sensors Mode-S transponder
424B79
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to M-AMBA · GULFSTREAM G600
- Hex
- 424B79
- Octal
- 20445571
- Decimal
- 4,344,697
- Country
- GB
- Tail
- M-AMBA
- Type
- GA6C
- Flights observed
- 43
- Distinct callsigns
- 1
- Country
- GB
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 424B79 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom 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 |
|---|---|---|---|
| MAMBA | - | 43 | 2026-07-22 |
Recent flights last 43
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-22 | MAMBA | - | Jul 22, 16:30 UTC | Jul 22, 18:00 UTC | 1h 30m |
| 2026-07-21 | MAMBA | - | Jul 21, 16:55 UTC | Jul 21, 18:25 UTC | 1h 30m |
| 2026-07-15 | MAMBA | MAN → FAB | Jul 15, 17:25 UTC | Jul 15, 18:00 UTC | 35m |
| 2026-07-15 | MAMBA | - | Jul 15, 15:25 UTC | Jul 15, 16:35 UTC | 1h 10m |
| 2026-07-13 | MAMBA | - | Jul 13, 07:45 UTC | Jul 13, 10:10 UTC | 2h 25m |
| 2026-07-12 | MAMBA | - | Jul 12, 11:20 UTC | Jul 12, 12:50 UTC | 1h 30m |
| 2026-07-06 | MAMBA | NCL → FAB | Jul 6, 13:35 UTC | Jul 6, 14:30 UTC | 55m |
| 2026-07-06 | MAMBA | BLK → NCL | Jul 6, 11:10 UTC | Jul 6, 11:50 UTC | 40m |
| 2026-07-06 | MAMBA | NCE → BLK | Jul 6, 08:20 UTC | Jul 6, 10:15 UTC | 1h 55m |
| 2026-07-06 | MAMBA | TEB → NCE | Jul 6, 00:20 UTC | Jul 6, 07:00 UTC | 6h 40m |
| 2026-07-03 | MAMBA | - | Jul 3, 14:55 UTC | Jul 3, 15:50 UTC | 55m |
| 2026-06-29 | MAMBA | NCE → PHF | Jun 29, 13:59 UTC | Jun 29, 22:10 UTC | 8h 10m |
| 2026-06-29 | MAMBA | - | Jun 29, 10:59 UTC | Jun 29, 12:34 UTC | 1h 35m |
| 2026-06-29 | MAMBA | - | Jun 29, 08:29 UTC | Jun 29, 09:14 UTC | 45m |
| 2026-06-29 | MAMBA | NCL → BLK | Jun 29, 07:05 UTC | Jun 29, 07:34 UTC | 30m |
| 2026-06-28 | MAMBA | FAB → NCL | Jun 28, 14:09 UTC | Jun 28, 14:59 UTC | 50m |
| 2026-06-26 | MAMBA | NCE → FAB | Jun 26, 12:55 UTC | Jun 26, 14:25 UTC | 1h 30m |
| 2026-06-23 | MAMBA | FAB → NCE | Jun 23, 15:24 UTC | Jun 23, 16:54 UTC | 1h 30m |
| 2026-06-19 | MAMBA | NCE → FAB | Jun 19, 15:09 UTC | Jun 19, 16:34 UTC | 1h 25m |
| 2026-06-13 | MAMBA | - | Jun 13, 11:15 UTC | Jun 13, 11:55 UTC | 40m |
| 2026-06-12 | MAMBA | NCE → GVA | Jun 12, 16:30 UTC | Jun 12, 17:05 UTC | 35m |
| 2026-06-12 | MAMBA | - | Jun 12, 13:05 UTC | Jun 12, 14:35 UTC | 1h 30m |
| 2026-05-14 | MAMBA | - | May 14, 13:25 UTC | May 14, 14:50 UTC | 1h 25m |
| 2026-05-12 | MAMBA | - | May 12, 14:55 UTC | May 12, 16:25 UTC | 1h 30m |
| 2026-05-11 | MAMBA | - | May 11, 16:10 UTC | May 11, 17:40 UTC | 1h 30m |
| 2026-05-09 | MAMBA | - | May 9, 18:15 UTC | May 9, 19:49 UTC | 1h 35m |
| 2026-05-09 | MAMBA | NCL → LTN | May 9, 16:45 UTC | May 9, 17:25 UTC | 40m |
| 2026-05-09 | MAMBA | - | May 9, 10:40 UTC | May 9, 11:20 UTC | 40m |
| 2026-05-08 | MAMBA | - | May 8, 09:19 UTC | May 8, 09:44 UTC | 25m |
| 2026-05-08 | MAMBA | RSW → FAB | May 8, 00:34 UTC | May 8, 08:09 UTC | 7h 35m |
| 2026-05-06 | MAMBA | - | May 6, 16:25 UTC | May 6, 16:45 UTC | 20m |
| 2026-05-03 | MAMBA | - | May 3, 12:25 UTC | May 3, 21:14 UTC | 8h 50m |
| 2026-05-01 | MAMBA | NCE → FAB | May 1, 08:00 UTC | May 1, 09:25 UTC | 1h 25m |
| 2026-04-27 | MAMBA | NCL → NCE | Apr 27, 16:15 UTC | Apr 27, 18:10 UTC | 1h 55m |
| 2026-04-27 | MAMBA | NCE → NCL | Apr 27, 09:05 UTC | Apr 27, 11:00 UTC | 1h 55m |
| 2026-04-26 | MAMBA | BOH → NCE | Apr 26, 14:10 UTC | Apr 26, 15:35 UTC | 1h 25m |
| 2026-04-25 | MAMBA | MAN → BOH | Apr 25, 16:00 UTC | Apr 25, 16:35 UTC | 35m |
| 2026-04-25 | MAMBA | - | Apr 25, 08:55 UTC | Apr 25, 09:40 UTC | 45m |
| 2026-04-23 | MAMBA | - | Apr 23, 14:40 UTC | Apr 23, 16:10 UTC | 1h 30m |
| 2026-04-20 | MAMBA | - | Apr 20, 16:55 UTC | Apr 20, 18:25 UTC | 1h 30m |
| 2026-04-20 | MAMBA | - | Apr 20, 14:15 UTC | Apr 20, 15:45 UTC | 1h 30m |
| 2026-04-17 | MAMBA | - | Apr 17, 15:20 UTC | Apr 17, 16:25 UTC | 1h 5m |
| 2026-04-17 | MAMBA | - | Apr 17, 15:00 UTC | Apr 17, 15:15 UTC | 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 M-AMBA page for operator, model, and routing details .