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sensors Mode-S transponder

C051E4

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GFAH · AIRBUS A-330-300 · operated by Air Canada

Hex
C051E4
Octal
60050744
Decimal
12,603,876
Country
CA
Tail
C-GFAH
Type
A333
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
284
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S C051E4.

Country allocation

The ICAO 24-bit address C051E4 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
ACA813 Air Canada 15 2026-07-21
ACA895 - 13 2026-07-05
ACA865 - 11 2026-06-18
ACA812 Air Canada 11 2026-07-21
ACA894 - 9 2026-07-05
ACA864 - 9 2026-06-18
ACA815 Air Canada 9 2026-07-19
ACA889 - 8 2026-07-06
ACA835 - 8 2026-07-18
ACA814 Air Canada 8 2026-07-19
ACA888 - 7 2026-07-06
ACA906 Air Canada 6 2026-07-25
ACA866 - 6 2026-07-05
ACA834 Air Canada 6 2026-07-22
ACA934 Air Canada 5 2026-07-26
ACA851 Air Canada 5 2026-05-23
ACA809 Air Canada 5 2026-05-22
ACA802 Air Canada 5 2026-06-14
ACA306 Air Canada 5 2026-05-26
ACA301 Air Canada 5 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ACA836 YYZ → MUC Jul 26, 22:05 UTCJul 26, 23:00 UTC55m
2026-07-26 ACA935 PRG → YYZ Jul 26, 10:50 UTCJul 26, 19:05 UTC8h 15m
2026-07-26 ACA934 YYZ → PUJ Jul 26, 01:10 UTCJul 26, 03:00 UTC1h 50m
2026-07-26 ACA934 YYZ → PUJ Jul 26, 01:09 UTCJul 26, 08:23 UTC7h 14m
2026-07-25 ACA907 FCO → YYZ Jul 25, 13:30 UTCJul 25, 22:15 UTC8h 45m
2026-07-25 ACA906 YYZ → FCO Jul 25, 01:40 UTCJul 25, 09:35 UTC7h 55m
2026-07-24 ACA907 FCO → YYZ Jul 24, 13:10 UTCJul 24, 21:50 UTC8h 40m
2026-07-24 ACA906 YYZ → FCO Jul 24, 01:45 UTCJul 24, 09:30 UTC7h 45m
2026-07-23 ACA825 MAD → YYZ Jul 23, 12:15 UTCJul 23, 19:50 UTC7h 35m
2026-07-22 ACA834 YYZ → BRU Jul 22, 22:15 UTCJul 23, 04:40 UTC6h 25m
2026-07-22 ACA823 BCN → YUL Jul 22, 11:10 UTCJul 22, 18:10 UTC7h 0m
2026-07-21 ACA822 YYT → LHR Jul 21, 23:05 UTCJul 22, 05:25 UTC6h 20m
2026-07-21 ACA813 LIS → YUL Jul 21, 10:35 UTCJul 21, 17:05 UTC6h 30m
2026-07-21 ACA812 YUL → LIS Jul 21, 02:09 UTCJul 21, 08:15 UTC6h 6m
2026-07-21 ACA812 YUL → LIS Jul 21, 02:10 UTCJul 21, 03:00 UTC50m
2026-07-19 ACA815 BCN → YYZ Jul 19, 17:40 UTCJul 19, 17:45 UTC5m
2026-07-19 ACA815 BCN → YYZ Jul 19, 10:05 UTCJul 19, 17:45 UTC7h 40m
2026-07-19 ACA815 BCN → YYZ Jul 19, 10:01 UTCJul 19, 17:22 UTC7h 21m
2026-07-19 ACA814 YYZ → BCN Jul 19, 00:45 UTCJul 19, 07:50 UTC7h 5m
2026-07-18 ACA835 - Jul 18, 11:10 UTCJul 18, 18:15 UTC7h 5m
