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 1d ago
Flights observed
64
Distinct callsigns
19
Country
CA
Last broadcast
1d 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 19 distinct

Callsign Airline Flights Last seen
AKT1760 Karat 10 2026-05-28
AKT1761 Karat 6 2026-05-14
AKT1735 Karat 6 2026-05-27
AKT1704 Karat 6 2026-05-25
AKT5010 Karat 5 2026-05-27
AKT1741 Karat 5 2026-05-27
AKT1748 Karat 4 2026-05-21
AKT1749 Karat 3 2026-05-22
AKT1740 Karat 3 2026-05-27
AKT1729 Karat 2 2026-05-16
AKT1728 Karat 2 2026-05-16
AKT1703 Karat 2 2026-05-04
AKT1702 Karat 2 2026-05-04
AKT1603 Karat 2 2026-04-28
AKT1602 Karat 2 2026-05-12
AKT6171 Karat 1 2026-05-25
AKT6170 Karat 1 2026-05-24
AKT5011 Karat 1 2026-05-11
AKT1700 Karat 1 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-05-25 AKT6171 YYQ → YYC May 25, 01:55 UTCMay 25, 02:00 UTC5m
2026-05-24 AKT6170 YYC → YYQ May 24, 13:55 UTCMay 24, 15:35 UTC1h 40m
2026-05-22 AKT1749 HZP → YYC May 22, 02:35 UTCMay 22, 03:40 UTC1h 5m
2026-05-21 AKT1748 YYC → HZP May 21, 23:15 UTCMay 21, 23:50 UTC35m
2026-05-20 AKT1760 YYC → YYC May 20, 23:35 UTCMay 21, 02:25 UTC2h 50m
2026-05-20 AKT1704 YYC → HZP May 20, 12:15 UTCMay 20, 15:15 UTC3h 0m
2026-05-20 AKT1741 HZP → YYC May 20, 00:15 UTCMay 20, 03:10 UTC2h 55m
2026-05-19 AKT1704 YYC → HZP May 19, 12:05 UTCMay 19, 14:45 UTC2h 40m
2026-05-18 AKT1760 YYC → YYC May 18, 23:30 UTCMay 19, 02:15 UTC2h 45m
2026-05-16 AKT1729 JHL → YEG May 16, 03:45 UTCMay 16, 04:20 UTC35m
2026-05-16 AKT1729 JHL → YEG May 16, 02:55 UTCMay 16, 03:10 UTC15m
2026-05-16 AKT1728 YYC → YEG May 16, 01:00 UTCMay 16, 01:15 UTC15m
2026-05-16 AKT1728 YYC → YEG May 16, 00:05 UTCMay 16, 00:25 UTC20m
2026-05-14 AKT1761 YYC → YYC May 14, 22:10 UTCMay 15, 01:15 UTC3h 5m
2026-05-13 AKT1741 HZP → YYC May 13, 23:40 UTCMay 14, 03:20 UTC3h 40m
2026-05-13 AKT1735 YEG → YYC May 13, 16:30 UTCMay 13, 17:05 UTC35m
2026-05-13 AKT5010 YEG → YYC May 13, 13:05 UTCMay 13, 15:55 UTC2h 50m
2026-05-12 AKT1760 YYC → YYC May 12, 23:05 UTCMay 13, 01:55 UTC2h 50m
2026-05-12 AKT1602 YYC → YFI May 12, 15:45 UTCMay 12, 20:25 UTC4h 40m
2026-05-11 AKT5011 YEG → YYC May 11, 13:00 UTCMay 11, 15:35 UTC2h 35m
2026-05-08 AKT1749 HZP → YYC May 8, 03:14 UTCMay 8, 03:44 UTC30m
2026-05-07 AKT1748 YYC → HZP May 7, 23:19 UTCMay 8, 02:39 UTC3h 20m
2026-05-06 AKT1760 YYC → YYC May 6, 23:45 UTCMay 7, 02:35 UTC2h 50m
2026-05-06 AKT1704 YYC → HZP May 6, 12:10 UTCMay 6, 15:05 UTC2h 55m
2026-05-06 AKT1740 YYC → HZP May 6, 00:25 UTCMay 6, 03:20 UTC2h 55m
2026-05-05 AKT1700 HZP → YYC May 5, 13:15 UTCMay 5, 16:35 UTC3h 20m
2026-05-05 AKT1761 YYC → YYC May 5, 00:55 UTCMay 5, 03:15 UTC2h 20m
2026-05-04 AKT1760 YYC → YYC May 4, 23:40 UTCMay 5, 00:10 UTC30m
2026-05-04 AKT1703 HZP → YYC May 4, 13:00 UTCMay 4, 15:25 UTC2h 25m
2026-05-04 AKT1702 YEG → HZP May 4, 11:45 UTCMay 4, 12:15 UTC30m
2026-04-30 AKT1760 YYC → YYC Apr 30, 21:05 UTCMay 1, 00:05 UTC3h 0m
2026-04-29 AKT1741 HZP → YYC Apr 29, 23:35 UTCApr 30, 03:05 UTC3h 30m
2026-04-29 AKT1735 YEG → YYC Apr 29, 16:25 UTCApr 29, 16:55 UTC30m
2026-04-29 AKT1735 YEG → YYC Apr 29, 15:40 UTCApr 29, 15:50 UTC10m
2026-04-29 AKT5010 YEG → YYC Apr 29, 13:25 UTCApr 29, 14:00 UTC35m
2026-04-28 AKT1760 YYC → YYC Apr 28, 23:00 UTCApr 29, 01:54 UTC2h 55m
2026-04-28 AKT1603 YFI → YYC Apr 28, 15:45 UTCApr 28, 20:15 UTC4h 30m
2026-04-27 AKT1748 YYC → HZP Apr 27, 22:55 UTCApr 28, 01:45 UTC2h 50m
2026-04-27 AKT1704 YYC → HZP Apr 27, 13:35 UTCApr 27, 16:10 UTC2h 35m
2026-04-24 AKT1749 HZP → YYC Apr 24, 03:45 UTCApr 24, 04:15 UTC30m
2026-04-23 AKT1748 YYC → HZP Apr 23, 23:20 UTCApr 24, 03:05 UTC3h 45m
2026-04-22 AKT1761 YYC → YYC Apr 22, 23:40 UTCApr 23, 02:35 UTC2h 55m
2026-04-22 AKT1735 YEG → YYC Apr 22, 16:30 UTCApr 22, 17:05 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-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 1d 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 19 distinct callsigns, including AKT1760, AKT1761, AKT1735, AKT1704, AKT5010.