Apparatus

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sensors Mode-S transponder

C03BF1

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C03BF1
Octal
60035761
Decimal
12,598,257
Country
CA
Tail
C-FWSE
Type
B738
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
291
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S C03BF1.

Country allocation

The ICAO 24-bit address C03BF1 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
WJA104 WestJet 8 2026-07-05
WJA1034 WestJet 7 2026-07-19
WJA573 WestJet 6 2026-07-17
WJA321 WestJet 6 2026-07-25
WJA146 - 6 2026-07-01
WJA659 - 5 2026-06-21
WJA444 WestJet 5 2026-07-23
WJA632 - 4 2026-07-19
WJA463 WestJet 4 2026-07-24
WJA190 WestJet 4 2026-06-18
WJA183 - 4 2026-07-16
WJA111 - 4 2026-06-11
WJA1035 WestJet 4 2026-04-17
WJA100 WestJet 4 2026-07-25
WJA789 - 3 2026-07-18
WJA748 WestJet 3 2026-05-18
WJA567 WestJet 3 2026-06-16
WJA519 - 3 2026-06-16
WJA502 - 3 2026-07-08
WJA2134 WestJet 3 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WJA1626 YYC → BOS Jul 26, 21:50 UTCJul 26, 22:15 UTC25m
2026-07-26 WJA296 - Jul 26, 15:35 UTCJul 26, 16:35 UTC1h 0m
2026-07-26 WJA295 - Jul 26, 13:10 UTCJul 26, 14:25 UTC1h 15m
2026-07-25 WJA100 YVR → YYC Jul 25, 12:09 UTCJul 26, 05:35 UTC17h 26m
2026-07-25 WJA321 YQR → YEG Jul 25, 03:49 UTCJul 26, 01:40 UTC21h 51m
2026-07-24 WJA463 YYC → YYJ Jul 24, 21:30 UTCJul 25, 01:25 UTC3h 55m
2026-07-24 WJA463 YYC → YYJ Jul 24, 21:28 UTCJul 25, 20:15 UTC22h 47m
2026-07-24 WJA2581 CUN → YYZ Jul 24, 16:35 UTCJul 24, 19:15 UTC2h 40m
2026-07-24 WJA2580 YYZ → CUN Jul 24, 11:55 UTCJul 24, 14:25 UTC2h 30m
2026-07-23 WJA444 YEG → YYZ Jul 23, 15:45 UTCJul 23, 18:45 UTC3h 0m
2026-07-22 WJA114 YVR → YYC Jul 22, 20:10 UTCJul 22, 21:10 UTC1h 0m
2026-07-22 WJA114 YVR → YYC Jul 22, 20:08 UTCJul 23, 18:15 UTC22h 7m
2026-07-22 WJA113 YYC → YVR Jul 22, 17:55 UTCJul 22, 19:05 UTC1h 10m
2026-07-22 WJA102 YVR → YYC Jul 22, 14:10 UTCJul 22, 15:10 UTC1h 0m
2026-07-22 WJA319 YOW → YEG Jul 22, 00:35 UTCJul 22, 01:50 UTC1h 15m
2026-07-21 WJA310 YQQ → YYC Jul 21, 21:40 UTCJul 21, 22:45 UTC1h 5m
2026-07-21 WJA127 YYC → YVR Jul 21, 00:25 UTCJul 21, 01:35 UTC1h 10m
2026-07-20 WJA118 YVR → YYC Jul 20, 21:55 UTCJul 20, 22:55 UTC1h 0m
2026-07-20 WJA117 YYC → YVR Jul 20, 19:10 UTCJul 20, 20:20 UTC1h 10m
2026-07-20 WJA633 YYZ → YYC Jul 20, 13:20 UTCJul 20, 17:25 UTC4h 5m
2026-07-20 WJA1039 MCO → YYZ Jul 20, 01:30 UTCJul 20, 03:55 UTC2h 25m
