sensors Mode-S transponder
468D03
ICAO 24-bit transponder address · allocated to Greece
Currently assigned to SX-CHC · GULFSTREAM 5
- Hex
- 468D03
- Octal
- 21506403
- Decimal
- 4,623,619
- Country
- GR
- Tail
- SX-CHC
- Type
- GLF5
- Flights observed
- 39
- Distinct callsigns
- 1
- Country
- GR
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 468D03 falls within the block assigned to Greece (GR) by ICAO Annex 10, Volume III. Every aircraft registered in Greece 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 |
|---|---|---|---|
| GNJ29 | - | 39 | 2026-07-12 |
Recent flights last 39
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-12 | GNJ29 | NCE → LBG | Jul 12, 15:01 UTC | Jul 12, 16:10 UTC | 1h 10m |
| 2026-07-12 | GNJ29 | - | Jul 12, 13:15 UTC | Jul 12, 14:01 UTC | 45m |
| 2026-07-12 | GNJ29 | - | Jul 12, 10:30 UTC | Jul 12, 11:15 UTC | 45m |
| 2026-07-10 | GNJ29 | PRG → LBG | Jul 10, 10:25 UTC | Jul 10, 11:45 UTC | 1h 20m |
| 2026-07-08 | GNJ29 | VIE → PRG | Jul 8, 12:40 UTC | Jul 8, 13:15 UTC | 35m |
| 2026-07-07 | GNJ29 | - | Jul 7, 16:10 UTC | Jul 7, 17:50 UTC | 1h 40m |
| 2026-07-07 | GNJ29 | ZRH → FAB | Jul 7, 13:00 UTC | Jul 7, 14:35 UTC | 1h 35m |
| 2026-07-07 | GNJ29 | VIE → ZRH | Jul 7, 10:05 UTC | Jul 7, 11:00 UTC | 55m |
| 2026-07-06 | GNJ29 | ATH → VIE | Jul 6, 05:45 UTC | Jul 6, 13:20 UTC | 7h 35m |
| 2026-06-30 | GNJ29 | NCE → ATH | Jun 30, 17:35 UTC | Jun 30, 19:35 UTC | 2h 0m |
| 2026-06-28 | GNJ29 | ATH → NCE | Jun 28, 14:39 UTC | Jun 28, 16:39 UTC | 2h 0m |
| 2026-06-26 | GNJ29 | - | Jun 26, 16:44 UTC | Jun 26, 19:24 UTC | 2h 40m |
| 2026-06-26 | GNJ29 | BER → LBG | Jun 26, 09:39 UTC | Jun 26, 11:05 UTC | 1h 25m |
| 2026-06-23 | GNJ29 | BRU → BER | Jun 23, 13:39 UTC | Jun 23, 14:39 UTC | 1h 0m |
| 2026-06-22 | GNJ29 | - | Jun 22, 11:39 UTC | Jun 22, 18:15 UTC | 6h 35m |
| 2026-06-21 | GNJ29 | - | Jun 21, 15:49 UTC | Jun 21, 20:14 UTC | 4h 25m |
| 2026-06-20 | GNJ29 | - | Jun 20, 20:09 UTC | Jun 20, 20:45 UTC | 35m |
| 2026-06-20 | GNJ29 | - | Jun 20, 17:10 UTC | Jun 20, 19:09 UTC | 2h 0m |
| 2026-06-15 | GNJ29 | - | Jun 15, 15:55 UTC | Jun 15, 16:19 UTC | 25m |
| 2026-06-05 | GNJ29 | - | Jun 5, 13:55 UTC | Jun 5, 16:30 UTC | 2h 35m |
| 2026-06-04 | GNJ29 | MAD → LBG | Jun 4, 10:10 UTC | Jun 4, 11:40 UTC | 1h 30m |
| 2026-06-02 | GNJ29 | - | Jun 2, 20:00 UTC | Jun 2, 21:45 UTC | 1h 45m |
| 2026-06-02 | GNJ29 | - | Jun 2, 07:40 UTC | Jun 2, 08:15 UTC | 35m |
| 2026-05-31 | GNJ29 | ATH → LBG | May 31, 12:00 UTC | May 31, 14:55 UTC | 2h 55m |
| 2026-05-27 | GNJ29 | - | May 27, 17:50 UTC | May 27, 19:45 UTC | 1h 55m |
| 2026-05-22 | GNJ29 | - | May 22, 09:20 UTC | May 22, 10:10 UTC | 50m |
| 2026-05-19 | GNJ29 | - | May 19, 13:45 UTC | May 19, 15:50 UTC | 2h 5m |
| 2026-04-19 | GNJ29 | ATH → BSL | Apr 19, 13:10 UTC | Apr 19, 15:30 UTC | 2h 20m |
| 2026-04-17 | GNJ29 | - | Apr 17, 17:25 UTC | Apr 17, 17:30 UTC | 5m |
| 2026-04-17 | GNJ29 | - | Apr 17, 15:20 UTC | Apr 17, 17:15 UTC | 1h 55m |
| 2026-04-17 | GNJ29 | - | Apr 17, 14:55 UTC | Apr 17, 15:15 UTC | 20m |
| 2026-04-16 | GNJ29 | - | Apr 16, 15:15 UTC | Apr 16, 16:40 UTC | 1h 25m |
| 2026-04-16 | GNJ29 | - | Apr 16, 14:45 UTC | Apr 16, 15:10 UTC | 25m |
| 2026-04-16 | GNJ29 | - | Apr 16, 07:09 UTC | Apr 16, 07:34 UTC | 25m |
| 2026-04-16 | GNJ29 | - | Apr 16, 05:54 UTC | Apr 16, 07:05 UTC | 1h 10m |
| 2026-04-14 | GNJ29 | - | Apr 14, 17:20 UTC | Apr 14, 18:00 UTC | 40m |
| 2026-04-14 | GNJ29 | - | Apr 14, 09:10 UTC | Apr 14, 09:45 UTC | 35m |
| 2026-04-14 | GNJ29 | - | Apr 14, 07:10 UTC | Apr 14, 09:05 UTC | 1h 55m |
| 2026-04-14 | GNJ29 | - | Apr 14, 06:35 UTC | Apr 14, 07:10 UTC | 35m |
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 SX-CHC page for operator, model, and routing details .