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sensors Mode-S transponder

C03A5A

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C03A5A
Octal
60035132
Decimal
12,597,850
Country
CA
Tail
C-FWCN
Type
B737
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
340
Distinct callsigns
20
Country
CA
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S C03A5A.

Country allocation

The ICAO 24-bit address C03A5A 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
WJA2228 - 6 2026-07-02
WJA746 - 5 2026-07-17
WJA674 WestJet 5 2026-05-05
WJA515 - 5 2026-07-16
WJA485 WestJet 5 2026-06-12
WJA484 WestJet 5 2026-06-12
WJA1543 WestJet 5 2026-07-22
WJA1024 WestJet 5 2026-07-24
WJA1021 WestJet 5 2026-07-23
WJA749 - 4 2026-07-17
WJA647 WestJet 4 2026-04-15
WJA632 WestJet 4 2026-05-21
WJA617 - 4 2026-07-13
WJA554 - 4 2026-07-12
WJA518 - 4 2026-07-16
WJA488 WestJet 4 2026-07-20
WJA473 WestJet 4 2026-05-28
WJA349 - 4 2026-07-09
WJA182 - 4 2026-07-05
WJA1625 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 WJA487 YYC → YLW Jul 26, 21:20 UTCJul 26, 22:30 UTC1h 10m
2026-07-26 WJA796 YYJ → YWG Jul 26, 16:20 UTCJul 26, 18:30 UTC2h 10m
2026-07-26 WJA797 YYZ → YYJ Jul 26, 12:10 UTCJul 26, 15:15 UTC3h 5m
2026-07-26 WJA234 YYC → YHZ Jul 26, 04:20 UTCJul 26, 05:50 UTC1h 30m
2026-07-25 WJA1611 MSP → YYC Jul 25, 22:50 UTCJul 26, 02:05 UTC3h 15m
2026-07-25 WJA1610 YYC → MSP Jul 25, 18:30 UTCJul 25, 21:05 UTC2h 35m
2026-07-25 WJA1593 ATL → YYC Jul 25, 12:35 UTCJul 25, 17:00 UTC4h 25m
2026-07-25 WJA1992 YYC → ATL Jul 25, 06:40 UTCJul 25, 10:05 UTC3h 25m
2026-07-25 WJA1027 LAX → YYC Jul 25, 01:25 UTCJul 25, 03:45 UTC2h 20m
2026-07-24 WJA1024 YYC → LAX Jul 24, 21:10 UTCJul 25, 00:10 UTC3h 0m
2026-07-24 WJA227 - Jul 24, 17:05 UTCJul 24, 19:00 UTC1h 55m
2026-07-24 WJA222 YYC → YWG Jul 24, 14:25 UTCJul 24, 15:55 UTC1h 30m
2026-07-24 WJA585 YHM → YYC Jul 24, 00:45 UTCJul 24, 04:45 UTC4h 0m
2026-07-23 WJA582 YYC → YKF Jul 23, 20:20 UTCJul 23, 23:20 UTC3h 0m
2026-07-23 WJA1021 LAX → YYC Jul 23, 14:45 UTCJul 23, 17:15 UTC2h 30m
2026-07-23 WJA1026 YYC → LAX Jul 23, 02:00 UTCJul 23, 04:55 UTC2h 55m
2026-07-22 WJA1543 IAH → YYC Jul 22, 20:20 UTCJul 23, 00:05 UTC3h 45m
2026-07-22 WJA1540 - Jul 22, 15:10 UTCJul 22, 18:45 UTC3h 35m
2026-07-22 WJA1093 - Jul 22, 02:40 UTCJul 22, 04:55 UTC2h 15m
2026-07-21 WJA1090 YYC → LAS Jul 21, 21:35 UTCJul 22, 00:00 UTC2h 25m
2026-07-20 WJA231 - Jul 20, 22:15 UTCJul 20, 22:30 UTC15m
