Apparatus

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sensors Mode-S transponder

C03F85

ICAO 24-bit transponder address · allocated to Canada

Currently assigned to C-FYBK · BOEING 737-800 · operated by Westjet

Hex
C03F85
Octal
60037605
Decimal
12,599,173
Country
CA
Tail
C-FYBK
Type
B738
No current signal · last broadcast 3h ago
Flights observed
118
Distinct callsigns
20
Country
CA
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S C03F85.

Country allocation

The ICAO 24-bit address C03F85 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
WJA105 - 5 2026-07-11
WJA349 WestJet 4 2026-06-22
WJA8998 WestJet 3 2026-06-06
WJA813 WestJet 3 2026-04-15
WJA812 WestJet 3 2026-04-14
WJA632 WestJet 3 2026-06-30
WJA588 - 3 2026-07-02
WJA560 - 3 2026-04-13
WJA558 - 3 2026-06-29
WJA345 - 3 2026-07-13
WJA108 - 3 2026-06-25
WJA647 WestJet 2 2026-04-13
WJA641 WestJet 2 2026-06-11
WJA635 - 2 2026-07-12
WJA626 WestJet 2 2026-06-16
WJA514 - 2 2026-06-30
WJA502 - 2 2026-06-21
WJA386 - 2 2026-07-07
WJA375 WestJet 2 2026-04-16
WJA351 WestJet 2 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 WJA650 YYC → YYZ Jul 14, 00:25 UTCJul 14, 03:35 UTC3h 10m
2026-07-13 WJA397 - Jul 13, 18:10 UTCJul 13, 19:15 UTC1h 5m
2026-07-13 WJA392 - Jul 13, 15:35 UTCJul 13, 16:20 UTC45m
2026-07-13 WJA345 - Jul 13, 13:00 UTCJul 13, 13:55 UTC55m
2026-07-12 WJA635 YYZ → YYC Jul 12, 14:27 UTCJul 13, 13:15 UTC22h 49m
2026-07-12 WJA635 - Jul 12, 14:30 UTCJul 12, 18:15 UTC3h 45m
2026-07-11 WJA384 YWG → YYZ Jul 11, 21:35 UTCJul 11, 23:35 UTC2h 0m
2026-07-11 WJA538 YVR → YWG Jul 11, 17:00 UTCJul 11, 19:15 UTC2h 15m
2026-07-11 WJA105 YYC → YVR Jul 11, 13:35 UTCJul 11, 14:45 UTC1h 10m
2026-07-11 WJA585 - Jul 11, 00:35 UTCJul 11, 04:25 UTC3h 50m
2026-07-10 WJA582 - Jul 10, 20:10 UTCJul 10, 23:20 UTC3h 10m
2026-07-10 WJA347 YXE → YYC Jul 10, 17:40 UTCJul 10, 18:35 UTC55m
2026-07-10 WJA342 YYC → YXE Jul 10, 15:35 UTCJul 10, 16:20 UTC45m
2026-07-09 WJA827 - Jul 9, 20:15 UTCJul 9, 23:55 UTC3h 40m
2026-07-09 WJA826 YYC → YQG Jul 9, 15:40 UTCJul 9, 18:55 UTC3h 15m
2026-07-09 WJA223 YWG → YYC Jul 9, 12:00 UTCJul 9, 13:50 UTC1h 50m
2026-07-08 WJA230 YYC → YWG Jul 8, 20:50 UTCJul 8, 22:25 UTC1h 35m
2026-07-08 WJA637 YYZ → YYC Jul 8, 15:00 UTCJul 8, 18:40 UTC3h 40m
2026-07-07 WJA386 YWG → YYZ Jul 7, 23:05 UTCJul 8, 01:00 UTC1h 55m
2026-07-07 WJA386 YWG → YYZ Jul 7, 23:05 UTCJul 8, 21:15 UTC22h 11m
2026-07-07 WJA385 - Jul 7, 19:45 UTCJul 7, 22:00 UTC2h 15m
