sensors Mode-S transponder
507C89
ICAO 24-bit transponder address · allocated to Uzbekistan
Currently assigned to UK33021 · AIRBUS A-330-200
- Hex
- 507C89
- Octal
- 24076211
- Decimal
- 5,274,761
- Country
- UZ
- Tail
- UK33021
- Type
- A332
- Flights observed
- 76
- Distinct callsigns
- 4
- Country
- UZ
- Last broadcast
- 20h ago
Last known position
Country allocation
The ICAO 24-bit address 507C89 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 4 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| QNT575 | Qanot Sharq | 38 | 2026-05-29 |
| QNT576 | Qanot Sharq | 33 | 2026-05-29 |
| QNT822 | Qanot Sharq | 3 | 2026-04-20 |
| QNT821 | - | 2 | 2026-04-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | QNT576 | IST → TAS | May 29, 13:15 UTC | May 29, 15:10 UTC | 1h 55m |
| 2026-05-29 | QNT575 | TAS → IST | May 29, 10:55 UTC | May 29, 11:30 UTC | 35m |
| 2026-05-28 | QNT576 | IST → TAS | May 28, 19:05 UTC | May 29, 10:20 UTC | 15h 15m |
| 2026-05-28 | QNT575 | TAS → IST | May 28, 17:10 UTC | May 28, 17:30 UTC | 20m |
| 2026-05-28 | QNT575 | TAS → IST | May 28, 15:00 UTC | May 28, 16:30 UTC | 1h 30m |
| 2026-05-27 | QNT576 | IST → TAS | May 27, 12:55 UTC | May 27, 15:00 UTC | 2h 5m |
| 2026-05-26 | QNT575 | TAS → IST | May 26, 14:20 UTC | May 27, 09:35 UTC | 19h 16m |
| 2026-05-26 | QNT576 | IST → TAS | May 26, 13:00 UTC | May 27, 09:35 UTC | 20h 36m |
| 2026-05-25 | QNT576 | IST → TAS | May 25, 19:30 UTC | May 26, 09:45 UTC | 14h 15m |
| 2026-05-25 | QNT575 | TAS → IST | May 25, 17:15 UTC | May 25, 17:25 UTC | 10m |
| 2026-05-25 | QNT575 | TAS → IST | May 25, 15:10 UTC | May 25, 16:30 UTC | 1h 20m |
| 2026-05-24 | QNT576 | IST → TAS | May 24, 12:50 UTC | May 24, 14:50 UTC | 2h 0m |
| 2026-05-24 | QNT575 | TAS → IST | May 24, 10:25 UTC | May 24, 10:35 UTC | 10m |
| 2026-05-23 | QNT576 | IST → TAS | May 23, 19:45 UTC | May 24, 09:45 UTC | 14h 0m |
| 2026-05-23 | QNT576 | IST → TAS | May 23, 03:45 UTC | May 23, 16:40 UTC | 12h 55m |
| 2026-05-23 | QNT575 | TAS → IST | May 23, 01:00 UTC | May 23, 01:10 UTC | 10m |
| 2026-05-21 | QNT576 | IST → TAS | May 21, 19:15 UTC | May 21, 21:15 UTC | 2h 0m |
| 2026-05-21 | QNT575 | TAS → IST | May 21, 16:35 UTC | May 21, 16:45 UTC | 10m |
| 2026-05-21 | QNT575 | TAS → IST | May 21, 14:40 UTC | May 21, 15:55 UTC | 1h 15m |
| 2026-05-20 | QNT575 | TAS → IST | May 20, 18:20 UTC | May 21, 15:55 UTC | 21h 35m |
| 2026-05-20 | QNT575 | TAS → IST | May 20, 17:15 UTC | May 21, 15:55 UTC | 22h 40m |
