sensors Mode-S transponder
C05DA4
ICAO 24-bit transponder address · allocated to Canada
Currently assigned to C-GJLZ · BOEING 737-800 · operated by Westjet
- Hex
- C05DA4
- Octal
- 60056644
- Decimal
- 12,606,884
- Country
- CA
- Tail
- C-GJLZ
- Type
- B738
- Flights observed
- 222
- Distinct callsigns
- 20
- Country
- CA
- Last broadcast
- 16h ago
Last known position
Country allocation
The ICAO 24-bit address C05DA4 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 |
|---|---|---|---|
| WJA1056 | - | 10 | 2026-06-28 |
| WJA1057 | - | 9 | 2026-06-28 |
| WJA1103 | - | 8 | 2026-07-02 |
| WJA1850 | - | 7 | 2026-07-04 |
| WJA1862 | - | 6 | 2026-06-20 |
| WJA1851 | - | 6 | 2026-07-04 |
| WJA2151 | - | 5 | 2026-06-13 |
| WJA384 | WestJet | 4 | 2026-06-07 |
| WJA315 | WestJet | 4 | 2026-06-05 |
| WJA1723 | - | 4 | 2026-07-03 |
| WJA1722 | WestJet | 4 | 2026-07-03 |
| WJA122 | - | 4 | 2026-07-02 |
| WJA1102 | WestJet | 4 | 2026-07-01 |
| WJA539 | WestJet | 3 | 2026-05-20 |
| WJA319 | - | 3 | 2026-07-14 |
| WJA308 | WestJet | 3 | 2026-06-05 |
| WJA2412 | WestJet | 3 | 2026-04-14 |
| WJA2301 | WestJet | 3 | 2026-04-14 |
| WJA179 | - | 3 | 2026-06-30 |
| WJA171 | - | 3 | 2026-06-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | WJA319 | - | Jul 14, 00:35 UTC | Jul 14, 02:00 UTC | 1h 25m |
| 2026-07-13 | WJA530 | - | Jul 13, 21:45 UTC | Jul 13, 22:30 UTC | 45m |
| 2026-07-13 | WJA531 | - | Jul 13, 19:45 UTC | Jul 13, 20:45 UTC | 1h 0m |
| 2026-07-13 | WJA146 | - | Jul 13, 17:55 UTC | Jul 13, 18:30 UTC | 35m |
| 2026-07-13 | WJA104 | - | Jul 13, 14:40 UTC | Jul 13, 15:40 UTC | 1h 0m |
| 2026-07-13 | WJA137 | YYC → YVR | Jul 13, 05:55 UTC | Jul 13, 07:15 UTC | 1h 20m |
| 2026-07-12 | WJA1025 | - | Jul 12, 22:25 UTC | Jul 13, 00:45 UTC | 2h 20m |
| 2026-07-12 | WJA1022 | - | Jul 12, 18:15 UTC | Jul 12, 21:05 UTC | 2h 50m |
| 2026-07-11 | WJA823 | YYC → YYC | Jul 11, 17:20 UTC | Jul 12, 04:45 UTC | 11h 25m |
| 2026-07-09 | WJA783 | YQT → YYC | Jul 9, 00:55 UTC | Jul 9, 03:35 UTC | 2h 40m |
| 2026-07-08 | WJA782 | YYC → YQT | Jul 8, 21:05 UTC | Jul 8, 23:20 UTC | 2h 15m |
| 2026-07-08 | WJA4023 | YYC → YYC | Jul 8, 12:40 UTC | Jul 8, 16:00 UTC | 3h 20m |
| 2026-07-07 | WJA1503 | - | Jul 7, 21:45 UTC | Jul 7, 23:50 UTC | 2h 5m |
| 2026-07-07 | WJA1500 | YYC → PDX | Jul 7, 17:15 UTC | Jul 7, 19:35 UTC | 2h 20m |
| 2026-07-07 | WJA1501 | - | Jul 7, 13:15 UTC | Jul 7, 15:20 UTC | 2h 5m |
| 2026-07-06 | WJA1540 | YYC → IAH | Jul 6, 14:48 UTC | Jul 7, 06:15 UTC | 15h 27m |
| 2026-07-05 | WJA567 | YUL → YYC | Jul 5, 22:35 UTC | Jul 6, 02:50 UTC | 4h 15m |
| 2026-07-05 | WJA567 | YUL → YYC | Jul 5, 22:32 UTC | Jul 6, 21:00 UTC | 22h 29m |
