Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast Jul 26, 17:35 UTC
Flights observed
197
Distinct callsigns
20
Country
UZ
Last broadcast
Jul 26, 17:35 UTC

Last known position

Most recent position reported by Mode-S 507C55.

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 20 2026-07-16
UZB232 - 16 2026-07-02
UZB101 Uzbekistan Airways 15 2026-07-24
UZB271 - 11 2026-07-15
UZB102 Uzbekistan Airways 11 2026-07-24
UZB274 - 8 2026-07-03
UZB554 - 6 2026-07-09
UZB553 - 6 2026-07-08
UZB272 - 5 2026-07-15
UZB252 Uzbekistan Airways 5 2026-04-21
UZB201 - 5 2026-07-14
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
UZB3253 - 4 2026-07-26
UZB251 Uzbekistan Airways 4 2026-04-21
UZB565 - 3 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 UZB3254 - Jul 26, 15:40 UTCJul 26, 17:35 UTC1h 55m
2026-07-26 UZB3253 - Jul 26, 11:25 UTCJul 26, 13:55 UTC2h 30m
2026-07-25 UZB3253 - Jul 25, 15:30 UTCJul 26, 13:55 UTC22h 26m
2026-07-24 UZB102 JFK → RIX Jul 24, 23:05 UTCJul 25, 15:45 UTC16h 40m
2026-07-24 UZB102 JFK → RIX Jul 24, 17:20 UTCJul 25, 15:45 UTC22h 25m
2026-07-24 UZB101 TAS → JFK Jul 24, 06:05 UTCJul 24, 14:40 UTC8h 35m
2026-07-17 UZB102 - Jul 17, 17:15 UTCJul 18, 01:20 UTC8h 5m
2026-07-16 UZB101 - Jul 16, 19:20 UTCJul 17, 14:20 UTC19h 0m
2026-07-16 UZB101 - Jul 16, 19:14 UTCJul 17, 14:20 UTC19h 5m
2026-07-16 UZB273 TAS → IST Jul 16, 03:00 UTCJul 16, 16:55 UTC13h 55m
2026-07-16 UZB514 - Jul 16, 01:50 UTCJul 16, 02:10 UTC20m
2026-07-15 UZB513 - Jul 15, 22:45 UTCJul 15, 23:15 UTC30m
2026-07-15 UZB272 - Jul 15, 09:55 UTCJul 15, 22:10 UTC12h 15m
2026-07-15 UZB271 - Jul 15, 07:15 UTCJul 15, 07:40 UTC25m
2026-07-14 UZB202 - Jul 14, 16:10 UTCJul 15, 06:40 UTC14h 29m
2026-07-14 UZB201 - Jul 14, 09:50 UTCJul 14, 14:00 UTC4h 10m
2026-07-13 UZB201 - Jul 13, 15:20 UTCJul 14, 14:00 UTC22h 40m
2026-07-13 UZB201 - Jul 13, 14:20 UTCJul 14, 13:15 UTC22h 55m
2026-07-12 UZB3223 - Jul 12, 17:20 UTCJul 13, 11:55 UTC18h 35m
2026-07-12 UZB101 - Jul 12, 07:10 UTCJul 12, 14:25 UTC7h 15m
2026-07-11 UZB272 - Jul 11, 11:20 UTCJul 12, 07:25 UTC20h 5m
2026-07-11 UZB272 - Jul 11, 09:55 UTCJul 12, 07:25 UTC21h 30m
2026-07-11 UZB271 - Jul 11, 05:20 UTCJul 11, 07:40 UTC2h 20m
2026-07-10 UZB506 - Jul 10, 02:30 UTCJul 10, 02:45 UTC15m
2026-07-09 UZB505 - Jul 9, 23:20 UTCJul 9, 23:30 UTC10m
2026-07-09 UZB554 - Jul 9, 05:35 UTCJul 9, 10:25 UTC4h 50m
2026-07-08 UZB553 - Jul 8, 14:25 UTCJul 9, 03:45 UTC13h 20m
2026-07-07 UZB102 - Jul 7, 17:25 UTCJul 8, 12:10 UTC18h 45m
2026-07-06 UZB101 - Jul 6, 19:20 UTCJul 7, 13:40 UTC18h 20m
2026-07-06 UZB101 - Jul 6, 18:55 UTCJul 7, 13:40 UTC18h 45m
2026-07-06 UZB273 TAS → IST Jul 6, 01:35 UTCJul 6, 16:50 UTC15h 15m
2026-07-05 UZB273 TAS → IST Jul 5, 17:20 UTCJul 6, 16:50 UTC23h 30m
2026-07-05 UZB101 - Jul 5, 07:20 UTCJul 5, 14:15 UTC6h 55m
2026-07-04 UZB424 - Jul 4, 08:20 UTCJul 4, 08:55 UTC35m
2026-07-03 UZB274 - Jul 3, 19:25 UTCJul 4, 06:50 UTC11h 25m
2026-07-03 UZB273 TAS → IST Jul 3, 01:50 UTCJul 3, 16:55 UTC15h 5m
2026-07-02 UZB505 - Jul 2, 22:55 UTCJul 2, 23:05 UTC10m
2026-07-02 UZB232 - Jul 2, 10:20 UTCJul 2, 13:40 UTC3h 20m
2026-07-01 UZB231 - Jul 1, 14:20 UTCJul 2, 07:25 UTC17h 5m
2026-06-30 UZB202 - Jun 30, 16:30 UTCJul 1, 11:35 UTC19h 5m
2026-06-30 UZB201 - Jun 30, 13:45 UTCJun 30, 14:10 UTC25m
2026-06-29 UZB201 - Jun 29, 19:29 UTCJun 30, 13:40 UTC18h 11m
2026-06-28 UZB273 TAS → IST Jun 28, 23:20 UTCJun 29, 17:10 UTC17h 50m
2026-06-28 UZB273 TAS → IST Jun 28, 17:19 UTCJun 29, 17:10 UTC23h 50m
2026-06-28 UZB102 - Jun 28, 17:04 UTCJun 29, 15:14 UTC22h 10m
2026-06-28 UZB101 - Jun 28, 07:05 UTCJun 28, 14:14 UTC7h 10m
2026-06-27 UZB101 - Jun 27, 09:19 UTCJun 28, 08:05 UTC22h 45m
2026-06-27 UZB334 - Jun 27, 08:55 UTCJun 28, 07:14 UTC22h 20m
2026-06-26 UZB601 TAS → DME Jun 26, 17:15 UTCJun 27, 06:09 UTC12h 55m
2026-06-26 UZB601 TAS → DME Jun 26, 05:24 UTCJun 27, 04:05 UTC22h 40m

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 .

Mode-S 507C55 frequently asked

What is Mode-S code 507C55?
507C55 is an ICAO 24-bit transponder address. Allocated to Uzbekistan. Assigned to UK-78705.
Where is Mode-S 507C55 registered?
Mode-S code 507C55 is allocated to Uzbekistan (UZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 507C55 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 507C55, octal 24076125, decimal 5,274,709.
What flights does 507C55 operate?
Mode-S 507C55 has broadcast 20 distinct callsigns, including UZB231, UZB273, UZB232, UZB101, UZB271.