Apparatus

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sensors Mode-S transponder

507C98

ICAO 24-bit transponder address · allocated to Uzbekistan

Currently assigned to UK32131 · AIRBUS A-321neo

Hex
507C98
Octal
24076230
Decimal
5,274,776
Country
UZ
Tail
UK32131
Type
A21N
No current signal · last broadcast 2d ago
Flights observed
159
Distinct callsigns
20
Country
UZ
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 507C98.

Country allocation

The ICAO 24-bit address 507C98 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
MFX5538 - 21 2026-07-08
MFX550 - 17 2026-07-07
MFX549 - 17 2026-07-14
MFX5539 - 16 2026-07-14
MFX5537 - 16 2026-07-08
MFX5536 - 14 2026-05-10
MFX5540 - 10 2026-06-29
MFX530 - 10 2026-06-04
MFX529 - 8 2026-07-11
MFX315 My Freighter LLC 7 2026-06-09
MFX5535 - 3 2026-05-10
MFX404 - 3 2026-06-26
MFX455 - 2 2026-05-21
MFX422 - 2 2026-07-04
MFX401 My Freighter LLC 2 2026-06-15
MFX316 My Freighter LLC 2 2026-06-06
MFX301 - 2 2026-04-18
MFX558 - 1 2026-06-19
MFX557 - 1 2026-06-19
MFX421 - 1 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 MFX5539 - Jul 14, 19:25 UTCJul 15, 06:55 UTC11h 29m
2026-07-14 MFX5539 - Jul 14, 06:25 UTCJul 15, 05:15 UTC22h 49m
2026-07-14 MFX5539 - Jul 14, 05:05 UTCJul 15, 04:00 UTC22h 54m
2026-07-14 MFX549 - Jul 14, 01:35 UTCJul 14, 02:05 UTC30m
2026-07-14 MFX549 - Jul 14, 00:20 UTCJul 14, 00:45 UTC25m
2026-07-11 MFX529 - Jul 11, 21:20 UTCJul 12, 08:05 UTC10h 45m
2026-07-09 MFX529 - Jul 9, 20:50 UTCJul 10, 07:55 UTC11h 5m
2026-07-09 MFX529 - Jul 9, 06:05 UTCJul 10, 06:00 UTC23h 55m
2026-07-09 MFX529 - Jul 9, 04:05 UTCJul 10, 01:00 UTC20h 55m
2026-07-08 MFX5538 - Jul 8, 22:05 UTCJul 9, 21:45 UTC23h 40m
2026-07-08 MFX5537 - Jul 8, 19:25 UTCJul 9, 07:45 UTC12h 20m
2026-07-07 MFX550 - Jul 7, 04:30 UTCJul 7, 04:55 UTC25m
2026-07-07 MFX549 - Jul 7, 01:55 UTCJul 7, 02:25 UTC30m
2026-07-07 MFX549 - Jul 7, 00:40 UTCJul 7, 01:00 UTC20m
2026-07-04 MFX529 - Jul 4, 21:15 UTCJul 5, 08:10 UTC10h 55m
2026-07-04 MFX422 - Jul 4, 12:25 UTCJul 4, 13:10 UTC45m
2026-07-04 MFX421 - Jul 4, 09:25 UTCJul 4, 10:25 UTC1h 0m
2026-07-03 MFX550 - Jul 3, 06:25 UTCJul 3, 06:40 UTC15m
2026-07-03 MFX550 - Jul 3, 05:10 UTCJul 3, 05:25 UTC15m
2026-07-03 MFX549 - Jul 3, 02:40 UTCJul 3, 03:00 UTC20m
2026-07-02 MFX5538 - Jul 2, 06:15 UTCJul 3, 01:45 UTC19h 30m
2026-07-02 MFX5538 - Jul 2, 05:00 UTCJul 3, 01:45 UTC20h 45m
2026-07-01 MFX5537 - Jul 1, 20:15 UTCJul 2, 08:45 UTC12h 30m
2026-06-30 MFX5537 - Jun 30, 23:30 UTCJul 1, 22:00 UTC22h 30m
2026-06-30 MFX550 - Jun 30, 05:55 UTCJun 30, 23:40 UTC17h 45m
2026-06-30 MFX550 - Jun 30, 04:40 UTCJun 30, 04:55 UTC15m
2026-06-30 MFX549 - Jun 30, 01:55 UTCJun 30, 02:25 UTC30m
2026-06-29 MFX5540 - Jun 29, 06:05 UTCJun 30, 01:00 UTC18h 55m
2026-06-29 MFX5540 - Jun 29, 04:04 UTCJun 30, 01:00 UTC20h 55m
2026-06-29 MFX5540 - Jun 29, 03:29 UTCJun 30, 01:00 UTC21h 30m
2026-06-28 MFX5539 - Jun 28, 19:40 UTCJun 29, 07:44 UTC12h 5m
2026-06-28 MFX5539 - Jun 28, 08:05 UTCJun 29, 07:44 UTC23h 40m
2026-06-28 MFX5539 - Jun 28, 06:05 UTCJun 29, 05:59 UTC23h 55m
2026-06-28 MFX5539 - Jun 28, 04:59 UTCJun 29, 04:00 UTC23h 0m
2026-06-28 MFX5539 - Jun 28, 00:04 UTCJun 28, 23:50 UTC23h 45m
2026-06-27 MFX5538 - Jun 27, 22:04 UTCJun 28, 21:59 UTC23h 55m
2026-06-27 MFX5537 - Jun 27, 20:19 UTCJun 28, 19:59 UTC23h 40m
2026-06-27 MFX5537 - Jun 27, 14:05 UTCJun 28, 08:39 UTC18h 35m
2026-06-27 MFX5537 - Jun 27, 13:55 UTCJun 28, 08:39 UTC18h 45m
2026-06-26 MFX404 - Jun 26, 21:30 UTCJun 27, 14:09 UTC16h 40m
2026-06-26 MFX550 - Jun 26, 06:04 UTCJun 26, 22:05 UTC16h 0m
2026-06-26 MFX550 - Jun 26, 04:50 UTCJun 26, 05:10 UTC20m
2026-06-26 MFX549 - Jun 26, 02:05 UTCJun 26, 02:24 UTC20m
2026-06-26 MFX549 - Jun 26, 00:50 UTCJun 26, 01:10 UTC20m
2026-06-23 MFX550 - Jun 23, 04:39 UTCJun 23, 06:29 UTC1h 50m
2026-06-23 MFX549 - Jun 23, 01:35 UTCJun 23, 01:54 UTC20m
2026-06-22 MFX549 - Jun 22, 14:14 UTCJun 23, 00:45 UTC10h 30m
2026-06-20 MFX529 - Jun 20, 21:00 UTCJun 21, 07:34 UTC10h 35m
2026-06-19 MFX558 - Jun 19, 07:04 UTCJun 19, 07:45 UTC40m
2026-06-19 MFX557 - Jun 19, 03:39 UTCJun 19, 04:44 UTC1h 5m

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 UK32131 page for operator, model, and routing details .

Mode-S 507C98 frequently asked

What is Mode-S code 507C98?
507C98 is an ICAO 24-bit transponder address. Allocated to Uzbekistan. Assigned to UK32131.
Where is Mode-S 507C98 registered?
Mode-S code 507C98 is allocated to Uzbekistan (UZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 507C98 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 507C98, octal 24076230, decimal 5,274,776.
What flights does 507C98 operate?
Mode-S 507C98 has broadcast 20 distinct callsigns, including MFX5538, MFX550, MFX549, MFX5539, MFX5537.