Apparatus

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sensors Mode-S transponder

C03C05

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C03C05
Octal
60036005
Decimal
12,598,277
Country
CA
Tail
C-FWSY
Type
B737
No current signal · last broadcast 3h ago
Flights observed
144
Distinct callsigns
20
Country
CA
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S C03C05.

Country allocation

The ICAO 24-bit address C03C05 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
WJA641 WestJet 4 2026-05-08
WJA831 - 3 2026-04-15
WJA830 - 3 2026-04-14
WJA626 WestJet 3 2026-05-08
WJA615 WestJet 3 2026-05-22
WJA264 WestJet 3 2026-05-17
WJA2587 WestJet 3 2026-04-16
WJA223 WestJet 3 2026-04-27
WJA2046 - 3 2026-04-15
WJA1541 WestJet 3 2026-05-25
WJA526 WestJet 2 2026-05-15
WJA517 WestJet 2 2026-04-21
WJA501 WestJet 2 2026-05-17
WJA4038 WestJet 2 2026-05-28
WJA290 WestJet 2 2026-04-23
WJA282 WestJet 2 2026-05-06
WJA277 WestJet 2 2026-04-22
WJA276 WestJet 2 2026-05-23
WJA269 WestJet 2 2026-05-22
WJA268 WestJet 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 WJA1625 BOS → YYC May 29, 22:40 UTCMay 30, 03:30 UTC4h 50m
2026-05-29 WJA1624 YYC → LAS May 29, 17:00 UTCMay 29, 21:15 UTC4h 15m
2026-05-28 WJA552 YVR → YLW May 28, 19:58 UTCMay 29, 19:15 UTC23h 17m
2026-05-28 WJA4021 YFI → YYC May 28, 14:45 UTCMay 29, 13:15 UTC22h 30m
2026-05-28 WJA4038 YYC → YFI May 28, 00:10 UTCMay 28, 03:15 UTC3h 5m
2026-05-28 WJA4038 YYC → YFI May 28, 00:10 UTCMay 28, 21:15 UTC21h 5m
2026-05-27 WJA1811 LAS → YLW May 27, 20:20 UTCMay 27, 22:45 UTC2h 25m
2026-05-27 WJA1810 YYC → MSP May 27, 16:40 UTCMay 27, 18:55 UTC2h 15m
2026-05-25 WJA115 YYC → YVR May 25, 18:15 UTCMay 25, 19:15 UTC1h 0m
2026-05-25 WJA115 YYC → YVR May 25, 18:15 UTCMay 25, 22:05 UTC3h 50m
2026-05-25 WJA1541 IAH → YYC May 25, 11:45 UTCMay 25, 15:25 UTC3h 40m
2026-05-24 WJA265 YYT → YYC May 24, 17:57 UTCMay 25, 15:25 UTC21h 29m
2026-05-24 WJA1501 LAS → YYC May 24, 13:31 UTCMay 25, 13:15 UTC23h 44m
2026-05-23 WJA268 YYC → YWG May 23, 22:45 UTCMay 23, 23:45 UTC1h 0m
2026-05-23 WJA268 YYC → YWG May 23, 22:43 UTCMay 24, 21:15 UTC22h 32m
2026-05-23 WJA267 YWG → YYC May 23, 20:25 UTCMay 23, 21:40 UTC1h 15m
2026-05-23 WJA347 YXE → YYC May 23, 17:30 UTCMay 23, 18:20 UTC50m
2026-05-23 WJA342 YYC → YXE May 23, 15:25 UTCMay 23, 16:20 UTC55m
2026-05-23 WJA276 YXS → YYC May 23, 01:30 UTCMay 23, 02:35 UTC1h 5m
2026-05-22 WJA269 YWG → YYC May 22, 23:15 UTCMay 23, 00:25 UTC1h 10m
2026-05-22 WJA615 YOW → YVR May 22, 17:45 UTCMay 22, 22:00 UTC4h 15m
