Apparatus

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sensors Mode-S transponder

C03BF5

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FWSI · BOEING 737-700 · operated by Westjet

Hex
C03BF5
Octal
60035765
Decimal
12,598,261
Country
CA
Tail
C-FWSI
Type
B737
Broadcasting now · callsign WJA2201 · 38,000 ft
Flights observed
148
Distinct callsigns
20
Country
CA
Last broadcast
13m ago

Current position

C03BF5 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C03BF5 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
WJA184 WestJet 5 2026-06-05
WJA525 WestJet 4 2026-06-05
WJA276 WestJet 4 2026-05-13
WJA188 WestJet 4 2026-06-05
WJA601 WestJet 3 2026-05-24
WJA600 WestJet 3 2026-05-24
WJA491 WestJet 3 2026-05-18
WJA473 WestJet 3 2026-04-23
WJA312 WestJet 3 2026-05-08
WJA309 WestJet 3 2026-05-08
WJA269 WestJet 3 2026-05-12
WJA185 WestJet 3 2026-06-05
WJA171 WestJet 3 2026-06-03
WJA813 WestJet 2 2026-05-19
WJA809 WestJet 2 2026-04-30
WJA806 WestJet 2 2026-04-29
WJA773 WestJet 2 2026-05-28
WJA690 WestJet 2 2026-05-12
WJA674 WestJet 2 2026-05-14
WJA669 WestJet 2 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-07 WJA2201 CUN → YYC Jun 7, 21:15 UTCJun 7, 23:15 UTC2h 0m
2026-06-07 WJA2200 YYC → MEX Jun 7, 14:35 UTCJun 7, 19:55 UTC5h 20m
2026-06-05 WJA1090 YYC → LAS Jun 5, 21:45 UTCJun 6, 03:45 UTC6h 0m
2026-06-05 WJA188 YLW → YYC Jun 5, 19:20 UTCJun 5, 20:00 UTC40m
2026-06-05 WJA188 YLW → YYC Jun 5, 19:19 UTCJun 6, 03:45 UTC8h 26m
2026-06-05 WJA185 YYC → YYJ Jun 5, 17:15 UTCJun 5, 18:00 UTC45m
2026-06-05 WJA184 YLW → YYC Jun 5, 15:00 UTCJun 5, 15:40 UTC40m
2026-06-05 WJA525 YYZ → YWG Jun 5, 12:50 UTCJun 5, 13:45 UTC55m
2026-06-04 WJA501 YEG → YYJ Jun 4, 12:21 UTCJun 5, 02:25 UTC14h 4m
2026-06-03 WJA171 YEG → YVR Jun 3, 19:05 UTCJun 3, 20:25 UTC1h 20m
2026-06-03 WJA171 YEG → YVR Jun 3, 19:03 UTCJun 4, 16:05 UTC21h 2m
2026-06-03 WJA170 YVR → YEG Jun 3, 16:25 UTCJun 3, 17:35 UTC1h 10m
2026-06-02 WJA171 YEG → YVR Jun 2, 18:55 UTCJun 2, 20:05 UTC1h 10m
2026-06-02 WJA170 YVR → YEG Jun 2, 16:20 UTCJun 2, 17:30 UTC1h 10m
2026-06-01 WJA1553 SEA → YYC Jun 1, 17:49 UTCJun 2, 17:15 UTC23h 27m
2026-06-01 WJA348 YYC → YXE Jun 1, 04:10 UTCJun 2, 00:45 UTC20h 35m
2026-05-31 WJA1022 YYZ → TPA May 31, 18:08 UTCJun 1, 16:10 UTC22h 3m
2026-05-31 WJA184 YLW → YYC May 31, 14:55 UTCMay 31, 15:15 UTC20m
2026-05-31 WJA184 YLW → YYC May 31, 14:53 UTCJun 1, 13:15 UTC22h 23m
2026-05-31 WJA525 YYZ → YWG May 31, 12:40 UTCMay 31, 13:35 UTC55m
2026-05-31 WJA525 YYZ → YWG May 31, 12:38 UTCJun 1, 05:05 UTC16h 28m