| 2026-07-05 | WJA558 | - | Jul 5, 16:30 UTC | Jul 5, 20:00 UTC | 3h 30m |
| 2026-07-05 | WJA136 | YVR → YYC | Jul 5, 13:55 UTC | Jul 5, 14:55 UTC | 1h 0m |
| 2026-07-04 | WJA2120 | YVR → YVR | Jul 4, 16:00 UTC | Jul 5, 01:20 UTC | 9h 20m |
| 2026-07-04 | WJA1851 | - | Jul 4, 13:30 UTC | Jul 4, 14:00 UTC | 30m |
| 2026-07-04 | WJA1850 | - | Jul 4, 01:50 UTC | Jul 4, 02:45 UTC | 55m |
| 2026-07-03 | WJA1723 | - | Jul 3, 20:10 UTC | Jul 3, 22:50 UTC | 2h 40m |
| 2026-07-03 | WJA1722 | YVR → PSP | Jul 3, 16:15 UTC | Jul 3, 18:30 UTC | 2h 15m |
| 2026-07-03 | WJA1851 | - | Jul 3, 13:50 UTC | Jul 3, 14:20 UTC | 30m |
| 2026-07-03 | WJA1850 | - | Jul 3, 02:15 UTC | Jul 3, 03:00 UTC | 45m |
| 2026-07-02 | WJA1103 | - | Jul 2, 19:20 UTC | Jul 2, 21:45 UTC | 2h 25m |
| 2026-07-02 | WJA122 | - | Jul 2, 00:10 UTC | Jul 2, 01:00 UTC | 50m |
| 2026-07-02 | WJA122 | YVR → YYC | Jul 2, 00:10 UTC | Jul 2, 21:50 UTC | 21h 41m |
| 2026-07-01 | WJA1103 | - | Jul 1, 20:00 UTC | Jul 1, 22:35 UTC | 2h 35m |
| 2026-07-01 | WJA1102 | YYZ → LAX | Jul 1, 15:30 UTC | Jul 1, 17:55 UTC | 2h 25m |
| 2026-07-01 | WJA127 | YYC → YVR | Jul 1, 00:40 UTC | Jul 1, 01:45 UTC | 1h 5m |
| 2026-06-30 | WJA118 | - | Jun 30, 21:45 UTC | Jun 30, 22:50 UTC | 1h 5m |
| 2026-06-30 | WJA179 | YYC → YVR | Jun 30, 01:00 UTC | Jun 30, 02:10 UTC | 1h 10m |
| 2026-06-30 | WJA179 | YYC → YVR | Jun 30, 01:00 UTC | Jun 30, 22:55 UTC | 21h 56m |
| 2026-06-29 | WJA178 | - | Jun 29, 22:19 UTC | Jun 29, 23:25 UTC | 1h 5m |
| 2026-06-29 | WJA171 | - | Jun 29, 19:15 UTC | Jun 29, 20:24 UTC | 1h 10m |
| 2026-06-29 | WJA170 | YVR → YEG | Jun 29, 16:35 UTC | Jun 29, 17:45 UTC | 1h 10m |
| 2026-06-28 | WJA1057 | LAS → YVR | Jun 28, 20:25 UTC | Jun 28, 22:49 UTC | 2h 25m |
| 2026-06-28 | WJA1057 | LAS → YVR | Jun 28, 20:24 UTC | Jun 29, 17:45 UTC | 21h 21m |
| 2026-06-28 | WJA1056 | - | Jun 28, 16:55 UTC | Jun 28, 18:59 UTC | 2h 5m |
| 2026-06-28 | WJA179 | YYC → YVR | Jun 28, 01:44 UTC | Jun 28, 02:44 UTC | 1h 0m |
| 2026-06-27 | WJA178 | - | Jun 27, 23:14 UTC | Jun 28, 00:25 UTC | 1h 10m |
| 2026-06-27 | WJA171 | - | Jun 27, 20:49 UTC | Jun 27, 21:59 UTC | 1h 10m |
| 2026-06-27 | WJA170 | YVR → YEG | Jun 27, 18:20 UTC | Jun 27, 19:29 UTC | 1h 10m |
| 2026-06-26 | WJA2053 | CUN → YVR | Jun 26, 22:49 UTC | Jun 27, 04:44 UTC | 5h 55m |
| 2026-06-26 | WJA2052 | YVR → CUN | Jun 26, 15:29 UTC | Jun 26, 20:59 UTC | 5h 30m |
| 2026-06-25 | WJA4175 | LAS → YVR | Jun 25, 21:55 UTC | Jun 26, 00:20 UTC | 2h 25m |
| 2026-06-24 | WJA1056 | - | Jun 24, 17:14 UTC | Jun 24, 19:34 UTC | 2h 20m |
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-GJLZ page for operator, model, and routing details .