sensors Mode-S transponder
507C55
ICAO 24-bit transponder address · allocated to Uzbekistan
Currently assigned to UK-78705 · BOEING 787-8 Dreamliner
- Hex
- 507C55
- Octal
- 24076125
- Decimal
- 5,274,709
- Country
- UZ
- Tail
- UK-78705
- Type
- B788
- Flights observed
- 180
- Distinct callsigns
- 20
- Country
- UZ
- Last broadcast
- 15h ago
Last known position
Country allocation
The ICAO 24-bit address 507C55 falls within the block assigned to Uzbekistan (UZ) by ICAO Annex 10, Volume III. Every aircraft registered in Uzbekistan 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| UZB231 | - | 21 | 2026-07-01 |
| UZB273 | Uzbekistan Airways | 19 | 2026-07-06 |
| UZB232 | - | 16 | 2026-07-02 |
| UZB101 | - | 12 | 2026-07-12 |
| UZB271 | - | 10 | 2026-07-11 |
| UZB274 | - | 8 | 2026-07-03 |
| UZB102 | - | 8 | 2026-07-07 |
| UZB554 | - | 6 | 2026-07-09 |
| UZB553 | - | 6 | 2026-07-08 |
| UZB252 | Uzbekistan Airways | 5 | 2026-04-21 |
| UZB634 | Uzbekistan Airways | 4 | 2026-06-11 |
| UZB601 | Uzbekistan Airways | 4 | 2026-06-26 |
| UZB566 | - | 4 | 2026-04-26 |
| UZB511 | - | 4 | 2026-06-18 |
| UZB505 | - | 4 | 2026-07-09 |
| UZB272 | - | 4 | 2026-07-11 |
| UZB251 | Uzbekistan Airways | 4 | 2026-04-21 |
| UZB565 | - | 3 | 2026-04-25 |
| UZB528 | Uzbekistan Airways | 3 | 2026-05-22 |
| UZB506 | - | 3 | 2026-07-10 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | UZB3224 | - | Jul 13, 14:20 UTC | Jul 13, 16:05 UTC | 1h 45m |
| 2026-07-12 | UZB3223 | - | Jul 12, 17:20 UTC | Jul 13, 11:55 UTC | 18h 35m |
| 2026-07-12 | UZB101 | - | Jul 12, 07:10 UTC | Jul 12, 14:25 UTC | 7h 15m |
| 2026-07-11 | UZB272 | - | Jul 11, 11:20 UTC | Jul 12, 07:25 UTC | 20h 5m |
| 2026-07-11 | UZB272 | - | Jul 11, 09:55 UTC | Jul 12, 07:25 UTC | 21h 30m |
| 2026-07-11 | UZB271 | - | Jul 11, 05:20 UTC | Jul 11, 07:40 UTC | 2h 20m |
| 2026-07-10 | UZB506 | - | Jul 10, 02:30 UTC | Jul 10, 02:45 UTC | 15m |
| 2026-07-09 | UZB505 | - | Jul 9, 23:20 UTC | Jul 9, 23:30 UTC | 10m |
| 2026-07-09 | UZB554 | - | Jul 9, 05:35 UTC | Jul 9, 10:25 UTC | 4h 50m |
| 2026-07-08 | UZB553 | - | Jul 8, 14:25 UTC | Jul 9, 03:45 UTC | 13h 20m |
| 2026-07-07 | UZB102 | - | Jul 7, 17:25 UTC | Jul 8, 12:10 UTC | 18h 45m |
| 2026-07-06 | UZB101 | - | Jul 6, 19:20 UTC | Jul 7, 13:40 UTC | 18h 20m |
| 2026-07-06 | UZB101 | - | Jul 6, 18:55 UTC | Jul 7, 13:40 UTC | 18h 45m |
| 2026-07-06 | UZB273 | TAS → IST | Jul 6, 01:35 UTC | Jul 6, 16:50 UTC | 15h 15m |
| 2026-07-05 | UZB273 | TAS → IST | Jul 5, 17:20 UTC | Jul 6, 16:50 UTC | 23h 30m |
| 2026-07-05 | UZB101 | - | Jul 5, 07:20 UTC | Jul 5, 14:15 UTC | 6h 55m |
| 2026-07-04 | UZB424 | - | Jul 4, 08:20 UTC | Jul 4, 08:55 UTC | 35m |
