Apparatus

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sensors Mode-S transponder

C07971

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GTZS · AIRBUS A220-300 · operated by Air Canada

Hex
C07971
Octal
60074561
Decimal
12,614,001
Country
CA
Tail
C-GTZS
Type
BCS3
No current signal · last broadcast Jul 26, 21:55 UTC
Flights observed
447
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 21:55 UTC

Last known position

Most recent position reported by Mode-S C07971.

Country allocation

The ICAO 24-bit address C07971 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
ACA568 Air Canada 7 2026-07-24
ACA376 Air Canada 7 2026-07-21
ACA1577 Air Canada 7 2026-06-25
ACA1544 Air Canada 7 2026-06-27
ACA757 Air Canada 6 2026-07-23
ACA567 Air Canada 6 2026-07-23
ACA1564 Air Canada 6 2026-06-29
ACA1556 Air Canada 6 2026-06-23
ACA660 - 5 2026-07-03
ACA573 Air Canada 5 2026-07-24
ACA375 - 5 2026-07-20
ACA1559 Air Canada 5 2026-06-23
ACA1205 Air Canada 5 2026-04-21
ACA795 Air Canada 4 2026-06-11
ACA723 - 4 2026-07-11
ACA667 Air Canada 4 2026-04-16
ACA414 - 4 2026-06-28
ACA374 Air Canada 4 2026-05-29
ACA371 Air Canada 4 2026-05-29
ACA1553 Air Canada 4 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA1543 YYT → YYZ Jul 26, 20:45 UTCJul 26, 21:45 UTC1h 0m
2026-07-26 ACA1540 YYZ → YYT Jul 26, 18:15 UTCJul 26, 19:15 UTC1h 0m
2026-07-26 ACA504 ORD → YYZ Jul 26, 15:05 UTCJul 26, 16:10 UTC1h 5m
2026-07-26 ACA503 YYZ → ORD Jul 26, 12:20 UTCJul 26, 13:40 UTC1h 20m
2026-07-26 ACA503 YYZ → ORD Jul 26, 12:20 UTCJul 26, 13:28 UTC1h 8m
2026-07-26 ACA1038 DEN → YYZ Jul 26, 00:30 UTCJul 26, 03:10 UTC2h 40m
2026-07-25 ACA576 LAS → YUL Jul 25, 20:30 UTCJul 25, 22:45 UTC2h 15m
2026-07-25 ACA575 YUL → LAS Jul 25, 15:25 UTCJul 25, 18:00 UTC2h 35m
2026-07-25 ACA1041 YYZ → DEN Jul 25, 00:10 UTCJul 25, 03:05 UTC2h 55m
2026-07-24 ACA1122 YXE → YYZ Jul 24, 18:20 UTCJul 24, 21:05 UTC2h 45m
2026-07-24 ACA1122 YXE → YYZ Jul 24, 18:19 UTCJul 24, 21:01 UTC2h 42m
2026-07-24 ACA1106 YVR → YXE Jul 24, 15:34 UTCJul 24, 17:04 UTC1h 30m
2026-07-24 ACA1106 YVR → YXE Jul 24, 15:35 UTCJul 24, 16:15 UTC40m
2026-07-24 ACA573 DEN → YVR Jul 24, 03:35 UTCJul 24, 05:35 UTC2h 0m
2026-07-24 ACA568 YVR → SFO Jul 24, 00:21 UTCJul 24, 02:24 UTC2h 3m
2026-07-24 ACA568 YVR → SFO Jul 24, 00:25 UTCJul 24, 02:35 UTC2h 10m
2026-07-23 ACA567 SFO → YVR Jul 23, 20:25 UTCJul 23, 22:05 UTC1h 40m
2026-07-23 ACA567 SFO → YVR Jul 23, 20:21 UTCJul 23, 21:56 UTC1h 35m
2026-07-23 ACA757 BOS → YUL Jul 23, 13:21 UTCJul 23, 18:49 UTC5h 28m
2026-07-23 ACA757 BOS → YUL Jul 23, 13:25 UTCJul 23, 19:05 UTC5h 40m
