Apparatus

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sensors Mode-S transponder

C00821

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FDCA · AIRBUS A-320 · operated by Air Canada

Hex
C00821
Octal
60004041
Decimal
12,584,993
Country
CA
Tail
C-FDCA
Type
A320
No current signal · last broadcast 59m ago
Flights observed
256
Distinct callsigns
20
Country
CA
Last broadcast
59m ago

Last known position

Most recent position reported by Mode-S C00821.

Country allocation

The ICAO 24-bit address C00821 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
ACA687 Air Canada 8 2026-05-24
ACA786 Air Canada 7 2026-05-23
ACA457 Air Canada 7 2026-05-28
ACA266 Air Canada 7 2026-05-11
ACA452 Air Canada 6 2026-05-28
ACA410 Air Canada 6 2026-05-24
ACA268 Air Canada 6 2026-05-10
ACA160 Air Canada 6 2026-05-16
ACA1029 Air Canada 6 2026-05-26
ACA785 Air Canada 5 2026-05-23
ACA592 Air Canada 5 2026-05-26
ACA1030 Air Canada 5 2026-05-27
ACA713 Air Canada 4 2026-05-03
ACA465 Air Canada 4 2026-05-28
ACA374 Air Canada 4 2026-04-24
ACA292 Air Canada 4 2026-04-24
ACA265 Air Canada 4 2026-05-09
ACA263 Air Canada 4 2026-05-11
ACA1119 Air Canada 4 2026-05-01
ACA1109 Air Canada 4 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ACA337 YUL → YEG May 29, 23:45 UTCMay 30, 00:15 UTC30m
2026-05-29 ACA418 YYZ → YUL May 29, 21:15 UTCMay 29, 21:40 UTC25m
2026-05-29 ACA418 YYZ → YUL May 29, 20:10 UTCMay 29, 21:40 UTC1h 30m
2026-05-29 ACA418 YYZ → YUL May 29, 20:09 UTCMay 29, 20:56 UTC47m
2026-05-29 ACA413 YUL → YYZ May 29, 17:35 UTCMay 29, 18:30 UTC55m
2026-05-29 ACA1149 YQB → YUL May 29, 14:45 UTCMay 29, 15:15 UTC30m
2026-05-29 ACA1148 YUL → YQB May 29, 13:05 UTCMay 29, 13:40 UTC35m
2026-05-29 ACA480 YYZ → YUL May 29, 10:45 UTCMay 29, 11:35 UTC50m
2026-05-29 ACA480 YYZ → YUL May 29, 10:40 UTCMay 29, 11:30 UTC50m
2026-05-29 ACA471 YOW → YYZ May 29, 02:40 UTCMay 29, 03:25 UTC45m
2026-05-29 ACA466 YYZ → YOW May 29, 00:55 UTCMay 29, 01:35 UTC40m
2026-05-28 ACA465 YOW → YYZ May 28, 22:35 UTCMay 28, 23:15 UTC40m
2026-05-28 ACA465 YOW → YYZ May 28, 22:33 UTCMay 28, 23:02 UTC29m
2026-05-28 ACA460 YYZ → YOW May 28, 20:40 UTCMay 28, 21:20 UTC40m
2026-05-28 ACA457 YOW → YYZ May 28, 18:30 UTCMay 28, 19:15 UTC45m
2026-05-28 ACA457 YOW → YYZ May 28, 18:28 UTCMay 28, 19:07 UTC39m
2026-05-28 ACA452 YYZ → YOW May 28, 16:20 UTCMay 28, 17:00 UTC40m
2026-05-28 ACA447 YOW → YYZ May 28, 13:15 UTCMay 28, 14:00 UTC45m
2026-05-28 ACA447 YOW → YYZ May 28, 13:13 UTCMay 28, 13:52 UTC39m
2026-05-28 ACA442 YYZ → YOW May 28, 11:20 UTCMay 28, 12:00 UTC40m
2026-05-28 ACA510 ORD → YYZ May 28, 02:10 UTCMay 28, 03:10 UTC1h 0m
