Apparatus

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sensors Mode-S transponder

C04B57

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-GCNU · BOEING 737-300 · operated by Bradley Air Services Limited

Hex
C04B57
Octal
60045527
Decimal
12,602,199
Country
CA
Tail
C-GCNU
Type
B733
No current signal · last broadcast 10d ago
Flights observed
107
Distinct callsigns
20
Country
CA
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S C04B57.

Country allocation

The ICAO 24-bit address C04B57 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
AKT1760 - 14 2026-06-18
AKT1704 - 11 2026-06-29
AKT1761 - 10 2026-06-29
AKT1735 Karat 10 2026-07-01
AKT5010 - 8 2026-07-01
AKT1741 Karat 7 2026-06-17
AKT1740 - 7 2026-07-01
AKT1748 - 5 2026-06-25
AKT1749 Karat 3 2026-05-22
AKT1703 Karat 3 2026-06-01
AKT1702 Karat 3 2026-06-01
AKT1603 Karat 3 2026-06-09
AKT5011 Karat 2 2026-06-22
AKT1729 Karat 2 2026-05-16
AKT1728 Karat 2 2026-05-16
AKT1602 Karat 2 2026-05-12
AKT6174 - 1 2026-06-21
AKT6171 Karat 1 2026-05-25
AKT6170 Karat 1 2026-05-24
AKT6116 - 1 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 AKT1727 YEG → YYC Jul 3, 23:35 UTCJul 4, 00:05 UTC30m
2026-07-03 AKT1726 HZP → YEG Jul 3, 21:05 UTCJul 3, 21:35 UTC30m
2026-07-02 AKT247 - Jul 2, 14:05 UTCJul 3, 03:30 UTC13h 25m
2026-07-02 AKT1745 - Jul 2, 02:10 UTCJul 2, 04:20 UTC2h 10m
2026-07-01 AKT1722 YYC → YEG Jul 1, 21:30 UTCJul 2, 00:25 UTC2h 55m
2026-07-01 AKT1735 YEG → YYC Jul 1, 17:25 UTCJul 1, 17:55 UTC30m
2026-07-01 AKT1735 YEG → YYC Jul 1, 15:05 UTCJul 1, 15:40 UTC35m
2026-07-01 AKT5010 - Jul 1, 13:00 UTCJul 1, 13:45 UTC45m
2026-07-01 AKT1740 YYC → YYC Jul 1, 00:45 UTCJul 1, 03:50 UTC3h 5m
2026-06-29 AKT1761 YYC → YYC Jun 29, 23:49 UTCJun 30, 02:25 UTC2h 36m
2026-06-29 AKT1704 YYC → YYC Jun 29, 13:09 UTCJun 29, 15:45 UTC2h 35m
2026-06-29 AKT6116 YYC → YYC Jun 29, 04:45 UTCJun 29, 10:15 UTC5h 30m
2026-06-25 AKT1748 YYC → YYC Jun 25, 23:19 UTCJun 26, 03:05 UTC3h 45m
2026-06-24 AKT1740 YYC → YYC Jun 24, 23:50 UTCJun 25, 03:10 UTC3h 20m
2026-06-24 AKT1735 YEG → YYC Jun 24, 15:39 UTCJun 24, 16:50 UTC1h 10m
2026-06-24 AKT5010 - Jun 24, 13:20 UTCJun 24, 13:54 UTC35m
2026-06-24 AKT1740 YYC → YYC Jun 24, 00:20 UTCJun 24, 03:24 UTC3h 5m
2026-06-22 AKT5011 YEG → YYC Jun 22, 13:49 UTCJun 22, 16:34 UTC2h 45m
2026-06-21 AKT6174 - Jun 21, 13:59 UTCJun 21, 17:20 UTC3h 20m
2026-06-19 AKT1765 HZP → YEG Jun 19, 02:39 UTCJun 19, 02:54 UTC15m
2026-06-19 AKT5014 YEG → HZP Jun 19, 00:55 UTCJun 19, 01:10 UTC15m
