Apparatus

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sensors Mode-S transponder

C084A3

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C084A3
Octal
60102243
Decimal
12,616,867
Country
CA
Tail
C-GYFY
Type
A321
No current signal · last broadcast 4h ago
Flights observed
452
Distinct callsigns
20
Country
CA
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S C084A3.

Country allocation

The ICAO 24-bit address C084A3 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
ACA176 - 15 2026-06-27
ACA168 Air Canada 14 2026-05-24
ACA1203 Air Canada 13 2026-04-30
ACA1200 Air Canada 13 2026-04-30
ACA601 Air Canada 12 2026-05-19
ACA167 Air Canada 11 2026-05-24
ACA164 - 11 2026-07-12
ACA605 Air Canada 10 2026-04-30
ACA177 - 10 2026-07-10
ACA1043 Air Canada 10 2026-05-29
ACA773 Air Canada 9 2026-06-13
ACA769 - 9 2026-06-24
ACA618 Air Canada 9 2026-05-14
ACA178 - 9 2026-07-10
ACA173 - 9 2026-06-20
ACA1201 Air Canada 9 2026-04-29
ACA1044 Air Canada 9 2026-05-29
ACA766 - 8 2026-06-24
ACA725 - 8 2026-06-28
ACA174 - 8 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 ACA357 - Jul 13, 22:15 UTCJul 14, 02:20 UTC4h 5m
2026-07-13 ACA356 - Jul 13, 17:30 UTCJul 13, 20:45 UTC3h 15m
2026-07-13 ACA356 YYC → YOW Jul 13, 17:27 UTCJul 13, 20:39 UTC3h 12m
2026-07-13 ACA143 YYZ → YYC Jul 13, 12:05 UTCJul 13, 15:55 UTC3h 50m
2026-07-13 ACA427 YUL → YYZ Jul 13, 01:35 UTCJul 13, 02:25 UTC50m
2026-07-12 ACA422 YYZ → YUL Jul 12, 22:25 UTCJul 12, 23:15 UTC50m
2026-07-12 ACA164 - Jul 12, 17:30 UTCJul 12, 20:45 UTC3h 15m
2026-07-12 ACA165 - Jul 12, 12:15 UTCJul 12, 16:01 UTC3h 45m
2026-07-12 ACA174 - Jul 12, 00:15 UTCJul 12, 02:30 UTC2h 15m
2026-07-12 ACA174 YEG → YYZ Jul 12, 00:11 UTCJul 12, 03:16 UTC3h 5m
2026-07-11 ACA171 - Jul 11, 19:05 UTCJul 11, 22:50 UTC3h 45m
2026-07-11 ACA171 YYZ → YEG Jul 11, 19:01 UTCJul 11, 22:43 UTC3h 42m
2026-07-11 ACA136 YYC → YYZ Jul 11, 14:10 UTCJul 11, 17:20 UTC3h 10m
2026-07-10 ACA357 - Jul 10, 22:20 UTCJul 11, 02:10 UTC3h 50m
2026-07-10 ACA356 YYC → YOW Jul 10, 17:30 UTCJul 10, 20:55 UTC3h 25m
2026-07-10 ACA143 YYZ → YYC Jul 10, 12:10 UTCJul 10, 16:00 UTC3h 50m
2026-07-10 ACA178 - Jul 10, 07:30 UTCJul 10, 10:40 UTC3h 10m
2026-07-10 ACA178 YEG → YYZ Jul 10, 07:27 UTCJul 10, 10:29 UTC3h 2m
2026-07-10 ACA177 YYZ → YEG Jul 10, 01:10 UTCJul 10, 04:52 UTC3h 42m
2026-07-10 ACA177 - Jul 10, 01:10 UTCJul 10, 02:45 UTC1h 35m
