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
Broadcasting now · callsign WJA808 · 37,000 ft
Flights observed
266
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 22:45 UTC

Current position

C043CB is currently broadcasting. Map zoomed to live position.

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
WJA178 - 6 2026-07-03
WJA1553 - 6 2026-07-13
WJA1550 - 6 2026-07-13
WJA858 - 5 2026-06-30
WJA539 WestJet 5 2026-05-11
WJA265 WestJet 4 2026-06-02
WJA224 - 4 2026-07-12
WJA221 - 4 2026-07-13
WJA2053 - 4 2026-06-19
WJA2052 WestJet 4 2026-05-03
WJA179 - 4 2026-07-04
WJA1500 - 4 2026-07-15
WJA859 - 3 2026-06-28
WJA783 - 3 2026-07-10
WJA713 - 3 2026-06-28
WJA685 WestJet 3 2026-05-31
WJA681 - 3 2026-07-04
WJA680 - 3 2026-07-04
WJA592 - 3 2026-07-12
WJA544 - 3 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WJA541 YWG → YVR Jul 26, 20:45 UTCJul 26, 22:45 UTC2h 0m
2026-07-26 WJA383 YYZ → YWG Jul 26, 17:10 UTCJul 26, 19:30 UTC2h 20m
2026-07-19 WJA2100 YYZ → PUJ Jul 19, 13:40 UTCJul 19, 15:15 UTC1h 35m
2026-07-19 WJA2100 YYZ → PUJ Jul 19, 13:40 UTCJul 19, 23:50 UTC10h 11m
2026-07-19 WJA893 YOW → YYZ Jul 19, 11:10 UTCJul 19, 11:50 UTC40m
2026-07-19 WJA892 YYZ → YOW Jul 19, 03:30 UTCJul 19, 04:10 UTC40m
2026-07-18 WJA384 YWG → YYZ Jul 18, 21:35 UTCJul 18, 23:30 UTC1h 55m
2026-07-18 WJA538 YVR → YWG Jul 18, 17:15 UTCJul 18, 19:30 UTC2h 15m
2026-07-17 WJA315 YEG → YVR Jul 17, 21:01 UTCJul 18, 19:35 UTC22h 35m
2026-07-17 WJA308 - Jul 17, 18:19 UTCJul 17, 19:25 UTC1h 5m
2026-07-17 WJA308 YVR → YEG Jul 17, 18:18 UTCJul 18, 01:10 UTC6h 52m
2026-07-17 WJA109 YYC → YVR Jul 17, 15:44 UTCJul 17, 16:55 UTC1h 10m
2026-07-15 WJA1503 - Jul 15, 21:40 UTCJul 15, 23:40 UTC2h 0m
2026-07-15 WJA1500 YYC → SFO Jul 15, 17:20 UTCJul 15, 20:00 UTC2h 40m
2026-07-15 WJA514 YQQ → YYC Jul 15, 12:25 UTCJul 15, 13:35 UTC1h 10m
2026-07-15 WJA519 - Jul 15, 03:50 UTCJul 15, 05:00 UTC1h 10m
2026-07-14 WJA795 - Jul 14, 21:15 UTCJul 15, 02:10 UTC4h 54m
2026-07-14 WJA794 - Jul 14, 15:50 UTCJul 14, 19:15 UTC3h 25m
2026-07-13 WJA1553 - Jul 13, 18:05 UTCJul 13, 18:45 UTC40m
2026-07-13 WJA1553 SEA → YYC Jul 13, 18:01 UTCJul 14, 16:45 UTC22h 45m
2026-07-13 WJA1550 YYC → SEA Jul 13, 15:22 UTCJul 14, 04:10 UTC12h 49m
2026-07-13 WJA1550 YYC → SEA Jul 13, 15:25 UTCJul 13, 16:45 UTC1h 20m
2026-07-13 WJA221 YWG → YYC Jul 13, 11:00 UTCJul 13, 13:00 UTC2h 0m
2026-07-12 WJA593 - Jul 12, 22:50 UTCJul 13, 02:25 UTC3h 35m
2026-07-12 WJA592 - Jul 12, 18:15 UTCJul 12, 21:25 UTC3h 10m
2026-07-12 WJA224 YYC → YWG Jul 12, 15:30 UTCJul 12, 17:01 UTC1h 30m
2026-07-11 WJA1550 YYC → SEA Jul 11, 15:22 UTCJul 12, 03:15 UTC11h 54m
2026-07-10 WJA783 YQT → YYC Jul 10, 23:51 UTCJul 11, 22:45 UTC22h 55m
2026-07-10 WJA783 YQT → YYC Jul 10, 23:55 UTCJul 11, 02:25 UTC2h 30m
2026-07-10 WJA782 YYC → YQT Jul 10, 20:25 UTCJul 10, 22:35 UTC2h 10m
2026-07-10 WJA1553 SEA → YYC Jul 10, 17:40 UTCJul 10, 18:50 UTC1h 10m
2026-07-10 WJA1550 YYC → SEA Jul 10, 15:00 UTCJul 10, 16:15 UTC1h 15m
2026-07-10 WJA221 YWG → YYC Jul 10, 11:25 UTCJul 10, 13:10 UTC1h 45m
2026-07-09 WJA592 - Jul 9, 18:15 UTCJul 9, 18:45 UTC30m
2026-07-09 WJA224 YYC → YWG Jul 9, 15:30 UTCJul 9, 17:00 UTC1h 30m
2026-07-09 WJA224 YYC → YWG Jul 9, 15:30 UTCJul 10, 14:45 UTC23h 15m
2026-07-09 WJA1093 LAS → YYC Jul 9, 01:10 UTCJul 9, 03:35 UTC2h 25m
2026-07-08 WJA1090 YYC → LAS Jul 8, 21:35 UTCJul 9, 00:10 UTC2h 35m
2026-07-08 WJA1553 SEA → YYC Jul 8, 18:05 UTCJul 8, 19:15 UTC1h 10m
2026-07-08 WJA1550 YYC → SEA Jul 8, 15:05 UTCJul 8, 16:20 UTC1h 15m
2026-07-08 WJA221 YWG → YYC Jul 8, 11:05 UTCJul 8, 12:45 UTC1h 40m
2026-07-07 WJA593 - Jul 7, 22:45 UTCJul 8, 02:25 UTC3h 40m
2026-07-07 WJA592 - Jul 7, 18:15 UTCJul 7, 21:20 UTC3h 5m
2026-07-07 WJA224 YYC → YWG Jul 7, 15:20 UTCJul 7, 17:00 UTC1h 40m
2026-07-07 WJA393 - Jul 7, 12:10 UTCJul 7, 13:10 UTC1h 0m
2026-07-06 WJA136 YVR → YYC Jul 6, 13:49 UTCJul 7, 12:45 UTC22h 57m
2026-07-05 WJA118 - Jul 5, 21:50 UTCJul 5, 22:45 UTC55m
2026-07-05 WJA118 YVR → YYC Jul 5, 21:50 UTCJul 6, 20:20 UTC22h 31m
2026-07-05 WJA307 - Jul 5, 18:45 UTCJul 5, 20:00 UTC1h 15m
2026-07-04 WJA544 - Jul 4, 22:35 UTCJul 5, 00:45 UTC2h 10m

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?
Yes. Mode-S C043CB is currently airborne.
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 WJA178, WJA1553, WJA1550, WJA858, WJA539.