2026-07-17 ACA834 YYZ → BRU Jul 17, 23:00 UTCJul 18, 05:15 UTC6h 16m
2026-07-17 ACA805 CPH → YUL Jul 17, 12:30 UTCJul 17, 19:40 UTC7h 10m
2026-07-17 ACA828 - Jul 17, 03:20 UTCJul 17, 10:35 UTC7h 15m
2026-07-16 ACA903 - Jul 16, 19:10 UTCJul 16, 19:14 UTC5m
2026-07-16 ACA903 - Jul 16, 11:30 UTCJul 16, 18:59 UTC7h 30m
2026-07-16 ACA903 ARN → YYZ Jul 16, 11:27 UTCJul 16, 18:55 UTC7h 28m
2026-07-16 ACA902 YYZ → ARN Jul 16, 02:10 UTCJul 16, 09:25 UTC7h 15m
2026-07-15 ACA935 PRG → YYZ Jul 15, 13:10 UTCJul 15, 21:25 UTC8h 15m
2026-07-15 ACA934 YYZ → PRG Jul 15, 03:23 UTCJul 15, 10:58 UTC7h 35m
2026-07-15 ACA934 YYZ → PRG Jul 15, 03:25 UTCJul 15, 11:10 UTC7h 45m
2026-07-14 ACA907 - Jul 14, 13:25 UTCJul 14, 22:25 UTC9h 0m
2026-07-14 ACA906 - Jul 14, 03:10 UTCJul 14, 09:55 UTC6h 45m
2026-07-14 ACA906 - Jul 14, 01:45 UTCJul 14, 03:05 UTC1h 20m
2026-07-13 ACA907 - Jul 13, 13:35 UTCJul 13, 22:30 UTC8h 55m
2026-07-13 ACA906 YYZ → FCO Jul 13, 02:58 UTCJul 13, 11:07 UTC8h 9m
2026-07-13 ACA906 - Jul 13, 03:01 UTCJul 13, 11:10 UTC8h 10m
2026-07-12 ACA825 - Jul 12, 12:05 UTCJul 12, 19:50 UTC7h 45m
2026-07-12 ACA824 - Jul 12, 00:40 UTCJul 12, 02:40 UTC2h 0m
2026-07-12 ACA824 YYZ → MAD Jul 12, 00:37 UTCJul 12, 07:23 UTC6h 46m
2026-07-11 ACA935 - Jul 11, 12:05 UTCJul 11, 19:15 UTC7h 10m
2026-07-11 ACA935 - Jul 11, 10:55 UTCJul 11, 12:00 UTC1h 5m
2026-07-11 ACA934 YYZ → PRG Jul 11, 01:05 UTCJul 11, 08:35 UTC7h 30m
2026-07-10 ACA2396 YUL → YYZ Jul 10, 21:05 UTCJul 10, 22:00 UTC55m
2026-07-10 ACA813 LIS → YUL Jul 10, 10:50 UTCJul 10, 17:35 UTC6h 45m
2026-07-10 ACA812 YUL → LIS Jul 10, 02:30 UTCJul 10, 08:14 UTC5h 44m
2026-07-10 ACA812 YUL → LIS Jul 10, 02:35 UTCJul 10, 08:25 UTC5h 50m
2026-07-09 ACA1403 - Jul 9, 18:55 UTCJul 9, 22:35 UTC3h 40m
2026-07-09 ACA1400 YUL → CUN Jul 9, 13:10 UTCJul 9, 17:00 UTC3h 50m
2026-07-08 ACA7055 - Jul 8, 14:25 UTCJul 8, 21:40 UTC7h 15m
2026-07-08 ACA804 YUL → CPH Jul 8, 00:30 UTCJul 8, 07:20 UTC6h 50m

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

Mode-S C051E4 frequently asked

What is Mode-S code C051E4?
C051E4 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GFAH.
Where is Mode-S C051E4 registered?
Mode-S code C051E4 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C051E4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C051E4, octal 60050744, decimal 12,603,876.
What flights does C051E4 operate?
Mode-S C051E4 has broadcast 20 distinct callsigns, including ACA813, ACA895, ACA865, ACA812, ACA894.