2026-07-09 ACA150 YYC → YYZ Jul 9, 20:05 UTCJul 9, 23:15 UTC3h 10m
2026-07-09 ACA137 YYZ → YYC Jul 9, 14:50 UTCJul 9, 18:45 UTC3h 55m
2026-07-09 ACA403 YUL → YYZ Jul 9, 12:15 UTCJul 9, 13:10 UTC55m
2026-07-09 ACA432 YYZ → YUL Jul 9, 03:20 UTCJul 9, 04:15 UTC55m
2026-07-09 ACA432 YYZ → YUL Jul 9, 03:20 UTCJul 9, 04:06 UTC46m
2026-07-09 ACA427 YUL → YYZ Jul 9, 00:50 UTCJul 9, 01:45 UTC55m
2026-07-09 ACA427 YUL → YYZ Jul 9, 00:50 UTCJul 9, 01:38 UTC48m
2026-07-08 ACA422 YYZ → YUL Jul 8, 22:27 UTCJul 8, 23:13 UTC46m
2026-07-08 ACA422 YYZ → YUL Jul 8, 22:30 UTCJul 8, 23:25 UTC55m
2026-07-08 ACA164 - Jul 8, 17:40 UTCJul 8, 20:55 UTC3h 15m
2026-07-08 ACA165 YYZ → YEG Jul 8, 12:45 UTCJul 8, 16:30 UTC3h 45m
2026-07-08 ACA178 - Jul 8, 07:30 UTCJul 8, 10:50 UTC3h 20m
2026-07-08 ACA178 YEG → YYZ Jul 8, 07:28 UTCJul 8, 10:38 UTC3h 10m
2026-07-08 ACA177 - Jul 8, 01:50 UTCJul 8, 05:35 UTC3h 45m
2026-07-07 ACA174 - Jul 7, 00:15 UTCJul 7, 03:30 UTC3h 15m
2026-07-06 ACA171 YYZ → YEG Jul 6, 19:11 UTCJul 6, 22:45 UTC3h 34m
2026-07-06 ACA171 - Jul 6, 19:15 UTCJul 6, 22:50 UTC3h 35m
2026-07-06 ACA607 - Jul 6, 15:05 UTCJul 6, 16:55 UTC1h 50m
2026-07-06 ACA606 - Jul 6, 12:00 UTCJul 6, 13:35 UTC1h 35m
2026-07-06 ACA126 - Jul 6, 05:55 UTCJul 6, 10:05 UTC4h 10m
2026-07-06 ACA126 YVR → YYZ Jul 6, 05:55 UTCJul 6, 09:55 UTC4h 0m
2026-07-05 ACA121 - Jul 5, 22:00 UTCJul 6, 02:40 UTC4h 40m
2026-07-05 ACA142 YYC → YYZ Jul 5, 16:35 UTCJul 5, 19:55 UTC3h 20m
2026-07-05 ACA135 YYZ → YYC Jul 5, 10:35 UTCJul 5, 14:30 UTC3h 55m
2026-07-05 ACA146 YYC → YYZ Jul 5, 01:12 UTCJul 5, 04:19 UTC3h 7m
2026-07-05 ACA146 - Jul 5, 01:15 UTCJul 5, 02:45 UTC1h 30m
2026-07-04 ACA139 YYZ → YYC Jul 4, 19:50 UTCJul 4, 23:40 UTC3h 50m
2026-07-04 ACA409 YUL → YYZ Jul 4, 15:15 UTCJul 4, 16:15 UTC1h 0m
2026-07-04 ACA404 YYZ → YUL Jul 4, 13:15 UTCJul 4, 14:05 UTC50m
2026-07-04 ACA178 - Jul 4, 07:10 UTCJul 4, 10:25 UTC3h 15m

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

Mode-S C084A3 frequently asked

What is Mode-S code C084A3?
C084A3 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GYFY.
Where is Mode-S C084A3 registered?
Mode-S code C084A3 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C084A3 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C084A3, octal 60102243, decimal 12,616,867.
What flights does C084A3 operate?
Mode-S C084A3 has broadcast 20 distinct callsigns, including ACA176, ACA168, ACA1203, ACA1200, ACA601.