, 12:40 UTCMay 20, 16:00 UTC3h 20m
2026-05-20 ACA725 LGA → YYZ May 20, 04:50 UTCMay 20, 05:45 UTC55m
2026-05-20 ACA724 YYZ → LGA May 20, 02:25 UTCMay 20, 03:20 UTC55m
2026-05-20 ACA724 YYZ → LGA May 20, 02:23 UTCMay 20, 03:07 UTC44m

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

Mode-S C084B9 frequently asked

What is Mode-S code C084B9?
C084B9 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GYGU.
Where is Mode-S C084B9 registered?
Mode-S code C084B9 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C084B9 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C084B9, octal 60102271, decimal 12,616,889.
What flights does C084B9 operate?
Mode-S C084B9 has broadcast 20 distinct callsigns, including ACA173, ACA176, ACA1043, ACA605, ACA167.