sensors Mode-S transponder
4D24EF
ICAO 24-bit transponder address
Currently assigned to 9H-BCT · GULFSTREAM G650
- Hex
- 4D24EF
- Octal
- 23222357
- Decimal
- 5,055,727
- Tail
- 9H-BCT
- Type
- GLF6
- Flights observed
- 25
- Distinct callsigns
- 1
- Country
- -
- Last broadcast
- 10d ago
Last known position
Callsign history 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| TYJ535 | - | 25 | 2026-07-26 |
Recent flights last 25
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | TYJ535 | JAH → NCE | Jul 26, 07:45 UTC | Jul 26, 08:15 UTC | 30m |
| 2026-07-23 | TYJ535 | - | Jul 23, 09:50 UTC | Jul 23, 10:20 UTC | 30m |
| 2026-07-21 | TYJ535 | - | Jul 21, 20:35 UTC | Jul 21, 22:00 UTC | 1h 25m |
| 2026-07-19 | TYJ535 | IBZ → LTN | Jul 19, 06:25 UTC | Jul 19, 08:10 UTC | 1h 45m |
| 2026-07-19 | TYJ535 | NCE → IBZ | Jul 19, 04:25 UTC | Jul 19, 05:30 UTC | 1h 5m |
| 2026-07-18 | TYJ535 | - | Jul 18, 11:55 UTC | Jul 18, 13:30 UTC | 1h 35m |
| 2026-07-16 | TYJ535 | - | Jul 16, 21:30 UTC | Jul 17, 06:29 UTC | 9h 0m |
| 2026-07-13 | TYJ535 | - | Jul 13, 06:20 UTC | Jul 13, 16:25 UTC | 10h 5m |
| 2026-07-11 | TYJ535 | - | Jul 11, 20:35 UTC | Jul 11, 21:20 UTC | 45m |
| 2026-07-10 | TYJ535 | - | Jul 10, 11:45 UTC | Jul 10, 13:35 UTC | 1h 50m |
| 2026-07-06 | TYJ535 | - | Jul 6, 16:15 UTC | Jul 6, 16:55 UTC | 40m |
| 2026-06-28 | TYJ535 | NCE → GVA | Jun 28, 12:05 UTC | Jun 28, 12:44 UTC | 40m |
| 2026-06-28 | TYJ535 | - | Jun 28, 09:30 UTC | Jun 28, 11:00 UTC | 1h 30m |
| 2026-06-25 | TYJ535 | - | Jun 25, 12:15 UTC | Jun 25, 13:55 UTC | 1h 40m |
| 2026-06-24 | TYJ535 | NHT → NCE | Jun 24, 18:50 UTC | Jun 24, 20:24 UTC | 1h 35m |
| 2026-06-23 | TYJ535 | - | Jun 23, 17:34 UTC | Jun 23, 19:00 UTC | 1h 25m |
| 2026-06-23 | TYJ535 | ZRH → NCE | Jun 23, 15:24 UTC | Jun 23, 16:14 UTC | 50m |
| 2026-06-23 | TYJ535 | - | Jun 23, 07:29 UTC | Jun 23, 08:45 UTC | 1h 15m |
| 2026-06-22 | TYJ535 | NHT → NCE | Jun 22, 12:10 UTC | Jun 22, 13:44 UTC | 1h 35m |
| 2026-06-22 | TYJ535 | NCE → NHT | Jun 22, 08:15 UTC | Jun 22, 09:45 UTC | 1h 30m |
| 2026-06-21 | TYJ535 | - | Jun 21, 12:24 UTC | Jun 21, 13:00 UTC | 35m |
| 2026-06-13 | TYJ535 | - | Jun 13, 07:40 UTC | Jun 13, 08:00 UTC | 20m |
| 2026-06-12 | TYJ535 | ZRH → NCE | Jun 12, 16:40 UTC | Jun 12, 17:30 UTC | 50m |
| 2026-06-10 | TYJ535 | - | Jun 10, 07:40 UTC | Jun 10, 08:30 UTC | 50m |
| 2026-06-08 | TYJ535 | - | Jun 8, 21:45 UTC | Jun 9, 03:35 UTC | 5h 50m |
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 9H-BCT page for operator, model, and routing details .