2026-05-21 WJA123 YYC → YVR May 21, 22:55 UTCMay 22, 21:15 UTC22h 21m
2026-05-21 WJA276 YXS → YYC May 21, 01:21 UTCMay 22, 01:15 UTC23h 55m
2026-05-20 WJA269 YWG → YYC May 20, 22:55 UTCMay 20, 23:15 UTC20m
2026-05-20 WJA615 YOW → YVR May 20, 17:15 UTCMay 20, 21:25 UTC4h 10m
2026-05-20 WJA615 YOW → YVR May 20, 17:13 UTCMay 21, 14:10 UTC20h 58m
2026-05-19 WJA506 YYJ → YEG May 19, 21:54 UTCMay 20, 21:15 UTC23h 22m
2026-05-19 WJA144 YYC → YEG May 19, 15:35 UTCMay 19, 16:10 UTC35m
2026-05-19 WJA144 YYC → YEG May 19, 15:34 UTCMay 20, 15:15 UTC23h 42m
2026-05-19 WJA345 YEG → YQQ May 19, 13:05 UTCMay 19, 14:00 UTC55m
2026-05-19 WJA873 YHZ → YXE May 19, 00:45 UTCMay 19, 05:40 UTC4h 55m
2026-05-18 WJA872 YXE → YHZ May 18, 19:35 UTCMay 18, 23:15 UTC3h 40m
2026-05-18 WJA600 YYC → YXE May 18, 16:30 UTCMay 18, 18:10 UTC1h 40m
2026-05-18 WJA601 YXE → YYC May 18, 13:15 UTCMay 18, 14:55 UTC1h 40m
2026-05-17 WJA264 YYC → YYT May 17, 14:50 UTCMay 17, 15:15 UTC25m
2026-05-17 WJA264 YYC → YYT May 17, 14:50 UTCMay 18, 13:15 UTC22h 26m
2026-05-17 WJA501 YEG → YYJ May 17, 12:15 UTCMay 17, 13:31 UTC1h 15m
2026-05-17 WJA501 YEG → YYJ May 17, 12:11 UTCMay 18, 06:55 UTC18h 45m
2026-05-16 WJA772 YQQ → YEG May 16, 22:20 UTCMay 16, 23:30 UTC1h 10m
2026-05-16 WJA773 YEG → YQQ May 16, 19:50 UTCMay 16, 21:10 UTC1h 20m
2026-05-15 WJA1475 PSP → YYC May 15, 23:34 UTCMay 16, 23:15 UTC23h 42m
2026-05-15 WJA1474 YYC → PSP May 15, 19:42 UTCMay 16, 18:25 UTC22h 44m
2026-05-15 WJA526 YLW → YEG May 15, 16:50 UTCMay 15, 17:40 UTC50m
2026-05-15 WJA526 YLW → YEG May 15, 16:47 UTCMay 16, 14:35 UTC21h 49m
2026-05-15 WJA181 YYC → YLW May 15, 14:35 UTCMay 15, 15:20 UTC44m
2026-05-14 WJA1591 ATL → YYC May 14, 18:40 UTCMay 14, 23:05 UTC4h 25m
2026-05-14 WJA1591 ATL → YYC May 14, 18:40 UTCMay 15, 17:15 UTC22h 35m
2026-05-13 WJA1485 PSP → YEG May 13, 22:29 UTCMay 14, 21:15 UTC22h 47m
2026-05-13 WJA264 YYC → YYT May 13, 14:51 UTCMay 14, 13:15 UTC22h 25m
2026-05-13 WJA314 YYC → YFC May 13, 01:15 UTCMay 13, 23:15 UTC22h 1m

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

Mode-S C03C05 frequently asked

What is Mode-S code C03C05?
C03C05 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FWSY.
Where is Mode-S C03C05 registered?
Mode-S code C03C05 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03C05 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 C03C05, octal 60036005, decimal 12,598,277.
What flights does C03C05 operate?
Mode-S C03C05 has broadcast 20 distinct callsigns, including WJA641, WJA831, WJA830, WJA626, WJA615.