sensors Mode-S transponder
4242F4
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to VP-BBS · BOEING 787-8 Dreamliner
- Hex
- 4242F4
- Octal
- 20441364
- Decimal
- 4,342,516
- Country
- GB
- Tail
- VP-BBS
- Type
- B788
- Flights observed
- 104
- Distinct callsigns
- 14
- Country
- GB
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 4242F4 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AHY075 | Azerbaijan Airlines | 18 | 2026-05-30 |
| AHY008 | - | 15 | 2026-05-30 |
| AHY007 | - | 15 | 2026-05-30 |
| AHY077 | Azerbaijan Airlines | 13 | 2026-06-01 |
| AHY067 | Azerbaijan Airlines | 8 | 2026-06-02 |
| AHY078 | Azerbaijan Airlines | 7 | 2026-06-01 |
| AHY021 | Azerbaijan Airlines | 7 | 2026-05-27 |
| AHY076 | Azerbaijan Airlines | 6 | 2026-05-27 |
| AHY068 | Azerbaijan Airlines | 5 | 2026-06-02 |
| AHY022 | Azerbaijan Airlines | 5 | 2026-05-28 |
| AHY121 | Azerbaijan Airlines | 2 | 2026-05-25 |
| AHY122 | Azerbaijan Airlines | 1 | 2026-05-25 |
| AHY108 | Azerbaijan Airlines | 1 | 2026-04-24 |
| AHY107 | Azerbaijan Airlines | 1 | 2026-04-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | AHY068 | PEK → GYD | Jun 2, 18:30 UTC | Jun 2, 18:50 UTC | 20m |
| 2026-06-02 | AHY067 | GYD → PEK | Jun 2, 14:45 UTC | Jun 2, 15:10 UTC | 25m |
| 2026-06-01 | AHY078 | IST → GYD | Jun 1, 20:20 UTC | Jun 2, 11:55 UTC | 15h 35m |
| 2026-06-01 | AHY077 | GYD → IST | Jun 1, 18:25 UTC | Jun 1, 18:45 UTC | 20m |
| 2026-06-01 | AHY077 | GYD → IST | Jun 1, 16:25 UTC | Jun 1, 17:45 UTC | 1h 20m |
| 2026-05-31 | AHY077 | GYD → IST | May 31, 22:25 UTC | Jun 1, 17:45 UTC | 19h 20m |
| 2026-05-31 | AHY067 | GYD → PEK | May 31, 12:10 UTC | May 31, 22:35 UTC | 10h 25m |
| 2026-05-30 | AHY008 | - | May 30, 23:05 UTC | May 31, 22:35 UTC | 23h 30m |
| 2026-05-30 | AHY008 | - | May 30, 21:45 UTC | May 31, 12:20 UTC | 14h 35m |
| 2026-05-30 | AHY007 | - | May 30, 09:15 UTC | May 30, 19:50 UTC | 10h 35m |
| 2026-05-30 | AHY075 | GYD → IST | May 30, 06:50 UTC | May 30, 07:15 UTC | 25m |
| 2026-05-29 | AHY075 | GYD → IST | May 29, 22:40 UTC | May 30, 06:15 UTC | 7h 35m |
| 2026-05-29 | AHY067 | GYD → PEK | May 29, 14:55 UTC | May 29, 15:20 UTC | 25m |
| 2026-05-28 | AHY022 | TLV → GYD | May 28, 10:10 UTC | May 28, 12:10 UTC | 2h 0m |
| 2026-05-27 | AHY021 | GYD → TLV | May 27, 20:10 UTC | May 28, 08:35 UTC | 12h 25m |
| 2026-05-27 | AHY077 | GYD → IST | May 27, 18:15 UTC | May 27, 18:35 UTC | 20m |
| 2026-05-27 | AHY076 | IST → GYD | May 27, 10:30 UTC | May 27, 17:35 UTC | 7h 5m |
| 2026-05-27 | AHY075 | GYD → IST | May 27, 07:55 UTC | May 27, 08:05 UTC | 10m |
| 2026-05-26 | AHY068 | PEK → GYD | May 26, 18:34 UTC | May 26, 22:54 UTC | 4h 20m |
