sensors Mode-S transponder

507C9F

ICAO 24-bit transponder address · allocated to Uzbekistan

Currently assigned to UK32073 · AEROPRO Eurofox

Hex
507C9F
Octal
24076237
Decimal
5,274,783
Country
UZ
Tail
UK32073
Type
EFOX
No current signal · last broadcast 13h ago
Flights observed
5
Distinct callsigns
4
Country
UZ
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 507C9F.

Country allocation

The ICAO 24-bit address 507C9F 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
MFX222 - 2 2026-04-13
MFX352 - 1 2026-04-14
MFX351 - 1 2026-04-14
MFX221 - 1 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 MFX352 - Apr 14, 09:30 UTCApr 14, 10:00 UTC30m
2026-04-14 MFX351 - Apr 14, 07:00 UTCApr 14, 07:10 UTC10m
2026-04-13 MFX222 - Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 MFX222 - Apr 13, 11:35 UTCApr 13, 12:05 UTC30m
2026-04-13 MFX221 - Apr 13, 09:40 UTCApr 13, 10:05 UTC25m

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 UK32073 page for operator, model, and routing details .

Mode-S 507C9F frequently asked

What is Mode-S code 507C9F?
507C9F is an ICAO 24-bit transponder address. Allocated to Uzbekistan. Assigned to UK32073.
Where is Mode-S 507C9F registered?
Mode-S code 507C9F is allocated to Uzbekistan (UZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 507C9F broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 507C9F, octal 24076237, decimal 5,274,783.
What flights does 507C9F operate?
Mode-S 507C9F has broadcast 4 distinct callsigns, including MFX222, MFX352, MFX351, MFX221.