Apparatus

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sensors Mode-S transponder

C043CB

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FZRM · BOEING 737-800 · operated by Westjet

Hex
C043CB
Octal
60041713
Decimal
12,600,267
Country
CA
Tail
C-FZRM
Type
B738
No current signal · last broadcast 1h ago
Flights observed
134
Distinct callsigns
20
Country
CA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C043CB.

Country allocation

The ICAO 24-bit address C043CB 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
WJA539 WestJet 5 2026-05-11
WJA265 WestJet 4 2026-06-02
WJA2052 WestJet 4 2026-05-03
WJA685 WestJet 3 2026-05-31
WJA2601 WestJet 3 2026-04-17
WJA2224 - 3 2026-04-17
WJA2053 WestJet 3 2026-05-03
WJA178 WestJet 3 2026-05-26
WJA1610 WestJet 3 2026-05-28
WJA129 WestJet 3 2026-05-15
WJA127 WestJet 3 2026-05-20
WJA124 WestJet 3 2026-05-21
WJA748 WestJet 2 2026-05-16
WJA747 WestJet 2 2026-05-16
WJA731 WestJet 2 2026-05-14
WJA684 WestJet 2 2026-05-31
WJA681 WestJet 2 2026-05-11
WJA680 WestJet 2 2026-05-10
WJA588 WestJet 2 2026-04-23
WJA559 WestJet 2 2026-06-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 WJA189 YEG → YLW Jun 2, 22:59 UTCJun 3, 16:40 UTC17h 41m
2026-06-02 WJA272 YYZ → YHZ Jun 2, 20:15 UTCJun 2, 20:45 UTC30m
2026-06-02 WJA265 YYT → YYC Jun 2, 18:05 UTCJun 2, 19:15 UTC1h 10m
2026-06-02 WJA265 YYT → YYC Jun 2, 18:04 UTCJun 3, 16:40 UTC22h 36m
2026-06-01 WJA559 YXE → YEG Jun 1, 11:27 UTCJun 2, 00:05 UTC12h 39m
2026-06-01 WJA566 YYC → YUL Jun 1, 01:02 UTCJun 2, 00:05 UTC23h 4m
2026-05-31 WJA684 YZF → YYC May 31, 20:17 UTCJun 1, 18:45 UTC22h 29m
2026-05-31 WJA685 YYC → YZF May 31, 17:35 UTCMay 31, 18:05 UTC30m
2026-05-31 WJA685 YYC → YZF May 31, 17:31 UTCJun 1, 15:40 UTC22h 10m
2026-05-30 WJA1591 ATL → YYC May 30, 19:05 UTCMay 30, 23:10 UTC4h 5m
2026-05-30 WJA1590 YYC → ATL May 30, 13:15 UTCMay 30, 17:20 UTC4h 5m
2026-05-28 WJA1611 MSP → YYC May 28, 23:00 UTCMay 29, 02:00 UTC3h 0m
2026-05-28 WJA1610 YYC → MSP May 28, 18:30 UTCMay 28, 21:35 UTC3h 5m
2026-05-27 WJA120 YVR → YYC May 27, 22:55 UTCMay 27, 23:55 UTC1h 0m
2026-05-27 WJA119 YYC → YVR May 27, 20:40 UTCMay 27, 21:40 UTC1h 0m
2026-05-27 WJA397 YQR → YYC May 27, 17:55 UTCMay 27, 19:00 UTC1h 5m
2026-05-26 WJA178 YVR → YEG May 26, 22:05 UTCMay 26, 22:44 UTC40m
2026-05-26 WJA178 YVR → YEG May 26, 22:04 UTCMay 27, 20:45 UTC22h 42m
2026-05-25 WJA272 YYZ → YHZ May 25, 20:24 UTCMay 25, 20:45 UTC20m
2026-05-25 WJA265 YYT → YYC May 25, 17:48 UTCMay 26, 05:45 UTC11h 57m
2026-05-25 WJA265 YYT → YYC May 25, 17:50 UTCMay 25, 19:05 UTC1h 15m
