Apparatus

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sensors Mode-S transponder

C0637C

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C0637C
Octal
60061574
Decimal
12,608,380
Country
CA
Tail
C-GLRN
Type
B738
Broadcasting now · callsign WJA105 · 37,775 ft
Flights observed
207
Distinct callsigns
20
Country
CA
Last broadcast
11h ago

Current position

C0637C is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C0637C 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
WJA2603 WestJet 6 2026-04-23
WJA319 WestJet 5 2026-06-24
WJA2609 WestJet 5 2026-04-23
WJA1553 - 5 2026-07-06
WJA134 WestJet 5 2026-05-17
WJA845 WestJet 4 2026-04-25
WJA844 WestJet 4 2026-04-25
WJA592 - 4 2026-07-05
WJA553 WestJet 4 2026-05-15
WJA502 WestJet 4 2026-04-22
WJA397 WestJet 4 2026-05-25
WJA393 - 4 2026-07-10
WJA392 WestJet 4 2026-05-25
WJA2602 WestJet 4 2026-04-19
WJA828 WestJet 3 2026-05-26
WJA552 WestJet 3 2026-05-11
WJA518 WestJet 3 2026-05-26
WJA515 WestJet 3 2026-05-26
WJA509 WestJet 3 2026-04-22
WJA2604 WestJet 3 2026-04-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 WJA155 - Jul 14, 01:40 UTCJul 14, 02:15 UTC35m
2026-07-13 WJA156 YYC → YEG Jul 13, 23:40 UTCJul 14, 00:10 UTC30m
2026-07-13 WJA1019 - Jul 13, 19:05 UTCJul 13, 21:40 UTC2h 35m
2026-07-13 WJA1018 YYC → SAN Jul 13, 14:30 UTCJul 13, 17:55 UTC3h 25m
2026-07-12 WJA823 YYC → YYC Jul 12, 17:20 UTCJul 13, 05:15 UTC11h 55m
2026-07-12 WJA102 - Jul 12, 13:01 UTCJul 12, 13:55 UTC55m
2026-07-12 WJA731 - Jul 12, 02:50 UTCJul 12, 07:35 UTC4h 45m
2026-07-11 WJA1181 RSW → YYZ Jul 11, 21:40 UTCJul 12, 00:10 UTC2h 30m
2026-07-11 WJA1180 - Jul 11, 17:45 UTCJul 11, 20:30 UTC2h 45m
2026-07-11 WJA626 YYC → YYZ Jul 11, 12:20 UTCJul 11, 15:35 UTC3h 15m
2026-07-10 WJA393 - Jul 10, 12:05 UTCJul 10, 13:15 UTC1h 10m
2026-07-10 WJA393 YQR → YYC Jul 10, 12:00 UTCJul 11, 06:40 UTC18h 41m
2026-07-09 WJA222 - Jul 9, 14:25 UTCJul 9, 15:00 UTC35m
2026-07-09 WJA222 YYC → YWG Jul 9, 14:25 UTCJul 10, 13:00 UTC22h 36m
2026-07-08 WJA1595 ATL → YYC Jul 8, 00:00 UTCJul 8, 04:20 UTC4h 20m
2026-07-07 WJA1592 YYC → ATL Jul 7, 17:55 UTCJul 7, 21:50 UTC3h 55m
2026-07-06 WJA1553 SEA → YYC Jul 6, 18:20 UTCJul 6, 19:20 UTC1h 0m
2026-07-06 WJA1553 SEA → YYC Jul 6, 18:16 UTCJul 7, 03:30 UTC9h 15m
2026-07-06 WJA1550 YYC → SEA Jul 6, 15:30 UTCJul 6, 16:45 UTC1h 15m
2026-07-06 WJA221 - Jul 6, 11:15 UTCJul 6, 13:25 UTC2h 10m
2026-07-05 WJA593 - Jul 5, 22:40 UTCJul 6, 02:30 UTC3h 50m
2026-07-05 WJA592 - Jul 5, 18:20 UTCJul 5, 21:20 UTC3h 0m
