sensors Mode-S transponder
C079CE
ICAO 24-bit transponder address · allocated to Canada
Currently assigned to C-GUDH · BOEING 787-9 Dreamliner · operated by Westjet
- Hex
- C079CE
- Octal
- 60074716
- Decimal
- 12,614,094
- Country
- CA
- Tail
- C-GUDH
- Type
- B789
- Flights observed
- 95
- Distinct callsigns
- 19
- Country
- CA
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address C079CE 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 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| WJA1 | - | 10 | 2026-05-15 |
| WJA9 | WestJet | 9 | 2026-05-17 |
| WJA2201 | WestJet | 9 | 2026-04-25 |
| WJA10 | WestJet | 9 | 2026-05-17 |
| WJA2200 | WestJet | 8 | 2026-04-25 |
| WJA2 | - | 8 | 2026-05-30 |
| WJA81 | WestJet | 6 | 2026-05-23 |
| WJA87 | WestJet | 4 | 2026-05-24 |
| WJA80 | WestJet | 4 | 2026-05-22 |
| WJA29 | WestJet | 4 | 2026-05-16 |
| WJA25 | WestJet | 4 | 2026-05-29 |
| WJA86 | WestJet | 3 | 2026-05-23 |
| WJA28 | WestJet | 3 | 2026-05-16 |
| WJA24 | WestJet | 3 | 2026-05-29 |
| WJA18 | WestJet | 3 | 2026-05-12 |
| WJA17 | WestJet | 3 | 2026-05-12 |
| WJA4109 | WestJet | 2 | 2026-05-10 |
| WJA21 | WestJet | 2 | 2026-05-25 |
| WJA20 | WestJet | 1 | 2026-05-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | WJA2 | - | May 30, 02:55 UTC | May 30, 05:25 UTC | 2h 30m |
| 2026-05-29 | WJA25 | LGW → YHZ | May 29, 13:20 UTC | May 29, 23:20 UTC | 10h 0m |
| 2026-05-29 | WJA24 | YHZ → LGW | May 29, 01:25 UTC | May 29, 11:05 UTC | 9h 40m |
| 2026-05-25 | WJA21 | EDI → YYC | May 25, 11:35 UTC | May 25, 19:15 UTC | 7h 40m |
| 2026-05-25 | WJA21 | EDI → YYC | May 25, 11:32 UTC | May 25, 21:19 UTC | 9h 48m |
| 2026-05-25 | WJA20 | YYC → AMS | May 25, 01:55 UTC | May 25, 08:50 UTC | 6h 55m |
| 2026-05-24 | WJA87 | ICN → YYC | May 24, 11:55 UTC | May 24, 21:50 UTC | 9h 55m |
| 2026-05-23 | WJA86 | YYC → ICN | May 23, 22:10 UTC | May 24, 09:10 UTC | 11h 0m |
| 2026-05-23 | WJA81 | NRT → YYC | May 23, 10:05 UTC | May 23, 18:25 UTC | 8h 21m |
| 2026-05-22 | WJA80 | YYC → NRT | May 22, 21:10 UTC | May 23, 06:40 UTC | 9h 29m |
| 2026-05-22 | WJA81 | NRT → YYC | May 22, 10:05 UTC | May 22, 18:10 UTC | 8h 5m |
| 2026-05-22 | WJA81 | NRT → YYC | May 22, 10:02 UTC | May 23, 06:40 UTC | 20h 38m |
| 2026-05-21 | WJA80 | YYC → NRT | May 21, 21:10 UTC | May 22, 07:05 UTC | 9h 55m |
| 2026-05-21 | WJA81 | NRT → YYC | May 21, 10:15 UTC | May 21, 18:30 UTC | 8h 15m |
| 2026-05-20 | WJA80 | YYC → NRT | May 20, 20:59 UTC | May 21, 18:40 UTC | 21h 42m |
| 2026-05-20 | WJA81 | NRT → YYC | May 20, 09:55 UTC | May 20, 18:10 UTC | 8h 15m |
| 2026-05-20 | WJA81 | NRT → YYC | May 20, 09:52 UTC | May 21, 08:10 UTC | 22h 19m |
| 2026-05-19 | WJA80 | YYC → NRT | May 19, 21:15 UTC | May 20, 07:05 UTC | 9h 51m |
