Apparatus

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sensors Mode-S transponder

C03BFB

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C03BFB
Octal
60035773
Decimal
12,598,267
Country
CA
Tail
C-FWSO
Type
B737
Broadcasting now · callsign WJA1992 · 37,000 ft
Flights observed
281
Distinct callsigns
20
Country
CA
Last broadcast
1d ago

Current position

C03BFB is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C03BFB 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
WJA1021 - 7 2026-07-07
WJA1540 - 5 2026-07-10
WJA641 WestJet 4 2026-05-27
WJA617 - 4 2026-07-03
WJA2379 WestJet 4 2026-04-18
WJA2378 - 4 2026-04-17
WJA179 WestJet 4 2026-06-07
WJA171 WestJet 4 2026-06-07
WJA1581 - 4 2026-06-29
WJA691 WestJet 3 2026-06-14
WJA610 WestJet 3 2026-04-16
WJA580 WestJet 3 2026-06-22
WJA501 WestJet 3 2026-05-21
WJA352 - 3 2026-07-11
WJA268 - 3 2026-07-06
WJA267 - 3 2026-07-06
WJA265 - 3 2026-06-29
WJA2240 WestJet 3 2026-06-17
WJA178 WestJet 3 2026-06-06
WJA1580 - 3 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 WJA1571 DEN → YYC Jul 12, 18:50 UTCJul 12, 21:00 UTC2h 11m
2026-07-12 WJA351 YXE → YYC Jul 12, 01:10 UTCJul 12, 02:05 UTC55m
2026-07-12 WJA351 YXE → YYC Jul 12, 01:07 UTCJul 12, 21:00 UTC19h 54m
2026-07-11 WJA352 YYC → YXE Jul 11, 23:25 UTCJul 12, 00:10 UTC45m
2026-07-11 WJA1593 ATL → YYC Jul 11, 14:10 UTCJul 11, 18:25 UTC4h 15m
2026-07-11 WJA1992 YYC → ATL Jul 11, 08:20 UTCJul 11, 12:20 UTC4h 0m
2026-07-10 WJA1543 - Jul 10, 23:55 UTCJul 11, 03:35 UTC3h 40m
2026-07-10 WJA1540 - Jul 10, 21:45 UTCJul 10, 22:25 UTC40m
2026-07-10 WJA1540 YYC → AUS Jul 10, 15:00 UTCJul 10, 19:10 UTC4h 10m
2026-07-10 WJA2229 - Jul 10, 07:40 UTCJul 10, 12:40 UTC5h 0m
2026-07-10 WJA2228 YYC → MEX Jul 10, 01:40 UTCJul 10, 06:20 UTC4h 40m
2026-07-09 WJA476 - Jul 9, 23:15 UTCJul 10, 00:10 UTC55m
2026-07-09 WJA475 - Jul 9, 20:25 UTCJul 9, 21:35 UTC1h 10m
2026-07-09 WJA266 - Jul 9, 17:50 UTCJul 9, 18:50 UTC1h 0m
2026-07-08 WJA125 YYC → YVR Jul 8, 23:10 UTCJul 9, 00:20 UTC1h 10m
2026-07-08 WJA125 YYC → YVR Jul 8, 23:09 UTCJul 9, 21:35 UTC22h 26m
2026-07-08 WJA737 - Jul 8, 00:35 UTCJul 8, 04:30 UTC3h 55m
2026-07-07 WJA734 - Jul 7, 20:30 UTCJul 7, 23:35 UTC3h 5m
2026-07-07 WJA1021 - Jul 7, 14:50 UTCJul 7, 17:15 UTC2h 25m
2026-07-07 WJA1026 - Jul 7, 01:50 UTCJul 7, 04:45 UTC2h 55m
2026-07-06 WJA268 - Jul 6, 22:40 UTCJul 6, 23:45 UTC1h 5m
2026-07-06 WJA267 - Jul 6, 20:20 UTCJul 6, 21:30 UTC1h 10m