| 2026-07-03 | UZB274 | - | Jul 3, 19:25 UTC | Jul 4, 06:50 UTC | 11h 25m |
| 2026-07-03 | UZB273 | TAS → IST | Jul 3, 01:50 UTC | Jul 3, 16:55 UTC | 15h 5m |
| 2026-07-02 | UZB505 | - | Jul 2, 22:55 UTC | Jul 2, 23:05 UTC | 10m |
| 2026-07-02 | UZB232 | - | Jul 2, 10:20 UTC | Jul 2, 13:40 UTC | 3h 20m |
| 2026-07-01 | UZB231 | - | Jul 1, 14:20 UTC | Jul 2, 07:25 UTC | 17h 5m |
| 2026-06-30 | UZB202 | - | Jun 30, 16:30 UTC | Jul 1, 11:35 UTC | 19h 5m |
| 2026-06-30 | UZB201 | - | Jun 30, 13:45 UTC | Jun 30, 14:10 UTC | 25m |
| 2026-06-29 | UZB201 | - | Jun 29, 19:29 UTC | Jun 30, 13:40 UTC | 18h 11m |
| 2026-06-28 | UZB273 | TAS → IST | Jun 28, 23:20 UTC | Jun 29, 17:10 UTC | 17h 50m |
| 2026-06-28 | UZB273 | TAS → IST | Jun 28, 17:19 UTC | Jun 29, 17:10 UTC | 23h 50m |
| 2026-06-28 | UZB102 | - | Jun 28, 17:04 UTC | Jun 29, 15:14 UTC | 22h 10m |
| 2026-06-28 | UZB101 | - | Jun 28, 07:05 UTC | Jun 28, 14:14 UTC | 7h 10m |
| 2026-06-27 | UZB101 | - | Jun 27, 09:19 UTC | Jun 28, 08:05 UTC | 22h 45m |
| 2026-06-27 | UZB334 | - | Jun 27, 08:55 UTC | Jun 28, 07:14 UTC | 22h 20m |
| 2026-06-26 | UZB601 | TAS → DME | Jun 26, 17:15 UTC | Jun 27, 06:09 UTC | 12h 55m |
| 2026-06-26 | UZB601 | TAS → DME | Jun 26, 05:24 UTC | Jun 27, 04:05 UTC | 22h 40m |
| 2026-06-25 | UZB232 | - | Jun 25, 11:19 UTC | Jun 26, 05:44 UTC | 18h 25m |
| 2026-06-25 | UZB232 | - | Jun 25, 10:09 UTC | Jun 26, 05:44 UTC | 19h 35m |
| 2026-06-24 | UZB231 | - | Jun 24, 13:20 UTC | Jun 25, 07:45 UTC | 18h 25m |
| 2026-06-24 | UZB231 | - | Jun 24, 12:09 UTC | Jun 25, 07:45 UTC | 19h 35m |
| 2026-06-23 | UZB3223 | - | Jun 23, 19:29 UTC | Jun 24, 10:10 UTC | 14h 40m |
| 2026-06-23 | UZB273 | TAS → IST | Jun 23, 02:09 UTC | Jun 23, 17:15 UTC | 15h 5m |
| 2026-06-22 | UZB505 | - | Jun 22, 22:40 UTC | Jun 22, 22:49 UTC | 10m |
| 2026-06-22 | UZB554 | - | Jun 22, 04:09 UTC | Jun 22, 09:04 UTC | 4h 55m |
| 2026-06-21 | UZB553 | - | Jun 21, 09:49 UTC | Jun 22, 01:55 UTC | 16h 5m |
| 2026-06-21 | UZB271 | - | Jun 21, 05:10 UTC | Jun 21, 07:40 UTC | 2h 30m |
| 2026-06-20 | UZB271 | - | Jun 20, 11:20 UTC | Jun 21, 07:40 UTC | 20h 20m |
| 2026-06-20 | UZB271 | - | Jun 20, 09:54 UTC | Jun 21, 07:40 UTC | 21h 45m |
| 2026-06-19 | UZB271 | - | Jun 19, 20:14 UTC | Jun 20, 07:39 UTC | 11h 25m |
| 2026-06-19 | UZB273 | TAS → IST | Jun 19, 01:29 UTC | Jun 19, 17:55 UTC | 16h 25m |
| 2026-06-18 | UZB511 | - | Jun 18, 23:10 UTC | Jun 18, 23:30 UTC | 20m |
| 2026-06-18 | UZB232 | - | Jun 18, 10:20 UTC | Jun 18, 12:05 UTC | 1h 45m |
| 2026-06-17 | UZB3224 | AYT → TAS | Jun 17, 14:50 UTC | Jun 18, 07:45 UTC | 16h 55m |
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 UK-78705 page for operator, model, and routing details .