Apparatus

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sensors Mode-S transponder

507C44

ICAO 24-bit transponder address · allocated to Uzbekistan

Currently assigned to UK-67003 · BOEING 767-300

Hex
507C44
Octal
24076104
Decimal
5,274,692
Country
UZ
Tail
UK-67003
Type
B763
No current signal · last broadcast Jul 26, 19:35 UTC
Flights observed
169
Distinct callsigns
20
Country
UZ
Last broadcast
Jul 26, 19:35 UTC

Last known position

Most recent position reported by Mode-S 507C44.

Country allocation

The ICAO 24-bit address 507C44 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
UZB271 Uzbekistan Airways 19 2026-07-24
UZB272 Uzbekistan Airways 12 2026-07-24
UZB423 Uzbekistan Airways 9 2026-07-23
UZB301 - 9 2026-07-16
UZB424 - 8 2026-07-09
UZB633 - 6 2026-07-12
UZB211 Uzbekistan Airways 6 2026-05-20
UZB601 Uzbekistan Airways 5 2026-06-27
UZB5306 - 5 2026-06-11
UZB302 - 5 2026-07-16
UZB634 Uzbekistan Airways 4 2026-06-08
UZB603 Uzbekistan Airways 4 2026-05-28
UZB535 - 4 2026-04-28
UZB5349 - 4 2026-06-17
UZB532 Uzbekistan Airways 4 2026-05-19
UZB531 Uzbekistan Airways 4 2026-05-18
UZB422 - 4 2026-07-14
UZB631 Uzbekistan Airways 3 2026-07-26
UZB5368 - 3 2026-06-17
UZB5347 - 3 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UZB631 TAS → LED Jul 26, 19:25 UTCJul 26, 19:35 UTC10m
2026-07-25 UZB706 - Jul 25, 20:15 UTCJul 26, 06:55 UTC10h 41m
2026-07-25 UZB705 - Jul 25, 07:15 UTCJul 26, 06:55 UTC23h 41m
2026-07-24 UZB272 IST → TAS Jul 24, 11:15 UTCJul 25, 08:25 UTC21h 10m
2026-07-24 UZB272 IST → TAS Jul 24, 10:25 UTCJul 25, 08:25 UTC22h 0m
2026-07-24 UZB271 TAS → IST Jul 24, 05:40 UTCJul 24, 08:15 UTC2h 35m
2026-07-23 UZB271 TAS → IST Jul 23, 09:05 UTCJul 24, 08:15 UTC23h 10m
2026-07-23 UZB271 TAS → IST Jul 23, 08:55 UTCJul 24, 07:00 UTC22h 5m
2026-07-23 UZB423 TAS → DEL Jul 23, 05:50 UTCJul 23, 06:40 UTC50m
2026-07-22 UZB282 IST → TAS Jul 22, 03:25 UTCJul 22, 05:20 UTC1h 55m
2026-07-21 UZB281 TAS → IST Jul 21, 10:15 UTCJul 22, 01:10 UTC14h 55m
2026-07-21 UZB271 TAS → IST Jul 21, 07:25 UTCJul 21, 07:50 UTC25m
2026-07-21 UZB271 TAS → IST Jul 21, 05:25 UTCJul 21, 06:10 UTC45m
2026-07-19 UZB631 TAS → LED Jul 19, 17:30 UTCJul 20, 06:20 UTC12h 50m
2026-07-17 UZB282 - Jul 17, 03:25 UTCJul 17, 05:15 UTC1h 50m
2026-07-17 UZB281 - Jul 17, 01:15 UTCJul 17, 01:25 UTC10m
2026-07-16 UZB302 - Jul 16, 10:50 UTCJul 17, 00:14 UTC13h 25m
2026-07-16 UZB301 - Jul 16, 06:00 UTCJul 16, 08:35 UTC2h 35m
2026-07-14 UZB422 - Jul 14, 01:05 UTCJul 14, 01:45 UTC40m