2026-05-25 WJA559 YXE → YEG May 25, 11:35 UTCMay 25, 15:45 UTC4h 10m
2026-05-24 WJA684 YZF → YYC May 24, 20:22 UTCMay 25, 18:45 UTC22h 24m
2026-05-24 WJA685 YYC → YZF May 24, 17:45 UTCMay 24, 21:50 UTC4h 5m
2026-05-24 WJA145 YYC → YMM May 24, 15:15 UTCMay 24, 15:50 UTC35m
2026-05-24 WJA154 YYJ → YYC May 24, 05:50 UTCMay 24, 06:15 UTC25m
2026-05-23 WJA2395 MZT → YYC May 23, 16:15 UTCMay 24, 02:00 UTC9h 46m
2026-05-23 WJA100 YVR → YYC May 23, 12:15 UTCMay 23, 13:15 UTC1h 0m
2026-05-22 WJA1610 YYC → MSP May 22, 18:35 UTCMay 22, 21:40 UTC3h 5m
2026-05-22 WJA1610 YYC → MSP May 22, 18:34 UTCMay 23, 16:45 UTC22h 11m
2026-05-22 WJA1593 ATL → YYC May 22, 12:45 UTCMay 22, 16:45 UTC4h 0m
2026-05-22 WJA1992 YYC → ATL May 22, 06:25 UTCMay 22, 10:15 UTC3h 50m
2026-05-21 WJA2240 YYC → PVR May 21, 14:33 UTCMay 22, 12:45 UTC22h 12m
2026-05-21 WJA124 YVR → YYC May 21, 00:50 UTCMay 22, 00:45 UTC23h 56m
2026-05-21 WJA124 YVR → YYC May 21, 00:50 UTCMay 21, 01:55 UTC1h 5m
2026-05-20 WJA1057 LAS → YVR May 20, 20:30 UTCMay 20, 23:05 UTC2h 35m
2026-05-20 WJA1056 YVR → LAS May 20, 16:50 UTCMay 20, 19:00 UTC2h 10m
2026-05-20 WJA127 YYC → YVR May 20, 00:20 UTCMay 20, 01:20 UTC1h 0m
2026-05-19 WJA137 YYC → YVR May 19, 06:21 UTCMay 20, 01:25 UTC19h 4m
2026-05-19 WJA1507 SFO → YYC May 19, 02:03 UTCMay 20, 00:45 UTC22h 42m
2026-05-18 WJA111 YYC → YVR May 18, 16:10 UTCMay 19, 07:40 UTC15h 30m
2026-05-18 WJA1027 LAX → YYC May 18, 02:37 UTCMay 19, 00:30 UTC21h 53m
2026-05-17 WJA1024 YYC → LAX May 17, 21:25 UTCMay 17, 23:55 UTC2h 30m
2026-05-17 WJA1024 YYC → LAX May 17, 21:26 UTCMay 18, 20:00 UTC22h 34m
2026-05-17 WJA227 YYC → YYJ May 17, 18:15 UTCMay 17, 20:01 UTC1h 45m
2026-05-17 WJA124 YVR → YYC May 17, 00:45 UTCMay 17, 22:40 UTC21h 56m
2026-05-16 WJA109 YYC → YVR May 16, 16:20 UTCMay 17, 01:55 UTC9h 36m
2026-05-16 WJA747 YXU → YYC May 16, 10:20 UTCMay 16, 10:46 UTC25m
2026-05-16 WJA747 YXU → YYC May 16, 10:15 UTCMay 17, 01:55 UTC15h 41m
2026-05-16 WJA748 YYC → YQY May 16, 05:51 UTCMay 16, 08:55 UTC3h 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-FZRM page for operator, model, and routing details .

Mode-S C043CB frequently asked

What is Mode-S code C043CB?
C043CB is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FZRM.
Where is Mode-S C043CB registered?
Mode-S code C043CB is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C043CB broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C043CB, octal 60041713, decimal 12,600,267.
What flights does C043CB operate?
Mode-S C043CB has broadcast 20 distinct callsigns, including WJA539, WJA265, WJA2052, WJA685, WJA2601.