2026-07-23 ACA328 YYC → YUL Jul 23, 07:25 UTCJul 23, 11:15 UTC3h 50m
2026-07-23 ACA327 YUL → YYC Jul 23, 01:45 UTCJul 23, 05:55 UTC4h 10m
2026-07-21 ACA376 YWG → YUL Jul 21, 23:45 UTCJul 21, 23:50 UTC5m
2026-07-21 ACA376 YWG → YUL Jul 21, 21:15 UTCJul 21, 22:10 UTC55m
2026-07-21 ACA376 YWG → YUL Jul 21, 21:14 UTCJul 21, 23:27 UTC2h 13m
2026-07-21 ACA373 YUL → YWG Jul 21, 17:25 UTCJul 21, 20:00 UTC2h 35m
2026-07-21 ACA372 YWG → YUL Jul 21, 13:10 UTCJul 21, 15:35 UTC2h 25m
2026-07-20 ACA375 YUL → YWG Jul 20, 23:34 UTCJul 21, 02:03 UTC2h 29m
2026-07-20 ACA375 YUL → YWG Jul 20, 23:35 UTCJul 21, 02:10 UTC2h 34m
2026-07-20 ACA1070 - Jul 20, 17:40 UTCJul 20, 21:05 UTC3h 25m
2026-07-20 ACA1070 DFW → YUL Jul 20, 17:39 UTCJul 20, 20:48 UTC3h 9m
2026-07-19 ACA1071 YUL → DFW Jul 19, 23:00 UTCJul 20, 02:15 UTC3h 15m
2026-07-19 ACA733 LGA → YUL Jul 19, 20:20 UTCJul 19, 21:15 UTC55m
2026-07-19 ACA732 YUL → LGA Jul 19, 17:50 UTCJul 19, 18:50 UTC1h 0m
2026-07-19 ACA731 LGA → YUL Jul 19, 15:15 UTCJul 19, 16:10 UTC55m
2026-07-19 ACA728 YUL → LGA Jul 19, 12:35 UTCJul 19, 13:40 UTC1h 5m
2026-07-19 ACA312 YVR → YUL Jul 19, 00:15 UTCJul 19, 04:35 UTC4h 20m
2026-07-19 ACA312 YVR → YUL Jul 19, 00:14 UTCJul 19, 04:31 UTC4h 17m
2026-07-18 ACA305 YUL → YVR Jul 18, 17:50 UTCJul 18, 23:05 UTC5h 15m
2026-07-18 ACA372 YWG → YUL Jul 18, 13:05 UTCJul 18, 15:25 UTC2h 20m
2026-07-18 ACA375 YUL → YWG Jul 18, 00:10 UTCJul 18, 02:55 UTC2h 46m
2026-07-17 ACA2335 YMX → YYZ Jul 17, 20:35 UTCJul 17, 21:50 UTC1h 15m
2026-07-17 ACA2335 YMX → YYZ Jul 17, 20:32 UTCJul 17, 21:34 UTC1h 2m
2026-07-17 ACA2332 MCI → YYZ Jul 17, 17:58 UTCJul 17, 18:59 UTC1h 1m
2026-07-17 ACA2332 MCI → YYZ Jul 17, 18:00 UTCJul 17, 19:09 UTC1h 10m
2026-07-16 ACA1401 CUN → YUL Jul 16, 15:10 UTCJul 16, 19:10 UTC4h 0m
2026-07-16 ACA1401 CUN → YUL Jul 16, 15:10 UTCJul 16, 18:59 UTC3h 49m
2026-07-15 ACA1402 - Jul 15, 21:20 UTCJul 16, 01:15 UTC3h 55m
2026-07-12 ACA758 SFO → YUL Jul 12, 19:05 UTCJul 13, 00:01 UTC4h 55m
2026-07-12 ACA562 - Jul 12, 15:40 UTCJul 12, 17:45 UTC2h 5m

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

Mode-S C07971 frequently asked

What is Mode-S code C07971?
C07971 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GTZS.
Where is Mode-S C07971 registered?
Mode-S code C07971 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C07971 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C07971, octal 60074561, decimal 12,614,001.
What flights does C07971 operate?
Mode-S C07971 has broadcast 20 distinct callsigns, including ACA568, ACA376, ACA1577, ACA1544, ACA757.