2026-07-13 UZB272 - Jul 13, 09:55 UTCJul 13, 23:00 UTC13h 5m
2026-07-13 UZB271 - Jul 13, 05:10 UTCJul 13, 07:40 UTC2h 30m
2026-07-12 UZB633 - Jul 12, 06:20 UTCJul 12, 06:30 UTC10m
2026-07-10 UZB272 - Jul 10, 09:55 UTCJul 10, 19:05 UTC9h 10m
2026-07-09 UZB271 - Jul 9, 20:40 UTCJul 10, 07:55 UTC11h 15m
2026-07-09 UZB3209 - Jul 9, 17:55 UTCJul 9, 18:10 UTC15m
2026-07-09 UZB424 - Jul 9, 09:00 UTCJul 9, 09:40 UTC40m
2026-07-09 UZB423 - Jul 9, 05:30 UTCJul 9, 06:10 UTC40m
2026-07-07 UZB334 - Jul 7, 08:50 UTCJul 7, 11:00 UTC2h 10m
2026-07-07 UZB333 - Jul 7, 06:30 UTCJul 7, 06:40 UTC10m
2026-07-06 UZB424 - Jul 6, 09:05 UTCJul 7, 04:30 UTC19h 25m
2026-07-06 UZB424 - Jul 6, 08:40 UTCJul 7, 04:30 UTC19h 50m
2026-07-06 UZB423 - Jul 6, 05:55 UTCJul 6, 06:40 UTC45m
2026-07-04 UZB631 TAS → LED Jul 4, 18:10 UTCJul 4, 18:25 UTC15m
2026-07-04 UZB282 - Jul 4, 03:30 UTCJul 4, 17:00 UTC13h 30m
2026-07-04 UZB281 - Jul 4, 01:15 UTCJul 4, 01:30 UTC15m
2026-07-03 UZB272 - Jul 3, 09:50 UTCJul 4, 00:25 UTC14h 35m
2026-07-03 UZB271 - Jul 3, 05:10 UTCJul 3, 07:40 UTC2h 30m
2026-07-02 UZB271 - Jul 2, 11:05 UTCJul 3, 07:40 UTC20h 35m
2026-07-02 UZB271 - Jul 2, 10:50 UTCJul 3, 07:40 UTC20h 50m
2026-07-02 UZB301 - Jul 2, 06:15 UTCJul 2, 08:50 UTC2h 35m
2026-07-01 UZB301 - Jul 1, 07:05 UTCJul 2, 06:55 UTC23h 50m
2026-07-01 UZB633 - Jul 1, 06:25 UTCJul 1, 07:05 UTC40m
2026-06-30 UZB422 - Jun 30, 01:14 UTCJun 30, 01:55 UTC41m
2026-06-29 UZB302 TLV → DEL Jun 29, 10:50 UTCJun 29, 23:14 UTC12h 25m
2026-06-29 UZB301 - Jun 29, 05:45 UTCJun 29, 08:39 UTC2h 55m
2026-06-27 UZB601 TAS → DME Jun 27, 17:20 UTCJun 28, 06:30 UTC13h 10m
2026-06-26 UZB272 - Jun 26, 10:10 UTCJun 26, 12:00 UTC1h 50m
2026-06-26 UZB271 - Jun 26, 05:19 UTCJun 26, 07:39 UTC2h 20m
2026-06-25 UZB604 - Jun 25, 09:25 UTCJun 25, 09:45 UTC20m
2026-06-23 UZB604 - Jun 23, 15:40 UTCJun 24, 06:10 UTC14h 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 UK-67003 page for operator, model, and routing details .

Mode-S 507C44 frequently asked

What is Mode-S code 507C44?
507C44 is an ICAO 24-bit transponder address. Allocated to Uzbekistan. Assigned to UK-67003.
Where is Mode-S 507C44 registered?
Mode-S code 507C44 is allocated to Uzbekistan (UZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 507C44 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 507C44, octal 24076104, decimal 5,274,692.
What flights does 507C44 operate?
Mode-S 507C44 has broadcast 20 distinct callsigns, including UZB271, UZB272, UZB423, UZB301, UZB424.