2026-07-20 WJA488 YEG → YWG Jul 20, 19:30 UTCJul 20, 21:05 UTC1h 35m
2026-07-20 WJA488 YEG → YWG Jul 20, 19:25 UTCJul 21, 00:15 UTC4h 50m
2026-07-20 WJA144 - Jul 20, 15:45 UTCJul 20, 16:10 UTC25m
2026-07-20 WJA143 YEG → YLW Jul 20, 13:00 UTCJul 20, 13:35 UTC35m
2026-07-20 WJA154 YYJ → YYC Jul 20, 06:05 UTCJul 20, 06:30 UTC25m
2026-07-20 WJA1555 SEA → YYC Jul 20, 03:35 UTCJul 20, 04:35 UTC1h 0m
2026-07-20 WJA1552 YYC → SEA Jul 20, 00:20 UTCJul 20, 01:50 UTC1h 30m
2026-07-19 WJA1021 LAX → YYC Jul 19, 14:40 UTCJul 19, 17:10 UTC2h 30m
2026-07-19 WJA1026 YYC → LAX Jul 19, 02:00 UTCJul 19, 05:00 UTC3h 0m
2026-07-18 WJA1543 - Jul 18, 20:05 UTCJul 18, 23:45 UTC3h 40m
2026-07-18 WJA1540 - Jul 18, 15:05 UTCJul 18, 18:40 UTC3h 35m
2026-07-17 WJA749 - Jul 17, 22:00 UTCJul 18, 01:45 UTC3h 45m
2026-07-17 WJA746 - Jul 17, 17:15 UTCJul 17, 20:15 UTC3h 0m
2026-07-16 WJA518 - Jul 16, 17:49 UTCJul 16, 18:29 UTC40m
2026-07-16 WJA518 YQQ → YYC Jul 16, 17:49 UTCJul 17, 04:25 UTC10h 36m
2026-07-16 WJA515 - Jul 16, 15:19 UTCJul 16, 16:35 UTC1h 15m
2026-07-15 WJA1485 - Jul 15, 22:35 UTCJul 16, 01:10 UTC2h 35m
2026-07-15 WJA1484 YYC → SAN Jul 15, 18:00 UTCJul 15, 21:00 UTC3h 0m
2026-07-14 WJA1485 - Jul 14, 22:35 UTCJul 15, 01:10 UTC2h 34m
2026-07-14 WJA1484 YYC → SAN Jul 14, 17:55 UTCJul 14, 21:00 UTC3h 5m
2026-07-13 WJA617 - Jul 13, 20:25 UTCJul 14, 00:35 UTC4h 10m
2026-07-13 WJA616 - Jul 13, 15:45 UTCJul 13, 19:05 UTC3h 20m
2026-07-12 WJA555 YSB → YYC Jul 12, 20:01 UTCJul 12, 23:40 UTC3h 40m
2026-07-12 WJA554 - Jul 12, 18:35 UTCJul 12, 18:50 UTC15m
2026-07-11 WJA1625 BOS → YYC Jul 11, 22:50 UTCJul 12, 03:40 UTC4h 50m
2026-07-11 WJA1625 BOS → YYC Jul 11, 22:48 UTCJul 12, 22:30 UTC23h 43m
2026-07-11 1624 YYC → BOS Jul 11, 17:10 UTCJul 11, 21:20 UTC4h 10m
2026-07-11 WJA155 - Jul 11, 01:40 UTCJul 11, 02:15 UTC35m
2026-07-10 WJA156 YYC → YEG Jul 10, 23:45 UTCJul 11, 00:15 UTC30m

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

Mode-S C03A5A frequently asked

What is Mode-S code C03A5A?
C03A5A is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FWCN.
Where is Mode-S C03A5A registered?
Mode-S code C03A5A is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03A5A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C03A5A, octal 60035132, decimal 12,597,850.
What flights does C03A5A operate?
Mode-S C03A5A has broadcast 20 distinct callsigns, including WJA2228, WJA746, WJA674, WJA515, WJA485.