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 2d ago
Flights observed
101
Distinct callsigns
20
Country
UZ
Last broadcast
2d ago

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 Uzbekistan Airways 18 2026-05-21
UZB232 Uzbekistan Airways 11 2026-05-14
UZB273 Uzbekistan Airways 9 2026-05-22
UZB274 Uzbekistan Airways 5 2026-05-22
UZB252 Uzbekistan Airways 5 2026-04-21
UZB566 - 4 2026-04-26
UZB271 Uzbekistan Airways 4 2026-05-13
UZB251 Uzbekistan Airways 4 2026-04-21
UZB102 Uzbekistan Airways 4 2026-05-17
UZB565 - 3 2026-04-25
UZB553 Uzbekistan Airways 3 2026-04-30
UZB528 Uzbekistan Airways 3 2026-05-22
UZB255 - 3 2026-04-17
UZB101 Uzbekistan Airways 3 2026-05-17
UZB554 Uzbekistan Airways 2 2026-04-30
UZB511 - 2 2026-04-30
UZB506 - 2 2026-05-08
UZB334 Uzbekistan Airways 2 2026-05-23
UZB333 Uzbekistan Airways 2 2026-05-27
UZB272 Uzbekistan Airways 2 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 UZB333 TAS → DXB May 27, 03:50 UTCMay 27, 10:55 UTC7h 5m
2026-05-25 UZB613 TAS → VKO May 25, 15:50 UTCMay 25, 20:19 UTC4h 30m
2026-05-23 UZB334 DXB → TAS May 23, 09:10 UTCMay 23, 09:20 UTC10m
2026-05-23 UZB333 TAS → DXB May 23, 06:15 UTCMay 23, 06:25 UTC10m
2026-05-22 UZB274 IST → TAS May 22, 20:00 UTCMay 23, 04:10 UTC8h 9m
2026-05-22 UZB273 TAS → IST May 22, 17:45 UTCMay 22, 17:55 UTC10m
2026-05-22 UZB528 NRT → TAS May 22, 02:45 UTCMay 22, 16:55 UTC14h 10m
2026-05-21 UZB527 TAS → NRT May 21, 10:20 UTCMay 22, 00:55 UTC14h 35m
2026-05-21 UZB231 TAS → FRA May 21, 06:10 UTCMay 21, 07:35 UTC1h 25m
2026-05-20 UZB231 TAS → FRA May 20, 11:00 UTCMay 21, 07:35 UTC20h 35m
2026-05-19 UZB274 IST → TAS May 19, 19:15 UTCMay 20, 11:05 UTC15h 51m
2026-05-19 UZB273 TAS → IST May 19, 14:30 UTCMay 19, 15:40 UTC1h 10m
2026-05-18 UZB273 TAS → IST May 18, 20:05 UTCMay 19, 15:40 UTC19h 35m
2026-05-18 UZB274 IST → TAS May 18, 19:15 UTCMay 18, 19:25 UTC10m
2026-05-18 UZB273 TAS → IST May 18, 16:35 UTCMay 18, 16:45 UTC10m
2026-05-18 UZB273 TAS → IST May 18, 01:15 UTCMay 18, 15:45 UTC14h 30m
2026-05-17 UZB102 JFK → RIX May 17, 17:20 UTCMay 18, 15:45 UTC22h 25m
2026-05-17 UZB102 JFK → RIX May 17, 17:10 UTCMay 18, 15:15 UTC22h 5m
2026-05-17 UZB101 TAS → JFK May 17, 04:25 UTCMay 17, 14:01 UTC9h 35m
2026-05-15 UZB273 TAS → IST May 15, 14:30 UTCMay 15, 21:30 UTC6h 59m
2026-05-14 UZB232 FRA → TAS May 14, 10:20 UTCMay 14, 13:50 UTC3h 30m
2026-05-14 UZB231 TAS → FRA May 14, 03:55 UTCMay 14, 07:30 UTC3h 35m
2026-05-13 UZB231 TAS → FRA May 13, 11:20 UTCMay 14, 07:30 UTC20h 10m
2026-05-13 UZB231 TAS → FRA May 13, 10:40 UTCMay 14, 07:30 UTC20h 50m
2026-05-13 UZB271 TAS → IST May 13, 05:20 UTCMay 14, 04:35 UTC23h 15m
2026-05-12 UZB274 IST → TAS May 12, 19:05 UTCMay 13, 11:55 UTC16h 50m
2026-05-12 UZB273 TAS → IST May 12, 14:25 UTCMay 12, 15:45 UTC1h 20m
2026-05-10 UZB102 JFK → RIX May 10, 23:00 UTCMay 11, 14:50 UTC15h 50m
2026-05-10 UZB102 JFK → RIX May 10, 17:20 UTCMay 11, 14:50 UTC21h 30m
2026-05-09 UZB101 TAS → JFK May 9, 20:15 UTCMay 10, 14:54 UTC18h 40m
2026-05-09 UZB101 TAS → JFK May 9, 15:20 UTCMay 10, 14:54 UTC23h 35m
2026-05-09 UZB273 TAS → IST May 9, 14:40 UTCMay 10, 13:14 UTC22h 35m
2026-05-08 UZB506 - May 8, 01:59 UTCMay 8, 02:14 UTC15m
2026-05-07 UZB505 - May 7, 23:05 UTCMay 7, 23:19 UTC15m
2026-05-07 UZB232 FRA → TAS May 7, 10:10 UTCMay 7, 13:30 UTC3h 20m
2026-05-07 UZB231 TAS → FRA May 7, 06:30 UTCMay 7, 07:25 UTC55m
2026-05-05 UZB506 - May 5, 01:50 UTCMay 5, 02:01 UTC10m
2026-05-04 UZB3253 - May 4, 06:25 UTCMay 4, 23:00 UTC16h 36m
2026-05-03 UZB258 FCO → TAS May 3, 19:20 UTCMay 4, 13:20 UTC18h 0m
2026-05-03 UZB258 FCO → TAS May 3, 18:55 UTCMay 4, 13:20 UTC18h 25m
2026-05-03 UZB257 TAS → FCO May 3, 12:40 UTCMay 3, 16:30 UTC3h 50m
2026-05-02 UZB334 DXB → TAS May 2, 08:55 UTCMay 2, 10:55 UTC2h 0m
2026-05-01 UZB274 IST → TAS May 1, 19:15 UTCMay 2, 06:45 UTC11h 30m
2026-05-01 UZB273 TAS → IST May 1, 01:40 UTCMay 1, 15:40 UTC14h 0m
2026-04-30 UZB511 - Apr 30, 22:45 UTCApr 30, 23:05 UTC20m
2026-04-30 UZB554 KUL → TAS Apr 30, 07:00 UTCApr 30, 22:05 UTC15h 5m
2026-04-30 UZB554 KUL → TAS Apr 30, 04:30 UTCApr 30, 04:40 UTC10m
2026-04-30 UZB553 TAS → KUL Apr 30, 01:40 UTCApr 30, 02:00 UTC20m
2026-04-29 UZB553 TAS → KUL Apr 29, 21:05 UTCApr 29, 23:20 UTC2h 14m
2026-04-29 UZB553 TAS → KUL Apr 29, 01:35 UTCApr 29, 23:20 UTC21h 45m

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 2d ago.
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, UZB232, UZB273, UZB274, UZB252.