Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

C03F37

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FXYK · BOEING 737 MAX 8 · operated by Westjet

Hex
C03F37
Octal
60037467
Decimal
12,599,095
Country
CA
Tail
C-FXYK
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
136
Distinct callsigns
20
Country
CA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C03F37.

Country allocation

The ICAO 24-bit address C03F37 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
WJA755 WestJet 4 2026-05-27
WJA47 WestJet 4 2026-05-19
WJA383 WestJet 4 2026-05-27
WJA2513 WestJet 4 2026-05-21
WJA2512 WestJet 4 2026-05-24
WJA2128 WestJet 4 2026-05-15
WJA754 WestJet 3 2026-05-27
WJA433 - 3 2026-04-14
WJA2776 WestJet 3 2026-05-23
WJA2605 WestJet 3 2026-04-18
WJA2412 WestJet 3 2026-04-17
WJA1032 WestJet 3 2026-05-07
WJA893 WestJet 2 2026-05-05
WJA655 WestJet 2 2026-05-14
WJA637 WestJet 2 2026-05-22
WJA509 WestJet 2 2026-04-18
WJA46 WestJet 2 2026-05-19
WJA430 - 2 2026-04-14
WJA386 WestJet 2 2026-05-07
WJA33 WestJet 2 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 WJA590 YWG → YHZ May 29, 21:15 UTCMay 29, 23:45 UTC2h 30m
2026-05-29 WJA234 YYC → YHZ May 29, 04:10 UTCMay 29, 05:45 UTC1h 35m
2026-05-29 WJA233 YHZ → YYC May 29, 00:20 UTCMay 29, 02:05 UTC1h 45m
2026-05-28 WJA591 - May 28, 19:30 UTCMay 28, 23:00 UTC3h 30m
2026-05-28 WJA41 LGW → YHZ May 28, 10:35 UTCMay 28, 16:35 UTC6h 0m
2026-05-27 WJA383 YYZ → YWG May 27, 17:03 UTCMay 28, 11:55 UTC18h 52m
2026-05-27 WJA383 YYZ → YWG May 27, 17:05 UTCMay 27, 19:20 UTC2h 15m
2026-05-27 WJA754 YQR → YYZ May 27, 12:15 UTCMay 27, 14:35 UTC2h 20m
2026-05-27 WJA755 YYZ → YQR May 27, 03:29 UTCMay 27, 06:09 UTC2h 40m
2026-05-26 WJA2506 YYZ → POP May 26, 15:39 UTCMay 27, 00:34 UTC8h 55m
2026-05-25 WJA754 YQR → YYZ May 25, 12:08 UTCMay 26, 03:05 UTC14h 57m
2026-05-25 WJA755 YYZ → YQR May 25, 03:14 UTCMay 26, 01:44 UTC22h 31m
2026-05-24 WJA2512 YYZ → BGI May 24, 12:44 UTCMay 25, 05:50 UTC17h 7m
2026-05-24 WJA2512 YYZ → BGI May 24, 12:45 UTCMay 24, 16:35 UTC3h 50m
2026-05-24 WJA2777 PUJ → YYZ May 24, 00:45 UTCMay 24, 04:10 UTC3h 25m
2026-05-23 WJA2776 YYZ → CUN May 23, 19:55 UTCMay 23, 23:30 UTC3h 35m
2026-05-23 WJA37 DUB → YYZ May 23, 11:00 UTCMay 23, 18:05 UTC7h 5m
2026-05-22 WJA637 YYZ → YYC May 22, 15:01 UTCMay 23, 11:40 UTC20h 39m
2026-05-22 WJA637 YYZ → YYC May 22, 15:05 UTCMay 22, 18:55 UTC3h 50m
2026-05-21 WJA2513 BGI → YYZ May 21, 19:39 UTCMay 22, 17:45 UTC22h 6m
2026-05-21 WJA2513 BGI → YYZ May 21, 13:25 UTCMay 22, 01:00 UTC11h 35m
