Apparatus

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sensors Mode-S transponder

C041B9

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FYXC · BOEING 737 MAX 8 · operated by Westjet

Hex
C041B9
Octal
60040671
Decimal
12,599,737
Country
CA
Tail
C-FYXC
Type
B38M
Broadcasting now · callsign WJA1583 · 36,000 ft
Flights observed
192
Distinct callsigns
20
Country
CA
Last broadcast
22m ago

Current position

C041B9 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C041B9 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
WJA383 - 9 2026-07-10
WJA2902 WestJet 5 2026-05-17
WJA816 WestJet 4 2026-05-15
WJA720 - 4 2026-07-11
WJA627 WestJet 4 2026-06-27
WJA541 - 4 2026-07-04
WJA2963 WestJet 4 2026-05-21
WJA817 WestJet 3 2026-05-15
WJA781 WestJet 3 2026-05-06
WJA617 WestJet 3 2026-04-15
WJA571 - 3 2026-07-03
WJA569 WestJet 3 2026-05-25
WJA2908 WestJet 3 2026-04-28
WJA2903 WestJet 3 2026-05-01
WJA2898 WestJet 3 2026-05-18
WJA2776 WestJet 3 2026-04-13
WJA2772 WestJet 3 2026-04-16
WJA2625 - 3 2026-04-16
WJA1630 - 3 2026-04-15
WJA9495 WestJet 2 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 WJA1583 - Jul 14, 13:20 UTCJul 14, 14:15 UTC55m
2026-07-13 WJA1582 - Jul 13, 20:45 UTCJul 14, 00:25 UTC3h 40m
2026-07-13 WJA713 YYZ → YVR Jul 13, 13:45 UTCJul 13, 18:20 UTC4h 35m
2026-07-12 WJA644 YYC → YYZ Jul 12, 23:05 UTCJul 13, 02:20 UTC3h 15m
2026-07-12 WJA1411 - Jul 12, 15:40 UTCJul 12, 20:35 UTC4h 55m
2026-07-12 WJA1032 YYZ → MCO Jul 12, 11:55 UTCJul 12, 14:10 UTC2h 15m
2026-07-11 WJA720 YVR → YYZ Jul 11, 00:44 UTCJul 11, 19:50 UTC19h 7m
2026-07-10 WJA383 YYZ → YWG Jul 10, 16:55 UTCJul 11, 16:15 UTC23h 21m
2026-07-10 WJA383 - Jul 10, 16:55 UTCJul 10, 18:15 UTC1h 20m
2026-07-10 WJA378 YWG → YYZ Jul 10, 13:00 UTCJul 10, 15:05 UTC2h 5m
2026-07-09 WJA391 YYZ → YWG Jul 9, 23:25 UTCJul 10, 01:40 UTC2h 15m
2026-07-09 WJA378 YWG → YYZ Jul 9, 12:50 UTCJul 9, 14:50 UTC2h 0m
2026-07-08 WJA391 YYZ → YWG Jul 8, 23:15 UTCJul 9, 01:30 UTC2h 15m
2026-07-08 WJA2580 YYZ → YYZ Jul 8, 12:05 UTCJul 8, 19:05 UTC7h 0m
2026-07-07 WJA646 YYC → YYZ Jul 7, 21:45 UTCJul 8, 01:00 UTC3h 15m
2026-07-07 WJA639 - Jul 7, 16:15 UTCJul 7, 20:00 UTC3h 45m
2026-07-06 WJA809 - Jul 6, 19:05 UTCJul 6, 21:05 UTC2h 0m
2026-07-06 WJA802 - Jul 6, 15:15 UTCJul 6, 16:50 UTC1h 35m
2026-07-05 WJA383 YYZ → YWG Jul 5, 17:07 UTCJul 6, 16:15 UTC23h 9m
2026-07-04 WJA541 YWG → YVR Jul 4, 20:34 UTCJul 5, 19:25 UTC22h 52m
2026-07-04 WJA383 YYZ → YWG Jul 4, 17:05 UTCJul 5, 04:50 UTC11h 45m
