sensors Mode-S transponder
507C43
ICAO 24-bit transponder address · allocated to Uzbekistan
Currently assigned to UK-32020 · AIRBUS A-320
- Hex
- 507C43
- Octal
- 24076103
- Decimal
- 5,274,691
- Country
- UZ
- Tail
- UK-32020
- Type
- A320
- Flights observed
- 78
- Distinct callsigns
- 20
- Country
- UZ
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 507C43 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 |
|---|---|---|---|
| UZB605 | Uzbekistan Airways | 18 | 2026-05-22 |
| UZB275 | Uzbekistan Airways | 14 | 2026-05-22 |
| UZB639 | Uzbekistan Airways | 7 | 2026-05-22 |
| UZB640 | Uzbekistan Airways | 6 | 2026-05-23 |
| UZB709 | Uzbekistan Airways | 4 | 2026-05-13 |
| UZB746 | Uzbekistan Airways | 3 | 2026-05-26 |
| UZB745 | Uzbekistan Airways | 3 | 2026-05-26 |
| UZB710 | Uzbekistan Airways | 3 | 2026-05-14 |
| UZB279 | Uzbekistan Airways | 3 | 2026-05-14 |
| UZB274 | Uzbekistan Airways | 3 | 2026-05-10 |
| UZB667 | Uzbekistan Airways | 2 | 2026-04-29 |
| UZB686 | Uzbekistan Airways | 1 | 2026-05-16 |
| UZB685 | Uzbekistan Airways | 1 | 2026-05-15 |
| UZB668 | Uzbekistan Airways | 1 | 2026-04-13 |
| UZB633 | Uzbekistan Airways | 1 | 2026-05-13 |
| UZB606 | Uzbekistan Airways | 1 | 2026-05-17 |
| UZB428 | - | 1 | 2026-05-29 |
| UZB427 | - | 1 | 2026-05-28 |
| UZB292 | Uzbekistan Airways | 1 | 2026-04-16 |
| UZB291 | Uzbekistan Airways | 1 | 2026-04-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | UZB428 | - | May 29, 00:20 UTC | May 29, 02:30 UTC | 2h 10m |
| 2026-05-28 | UZB427 | - | May 28, 19:55 UTC | May 28, 22:35 UTC | 2h 40m |
| 2026-05-26 | UZB746 | TBS → TAS | May 26, 09:09 UTC | May 26, 09:45 UTC | 35m |
| 2026-05-26 | UZB745 | TAS → TBS | May 26, 05:54 UTC | May 26, 06:25 UTC | 30m |
| 2026-05-23 | UZB640 | LED → SKD | May 23, 11:05 UTC | May 23, 13:10 UTC | 2h 5m |
| 2026-05-22 | UZB639 | SKD → LED | May 22, 23:50 UTC | May 23, 09:30 UTC | 9h 40m |
| 2026-05-22 | UZB605 | SKD → DME | May 22, 12:10 UTC | May 22, 21:50 UTC | 9h 40m |
| 2026-05-22 | UZB275 | SKD → IST | May 22, 10:05 UTC | May 22, 10:20 UTC | 15m |
| 2026-05-22 | UZB275 | SKD → IST | May 22, 00:50 UTC | May 22, 09:10 UTC | 8h 20m |
| 2026-05-21 | UZB605 | SKD → DME | May 21, 04:05 UTC | May 21, 20:45 UTC | 16h 40m |
| 2026-05-20 | UZB276 | IST → SKD | May 20, 17:05 UTC | May 21, 02:15 UTC | 9h 10m |
| 2026-05-20 | UZB275 | SKD → IST | May 20, 14:55 UTC | May 20, 15:05 UTC | 10m |
| 2026-05-20 | UZB275 | SKD → IST | May 20, 05:20 UTC | May 20, 14:05 UTC | 8h 45m |
| 2026-05-19 | UZB640 | LED → SKD | May 19, 17:35 UTC | May 20, 03:25 UTC | 9h 50m |
| 2026-05-19 | UZB639 | SKD → LED | May 19, 13:55 UTC | May 19, 15:20 UTC | 1h 25m |
| 2026-05-18 | UZB639 | SKD → LED | May 18, 22:20 UTC | May 19, 09:30 UTC | 11h 10m |
| 2026-05-18 | UZB605 | SKD → DME | May 18, 11:10 UTC | May 18, 20:10 UTC | 8h 59m |