| 2026-05-18 | WJA87 | ICN → YYC | May 18, 12:20 UTC | May 18, 22:00 UTC | 9h 39m |
| 2026-05-18 | WJA87 | ICN → YYC | May 18, 12:17 UTC | May 18, 22:05 UTC | 9h 48m |
| 2026-05-17 | WJA86 | YYC → ICN | May 17, 23:20 UTC | May 18, 10:00 UTC | 10h 40m |
| 2026-05-17 | WJA9 | CDG → YYC | May 17, 12:40 UTC | May 17, 21:05 UTC | 8h 25m |
| 2026-05-17 | WJA9 | CDG → YYC | May 17, 12:37 UTC | May 18, 10:10 UTC | 21h 34m |
| 2026-05-17 | WJA10 | YYC → CDG | May 17, 01:25 UTC | May 17, 09:45 UTC | 8h 20m |
| 2026-05-16 | WJA29 | BCN → YYC | May 16, 13:15 UTC | May 16, 22:45 UTC | 9h 30m |
| 2026-05-16 | WJA28 | YYC → BCN | May 16, 01:20 UTC | May 16, 10:20 UTC | 9h 1m |
| 2026-05-15 | WJA1 | - | May 15, 13:40 UTC | May 15, 21:55 UTC | 8h 14m |
| 2026-05-15 | WJA2 | YYC → LHR | May 15, 03:15 UTC | May 15, 11:10 UTC | 7h 55m |
| 2026-05-14 | WJA9 | CDG → YYC | May 14, 13:15 UTC | May 14, 13:30 UTC | 15m |
| 2026-05-14 | WJA9 | CDG → YYC | May 14, 13:15 UTC | May 15, 11:10 UTC | 21h 56m |
| 2026-05-14 | WJA10 | YYC → CDG | May 14, 02:35 UTC | May 14, 10:25 UTC | 7h 50m |
| 2026-05-13 | WJA29 | BCN → YYC | May 13, 13:31 UTC | May 13, 23:15 UTC | 9h 45m |
| 2026-05-13 | WJA28 | YYC → BCN | May 13, 01:15 UTC | May 13, 23:20 UTC | 22h 6m |
| 2026-05-12 | WJA17 | EDI → YYZ | May 12, 12:25 UTC | May 12, 13:05 UTC | 40m |
| 2026-05-12 | WJA17 | EDI → YYZ | May 12, 12:25 UTC | May 13, 10:10 UTC | 21h 46m |
| 2026-05-12 | WJA18 | YYC → LHR | May 12, 03:00 UTC | May 12, 10:25 UTC | 7h 25m |
| 2026-05-11 | WJA25 | LGW → YHZ | May 11, 13:50 UTC | May 11, 22:00 UTC | 8h 11m |
| 2026-05-11 | WJA24 | YHZ → LGW | May 11, 02:09 UTC | May 11, 22:00 UTC | 19h 52m |
| 2026-05-10 | WJA4109 | SFO → YYC | May 10, 14:49 UTC | May 10, 15:29 UTC | 40m |
| 2026-05-10 | WJA4109 | SFO → YYC | May 10, 14:49 UTC | May 11, 11:35 UTC | 20h 46m |
| 2026-05-09 | WJA10 | YYC → CDG | May 9, 01:25 UTC | May 9, 09:50 UTC | 8h 25m |
| 2026-05-08 | WJA1 | LHR → YYC | May 8, 13:29 UTC | May 9, 09:50 UTC | 20h 21m |
| 2026-05-08 | WJA2 | YYC → LHR | May 8, 02:49 UTC | May 8, 10:54 UTC | 8h 5m |
| 2026-05-08 | WJA2 | YYC → LHR | May 8, 02:48 UTC | May 9, 01:30 UTC | 22h 42m |
| 2026-05-04 | WJA9 | CDG → YYC | May 4, 13:30 UTC | May 4, 22:15 UTC | 8h 46m |
| 2026-05-04 | WJA10 | YYC → CDG | May 4, 02:15 UTC | May 4, 10:40 UTC | 8h 25m |
| 2026-05-03 | WJA29 | BCN → YYC | May 3, 14:05 UTC | May 3, 23:35 UTC | 9h 30m |
| 2026-05-03 | WJA29 | BCN → YYC | May 3, 14:02 UTC | May 4, 13:30 UTC | 23h 28m |
| 2026-05-03 | WJA28 | YYC → BCN | May 3, 01:30 UTC | May 3, 11:00 UTC | 9h 29m |
| 2026-05-02 | WJA87 | ICN → YYC | May 2, 13:35 UTC | May 2, 23:20 UTC | 9h 45m |
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-GUDH page for operator, model, and routing details .