Apparatus

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sensors Mode-S transponder

C04DDC

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C04DDC
Octal
60046734
Decimal
12,602,844
Country
CA
Tail
C-GDMP
Type
B738
Broadcasting now · callsign WJA573 · 36,000 ft
Flights observed
97
Distinct callsigns
20
Country
CA
Last broadcast
18h ago

Current position

C04DDC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address C04DDC 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
WJA432 - 3 2026-04-14
WJA873 WestJet 2 2026-05-26
WJA789 WestJet 2 2026-05-18
WJA755 WestJet 2 2026-04-17
WJA754 - 2 2026-04-17
WJA592 WestJet 2 2026-05-22
WJA559 WestJet 2 2026-05-08
WJA502 WestJet 2 2026-05-27
WJA433 - 2 2026-04-13
WJA430 - 2 2026-04-13
WJA297 WestJet 2 2026-04-26
WJA263 WestJet 2 2026-05-19
WJA2587 WestJet 2 2026-04-17
WJA2580 - 2 2026-04-17
WJA2507 WestJet 2 2026-04-16
WJA2500 WestJet 2 2026-04-30
WJA2131 WestJet 2 2026-04-15
WJA2130 WestJet 2 2026-04-14
WJA183 WestJet 2 2026-05-04
WJA136 WestJet 2 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 WJA150 YYC → YEG May 29, 03:00 UTCMay 29, 08:40 UTC5h 40m
2026-05-28 WJA4000 YEG → YFI May 28, 12:45 UTCMay 29, 08:40 UTC19h 55m
2026-05-27 WJA773 YEG → YQQ May 27, 19:55 UTCMay 28, 15:20 UTC19h 25m
2026-05-27 WJA502 YYJ → YEG May 27, 16:55 UTCMay 27, 18:10 UTC1h 15m
2026-05-27 WJA502 YYJ → YEG May 27, 16:54 UTCMay 28, 15:00 UTC22h 6m
2026-05-27 WJA261 YWG → YYC May 27, 14:30 UTCMay 27, 15:40 UTC1h 10m
2026-05-27 WJA343 YQT → YYC May 27, 12:05 UTCMay 27, 13:00 UTC55m
2026-05-26 WJA601 YXE → YYC May 26, 13:14 UTCMay 27, 13:00 UTC23h 47m
2026-05-26 WJA873 YHZ → YXE May 26, 01:00 UTCMay 26, 05:40 UTC4h 40m
2026-05-26 WJA873 YHZ → YXE May 26, 00:57 UTCMay 26, 22:59 UTC22h 3m
2026-05-22 WJA592 YYZ → YUL May 22, 18:15 UTCMay 22, 21:15 UTC3h 0m
2026-05-22 WJA592 YYZ → YUL May 22, 18:15 UTCMay 22, 21:15 UTC3h 1m
2026-05-22 WJA224 YEG → YOW May 22, 15:30 UTCMay 22, 17:15 UTC1h 45m
2026-05-21 WJA1591 ATL → YYC May 21, 20:10 UTCMay 22, 00:20 UTC4h 10m
2026-05-21 WJA1590 YYC → ATL May 21, 13:15 UTCMay 21, 17:05 UTC3h 50m
2026-05-20 WJA813 YQM → YYC May 20, 21:25 UTCMay 21, 02:20 UTC4h 55m
2026-05-20 WJA812 YYC → YQM May 20, 15:50 UTCMay 20, 19:50 UTC4h 0m
2026-05-19 WJA349 YXE → YYC May 19, 22:54 UTCMay 20, 19:50 UTC20h 57m
2026-05-19 WJA263 YXE → YYC May 19, 15:26 UTCMay 20, 00:00 UTC8h 34m
2026-05-19 WJA263 YXE → YYC May 19, 15:30 UTCMay 19, 16:35 UTC1h 5m
2026-05-19 WJA100 YVR → YYC May 19, 12:10 UTCMay 19, 13:10 UTC1h 0m
