sensors Mode-S transponder
4246BA
ICAO 24-bit transponder address · allocated to United Kingdom
- Hex
- 4246BA
- Octal
- 20443272
- Decimal
- 4,343,482
- Country
- GB
- Flights observed
- 43
- Distinct callsigns
- 13
- Country
- GB
- Last broadcast
- Jul 26, 12:10 UTC
Last known position
Country allocation
The ICAO 24-bit address 4246BA 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 13 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AHY077 | Azerbaijan Airlines | 7 | 2026-07-23 |
| AHY075 | Azerbaijan Airlines | 5 | 2026-07-22 |
| AHY023 | Azerbaijan Airlines | 5 | 2026-07-25 |
| AHY078 | Azerbaijan Airlines | 4 | 2026-07-23 |
| AHY025 | Azerbaijan Airlines | 4 | 2026-07-25 |
| AHY076 | Azerbaijan Airlines | 3 | 2026-07-23 |
| AHY036 | Azerbaijan Airlines | 3 | 2026-07-24 |
| AHY026 | Azerbaijan Airlines | 3 | 2026-07-25 |
| AHY024 | Azerbaijan Airlines | 3 | 2026-07-26 |
| AHY8003 | Azerbaijan Airlines | 2 | 2026-07-22 |
| AHY035 | Azerbaijan Airlines | 2 | 2026-07-24 |
| AHY8048 | - | 1 | 2026-07-15 |
| AHY3014 | - | 1 | 2026-06-25 |
Recent flights last 43
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | AHY024 | BJV → GYD | Jul 26, 10:10 UTC | Jul 26, 12:10 UTC | 2h 0m |
| 2026-07-25 | AHY023 | GYD → BJV | Jul 25, 16:55 UTC | Jul 26, 08:45 UTC | 15h 51m |
| 2026-07-25 | AHY023 | GYD → BJV | Jul 25, 08:35 UTC | Jul 26, 08:30 UTC | 23h 56m |
| 2026-07-25 | AHY026 | AYT → GYD | Jul 25, 08:15 UTC | Jul 26, 06:30 UTC | 22h 15m |
| 2026-07-25 | AHY025 | GYD → AYT | Jul 25, 06:25 UTC | Jul 25, 06:50 UTC | 25m |
| 2026-07-24 | AHY036 | MXP → GYD | Jul 24, 10:35 UTC | Jul 25, 05:45 UTC | 19h 10m |
| 2026-07-24 | AHY036 | MXP → GYD | Jul 24, 09:45 UTC | Jul 25, 05:45 UTC | 20h 0m |
| 2026-07-24 | AHY035 | GYD → MXP | Jul 24, 03:45 UTC | Jul 24, 08:05 UTC | 4h 20m |
| 2026-07-23 | AHY078 | IST → GYD | Jul 23, 20:25 UTC | Jul 23, 22:10 UTC | 1h 45m |
| 2026-07-23 | AHY077 | GYD → IST | Jul 23, 16:20 UTC | Jul 23, 18:45 UTC | 2h 25m |
| 2026-07-23 | AHY076 | IST → GYD | Jul 23, 10:55 UTC | Jul 23, 12:40 UTC | 1h 45m |
| 2026-07-22 | AHY075 | GYD → IST | Jul 22, 17:10 UTC | Jul 23, 08:45 UTC | 15h 35m |
| 2026-07-22 | AHY8003 | GYD → ESB | Jul 22, 04:30 UTC | Jul 22, 22:05 UTC | 17h 35m |
| 2026-07-21 | AHY036 | - | Jul 21, 09:50 UTC | Jul 21, 13:20 UTC | 3h 30m |
