sensors Mode-S transponder
7C3FFF
ICAO 24-bit transponder address · allocated to Australia
Currently assigned to VH-MXD · CESSNA 560 Citation Ultra · operated by MAXEM AVIATION GROUP PTY LTD
- Hex
- 7C3FFF
- Octal
- 37037777
- Decimal
- 8,142,847
- Country
- AU
- Tail
- VH-MXD
- Type
- C560
- Flights observed
- 19
- Distinct callsigns
- 2
- Country
- AU
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 7C3FFF 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 2 distinct
Recent flights last 19
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-03 | MXD | PER → PER | Jul 3, 08:30 UTC | Jul 3, 19:25 UTC | 10h 55m |
| 2026-06-30 | MXD | KGI → PER | Jun 30, 11:00 UTC | Jun 30, 12:10 UTC | 1h 10m |
| 2026-06-30 | MXD | - | Jun 30, 09:30 UTC | Jun 30, 09:45 UTC | 15m |
| 2026-06-30 | MXD | - | Jun 30, 07:20 UTC | Jun 30, 08:05 UTC | 45m |
| 2026-06-28 | MXD | ADL → PER | Jun 28, 22:55 UTC | Jun 29, 02:09 UTC | 3h 15m |
| 2026-06-28 | MXD | PER → ADL | Jun 28, 18:14 UTC | Jun 28, 20:59 UTC | 2h 45m |
| 2026-06-25 | VHMXD | PER → PER | Jun 25, 01:50 UTC | Jun 25, 10:25 UTC | 8h 35m |
| 2026-06-22 | MXD | PER → PER | Jun 22, 22:15 UTC | Jun 23, 11:19 UTC | 13h 5m |
| 2026-06-14 | MXD | PER → PER | Jun 14, 23:05 UTC | Jun 15, 10:45 UTC | 11h 39m |
| 2026-06-10 | MXD | - | Jun 10, 07:40 UTC | Jun 10, 08:25 UTC | 45m |
| 2026-06-09 | MXD | - | Jun 9, 23:10 UTC | Jun 9, 23:40 UTC | 30m |
| 2026-06-08 | VHMXD | PER → PER | Jun 8, 01:40 UTC | Jun 8, 10:10 UTC | 8h 30m |
| 2026-06-04 | MXD | - | Jun 4, 01:15 UTC | Jun 4, 07:00 UTC | 5h 45m |
| 2026-05-29 | MXD | PER → PER | May 29, 07:55 UTC | May 29, 16:55 UTC | 9h 0m |
| 2026-05-17 | MXD | PER → PER | May 17, 23:20 UTC | May 18, 10:55 UTC | 11h 35m |
| 2026-05-14 | MXD | - | May 14, 02:00 UTC | May 14, 07:30 UTC | 5h 30m |
| 2026-05-13 | MXD | - | May 13, 00:50 UTC | May 13, 06:15 UTC | 5h 25m |
| 2026-05-09 | MXD | ADL → PER | May 9, 01:35 UTC | May 9, 04:40 UTC | 3h 5m |
| 2026-05-08 | MXD | PER → ADL | May 8, 20:35 UTC | May 8, 23:50 UTC | 3h 15m |
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-MXD page for operator, model, and routing details .