Apparatus

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sensors Mode-S transponder

C04CF4

ICAO 24-bit transponder address · allocated to Canada

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

Hex
C04CF4
Octal
60046364
Decimal
12,602,612
Country
CA
Tail
C-GDDR
Type
B38M
No current signal · last broadcast 1h ago
Flights observed
128
Distinct callsigns
20
Country
CA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S C04CF4.

Country allocation

The ICAO 24-bit address C04CF4 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
WJA622 WestJet 3 2026-05-22
WJA611 WestJet 3 2026-04-13
WJA2561 WestJet 3 2026-05-22
WJA2241 WestJet 3 2026-04-16
WJA2240 - 3 2026-04-15
WJA2197 WestJet 3 2026-05-07
WJA2196 WestJet 3 2026-05-07
WJA1862 WestJet 3 2026-05-14
WJA1429 WestJet 3 2026-04-18
WJA1428 WestJet 3 2026-04-17
WJA1411 WestJet 3 2026-04-17
WJA1410 WestJet 3 2026-04-16
WJA762 WestJet 2 2026-05-19
WJA71 WestJet 2 2026-05-15
WJA671 WestJet 2 2026-04-29
WJA646 WestJet 2 2026-05-25
WJA627 WestJet 2 2026-05-28
WJA588 WestJet 2 2026-04-19
WJA567 WestJet 2 2026-05-28
WJA37 WestJet 2 2026-05-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 WJA60 YYC → EDI May 30, 01:15 UTCMay 30, 03:50 UTC2h 35m
2026-05-29 WJA1591 ATL → YYC May 29, 18:40 UTCMay 29, 22:30 UTC3h 50m
2026-05-29 WJA1590 YYC → ATL May 29, 13:10 UTCMay 29, 17:15 UTC4h 5m
2026-05-28 WJA567 YKF → YYC May 28, 21:45 UTCMay 28, 22:45 UTC1h 0m
2026-05-28 WJA567 YKF → YYC May 28, 21:44 UTCMay 29, 21:00 UTC23h 17m
2026-05-28 WJA558 YEG → YXE May 28, 16:40 UTCMay 28, 20:20 UTC3h 40m
2026-05-28 WJA627 YYT → YYZ May 28, 10:35 UTCMay 28, 14:20 UTC3h 45m
2026-05-27 WJA2129 PLS → YYZ May 27, 19:45 UTCMay 27, 22:30 UTC2h 45m
2026-05-27 WJA2128 YYZ → PLS May 27, 17:15 UTCMay 27, 17:30 UTC15m
2026-05-27 WJA2128 YYZ → PLS May 27, 13:30 UTCMay 27, 16:10 UTC2h 40m
2026-05-26 WJA2566 YYZ → MBJ May 26, 12:40 UTCMay 26, 21:44 UTC9h 5m
2026-05-25 WJA646 YYC → YYZ May 25, 21:40 UTCMay 25, 23:00 UTC1h 20m
2026-05-25 WJA646 YYC → YYZ May 25, 21:39 UTCMay 26, 21:00 UTC23h 21m
2026-05-25 WJA639 YYZ → YYC May 25, 16:15 UTCMay 25, 20:04 UTC3h 49m
2026-05-24 WJA37 DUB → YYZ May 24, 11:00 UTCMay 24, 11:35 UTC35m
2026-05-24 WJA37 DUB → YYZ May 24, 10:59 UTCMay 24, 23:46 UTC12h 47m
2026-05-24 WJA36 YYZ → DUB May 24, 02:45 UTCMay 24, 09:05 UTC6h 20m
2026-05-23 WJA570 YEG → YWG May 23, 12:08 UTCMay 24, 11:00 UTC22h 52m
2026-05-22 WJA2561 KIN → YYZ May 22, 20:38 UTCMay 23, 19:00 UTC22h 23m
2026-05-22 WJA2561 KIN → YYZ May 22, 15:25 UTCMay 23, 00:30 UTC9h 5m
2026-05-22 WJA622 YYC → YOW May 22, 07:10 UTCMay 22, 10:50 UTC3h 40m
