sensors Mode-S transponder

5084D1

ICAO 24-bit transponder address · allocated to Ukraine

Currently assigned to UR-SLE · BOEING 757-300

Hex
5084D1
Octal
24102321
Decimal
5,276,881
Country
UA
Tail
UR-SLE
Type
B753
Broadcasting now · callsign MGH202 · 35,000 ft
Flights observed
6
Distinct callsigns
4
Country
UA
Last broadcast
23h ago

Current position

5084D1 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 5084D1 falls within the block assigned to Ukraine (UA) by ICAO Annex 10, Volume III. Every aircraft registered in Ukraine 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
MGH702 - 2 2026-04-13
MGH101 - 2 2026-04-13
MGH701 - 1 2026-04-12
MGH102 - 1 2026-04-13

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 MGH102 - Apr 13, 22:35 UTCApr 13, 23:45 UTC1h 10m
2026-04-13 MGH101 - Apr 13, 19:50 UTCApr 13, 20:30 UTC40m
2026-04-13 MGH101 - Apr 13, 17:00 UTCApr 13, 20:10 UTC3h 10m
2026-04-13 MGH702 - Apr 13, 00:20 UTCApr 13, 01:30 UTC1h 10m
2026-04-12 MGH702 - Apr 12, 23:55 UTCApr 13, 01:30 UTC1h 35m
2026-04-12 MGH701 - Apr 12, 17:30 UTCApr 12, 20:15 UTC2h 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 UR-SLE page for operator, model, and routing details .

Mode-S 5084D1 frequently asked

What is Mode-S code 5084D1?
5084D1 is an ICAO 24-bit transponder address. Allocated to Ukraine. Assigned to UR-SLE.
Where is Mode-S 5084D1 registered?
Mode-S code 5084D1 is allocated to Ukraine (UA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 5084D1 broadcasting right now?
Yes. Mode-S 5084D1 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 5084D1, octal 24102321, decimal 5,276,881.
What flights does 5084D1 operate?
Mode-S 5084D1 has broadcast 4 distinct callsigns, including MGH702, MGH101, MGH701, MGH102.