| 2026-05-26 | AHY067 | GYD → PEK | May 26, 15:09 UTC | May 26, 15:29 UTC | 20m |
| 2026-05-25 | AHY078 | IST → GYD | May 25, 20:34 UTC | May 25, 22:30 UTC | 1h 55m |
| 2026-05-25 | AHY077 | GYD → IST | May 25, 16:40 UTC | May 25, 17:55 UTC | 1h 15m |
| 2026-05-25 | AHY122 | KVD → LED | May 25, 11:00 UTC | May 25, 13:10 UTC | 2h 10m |
| 2026-05-25 | AHY121 | LED → KVD | May 25, 06:40 UTC | May 25, 09:15 UTC | 2h 35m |
| 2026-05-24 | AHY121 | LED → KVD | May 24, 12:10 UTC | May 25, 09:15 UTC | 21h 5m |
| 2026-05-23 | AHY008 | - | May 23, 21:30 UTC | May 24, 02:00 UTC | 4h 30m |
| 2026-05-23 | AHY007 | - | May 23, 09:25 UTC | May 23, 19:30 UTC | 10h 5m |
| 2026-05-23 | AHY075 | GYD → IST | May 23, 07:00 UTC | May 23, 07:15 UTC | 15m |
| 2026-05-22 | AHY075 | GYD → IST | May 22, 11:05 UTC | May 23, 06:25 UTC | 19h 20m |
| 2026-05-22 | AHY075 | GYD → IST | May 22, 10:20 UTC | May 23, 06:25 UTC | 20h 5m |
| 2026-05-22 | AHY075 | GYD → IST | May 22, 07:15 UTC | May 22, 07:25 UTC | 10m |
| 2026-05-22 | AHY075 | GYD → IST | May 22, 05:25 UTC | May 22, 06:35 UTC | 1h 10m |
| 2026-05-21 | AHY078 | IST → GYD | May 21, 20:25 UTC | May 21, 22:20 UTC | 1h 55m |
| 2026-05-21 | AHY077 | GYD → IST | May 21, 18:10 UTC | May 21, 18:20 UTC | 10m |
| 2026-05-21 | AHY076 | IST → GYD | May 21, 10:55 UTC | May 21, 17:30 UTC | 6h 35m |
| 2026-05-21 | AHY075 | GYD → IST | May 21, 08:05 UTC | May 21, 08:15 UTC | 10m |
| 2026-05-21 | AHY075 | GYD → IST | May 21, 06:10 UTC | May 21, 07:20 UTC | 1h 10m |
| 2026-05-20 | AHY078 | IST → GYD | May 20, 20:20 UTC | May 20, 22:15 UTC | 1h 55m |
| 2026-05-20 | AHY077 | GYD → IST | May 20, 18:15 UTC | May 20, 18:25 UTC | 10m |
| 2026-05-20 | AHY077 | GYD → IST | May 20, 10:35 UTC | May 20, 17:40 UTC | 7h 5m |
| 2026-05-20 | AHY075 | GYD → IST | May 20, 07:50 UTC | May 20, 08:05 UTC | 15m |
| 2026-05-19 | AHY008 | - | May 19, 21:40 UTC | May 20, 07:15 UTC | 9h 36m |
| 2026-05-19 | AHY007 | - | May 19, 09:25 UTC | May 19, 20:00 UTC | 10h 35m |
| 2026-05-19 | AHY075 | GYD → IST | May 19, 05:05 UTC | May 19, 06:20 UTC | 1h 15m |
| 2026-05-18 | AHY078 | IST → GYD | May 18, 20:45 UTC | May 18, 22:40 UTC | 1h 55m |
| 2026-05-18 | AHY077 | GYD → IST | May 18, 16:50 UTC | May 18, 18:05 UTC | 1h 15m |
| 2026-05-17 | AHY022 | TLV → GYD | May 17, 09:45 UTC | May 17, 11:55 UTC | 2h 10m |
| 2026-05-16 | AHY008 | LHR → TLV | May 16, 21:25 UTC | May 17, 08:05 UTC | 10h 40m |
| 2026-05-16 | AHY007 | - | May 16, 10:55 UTC | May 16, 19:20 UTC | 8h 25m |
| 2026-05-15 | AHY075 | GYD → IST | May 15, 12:20 UTC | May 16, 06:25 UTC | 18h 5m |
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 VP-BBS page for operator, model, and routing details .