2026-06-18 AKT1763 - Jun 18, 23:25 UTCJun 18, 23:35 UTC10m
2026-06-18 AKT1760 - Jun 18, 21:05 UTCJun 18, 21:35 UTC30m
2026-06-17 AKT1761 YYC → YYC Jun 17, 23:35 UTCJun 18, 02:25 UTC2h 50m
2026-06-17 AKT1704 YYC → HZP Jun 17, 12:10 UTCJun 17, 15:15 UTC3h 5m
2026-06-17 AKT1741 HZP → YYC Jun 17, 00:10 UTCJun 17, 03:05 UTC2h 55m
2026-06-15 AKT1704 YYC → HZP Jun 15, 13:00 UTCJun 15, 15:45 UTC2h 45m
2026-06-11 AKT1760 YYC → YYC Jun 11, 22:05 UTCJun 12, 00:50 UTC2h 46m
2026-06-10 AKT1740 YYC → HZP Jun 10, 23:45 UTCJun 11, 02:55 UTC3h 10m
2026-06-10 AKT1735 YEG → YYC Jun 10, 16:25 UTCJun 10, 17:00 UTC35m
2026-06-10 AKT5010 YEG → YYC Jun 10, 13:15 UTCJun 10, 15:50 UTC2h 35m
2026-06-09 AKT1760 YYC → YYC Jun 9, 23:10 UTCJun 10, 02:15 UTC3h 5m
2026-06-09 AKT1603 YFI → YYC Jun 9, 20:00 UTCJun 9, 20:35 UTC35m
2026-06-08 AKT1704 YYC → HZP Jun 8, 13:10 UTCJun 8, 15:55 UTC2h 45m
2026-06-05 AKT1761 YYC → YYC Jun 5, 03:00 UTCJun 5, 03:35 UTC35m
2026-06-04 AKT1761 YYC → YYC Jun 4, 21:15 UTCJun 5, 00:35 UTC3h 20m
2026-06-03 AKT1760 YYC → YYC Jun 3, 23:40 UTCJun 4, 02:20 UTC2h 40m
2026-06-03 AKT1704 YYC → HZP Jun 3, 12:20 UTCJun 3, 15:10 UTC2h 50m
2026-06-03 AKT1741 HZP → YYC Jun 3, 00:25 UTCJun 3, 03:20 UTC2h 55m
2026-06-01 1761 YYC → YYC Jun 1, 23:40 UTCJun 2, 02:45 UTC3h 5m
2026-06-01 AKT1703 HZP → YYC Jun 1, 14:50 UTCJun 1, 15:35 UTC45m
2026-06-01 AKT1702 YEG → HZP Jun 1, 13:05 UTCJun 1, 13:20 UTC15m
2026-06-01 1702 - Jun 1, 11:50 UTCJun 1, 12:15 UTC25m
2026-05-28 AKT1760 YYC → YYC May 28, 21:10 UTCMay 29, 00:15 UTC3h 5m
2026-05-27 AKT1741 HZP → YYC May 27, 23:40 UTCMay 28, 03:00 UTC3h 20m
2026-05-27 AKT1735 YEG → YYC May 27, 16:20 UTCMay 27, 16:55 UTC35m
2026-05-27 AKT1735 YEG → YYC May 27, 15:30 UTCMay 27, 15:45 UTC15m
2026-05-27 AKT5010 YEG → YYC May 27, 12:55 UTCMay 27, 13:25 UTC30m
2026-05-27 AKT1740 YYC → HZP May 27, 00:10 UTCMay 27, 03:04 UTC2h 55m
2026-05-25 AKT1704 YYC → HZP May 25, 13:00 UTCMay 25, 15:40 UTC2h 40m

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

Mode-S C04B57 frequently asked

What is Mode-S code C04B57?
C04B57 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GCNU.
Where is Mode-S C04B57 registered?
Mode-S code C04B57 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C04B57 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C04B57, octal 60045527, decimal 12,602,199.
What flights does C04B57 operate?
Mode-S C04B57 has broadcast 20 distinct callsigns, including AKT1760, AKT1704, AKT1761, AKT1735, AKT5010.