2026-07-04 WJA383 YYZ → YWG Jul 4, 17:05 UTCJul 4, 19:20 UTC2h 15m
2026-07-04 WJA720 YVR → YYZ Jul 4, 01:05 UTCJul 4, 05:05 UTC4h 0m
2026-07-03 WJA541 YWG → YVR Jul 3, 20:40 UTCJul 3, 23:20 UTC2h 40m
2026-07-03 WJA571 - Jul 3, 03:10 UTCJul 3, 03:50 UTC40m
2026-07-03 WJA571 YYZ → YXE Jul 3, 03:10 UTCJul 4, 02:15 UTC23h 5m
2026-07-02 WJA712 YVR → YYZ Jul 2, 18:55 UTCJul 2, 22:55 UTC4h 0m
2026-07-02 WJA709 YYZ → YVR Jul 2, 12:25 UTCJul 2, 17:10 UTC4h 45m
2026-07-02 WJA460 - Jul 2, 00:20 UTCJul 2, 03:50 UTC3h 30m
2026-07-01 WJA455 YYZ → YEG Jul 1, 18:35 UTCJul 1, 22:20 UTC3h 45m
2026-07-01 WJA755 YYZ → YYZ Jul 1, 03:20 UTCJul 1, 14:35 UTC11h 15m
2026-06-30 WJA646 YYC → YYZ Jun 30, 21:35 UTCJul 1, 01:00 UTC3h 25m
2026-06-30 WJA639 YYZ → YYC Jun 30, 16:10 UTCJun 30, 19:45 UTC3h 35m
2026-06-30 WJA720 - Jun 30, 00:39 UTCJun 30, 05:00 UTC4h 21m
2026-06-29 WJA541 YWG → YVR Jun 29, 20:30 UTCJun 29, 22:59 UTC2h 30m
2026-06-29 WJA383 YYZ → YWG Jun 29, 16:55 UTCJun 29, 19:09 UTC2h 15m
2026-06-28 WJA454 YEG → YYZ Jun 28, 21:29 UTCJun 29, 18:14 UTC20h 46m
2026-06-28 WJA449 - Jun 28, 16:05 UTCJun 28, 19:44 UTC3h 40m
2026-06-28 WJA449 YYZ → YEG Jun 28, 16:05 UTCJun 29, 06:24 UTC14h 20m
2026-06-27 WJA644 YYC → YYZ Jun 27, 23:04 UTCJun 28, 02:29 UTC3h 25m
2026-06-27 WJA272 - Jun 27, 20:09 UTCJun 27, 21:15 UTC1h 5m
2026-06-27 WJA265 - Jun 27, 17:44 UTCJun 27, 18:49 UTC1h 5m
2026-06-27 WJA627 YYT → YYZ Jun 27, 10:10 UTCJun 27, 14:05 UTC3h 55m
2026-06-27 WJA720 YVR → YYZ Jun 27, 00:55 UTCJun 27, 04:54 UTC4h 0m
2026-06-26 WJA541 YWG → YVR Jun 26, 20:24 UTCJun 26, 23:15 UTC2h 50m
2026-06-26 WJA383 YYZ → YWG Jun 26, 16:54 UTCJun 26, 19:04 UTC2h 10m
2026-06-26 WJA570 - Jun 26, 12:10 UTCJun 26, 14:55 UTC2h 45m
2026-06-26 WJA571 - Jun 26, 03:15 UTCJun 26, 06:19 UTC3h 5m
2026-06-25 WJA2784 - Jun 25, 13:50 UTCJun 26, 00:50 UTC11h 0m
2026-06-25 WJA892 YYZ → YOW Jun 25, 03:39 UTCJun 26, 00:15 UTC20h 36m

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

Mode-S C041B9 frequently asked

What is Mode-S code C041B9?
C041B9 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FYXC.
Where is Mode-S C041B9 registered?
Mode-S code C041B9 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C041B9 broadcasting right now?
Yes. Mode-S C041B9 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C041B9, octal 60040671, decimal 12,599,737.
What flights does C041B9 operate?
Mode-S C041B9 has broadcast 20 distinct callsigns, including WJA383, WJA2902, WJA816, WJA720, WJA627.