| 2026-05-18 | UZB275 | SKD → IST | May 18, 08:50 UTC | May 18, 09:05 UTC | 15m |
| 2026-05-17 | UZB606 | DME → SKD | May 17, 22:45 UTC | May 18, 07:50 UTC | 9h 5m |
| 2026-05-17 | UZB605 | SKD → DME | May 17, 18:50 UTC | May 17, 20:15 UTC | 1h 25m |
| 2026-05-16 | UZB686 | AER → TAS | May 16, 10:46 UTC | May 16, 12:01 UTC | 1h 15m |
| 2026-05-15 | UZB685 | TAS → AER | May 15, 11:35 UTC | May 16, 05:20 UTC | 17h 44m |
| 2026-05-14 | UZB279 | UGC → IST | May 14, 12:50 UTC | May 15, 07:15 UTC | 18h 25m |
| 2026-05-14 | UZB710 | MSQ → TAS | May 14, 11:05 UTC | May 15, 07:15 UTC | 20h 10m |
| 2026-05-13 | UZB709 | TAS → MSQ | May 13, 12:50 UTC | May 14, 08:45 UTC | 19h 55m |
| 2026-05-13 | UZB709 | TAS → MSQ | May 13, 11:15 UTC | May 14, 08:45 UTC | 21h 30m |
| 2026-05-13 | UZB633 | TAS → LED | May 13, 06:10 UTC | May 13, 08:25 UTC | 2h 15m |
| 2026-05-12 | UZB746 | TBS → TAS | May 12, 08:00 UTC | May 13, 06:40 UTC | 22h 40m |
| 2026-05-12 | UZB745 | TAS → TBS | May 12, 05:40 UTC | May 12, 06:10 UTC | 30m |
| 2026-05-10 | UZB274 | IST → TAS | May 10, 19:40 UTC | May 10, 20:54 UTC | 1h 15m |
| 2026-05-10 | UZB273 | TAS → IST | May 10, 14:25 UTC | May 10, 16:00 UTC | 1h 35m |
| 2026-05-09 | UZB640 | LED → SKD | May 9, 10:55 UTC | May 9, 12:50 UTC | 1h 55m |
| 2026-05-08 | UZB639 | SKD → LED | May 8, 23:35 UTC | May 9, 09:30 UTC | 9h 55m |
| 2026-05-08 | UZB605 | SKD → DME | May 8, 07:44 UTC | May 8, 21:40 UTC | 13h 55m |
| 2026-05-08 | UZB605 | SKD → DME | May 8, 00:49 UTC | May 8, 21:40 UTC | 20h 50m |
| 2026-05-08 | UZB605 | SKD → DME | May 8, 00:25 UTC | May 8, 21:40 UTC | 21h 15m |
| 2026-05-07 | UZB605 | SKD → DME | May 7, 19:05 UTC | May 7, 20:35 UTC | 1h 30m |
| 2026-05-06 | UZB605 | SKD → DME | May 6, 22:50 UTC | May 7, 20:35 UTC | 21h 45m |
| 2026-05-06 | UZB605 | SKD → DME | May 6, 22:25 UTC | May 7, 20:35 UTC | 22h 10m |
| 2026-05-06 | UZB275 | SKD → IST | May 6, 06:20 UTC | May 6, 20:15 UTC | 13h 54m |
| 2026-05-05 | UZB275 | SKD → IST | May 5, 22:50 UTC | May 6, 20:15 UTC | 21h 24m |
| 2026-05-05 | UZB275 | SKD → IST | May 5, 22:30 UTC | May 6, 20:15 UTC | 21h 44m |
| 2026-05-05 | UZB640 | LED → SKD | May 5, 10:45 UTC | May 5, 20:30 UTC | 9h 45m |
| 2026-05-04 | UZB639 | SKD → LED | May 4, 22:15 UTC | May 5, 08:15 UTC | 10h 0m |
| 2026-05-04 | UZB605 | SKD → DME | May 4, 11:40 UTC | May 4, 20:20 UTC | 8h 41m |
| 2026-05-03 | UZB275 | SKD → IST | May 3, 22:49 UTC | May 4, 07:45 UTC | 8h 55m |
| 2026-05-03 | UZB605 | SKD → DME | May 3, 19:45 UTC | May 3, 21:05 UTC | 1h 20m |
| 2026-05-02 | UZB710 | MSQ → TAS | May 2, 18:35 UTC | May 2, 20:45 UTC | 2h 10m |
| 2026-05-02 | UZB709 | TAS → MSQ | May 2, 14:40 UTC | May 2, 16:40 UTC | 2h 0m |
| 2026-04-29 | UZB667 | TAS → OVB | Apr 29, 16:45 UTC | Apr 29, 20:40 UTC | 3h 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-32020 page for operator, model, and routing details .