Apparatus

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sensors Mode-S transponder

C08172

ICAO 24-bit transponder address · allocated to Canada

Hex
C08172
Octal
60100562
Decimal
12,616,050
Country
CA
No current signal · last broadcast 13d ago
Flights observed
89
Distinct callsigns
20
Country
CA
Last broadcast
13d ago

Last known position

Most recent position reported by Mode-S C08172.

Country allocation

The ICAO 24-bit address C08172 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
ACA328 Air Canada 12 2026-07-21
ACA327 Air Canada 12 2026-07-21
ACA878 Air Canada 11 2026-07-25
ACA879 Air Canada 10 2026-07-25
ACA324 Air Canada 10 2026-07-22
ACA317 - 10 2026-07-22
ACA429 - 3 2026-07-01
ACA945 Air Canada 2 2026-07-26
ACA944 Air Canada 2 2026-07-26
ACA480 - 2 2026-07-01
ACA418 - 2 2026-07-12
ACA413 - 2 2026-07-12
ACA376 - 2 2026-07-15
ACA373 - 2 2026-07-15
ACA927 Air Canada 1 2026-07-23
ACA926 Air Canada 1 2026-07-23
ACA7137 Air Canada 1 2026-06-03
ACA7136 - 1 2026-06-14
ACA416 - 1 2026-07-08
ACA409 - 1 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA945 PUJ → YUL Jul 26, 10:10 UTCJul 26, 18:05 UTC7h 55m
2026-07-26 ACA944 YUL → PUJ Jul 26, 01:20 UTCJul 26, 08:05 UTC6h 46m
2026-07-25 ACA879 ZRH → YYZ Jul 25, 11:50 UTCJul 25, 18:55 UTC7h 5m
2026-07-25 ACA878 YYZ → ZRH Jul 25, 02:05 UTCJul 25, 07:35 UTC5h 30m
2026-07-25 ACA878 YYZ → ZRH Jul 25, 00:45 UTCJul 25, 01:55 UTC1h 10m
2026-07-24 ACA879 ZRH → YYZ Jul 24, 12:05 UTCJul 24, 19:15 UTC7h 10m
2026-07-24 ACA878 YYZ → ZRH Jul 24, 00:30 UTCJul 24, 07:30 UTC7h 0m
2026-07-23 ACA927 CUN → YYZ Jul 23, 10:45 UTCJul 23, 17:25 UTC6h 40m
2026-07-23 ACA926 YUL → FLL Jul 23, 02:15 UTCJul 23, 08:35 UTC6h 20m
2026-07-22 ACA324 YYC → YUL Jul 22, 18:25 UTCJul 22, 22:00 UTC3h 35m
2026-07-22 ACA317 YUL → YYC Jul 22, 12:35 UTCJul 22, 16:45 UTC4h 10m
2026-07-21 ACA324 YYC → YUL Jul 21, 18:50 UTCJul 21, 22:40 UTC3h 50m
2026-07-21 ACA317 YUL → YYC Jul 21, 12:50 UTCJul 21, 16:55 UTC4h 5m
2026-07-21 ACA328 YYC → YUL Jul 21, 07:35 UTCJul 21, 11:15 UTC3h 40m
2026-07-21 ACA327 YUL → YYC Jul 21, 01:25 UTCJul 21, 05:30 UTC4h 5m
2026-07-20 ACA324 YYC → YUL Jul 20, 18:30 UTCJul 20, 21:55 UTC3h 25m
2026-07-20 ACA317 YUL → YYC Jul 20, 13:00 UTCJul 20, 17:05 UTC4h 5m
2026-07-20 ACA328 YYC → YUL Jul 20, 07:50 UTCJul 20, 11:20 UTC3h 30m
2026-07-20 ACA327 YUL → YYC Jul 20, 02:10 UTCJul 20, 06:25 UTC4h 15m
2026-07-19 ACA945 PUJ → YUL Jul 19, 11:45 UTCJul 19, 19:55 UTC8h 10m
2026-07-19 ACA944 YUL → PUJ Jul 19, 02:00 UTCJul 19, 09:15 UTC7h 15m