2026-07-19 WJA1034 YYZ → MCO Jul 19, 21:40 UTCJul 19, 23:55 UTC2h 15m
2026-07-19 WJA632 - Jul 19, 15:55 UTCJul 19, 19:05 UTC3h 10m
2026-07-18 WJA789 - Jul 18, 21:10 UTCJul 19, 02:15 UTC5h 5m
2026-07-18 WJA789 YYG → YYC Jul 18, 21:06 UTCJul 19, 19:25 UTC22h 20m
2026-07-18 WJA788 - Jul 18, 15:50 UTCJul 18, 19:55 UTC4h 5m
2026-07-17 WJA573 YWG → YEG Jul 17, 22:57 UTCJul 18, 22:15 UTC23h 19m
2026-07-17 WJA802 - Jul 17, 15:05 UTCJul 17, 16:44 UTC1h 40m
2026-07-17 WJA802 YYZ → YHZ Jul 17, 15:02 UTCJul 18, 13:30 UTC22h 29m
2026-07-17 WJA652 YYC → YYZ Jul 17, 01:59 UTCJul 17, 05:04 UTC3h 5m
2026-07-16 WJA268 - Jul 16, 22:40 UTCJul 16, 23:44 UTC1h 5m
2026-07-16 WJA267 - Jul 16, 20:09 UTCJul 16, 21:19 UTC1h 10m
2026-07-16 WJA186 - Jul 16, 18:00 UTCJul 16, 18:40 UTC40m
2026-07-16 WJA183 - Jul 16, 15:45 UTCJul 16, 16:30 UTC45m
2026-07-16 WJA100 YVR → YYC Jul 16, 12:00 UTCJul 16, 13:00 UTC1h 0m
2026-07-16 WJA729 YYZ → YVR Jul 16, 00:35 UTCJul 16, 05:30 UTC4h 55m
2026-07-15 WJA632 YYC → YYZ Jul 15, 16:35 UTCJul 15, 19:55 UTC3h 20m
2026-07-15 WJA569 YUL → YYC Jul 15, 01:20 UTCJul 15, 05:45 UTC4h 25m
2026-07-14 WJA2908 YUL → YUL Jul 14, 13:30 UTCJul 14, 22:55 UTC9h 24m
2026-07-13 WJA2915 YUL → YUL Jul 13, 13:25 UTCJul 13, 23:00 UTC9h 35m
2026-07-13 WJA568 YYC → YUL Jul 13, 07:15 UTCJul 13, 11:05 UTC3h 50m
2026-07-13 WJA235 YWG → YYC Jul 13, 02:15 UTCJul 13, 04:20 UTC2h 5m
2026-07-12 WJA232 YYC → YWG Jul 12, 23:45 UTCJul 13, 01:15 UTC1h 30m
2026-07-12 WJA229 YWG → YYC Jul 12, 20:05 UTCJul 12, 22:00 UTC1h 55m
2026-07-12 WJA226 YYC → YWG Jul 12, 17:25 UTCJul 12, 18:55 UTC1h 30m
2026-07-11 WJA1025 - Jul 11, 22:25 UTCJul 12, 00:45 UTC2h 20m
2026-07-11 WJA736 - Jul 11, 05:55 UTCJul 11, 06:15 UTC20m
2026-07-11 WJA736 YVR → YYZ Jul 11, 05:55 UTCJul 12, 00:55 UTC19h 1m
2026-07-11 WJA129 YYC → YVR Jul 11, 03:05 UTCJul 11, 04:15 UTC1h 10m
2026-07-11 WJA122 YVR → YYC Jul 11, 00:25 UTCJul 11, 01:20 UTC55m

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

Mode-S C03BF1 frequently asked

What is Mode-S code C03BF1?
C03BF1 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FWSE.
Where is Mode-S C03BF1 registered?
Mode-S code C03BF1 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03BF1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C03BF1, octal 60035761, decimal 12,598,257.
What flights does C03BF1 operate?
Mode-S C03BF1 has broadcast 20 distinct callsigns, including WJA104, WJA1034, WJA573, WJA321, WJA146.