sensors Mode-S transponder
7C28AD
ICAO 24-bit transponder address · allocated to Australia
Currently assigned to VH-IBJ · CHRISTEN Husky · operated by PUDNEY, Daryl Joseph
- Hex
- 7C28AD
- Octal
- 37024255
- Decimal
- 8,136,877
- Country
- AU
- Tail
- VH-IBJ
- Type
- HUSK
- Flights observed
- 32
- Distinct callsigns
- 1
- Country
- AU
- Last broadcast
- 18d ago
Last known position
Country allocation
The ICAO 24-bit address 7C28AD falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| IBJ | - | 32 | 2026-06-29 |
Recent flights last 32
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-29 | IBJ | - | Jun 29, 06:59 UTC | Jun 29, 07:09 UTC | 10m |
| 2026-06-28 | IBJ | - | Jun 28, 20:39 UTC | Jun 28, 20:50 UTC | 10m |
| 2026-06-26 | IBJ | - | Jun 26, 04:20 UTC | Jun 26, 04:45 UTC | 25m |
| 2026-06-25 | IBJ | - | Jun 25, 21:40 UTC | Jun 25, 21:59 UTC | 20m |
| 2026-06-24 | IBJ | - | Jun 24, 20:44 UTC | Jun 24, 21:00 UTC | 15m |
| 2026-06-24 | IBJ | - | Jun 24, 06:45 UTC | Jun 24, 07:05 UTC | 20m |
| 2026-06-22 | IBJ | - | Jun 22, 02:25 UTC | Jun 22, 02:34 UTC | 10m |
| 2026-06-14 | IBJ | - | Jun 14, 20:30 UTC | Jun 14, 20:40 UTC | 10m |
| 2026-06-12 | IBJ | - | Jun 12, 06:10 UTC | Jun 12, 06:25 UTC | 15m |
| 2026-06-11 | IBJ | - | Jun 11, 20:40 UTC | Jun 11, 20:55 UTC | 15m |
| 2026-06-11 | IBJ | - | Jun 11, 06:05 UTC | Jun 11, 06:15 UTC | 10m |
| 2026-06-10 | IBJ | - | Jun 10, 20:35 UTC | Jun 10, 20:50 UTC | 15m |
| 2026-06-08 | IBJ | - | Jun 8, 20:25 UTC | Jun 8, 20:40 UTC | 15m |
| 2026-06-06 | IBJ | - | Jun 6, 03:50 UTC | Jun 6, 04:10 UTC | 20m |
| 2026-06-04 | IBJ | - | Jun 4, 21:15 UTC | Jun 4, 21:45 UTC | 30m |
| 2026-06-03 | IBJ | - | Jun 3, 06:30 UTC | Jun 3, 06:55 UTC | 25m |
| 2026-06-02 | IBJ | - | Jun 2, 20:45 UTC | Jun 2, 20:55 UTC | 10m |
| 2026-06-01 | IBJ | - | Jun 1, 06:50 UTC | Jun 1, 07:05 UTC | 15m |
| 2026-05-31 | IBJ | - | May 31, 20:30 UTC | May 31, 20:45 UTC | 15m |
| 2026-05-29 | IBJ | - | May 29, 04:25 UTC | May 29, 04:45 UTC | 20m |
| 2026-05-28 | IBJ | - | May 28, 08:10 UTC | May 28, 08:40 UTC | 30m |
| 2026-05-27 | IBJ | - | May 27, 20:20 UTC | May 27, 20:35 UTC | 15m |
| 2026-05-27 | IBJ | - | May 27, 04:34 UTC | May 27, 05:09 UTC | 35m |
| 2026-05-25 | IBJ | - | May 25, 02:20 UTC | May 25, 02:50 UTC | 30m |
| 2026-04-20 | IBJ | - | Apr 20, 02:50 UTC | Apr 20, 03:35 UTC | 45m |
| 2026-04-17 | IBJ | - | Apr 17, 07:25 UTC | Apr 17, 07:40 UTC | 15m |
| 2026-04-16 | IBJ | - | Apr 16, 20:40 UTC | Apr 16, 20:55 UTC | 15m |
| 2026-04-16 | IBJ | - | Apr 16, 06:55 UTC | Apr 16, 07:05 UTC | 10m |
| 2026-04-15 | IBJ | - | Apr 15, 20:40 UTC | Apr 15, 21:00 UTC | 20m |
| 2026-04-15 | IBJ | - | Apr 15, 07:01 UTC | Apr 15, 07:20 UTC | 20m |
| 2026-04-15 | IBJ | - | Apr 15, 05:40 UTC | Apr 15, 06:55 UTC | 1h 15m |
| 2026-04-14 | IBJ | - | Apr 14, 21:05 UTC | Apr 14, 22:50 UTC | 1h 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 VH-IBJ page for operator, model, and routing details .