| 2026-07-21 | AHY035 | GYD → MXP | Jul 21, 03:35 UTC | Jul 21, 08:10 UTC | 4h 35m |
| 2026-07-20 | AHY026 | AYT → GYD | Jul 20, 08:35 UTC | Jul 20, 21:35 UTC | 13h 0m |
| 2026-07-20 | AHY025 | GYD → AYT | Jul 20, 04:40 UTC | Jul 20, 07:00 UTC | 2h 20m |
| 2026-07-19 | AHY025 | GYD → AYT | Jul 19, 10:35 UTC | Jul 20, 07:00 UTC | 20h 25m |
| 2026-07-19 | AHY024 | BJV → GYD | Jul 19, 09:55 UTC | Jul 20, 07:00 UTC | 21h 5m |
| 2026-07-19 | AHY023 | GYD → BJV | Jul 19, 05:50 UTC | Jul 19, 08:20 UTC | 2h 30m |
| 2026-07-18 | AHY078 | IST → GYD | Jul 18, 20:35 UTC | Jul 18, 22:25 UTC | 1h 50m |
| 2026-07-18 | AHY077 | - | Jul 18, 18:10 UTC | Jul 18, 18:35 UTC | 25m |
| 2026-07-18 | AHY077 | - | Jul 18, 08:45 UTC | Jul 18, 17:40 UTC | 8h 55m |
| 2026-07-18 | AHY023 | GYD → BJV | Jul 18, 04:35 UTC | Jul 18, 07:00 UTC | 2h 25m |
| 2026-07-17 | AHY078 | IST → GYD | Jul 17, 22:10 UTC | Jul 17, 22:40 UTC | 30m |
| 2026-07-17 | AHY077 | - | Jul 17, 18:44 UTC | Jul 17, 19:00 UTC | 15m |
| 2026-07-17 | AHY076 | - | Jul 17, 09:20 UTC | Jul 17, 18:05 UTC | 8h 45m |
| 2026-07-17 | AHY075 | - | Jul 17, 07:00 UTC | Jul 17, 07:25 UTC | 25m |
| 2026-07-16 | AHY075 | - | Jul 16, 20:25 UTC | Jul 17, 06:25 UTC | 10h 0m |
| 2026-07-16 | AHY077 | - | Jul 16, 18:19 UTC | Jul 16, 18:44 UTC | 25m |
| 2026-07-16 | AHY076 | - | Jul 16, 10:50 UTC | Jul 16, 17:40 UTC | 6h 50m |
| 2026-07-16 | AHY075 | - | Jul 16, 08:30 UTC | Jul 16, 08:45 UTC | 15m |
| 2026-07-16 | AHY075 | - | Jul 16, 06:20 UTC | Jul 16, 07:50 UTC | 1h 30m |
| 2026-07-15 | AHY8048 | - | Jul 15, 08:05 UTC | Jul 15, 09:00 UTC | 55m |
| 2026-07-14 | AHY8003 | - | Jul 14, 16:50 UTC | Jul 15, 06:35 UTC | 13h 44m |
| 2026-07-13 | AHY026 | - | Jul 13, 08:20 UTC | Jul 13, 10:05 UTC | 1h 45m |
| 2026-07-13 | AHY025 | - | Jul 13, 04:40 UTC | Jul 13, 07:01 UTC | 2h 20m |
| 2026-07-11 | AHY078 | - | Jul 11, 20:30 UTC | Jul 11, 22:15 UTC | 1h 45m |
| 2026-07-11 | AHY077 | - | Jul 11, 18:30 UTC | Jul 11, 18:50 UTC | 20m |
| 2026-07-11 | AHY077 | - | Jul 11, 16:25 UTC | Jul 11, 17:50 UTC | 1h 25m |
| 2026-07-11 | AHY024 | - | Jul 11, 08:50 UTC | Jul 11, 10:50 UTC | 2h 0m |
| 2026-07-11 | AHY023 | - | Jul 11, 04:50 UTC | Jul 11, 07:20 UTC | 2h 30m |
| 2026-06-25 | AHY3014 | - | Jun 25, 08:14 UTC | Jun 25, 13:40 UTC | 5h 25m |
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.