2026-05-27 ACA511 YYZ → ORD May 27, 23:10 UTCMay 28, 00:40 UTC1h 30m
2026-05-27 ACA1030 DFW → YYZ May 27, 02:14 UTCMay 27, 04:34 UTC2h 20m
2026-05-26 ACA1029 FLL → YYZ May 26, 21:55 UTCMay 27, 00:39 UTC2h 45m
2026-05-26 ACA592 IAH → YYZ May 26, 17:30 UTCMay 26, 20:09 UTC2h 40m
2026-05-26 ACA591 YYZ → IAH May 26, 12:45 UTCMay 26, 15:54 UTC3h 10m
2026-05-26 ACA1030 DFW → YYZ May 26, 04:39 UTCMay 26, 06:59 UTC2h 20m
2026-05-25 ACA1029 FLL → YYZ May 25, 23:49 UTCMay 26, 02:35 UTC2h 45m
2026-05-25 ACA592 IAH → YYZ May 25, 17:45 UTCMay 25, 20:24 UTC2h 40m
2026-05-25 ACA591 YYZ → IAH May 25, 12:40 UTCMay 25, 16:00 UTC3h 20m
2026-05-25 ACA1030 DFW → YYZ May 25, 02:15 UTCMay 25, 04:45 UTC2h 30m
2026-05-24 ACA1029 FLL → YYZ May 24, 23:00 UTCMay 24, 23:46 UTC46m
2026-05-24 ACA1029 FLL → YYZ May 24, 21:40 UTCMay 24, 21:50 UTC10m
2026-05-24 ACA415 YUL → YYZ May 24, 18:40 UTCMay 24, 19:35 UTC55m
2026-05-24 ACA410 YYZ → YUL May 24, 16:25 UTCMay 24, 17:15 UTC50m
2026-05-24 ACA687 YYT → YYZ May 24, 11:55 UTCMay 24, 14:10 UTC2h 15m
2026-05-24 ACA696 YYZ → YYT May 24, 02:00 UTCMay 24, 03:40 UTC1h 40m
2026-05-23 ACA786 LAX → YYZ May 23, 19:05 UTCMay 23, 23:20 UTC4h 15m
2026-05-23 ACA786 LAX → YYZ May 23, 19:00 UTCMay 23, 23:06 UTC4h 6m
2026-05-23 ACA785 YYZ → LAX May 23, 12:55 UTCMay 23, 17:35 UTC4h 40m
2026-05-22 ACA150 YYC → YYZ May 22, 20:20 UTCMay 22, 23:45 UTC3h 25m
2026-05-22 ACA137 YYZ → YYC May 22, 15:05 UTCMay 22, 18:55 UTC3h 50m
2026-05-22 ACA701 LGA → YYZ May 22, 11:00 UTCMay 22, 12:00 UTC1h 0m
2026-05-22 ACA724 YYZ → LGA May 22, 01:25 UTCMay 22, 02:30 UTC1h 5m
2026-05-21 ACA786 LAX → YYZ May 21, 19:10 UTCMay 21, 23:15 UTC4h 5m
2026-05-21 ACA785 YYZ → LAX May 21, 13:01 UTCMay 21, 17:45 UTC4h 45m
2026-05-20 ACA786 LAX → YYZ May 20, 19:00 UTCMay 20, 22:55 UTC3h 55m
2026-05-20 ACA785 YYZ → LAX May 20, 12:50 UTCMay 20, 17:45 UTC4h 55m
2026-05-20 ACA689 YYT → YYZ May 20, 08:45 UTCMay 20, 10:55 UTC2h 10m
2026-05-20 ACA689 YYT → YYZ May 20, 07:52 UTCMay 20, 10:45 UTC2h 53m

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

Mode-S C00821 frequently asked

What is Mode-S code C00821?
C00821 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FDCA.
Where is Mode-S C00821 registered?
Mode-S code C00821 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C00821 broadcasting right now?
No active broadcast right now. Last signal was 59m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C00821, octal 60004041, decimal 12,584,993.
What flights does C00821 operate?
Mode-S C00821 has broadcast 20 distinct callsigns, including ACA687, ACA786, ACA457, ACA266, ACA452.