2026-07-05 WJA224 YYC → YWG Jul 5, 15:25 UTCJul 5, 17:00 UTC1h 35m
2026-07-05 WJA100 YVR → YYC Jul 5, 12:15 UTCJul 5, 13:20 UTC1h 5m
2026-07-04 WJA112 YVR → YYC Jul 4, 18:57 UTCJul 5, 17:00 UTC22h 3m
2026-07-04 WJA111 YYC → YVR Jul 4, 16:25 UTCJul 4, 17:40 UTC1h 15m
2026-07-04 WJA747 - Jul 4, 11:05 UTCJul 4, 14:45 UTC3h 40m
2026-07-04 WJA748 - Jul 4, 05:55 UTCJul 4, 09:05 UTC3h 10m
2026-07-04 WJA783 YQT → YYC Jul 4, 00:35 UTCJul 4, 03:10 UTC2h 35m
2026-07-03 WJA782 YYC → YQT Jul 3, 20:55 UTCJul 3, 23:10 UTC2h 15m
2026-07-03 WJA1553 SEA → YYC Jul 3, 18:00 UTCJul 3, 19:05 UTC1h 5m
2026-07-03 WJA139 YYC → YVR Jul 3, 01:00 UTCJul 3, 02:15 UTC1h 15m
2026-07-03 WJA139 YYC → YVR Jul 3, 01:00 UTCJul 3, 23:00 UTC22h 1m
2026-07-02 WJA347 - Jul 2, 18:05 UTCJul 2, 19:00 UTC55m
2026-07-02 WJA342 YYC → YXE Jul 2, 16:00 UTCJul 2, 16:50 UTC50m
2026-07-01 WJA186 YLW → YYC Jul 1, 18:05 UTCJul 2, 16:50 UTC22h 45m
2026-07-01 WJA608 YYC → YOW Jul 1, 01:22 UTCJul 2, 01:00 UTC23h 39m
2026-06-30 WJA148 YYC → YEG Jun 30, 20:38 UTCJul 1, 19:00 UTC22h 23m
2026-06-30 WJA631 YYZ → YYC Jun 30, 11:13 UTCJul 1, 11:00 UTC23h 47m
2026-06-30 WJA631 - Jun 30, 11:15 UTCJun 30, 13:00 UTC1h 45m
2026-06-28 WJA2567 YYZ → YYZ Jun 28, 12:55 UTCJun 28, 22:04 UTC9h 10m
2026-06-27 WJA831 YQB → YYC Jun 27, 23:44 UTCJun 28, 22:15 UTC22h 31m
2026-06-27 WJA830 YYC → YQB Jun 27, 18:44 UTCJun 28, 15:44 UTC21h 1m
2026-06-27 WJA830 - Jun 27, 18:45 UTCJun 27, 19:00 UTC15m
2026-06-27 WJA100 YVR → YYC Jun 27, 12:04 UTCJun 27, 13:15 UTC1h 10m
2026-06-27 WJA731 - Jun 27, 02:59 UTCJun 27, 07:45 UTC4h 45m
2026-06-26 WJA1153 SJU → YYZ Jun 26, 20:10 UTCJun 26, 23:49 UTC3h 40m
2026-06-26 WJA1152 YYZ → SJU Jun 26, 14:15 UTCJun 26, 18:49 UTC4h 35m
2026-06-24 WJA710 YVR → YYZ Jun 24, 16:14 UTCJun 24, 20:24 UTC4h 10m
2026-06-24 WJA319 YOW → YEG Jun 24, 00:40 UTCJun 24, 01:49 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-GLRN page for operator, model, and routing details .

Mode-S C0637C frequently asked

What is Mode-S code C0637C?
C0637C is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GLRN.
Where is Mode-S C0637C registered?
Mode-S code C0637C is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C0637C broadcasting right now?
Yes. Mode-S C0637C is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C0637C, octal 60061574, decimal 12,608,380.
What flights does C0637C operate?
Mode-S C0637C has broadcast 20 distinct callsigns, including WJA2603, WJA319, WJA2609, WJA1553, WJA134.