2026-05-20 WJA2500 YYZ → LIR May 20, 13:17 UTCMay 21, 00:55 UTC11h 39m
2026-05-19 WJA2776 YYZ → CUN May 19, 19:37 UTCMay 20, 17:25 UTC21h 49m
2026-05-19 WJA47 DUB → YYZ May 19, 09:54 UTCMay 20, 04:15 UTC18h 21m
2026-05-19 WJA47 DUB → YYZ May 19, 09:54 UTCMay 20, 04:15 UTC18h 21m
2026-05-19 WJA46 YHZ → EDI May 19, 01:49 UTCMay 20, 01:45 UTC23h 56m
2026-05-19 WJA46 YHZ → EDI May 19, 01:50 UTCMay 19, 03:25 UTC1h 35m
2026-05-18 WJA712 YVR → YYZ May 18, 18:40 UTCMay 18, 22:45 UTC4h 5m
2026-05-18 WJA709 YYZ → YVR May 18, 12:30 UTCMay 18, 17:05 UTC4h 35m
2026-05-17 WJA2589 SXM → YYZ May 17, 19:55 UTCMay 18, 19:45 UTC23h 50m
2026-05-17 WJA2588 YYZ → SXM May 17, 14:15 UTCMay 17, 18:15 UTC4h 0m
2026-05-17 WJA2588 YYZ → SXM May 17, 14:15 UTCMay 18, 13:45 UTC23h 31m
2026-05-15 WJA2128 YYZ → PLS May 15, 13:45 UTCMay 15, 22:25 UTC8h 40m
2026-05-15 WJA622 YYC → YOW May 15, 07:30 UTCMay 15, 22:25 UTC14h 55m
2026-05-15 WJA192 YYJ → YEG May 15, 01:43 UTCMay 15, 22:25 UTC20h 42m
2026-05-14 WJA613 YOW → YYC May 14, 11:20 UTCMay 15, 09:45 UTC22h 26m
2026-05-14 WJA655 YYZ → YYC May 14, 00:20 UTCMay 14, 23:45 UTC23h 26m
2026-05-14 WJA655 YYZ → YYC May 14, 00:20 UTCMay 14, 04:10 UTC3h 50m
2026-05-13 WJA809 YHZ → YYZ May 13, 20:10 UTCMay 13, 22:05 UTC1h 55m
2026-05-12 WJA33 FCO → YYC May 12, 05:42 UTCMay 12, 11:25 UTC5h 44m
2026-05-12 WJA33 FCO → YYC May 12, 05:45 UTCMay 12, 11:25 UTC5h 40m
2026-05-11 WJA32 YYC → FCO May 11, 15:10 UTCMay 11, 20:50 UTC5h 40m
2026-05-10 WJA672 YYC → YYZ May 10, 19:30 UTCMay 11, 15:45 UTC20h 15m
2026-05-10 WJA635 YYZ → YYC May 10, 14:09 UTCMay 10, 23:50 UTC9h 41m
2026-05-09 WJA541 YWG → YVR May 9, 20:22 UTCMay 10, 19:45 UTC23h 23m
2026-05-09 WJA383 YYZ → YWG May 9, 17:00 UTCMay 9, 17:35 UTC35m
2026-05-09 WJA383 YYZ → YWG May 9, 16:59 UTCMay 10, 15:45 UTC22h 46m
2026-05-09 WJA380 YXX → YYC May 9, 11:25 UTCMay 9, 13:25 UTC2h 0m
2026-05-08 WJA1152 YYZ → SJU May 8, 14:02 UTCMay 9, 13:30 UTC23h 28m
2026-05-07 WJA386 YVR → YHZ May 7, 23:11 UTCMay 8, 21:45 UTC22h 34m

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

Mode-S C03F37 frequently asked

What is Mode-S code C03F37?
C03F37 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FXYK.
Where is Mode-S C03F37 registered?
Mode-S code C03F37 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03F37 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C03F37, octal 60037467, decimal 12,599,095.
What flights does C03F37 operate?
Mode-S C03F37 has broadcast 20 distinct callsigns, including WJA755, WJA47, WJA383, WJA2513, WJA2512.