| 2026-05-20 | QNT576 | IST → TAS | May 20, 16:25 UTC | May 20, 16:35 UTC | 10m |
| 2026-05-19 | QNT575 | TAS → IST | May 19, 16:50 UTC | May 20, 09:45 UTC | 16h 56m |
| 2026-05-19 | QNT576 | IST → TAS | May 19, 16:05 UTC | May 19, 16:15 UTC | 10m |
| 2026-05-19 | QNT575 | TAS → IST | May 19, 13:45 UTC | May 19, 13:55 UTC | 10m |
| 2026-05-19 | QNT575 | TAS → IST | May 19, 11:40 UTC | May 19, 12:55 UTC | 1h 15m |
| 2026-05-16 | QNT575 | TAS → IST | May 16, 20:45 UTC | May 17, 10:35 UTC | 13h 50m |
| 2026-05-16 | QNT576 | IST → TAS | May 16, 19:10 UTC | May 16, 19:20 UTC | 10m |
| 2026-05-16 | QNT575 | TAS → IST | May 16, 14:46 UTC | May 16, 16:00 UTC | 1h 15m |
| 2026-05-15 | QNT576 | IST → TAS | May 15, 13:35 UTC | May 15, 14:40 UTC | 1h 5m |
| 2026-05-15 | QNT576 | IST → TAS | May 15, 12:45 UTC | May 15, 12:55 UTC | 10m |
| 2026-05-14 | QNT575 | TAS → IST | May 14, 20:30 UTC | May 15, 09:35 UTC | 13h 5m |
| 2026-05-14 | QNT575 | TAS → IST | May 14, 16:00 UTC | May 14, 17:25 UTC | 1h 25m |
| 2026-05-11 | QNT576 | IST → TAS | May 11, 20:20 UTC | May 12, 15:25 UTC | 19h 5m |
| 2026-05-11 | QNT576 | IST → TAS | May 11, 16:20 UTC | May 12, 15:25 UTC | 23h 6m |
| 2026-05-11 | QNT575 | TAS → IST | May 11, 15:00 UTC | May 12, 13:35 UTC | 22h 36m |
| 2026-05-09 | QNT575 | TAS → IST | May 9, 14:55 UTC | May 9, 21:00 UTC | 6h 5m |
| 2026-05-07 | QNT576 | IST → TAS | May 7, 20:20 UTC | May 8, 15:05 UTC | 18h 45m |
| 2026-05-07 | QNT576 | IST → TAS | May 7, 19:20 UTC | May 8, 15:05 UTC | 19h 45m |
| 2026-05-07 | QNT575 | TAS → IST | May 7, 15:00 UTC | May 7, 16:20 UTC | 1h 20m |
| 2026-05-06 | QNT576 | IST → TAS | May 6, 14:35 UTC | May 6, 15:45 UTC | 1h 10m |
| 2026-05-06 | QNT575 | TAS → IST | May 6, 09:20 UTC | May 6, 10:35 UTC | 1h 15m |
| 2026-05-05 | QNT575 | TAS → IST | May 5, 14:20 UTC | May 6, 10:35 UTC | 20h 15m |
| 2026-05-04 | QNT576 | IST → TAS | May 4, 19:50 UTC | May 5, 10:20 UTC | 14h 30m |
| 2026-05-04 | QNT575 | TAS → IST | May 4, 14:55 UTC | May 4, 16:10 UTC | 1h 15m |
| 2026-05-02 | QNT576 | IST → TAS | May 2, 20:35 UTC | May 2, 21:40 UTC | 1h 5m |
| 2026-05-02 | QNT575 | TAS → IST | May 2, 14:55 UTC | May 2, 16:25 UTC | 1h 30m |
| 2026-05-01 | QNT576 | IST → TAS | May 1, 14:05 UTC | May 1, 15:15 UTC | 1h 10m |
| 2026-04-30 | QNT575 | TAS → IST | Apr 30, 20:20 UTC | May 1, 09:30 UTC | 13h 10m |
| 2026-04-30 | QNT575 | TAS → IST | Apr 30, 15:30 UTC | Apr 30, 17:00 UTC | 1h 30m |
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 UK33021 page for operator, model, and routing details .