Apparatus

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sensors Mode-S transponder

151DE6

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73190 · BOEING 737-800

Hex
151DE6
Octal
05216746
Decimal
1,383,910
Country
RU
Tail
RA-73190
Type
B738
No current signal · last broadcast 1d ago
Flights observed
6
Distinct callsigns
3
Country
RU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 151DE6.

Country allocation

The ICAO 24-bit address 151DE6 falls within the block assigned to Russia (RU) by ICAO Annex 10, Volume III. Every aircraft registered in Russia 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 3 distinct

Callsign Airline Flights Last seen
SDM5968 - 3 2026-04-13
SDM5975 Rossiya - Russian Airlines 2 2026-04-13
SDM5969 - 1 2026-04-12

Recent flights last 6

DateFlightRouteTakeoffLandingDuration
2026-04-13 SDM5968 - Apr 13, 12:30 UTCApr 13, 13:30 UTC1h 0m
2026-04-13 SDM5968 - Apr 13, 11:55 UTCApr 13, 13:30 UTC1h 35m
2026-04-13 SDM5968 - Apr 13, 10:30 UTCApr 13, 11:55 UTC1h 25m
2026-04-13 SDM5975 UFA → SSH Apr 13, 07:55 UTCApr 13, 08:20 UTC25m
2026-04-13 SDM5975 UFA → SSH Apr 13, 06:15 UTCApr 13, 08:15 UTC2h 0m
2026-04-12 SDM5969 - Apr 12, 17:15 UTCApr 12, 18:10 UTC55m

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 RA-73190 page for operator, model, and routing details .

Mode-S 151DE6 frequently asked

What is Mode-S code 151DE6?
151DE6 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73190.
Where is Mode-S 151DE6 registered?
Mode-S code 151DE6 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DE6 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 151DE6, octal 05216746, decimal 1,383,910.
What flights does 151DE6 operate?
Mode-S 151DE6 has broadcast 3 distinct callsigns, including SDM5968, SDM5975, SDM5969.