2026-05-19 WJA133 YYC → YVR May 19, 04:20 UTCMay 19, 05:25 UTC1h 5m
2026-05-18 WJA789 YYG → YYC May 18, 21:30 UTCMay 19, 02:30 UTC5h 0m
2026-05-18 WJA789 YYG → YYC May 18, 21:00 UTCMay 18, 21:25 UTC25m
2026-05-18 WJA788 YYC → YYG May 18, 15:25 UTCMay 18, 19:40 UTC4h 14m
2026-05-15 WJA151 YEG → YYC May 15, 23:14 UTCMay 15, 23:55 UTC41m
2026-05-15 WJA148 YYC → YEG May 15, 21:35 UTCMay 15, 22:00 UTC25m
2026-05-15 WJA8942 YVR → YYC May 15, 19:15 UTCMay 15, 20:15 UTC1h 0m
2026-05-15 WJA473 YLW → YWG May 15, 15:55 UTCMay 15, 17:20 UTC1h 25m
2026-05-15 WJA514 YLW → YYZ May 15, 13:10 UTCMay 15, 14:20 UTC1h 10m
2026-05-15 WJA519 YYC → YQQ May 15, 04:35 UTCMay 15, 05:50 UTC1h 15m
2026-05-14 WJA749 YQY → YYC May 14, 22:00 UTCMay 15, 01:50 UTC3h 50m
2026-05-14 WJA746 YYC → YXU May 14, 17:25 UTCMay 14, 20:35 UTC3h 10m
2026-05-13 WJA651 YYZ → YYC May 13, 22:45 UTCMay 14, 02:35 UTC3h 50m
2026-05-10 WJA640 YYC → YYZ May 10, 20:25 UTCMay 10, 23:39 UTC3h 15m
2026-05-10 WJA110 YVR → YYC May 10, 17:49 UTCMay 10, 18:49 UTC1h 0m
2026-05-10 WJA107 YYC → YVR May 10, 14:30 UTCMay 10, 15:45 UTC1h 15m
2026-05-09 WJA107 YYC → YVR May 9, 14:34 UTCMay 10, 07:15 UTC16h 41m
2026-05-08 WJA488 YEG → YWG May 8, 19:15 UTCMay 9, 18:55 UTC23h 40m
2026-05-08 WJA559 YXE → YEG May 8, 11:19 UTCMay 8, 15:35 UTC4h 15m
2026-05-08 WJA559 YXE → YEG May 8, 11:17 UTCMay 9, 00:15 UTC12h 58m
2026-05-07 WJA566 YYC → YUL May 7, 23:45 UTCMay 8, 03:24 UTC3h 40m
2026-05-06 WJA185 YYC → YYJ May 6, 17:17 UTCMay 7, 01:55 UTC8h 38m
2026-05-06 WJA136 YVR → YYC May 6, 13:55 UTCMay 6, 15:00 UTC1h 5m
2026-05-06 WJA136 YVR → YYC May 6, 13:53 UTCMay 7, 01:55 UTC12h 2m
2026-05-06 WJA129 YYC → YVR May 6, 02:35 UTCMay 6, 03:40 UTC1h 5m
2026-05-05 WJA122 YVR → YYC May 5, 23:50 UTCMay 6, 00:55 UTC1h 5m
2026-05-05 WJA191 YYC → YXX May 5, 01:29 UTCMay 6, 01:01 UTC23h 32m
2026-05-04 WJA183 YEG → YVR May 4, 15:45 UTCMay 4, 16:35 UTC50m
2026-05-04 WJA183 YEG → YVR May 4, 15:44 UTCMay 5, 13:10 UTC21h 27m

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

Mode-S C04DDC frequently asked

What is Mode-S code C04DDC?
C04DDC is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GDMP.
Where is Mode-S C04DDC registered?
Mode-S code C04DDC is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C04DDC broadcasting right now?
Yes. Mode-S C04DDC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex C04DDC, octal 60046734, decimal 12,602,844.
What flights does C04DDC operate?
Mode-S C04DDC has broadcast 20 distinct callsigns, including WJA432, WJA873, WJA789, WJA755, WJA754.