2026-05-30 WJA669 YYZ → YYC May 30, 11:15 UTCMay 30, 16:05 UTC4h 50m
2026-05-30 WJA669 YYZ → YYC May 30, 11:09 UTCMay 31, 01:11 UTC14h 3m
2026-05-30 WJA580 YEG → YHZ May 30, 05:10 UTCMay 30, 09:50 UTC4h 40m
2026-05-30 WJA314 YYC → YFC May 30, 01:20 UTCMay 30, 02:25 UTC1h 5m
2026-05-29 WJA123 YYC → YVR May 29, 22:30 UTCMay 29, 23:35 UTC1h 5m
2026-05-29 WJA188 YLW → YYC May 29, 19:15 UTCMay 29, 19:55 UTC40m
2026-05-29 WJA185 YYC → YYJ May 29, 17:15 UTCMay 29, 18:00 UTC45m
2026-05-29 WJA184 YLW → YYC May 29, 14:55 UTCMay 29, 15:45 UTC50m
2026-05-28 WJA773 YEG → YQQ May 28, 19:40 UTCMay 28, 21:00 UTC1h 20m
2026-05-28 WJA773 YEG → YQQ May 28, 19:37 UTCMay 29, 19:15 UTC23h 38m
2026-05-28 WJA526 YLW → YEG May 28, 16:10 UTCMay 28, 17:05 UTC55m
2026-05-27 WJA267 YWG → YYC May 27, 20:44 UTCMay 28, 17:05 UTC20h 21m
2026-05-27 WJA477 YYC → YXX May 27, 04:13 UTCMay 28, 00:20 UTC20h 7m
2026-05-26 WJA268 YYC → YWG May 26, 22:36 UTCMay 27, 21:15 UTC22h 39m
2026-05-26 WJA186 YYJ → YYC May 26, 17:49 UTCMay 27, 16:20 UTC22h 32m
2026-05-26 WJA143 YEG → YLW May 26, 13:15 UTCMay 26, 13:45 UTC30m
2026-05-26 WJA143 YEG → YLW May 26, 13:09 UTCMay 27, 05:19 UTC16h 11m
2026-05-25 WJA506 YYJ → YEG May 25, 22:00 UTCMay 25, 23:14 UTC1h 15m
2026-05-25 WJA1845 MSP → YXE May 25, 01:55 UTCMay 25, 23:14 UTC21h 20m
2026-05-24 WJA600 YYC → YXE May 24, 16:35 UTCMay 24, 18:10 UTC1h 35m
2026-05-24 WJA600 YYC → YXE May 24, 16:32 UTCMay 25, 14:10 UTC21h 38m
2026-05-24 WJA601 YXE → YYC May 24, 13:20 UTCMay 24, 15:15 UTC1h 55m
2026-05-23 WJA600 YYC → YXE May 23, 16:34 UTCMay 24, 15:15 UTC22h 41m
2026-05-23 WJA601 YXE → YYC May 23, 13:15 UTCMay 23, 15:10 UTC1h 55m
2026-05-23 WJA601 YXE → YYC May 23, 13:14 UTCMay 24, 05:30 UTC16h 17m
2026-05-22 WJA573 YWG → YEG May 22, 23:15 UTCMay 23, 02:25 UTC3h 10m
2026-05-22 WJA511 YYZ → YLW May 22, 01:25 UTCMay 22, 02:40 UTC1h 15m
2026-05-22 WJA511 YYZ → YLW May 22, 01:22 UTCMay 23, 01:15 UTC23h 54m
2026-05-21 WJA502 YYJ → YEG May 21, 17:20 UTCMay 21, 18:40 UTC1h 20m

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

Mode-S C03BF5 frequently asked

What is Mode-S code C03BF5?
C03BF5 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FWSI.
Where is Mode-S C03BF5 registered?
Mode-S code C03BF5 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03BF5 broadcasting right now?
Yes. Mode-S C03BF5 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C03BF5, octal 60035765, decimal 12,598,261.
What flights does C03BF5 operate?
Mode-S C03BF5 has broadcast 20 distinct callsigns, including WJA184, WJA525, WJA276, WJA188, WJA601.