2026-05-22 WJA655 YYZ → YYC May 22, 00:10 UTCMay 22, 04:00 UTC3h 50m
2026-05-20 WJA709 YYZ → YVR May 20, 12:34 UTCMay 20, 22:55 UTC10h 22m
2026-05-20 WJA622 YYC → YOW May 20, 07:15 UTCMay 20, 10:35 UTC3h 20m
2026-05-20 WJA622 YYC → YOW May 20, 07:14 UTCMay 20, 22:55 UTC15h 42m
2026-05-19 WJA831 YQB → YYC May 19, 23:50 UTCMay 20, 04:15 UTC4h 25m
2026-05-19 WJA762 YYC → YYT May 19, 03:55 UTCMay 19, 05:00 UTC1h 5m
2026-05-19 WJA762 YYC → YYT May 19, 03:54 UTCMay 20, 03:00 UTC23h 6m
2026-05-19 WJA233 YHZ → YYC May 19, 00:40 UTCMay 19, 02:25 UTC1h 45m
2026-05-18 WJA591 YHZ → YWG May 18, 19:20 UTCMay 18, 23:10 UTC3h 50m
2026-05-18 WJA33 FCO → YYC May 18, 05:35 UTCMay 18, 11:45 UTC6h 10m
2026-05-17 WJA32 YYC → FCO May 17, 15:31 UTCMay 17, 20:40 UTC5h 10m
2026-05-17 WJA800 YYZ → YHZ May 17, 11:45 UTCMay 17, 13:20 UTC1h 35m
2026-05-17 WJA736 YYC → YXU May 17, 06:00 UTCMay 17, 09:55 UTC3h 55m
2026-05-16 WJA2151 PVR → YVR May 16, 16:40 UTCMay 17, 03:25 UTC10h 45m
2026-05-15 WJA793 YHZ → YVR May 15, 21:09 UTCMay 16, 19:45 UTC22h 37m
2026-05-15 WJA71 AMS → YHZ May 15, 11:35 UTCMay 15, 13:00 UTC1h 25m
2026-05-15 WJA71 AMS → YHZ May 15, 11:35 UTCMay 16, 03:00 UTC15h 25m
2026-05-15 WJA70 YHZ → AMS May 15, 03:00 UTCMay 15, 08:45 UTC5h 45m
2026-05-14 WJA1863 HNL → YVR May 14, 08:30 UTCMay 14, 08:40 UTC10m
2026-05-14 WJA1863 HNL → YVR May 14, 08:26 UTCMay 15, 07:00 UTC22h 35m
2026-05-14 WJA1862 YVR → HNL May 14, 06:45 UTCMay 14, 06:55 UTC10m
2026-05-14 WJA1862 YVR → HNL May 14, 00:55 UTCMay 14, 02:05 UTC1h 10m
2026-05-14 WJA1862 YVR → HNL May 14, 00:55 UTCMay 14, 23:00 UTC22h 6m
2026-05-13 WJA1103 LAX → YYZ May 13, 19:40 UTCMay 13, 22:05 UTC2h 25m
2026-05-13 WJA1102 YYZ → LAX May 13, 15:35 UTCMay 13, 17:55 UTC2h 20m
2026-05-13 WJA731 YYZ → YVR May 13, 02:50 UTCMay 13, 07:35 UTC4h 45m
2026-05-12 WJA2566 YYZ → MBJ May 12, 12:55 UTCMay 12, 22:05 UTC9h 10m
2026-05-11 WJA1034 YYZ → MCO May 11, 21:15 UTCMay 12, 03:10 UTC5h 55m
2026-05-11 WJA2581 CUN → YYZ May 11, 16:35 UTCMay 11, 19:30 UTC2h 56m

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

Mode-S C04CF4 frequently asked

What is Mode-S code C04CF4?
C04CF4 is an ICAO 24-bit transponder address. Allocated to Canada. Assigned to C-GDDR.
Where is Mode-S C04CF4 registered?
Mode-S code C04CF4 is allocated to Canada (CA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is C04CF4 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 C04CF4, octal 60046364, decimal 12,602,612.
What flights does C04CF4 operate?
Mode-S C04CF4 has broadcast 20 distinct callsigns, including WJA622, WJA611, WJA2561, WJA2241, WJA2240.