2026-07-18 ACA324 YYC → YUL Jul 18, 18:55 UTCJul 18, 22:20 UTC3h 25m
2026-07-18 ACA317 YUL → YYC Jul 18, 13:10 UTCJul 18, 17:30 UTC4h 20m
2026-07-18 ACA328 YYC → YUL Jul 18, 08:10 UTCJul 18, 11:35 UTC3h 25m
2026-07-18 ACA327 YUL → YYC Jul 18, 02:25 UTCJul 18, 06:45 UTC4h 21m
2026-07-17 ACA324 YYC → YUL Jul 17, 18:44 UTCJul 17, 22:05 UTC3h 20m
2026-07-17 ACA317 YUL → YYC Jul 17, 12:55 UTCJul 17, 17:15 UTC4h 20m
2026-07-17 ACA328 YYC → YUL Jul 17, 07:35 UTCJul 17, 11:10 UTC3h 35m
2026-07-17 ACA327 - Jul 17, 01:20 UTCJul 17, 05:45 UTC4h 25m
2026-07-16 ACA324 - Jul 16, 18:34 UTCJul 16, 21:55 UTC3h 20m
2026-07-16 ACA317 YUL → YYC Jul 16, 13:00 UTCJul 16, 17:14 UTC4h 15m
2026-07-16 ACA328 YYC → YUL Jul 16, 07:30 UTCJul 16, 11:05 UTC3h 35m
2026-07-16 ACA327 YUL → YYC Jul 16, 01:35 UTCJul 16, 05:50 UTC4h 15m
2026-07-15 ACA376 YWG → YUL Jul 15, 21:35 UTCJul 15, 23:40 UTC2h 5m
2026-07-15 ACA373 YUL → YWG Jul 15, 17:35 UTCJul 15, 20:25 UTC2h 50m
2026-07-15 ACA328 YYC → YUL Jul 15, 07:45 UTCJul 15, 11:15 UTC3h 30m
2026-07-15 ACA327 YUL → YYC Jul 15, 01:35 UTCJul 15, 05:55 UTC4h 20m
2026-07-14 ACA324 YYC → YUL Jul 14, 18:35 UTCJul 14, 21:50 UTC3h 15m
2026-07-14 ACA317 YUL → YYC Jul 14, 13:00 UTCJul 14, 17:10 UTC4h 10m
2026-07-14 ACA328 YYC → YUL Jul 14, 07:40 UTCJul 14, 11:05 UTC3h 25m
2026-07-14 ACA327 YUL → YYC Jul 14, 01:05 UTCJul 14, 05:20 UTC4h 15m
2026-07-13 ACA324 YYC → YUL Jul 13, 18:30 UTCJul 13, 21:55 UTC3h 25m
2026-07-13 ACA317 YUL → YYC Jul 13, 12:55 UTCJul 13, 17:05 UTC4h 10m
2026-07-13 ACA328 YYC → YUL Jul 13, 07:30 UTCJul 13, 11:15 UTC3h 45m
2026-07-13 ACA327 YUL → YYC Jul 13, 01:30 UTCJul 13, 05:45 UTC4h 15m
2026-07-12 ACA418 YYZ → YUL Jul 12, 20:10 UTCJul 12, 21:10 UTC1h 0m
2026-07-12 ACA413 YUL → YYZ Jul 12, 17:50 UTCJul 12, 18:35 UTC45m
2026-07-12 ACA328 YYC → YUL Jul 12, 08:01 UTCJul 12, 11:25 UTC3h 25m
2026-07-12 ACA327 YUL → YYC Jul 12, 02:10 UTCJul 12, 06:20 UTC4h 10m
2026-07-11 ACA879 TLS → YUL Jul 11, 11:40 UTCJul 11, 19:05 UTC7h 25m

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.

Mode-S C08172 frequently asked

What is Mode-S code C08172?
C08172 is an ICAO 24-bit transponder address. Allocated to Canada.
Where is Mode-S C08172 registered?
Mode-S code C08172 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C08172 broadcasting right now?
No active broadcast right now. Last signal was 13d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C08172, octal 60100562, decimal 12,616,050.
What flights does C08172 operate?
Mode-S C08172 has broadcast 20 distinct callsigns, including ACA328, ACA327, ACA878, ACA879, ACA324.