2026-07-06 WJA225 YWG → YYC Jul 6, 15:45 UTCJul 6, 17:35 UTC1h 50m
2026-07-06 WJA482 YEG → YWG Jul 6, 13:10 UTCJul 6, 14:40 UTC1h 30m
2026-07-06 WJA152 YYC → YEG Jul 6, 04:20 UTCJul 6, 04:50 UTC30m
2026-07-05 WJA1621 - Jul 5, 23:25 UTCJul 6, 02:55 UTC3h 30m
2026-07-05 WJA1050 - Jul 5, 19:30 UTCJul 5, 22:10 UTC2h 40m
2026-07-05 WJA802 - Jul 5, 15:15 UTCJul 5, 16:55 UTC1h 40m
2026-07-04 WJA1051 DTW → YHZ Jul 4, 21:39 UTCJul 5, 20:45 UTC23h 6m
2026-07-04 WJA1620 YYC → DTW Jul 4, 17:14 UTCJul 5, 16:45 UTC23h 32m
2026-07-04 WJA1504 YYC → SFO Jul 4, 02:58 UTCJul 4, 23:45 UTC20h 47m
2026-07-04 WJA1504 YYC → SFO Jul 4, 03:00 UTCJul 4, 05:15 UTC2h 15m
2026-07-03 WJA617 - Jul 3, 20:30 UTCJul 4, 00:30 UTC4h 0m
2026-07-03 WJA616 - Jul 3, 15:50 UTCJul 3, 19:10 UTC3h 20m
2026-07-03 WJA4037 YYC → YYC Jul 3, 00:45 UTCJul 3, 03:40 UTC2h 55m
2026-07-02 WJA151 - Jul 2, 23:05 UTCJul 2, 23:35 UTC30m
2026-07-02 WJA148 YYC → YEG Jul 2, 21:00 UTCJul 2, 21:30 UTC30m
2026-07-02 WJA518 - Jul 2, 18:05 UTCJul 2, 19:15 UTC1h 10m
2026-07-02 WJA515 - Jul 2, 15:35 UTCJul 2, 16:45 UTC1h 10m
2026-07-02 WJA262 SSW → YYC Jul 2, 13:00 UTCJul 2, 14:05 UTC1h 5m
2026-07-02 WJA273 - Jul 2, 05:05 UTCJul 2, 06:00 UTC55m
2026-07-01 WJA1485 - Jul 1, 22:30 UTCJul 2, 01:20 UTC2h 50m
2026-07-01 WJA1484 - Jul 1, 17:55 UTCJul 1, 20:50 UTC2h 55m
2026-07-01 WJA1541 - Jul 1, 11:45 UTCJul 1, 15:20 UTC3h 35m
2026-06-30 WJA1542 - Jun 30, 23:40 UTCJul 1, 03:45 UTC4h 5m
2026-06-30 WJA4020 YYC → YYC Jun 30, 12:15 UTCJun 30, 15:25 UTC3h 10m
2026-06-30 WJA192 - Jun 30, 01:35 UTCJun 30, 02:20 UTC45m
2026-06-29 WJA189 YYC → YLW Jun 29, 23:09 UTCJun 30, 00:00 UTC50m
2026-06-29 WJA272 - Jun 29, 20:09 UTCJun 29, 21:14 UTC1h 5m
2026-06-29 WJA265 - Jun 29, 17:49 UTCJun 29, 18:55 UTC1h 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-FWSO page for operator, model, and routing details .

Mode-S C03BFB frequently asked

What is Mode-S code C03BFB?
C03BFB is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FWSO.
Where is Mode-S C03BFB registered?
Mode-S code C03BFB is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03BFB broadcasting right now?
Yes. Mode-S C03BFB is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C03BFB, octal 60035773, decimal 12,598,267.
What flights does C03BFB operate?
Mode-S C03BFB has broadcast 20 distinct callsigns, including WJA1021, WJA1540, WJA641, WJA617, WJA2379.