2026-07-02 WJA589 - Jul 2, 05:40 UTCJul 2, 06:15 UTC35m
2026-07-02 WJA588 - Jul 2, 02:55 UTCJul 2, 03:40 UTC45m
2026-07-01 WJA382 YWG → YYZ Jul 1, 15:50 UTCJul 1, 17:45 UTC1h 55m
2026-06-30 WJA588 - Jun 30, 20:50 UTCJun 30, 21:15 UTC25m
2026-06-30 WJA588 YYZ → YOW Jun 30, 20:42 UTCJul 1, 17:50 UTC21h 9m
2026-06-30 WJA632 YYC → YYZ Jun 30, 15:50 UTCJun 30, 19:15 UTC3h 25m
2026-06-30 WJA514 - Jun 30, 12:35 UTCJun 30, 13:45 UTC1h 10m
2026-06-30 WJA519 - Jun 30, 04:05 UTCJun 30, 05:15 UTC1h 10m
2026-06-29 WJA567 YUL → YYC Jun 29, 22:05 UTCJun 30, 02:20 UTC4h 16m
2026-06-29 WJA558 YYC → YUL Jun 29, 16:35 UTCJun 29, 20:15 UTC3h 40m
2026-06-29 WJA627 YYT → YYZ Jun 29, 10:20 UTCJun 29, 14:09 UTC3h 50m
2026-06-29 WJA1393 BNA → YYZ Jun 29, 00:29 UTCJun 29, 02:00 UTC1h 30m
2026-06-28 WJA1392 - Jun 28, 21:34 UTCJun 28, 23:09 UTC1h 35m
2026-06-28 WJA632 YYC → YYZ Jun 28, 16:05 UTCJun 28, 19:34 UTC3h 30m
2026-06-27 WJA749 - Jun 27, 22:04 UTCJun 28, 01:34 UTC3h 30m
2026-06-27 WJA746 - Jun 27, 17:29 UTCJun 27, 20:44 UTC3h 15m
2026-06-27 WJA514 - Jun 27, 12:45 UTCJun 27, 13:55 UTC1h 10m
2026-06-26 WJA558 YEG → YXE Jun 26, 16:30 UTCJun 26, 17:15 UTC45m
2026-06-26 WJA558 YYC → YUL Jun 26, 16:29 UTCJun 27, 14:05 UTC21h 36m
2026-06-26 WJA1093 LAS → YYC Jun 26, 01:24 UTCJun 26, 03:54 UTC2h 30m
2026-06-25 WJA1090 YYC → LAS Jun 25, 21:35 UTCJun 25, 23:55 UTC2h 20m
2026-06-25 WJA108 YVR → YYC Jun 25, 16:35 UTCJun 25, 17:39 UTC1h 5m
2026-06-25 WJA105 YYC → YVR Jun 25, 13:14 UTCJun 25, 14:24 UTC1h 10m
2026-06-23 WJA267 YYC → YYJ Jun 23, 20:11 UTCJun 23, 23:59 UTC3h 49m
2026-06-23 WJA135 YYC → YVR Jun 23, 04:11 UTCJun 23, 23:59 UTC19h 49m
2026-06-22 WJA349 YXE → YYC Jun 22, 22:40 UTCJun 22, 23:14 UTC35m
2026-06-22 WJA349 YXE → YYC Jun 22, 22:39 UTCJun 23, 13:15 UTC14h 36m
2026-06-22 WJA344 YMM → YYC Jun 22, 20:44 UTCJun 22, 21:35 UTC50m
2026-06-22 WJA266 YEG → YYC Jun 22, 17:55 UTCJun 22, 19:05 UTC1h 10m

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

Mode-S C03F85 frequently asked

What is Mode-S code C03F85?
C03F85 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-FYBK.
Where is Mode-S C03F85 registered?
Mode-S code C03F85 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C03F85 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 C03F85, octal 60037605, decimal 12,599,173.
What flights does C03F85 operate?
Mode-S C03F85 has broadcast 20 distinct callsigns, including WJA105, WJA349, WJA8998, WJA813, WJA812.