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
No current signal · last broadcast 3h ago
Flights observed
153
Distinct callsigns
20
Country
CA
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S C03BFB.

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 WestJet 6 2026-05-07
WJA641 WestJet 4 2026-05-27
WJA2379 WestJet 4 2026-04-18
WJA2378 - 4 2026-04-17
WJA617 WestJet 3 2026-04-17
WJA610 WestJet 3 2026-04-16
WJA501 WestJet 3 2026-05-21
WJA1581 WestJet 3 2026-05-25
WJA1540 WestJet 3 2026-05-06
WJA107 WestJet 3 2026-05-25
WJA1024 - 3 2026-04-13
WJA812 WestJet 2 2026-05-29
WJA719 WestJet 2 2026-05-15
WJA660 WestJet 2 2026-05-11
WJA613 WestJet 2 2026-05-02
WJA585 WestJet 2 2026-04-30
WJA519 WestJet 2 2026-04-22
WJA483 WestJet 2 2026-05-08
WJA472 WestJet 2 2026-04-15
WJA380 WestJet 2 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 WJA812 YYC → YQM May 29, 15:51 UTCMay 30, 02:15 UTC10h 25m
2026-05-28 WJA352 YYC → YXE May 28, 23:35 UTCMay 29, 00:20 UTC45m
2026-05-28 WJA352 YYC → YXE May 28, 23:32 UTCMay 29, 22:25 UTC22h 54m
2026-05-28 WJA1552 YYC → SEA May 28, 00:24 UTCMay 28, 16:20 UTC15h 56m
2026-05-27 WJA641 YYZ → YYC May 27, 18:05 UTCMay 27, 21:55 UTC3h 50m
2026-05-27 WJA641 YYZ → YYC May 27, 18:01 UTCMay 28, 16:20 UTC22h 19m
2026-05-27 WJA626 YYZ → YYT May 27, 12:10 UTCMay 27, 15:35 UTC3h 25m
2026-05-26 WJA240 YEG → YYC May 26, 01:16 UTCMay 26, 21:59 UTC20h 44m
2026-05-25 WJA110 YVR → YYC May 25, 18:10 UTCMay 26, 16:10 UTC22h 0m
2026-05-25 WJA107 YYC → YVR May 25, 14:30 UTCMay 25, 15:45 UTC1h 15m
2026-05-25 WJA107 YYC → YVR May 25, 14:30 UTCMay 26, 12:45 UTC22h 15m
2026-05-25 WJA1581 SNA → YYC May 25, 02:20 UTCMay 25, 03:40 UTC1h 20m
2026-05-24 WJA1580 YYC → SNA May 24, 20:40 UTCMay 24, 23:30 UTC2h 50m
2026-05-24 WJA110 YVR → YYC May 24, 17:50 UTCMay 24, 18:55 UTC1h 5m
2026-05-24 WJA107 YYC → YVR May 24, 14:35 UTCMay 24, 15:50 UTC1h 15m
2026-05-23 WJA1625 BOS → YYC May 23, 22:45 UTCMay 24, 03:20 UTC4h 35m
2026-05-23 WJA1624 YYC → LAS May 23, 17:00 UTCMay 23, 21:10 UTC4h 11m
2026-05-22 WJA595 YHM → YYC May 22, 22:10 UTCMay 23, 20:45 UTC22h 36m
2026-05-22 WJA477 YYC → YXX May 22, 04:04 UTCMay 23, 02:05 UTC22h 2m
2026-05-21 WJA264 YYC → YYT May 21, 14:53 UTCMay 22, 14:10 UTC23h 17m
2026-05-21 WJA501 YEG → YYJ May 21, 12:30 UTCMay 21, 13:45 UTC1h 15m
2026-05-21 WJA501 YEG → YYJ May 21, 12:28 UTCMay 22, 05:15 UTC16h 48m
2026-05-21 WJA154 YYJ → YYC May 21, 06:05 UTCMay 21, 06:25 UTC20m
2026-05-21 WJA4038 YYC → YFI May 21, 00:10 UTCMay 21, 03:20 UTC3h 10m
2026-05-20 WJA641 YYZ → YYC May 20, 17:40 UTCMay 20, 21:30 UTC3h 50m
2026-05-20 WJA139 YYC → YVR May 20, 01:20 UTCMay 20, 02:30 UTC1h 10m
2026-05-20 WJA139 YYC → YVR May 20, 01:19 UTCMay 21, 00:45 UTC23h 27m
2026-05-19 WJA190 YLW → YEG May 19, 22:30 UTCMay 19, 23:15 UTC45m
2026-05-19 WJA187 YYC → YLW May 19, 20:20 UTCMay 19, 21:10 UTC50m
2026-05-19 WJA347 YXE → YYC May 19, 17:30 UTCMay 19, 18:25 UTC55m
2026-05-19 WJA342 YYC → YXE May 19, 15:35 UTCMay 19, 16:25 UTC50m
2026-05-18 WJA813 YQM → YYC May 18, 21:10 UTCMay 19, 02:10 UTC5h 0m
2026-05-18 WJA812 YYC → YQM May 18, 15:40 UTCMay 18, 19:30 UTC3h 49m
2026-05-17 WJA1593 ATL → YYC May 17, 13:15 UTCMay 17, 17:25 UTC4h 10m
2026-05-17 WJA1992 YYC → ATL May 17, 06:45 UTCMay 17, 11:01 UTC4h 15m
2026-05-16 WJA100 YVR → YYC May 16, 12:10 UTCMay 17, 10:45 UTC22h 36m
2026-05-15 WJA719 YYZ → YVR May 15, 21:15 UTCMay 16, 01:55 UTC4h 40m
2026-05-15 WJA719 YYZ → YVR May 15, 21:11 UTCMay 16, 20:00 UTC22h 50m
2026-05-15 WJA1141 TPA → YYZ May 15, 17:10 UTCMay 15, 19:45 UTC2h 35m
2026-05-15 WJA1140 YYZ → TPA May 15, 13:30 UTCMay 15, 16:10 UTC2h 39m
2026-05-14 WJA2513 BGI → YYZ May 14, 19:38 UTCMay 15, 18:45 UTC23h 7m
2026-05-14 WJA2512 YYZ → BGI May 14, 12:53 UTCMay 15, 12:25 UTC23h 33m
2026-05-14 WJA2512 YYZ → BGI May 14, 12:55 UTCMay 14, 17:25 UTC4h 30m
2026-05-12 WJA589 YUL → YVR May 12, 22:30 UTCMay 12, 23:30 UTC1h 1m
2026-05-12 WJA588 YYZ → YOW May 12, 20:37 UTCMay 12, 23:30 UTC2h 54m
2026-05-12 WJA380 YXX → YYC May 12, 11:25 UTCMay 12, 13:20 UTC1h 55m
2026-05-12 WJA380 YXX → YYC May 12, 11:21 UTCMay 12, 23:30 UTC12h 10m
2026-05-11 WJA2566 YYZ → MBJ May 11, 12:49 UTCMay 12, 12:45 UTC23h 57m
2026-05-11 WJA660 YYC → YYZ May 11, 06:05 UTCMay 11, 09:25 UTC3h 20m
2026-05-11 WJA660 YYC → YYZ May 11, 06:04 UTCMay 12, 04:45 UTC22h 42m

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?
No active broadcast right now. Last signal was 3h ago.
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, WJA641, WJA2379, WJA2378, WJA617.