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 Jul 26, 22:15 UTC
Flights observed
556
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 22:15 UTC

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
ACA266 Air Canada 13 2026-07-20
ACA269 - 10 2026-07-20
ACA687 - 9 2026-06-18
ACA410 - 9 2026-06-23
ACA160 Air Canada 9 2026-07-19
ACA263 - 8 2026-07-20
ACA1030 - 8 2026-07-03
ACA1029 - 8 2026-07-02
ACA786 Air Canada 7 2026-05-23
ACA592 Air Canada 7 2026-06-08
ACA470 Air Canada 7 2026-07-22
ACA457 Air Canada 7 2026-05-28
ACA403 Air Canada 7 2026-06-04
ACA175 Air Canada 7 2026-07-19
ACA165 - 7 2026-07-23
ACA164 - 7 2026-07-23
ACA452 Air Canada 6 2026-05-28
ACA447 - 6 2026-07-11
ACA268 Air Canada 6 2026-05-10
ACA258 Air Canada 6 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA171 YYZ → YEG Jul 26, 19:00 UTCJul 26, 22:15 UTC3h 15m
2026-07-26 ACA409 YUL → YYZ Jul 26, 15:35 UTCJul 26, 16:25 UTC50m
2026-07-26 ACA404 YYZ → YUL Jul 26, 13:15 UTCJul 26, 14:10 UTC55m
2026-07-26 ACA404 YYZ → YUL Jul 26, 13:15 UTCJul 26, 14:04 UTC49m
2026-07-26 ACA1511 YYZ → YQT Jul 26, 02:00 UTCJul 26, 02:55 UTC55m
2026-07-25 ACA1508 YYZ → EWR Jul 25, 23:45 UTCJul 26, 00:45 UTC1h 0m
2026-07-25 ACA711 LGA → YYZ Jul 25, 21:20 UTCJul 25, 22:15 UTC55m
2026-07-25 ACA708 YYZ → LGA Jul 25, 16:05 UTCJul 25, 17:10 UTC1h 5m
2026-07-25 ACA174 YYC → YYZ Jul 25, 00:25 UTCJul 25, 03:35 UTC3h 10m
2026-07-24 ACA171 YYZ → YEG Jul 24, 19:30 UTCJul 24, 23:15 UTC3h 45m
2026-07-24 ACA453 YOW → YYZ Jul 24, 16:05 UTCJul 24, 16:40 UTC35m
2026-07-24 ACA448 - Jul 24, 14:15 UTCJul 24, 15:00 UTC45m
2026-07-24 ACA427 YUL → YYZ Jul 24, 00:50 UTCJul 24, 01:40 UTC50m
2026-07-23 ACA422 YYZ → YUL Jul 23, 22:30 UTCJul 23, 23:30 UTC1h 0m
2026-07-23 ACA164 - Jul 23, 17:30 UTCJul 23, 20:40 UTC3h 10m
2026-07-23 ACA165 YYZ → YEG Jul 23, 12:05 UTCJul 23, 15:50 UTC3h 45m
2026-07-23 ACA165 YYZ → YEG Jul 23, 12:04 UTCJul 23, 15:36 UTC3h 32m
2026-07-23 ACA174 YYC → YYZ Jul 23, 00:15 UTCJul 23, 03:15 UTC3h 0m
2026-07-23 ACA174 YYC → YYZ Jul 23, 00:10 UTCJul 23, 03:03 UTC2h 53m
2026-07-22 ACA171 YYZ → YEG Jul 22, 19:10 UTCJul 22, 22:55 UTC3h 45m
2026-07-22 ACA1190 YYZ → YFC Jul 22, 15:30 UTCJul 22, 16:45 UTC1h 15m
2026-07-22 ACA1189 YYZ → YQT Jul 22, 12:50 UTCJul 22, 14:15 UTC1h 25m
2026-07-22 ACA1189 YYZ → YQT Jul 22, 12:49 UTCJul 22, 14:05 UTC1h 16m
2026-07-22 ACA470 YYZ → YOW Jul 22, 05:39 UTCJul 22, 06:16 UTC37m
2026-07-22 ACA270 YWG → YYZ Jul 22, 02:05 UTCJul 22, 03:55 UTC1h 50m
2026-07-21 ACA267 YYZ → YWG Jul 21, 22:40 UTCJul 22, 00:55 UTC2h 15m
2026-07-21 ACA641 YYZ → YYZ Jul 21, 20:55 UTCJul 21, 21:00 UTC5m
2026-07-21 ACA641 YSJ → YYZ Jul 21, 18:59 UTCJul 21, 20:36 UTC1h 37m
2026-07-21 ACA638 YYZ → YSJ Jul 21, 14:55 UTCJul 21, 16:30 UTC1h 35m
2026-07-21 ACA701 LGA → YYZ Jul 21, 11:45 UTCJul 21, 12:55 UTC1h 10m
2026-07-21 ACA724 YYZ → LGA Jul 21, 01:15 UTCJul 21, 02:10 UTC55m
2026-07-20 ACA266 YWG → YYZ Jul 20, 21:00 UTCJul 20, 23:10 UTC2h 10m
2026-07-20 ACA266 YWG → YYZ Jul 20, 20:59 UTCJul 20, 22:57 UTC1h 58m
2026-07-20 ACA263 YYZ → YWG Jul 20, 17:15 UTCJul 20, 19:25 UTC2h 10m
2026-07-20 ACA258 YWG → YYZ Jul 20, 13:30 UTCJul 20, 15:30 UTC2h 0m
2026-07-20 ACA269 - Jul 20, 00:20 UTCJul 20, 02:35 UTC2h 15m
2026-07-20 ACA269 YYZ → YWG Jul 20, 00:17 UTCJul 20, 02:28 UTC2h 11m
2026-07-19 ACA266 YWG → YYZ Jul 19, 20:25 UTCJul 19, 22:25 UTC2h 0m
2026-07-19 ACA263 YYZ → YWG Jul 19, 17:00 UTCJul 19, 19:15 UTC2h 15m
2026-07-19 ACA160 YEG → YYZ Jul 19, 12:05 UTCJul 19, 15:10 UTC3h 5m
2026-07-19 ACA175 YYZ → YEG Jul 19, 04:05 UTCJul 19, 07:55 UTC3h 50m
2026-07-18 ACA184 YVR → YYZ Jul 18, 20:55 UTCJul 19, 00:15 UTC3h 20m
2026-07-18 ACA184 YVR → YYZ Jul 18, 20:52 UTCJul 19, 00:34 UTC3h 42m
2026-07-18 ACA109 YYZ → YVR Jul 18, 14:40 UTCJul 18, 19:25 UTC4h 45m
2026-07-18 ACA1501 EWR → YYZ Jul 18, 10:50 UTCJul 18, 11:50 UTC1h 0m
2026-07-18 ACA1512 YYZ → EWR Jul 18, 02:29 UTCJul 18, 03:35 UTC1h 6m
2026-07-17 ACA740 - Jul 17, 19:05 UTCJul 17, 23:20 UTC4h 15m
2026-07-17 ACA739 - Jul 17, 12:45 UTCJul 17, 17:25 UTC4h 40m
2026-07-17 ACA439 - Jul 17, 09:20 UTCJul 17, 10:00 UTC40m
2026-07-17 ACA470 - Jul 17, 03:55 UTCJul 17, 04:29 UTC35m

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 Jul 26, 22:15 UTC.
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 ACA266, ACA269, ACA687, ACA410, ACA160.