Apparatus

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sensors Mode-S transponder

151DE3

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-73187 · BOEING 737-800

Hex
151DE3
Octal
05216743
Decimal
1,383,907
Country
RU
Tail
RA-73187
Type
B738
No current signal · last broadcast 2d ago
Flights observed
59
Distinct callsigns
18
Country
RU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 151DE3.

Country allocation

The ICAO 24-bit address 151DE3 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 18 distinct

Callsign Airline Flights Last seen
SDM6875 Rossiya - Russian Airlines 19 2026-05-24
SDM6876 Rossiya - Russian Airlines 11 2026-05-20
SDM6792 Rossiya - Russian Airlines 4 2026-05-22
SDM6622 Rossiya - Russian Airlines 4 2026-05-03
SDM6791 Rossiya - Russian Airlines 3 2026-05-08
SDM6621 Rossiya - Russian Airlines 3 2026-04-24
SDM6924 Rossiya - Russian Airlines 2 2026-05-28
SDM6895 Rossiya - Russian Airlines 2 2026-05-02
SDM6572 Rossiya - Russian Airlines 2 2026-05-25
SDM6988 Rossiya - Russian Airlines 1 2026-04-28
SDM6987 Rossiya - Russian Airlines 1 2026-04-21
SDM6923 Rossiya - Russian Airlines 1 2026-05-28
SDM6896 Rossiya - Russian Airlines 1 2026-05-03
SDM6476 Rossiya - Russian Airlines 1 2026-05-16
SDM6314 Rossiya - Russian Airlines 1 2026-05-18
SDM6313 Rossiya - Russian Airlines 1 2026-05-18
SDM6312 Rossiya - Russian Airlines 1 2026-05-18
SDM6311 Rossiya - Russian Airlines 1 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-28 SDM6924 EVN → EVN May 28, 15:30 UTCMay 28, 15:50 UTC20m
2026-05-28 SDM6924 EVN → EVN May 28, 12:25 UTCMay 28, 12:55 UTC30m
2026-05-28 SDM6923 LED → EVN May 28, 07:25 UTCMay 28, 10:45 UTC3h 20m
2026-05-25 SDM6572 KJA → LED May 25, 17:15 UTCMay 25, 18:05 UTC50m
2026-05-24 SDM6572 KJA → LED May 24, 21:05 UTCMay 25, 18:05 UTC21h 0m
2026-05-24 SDM6875 KJA → AER May 24, 09:55 UTCMay 24, 21:45 UTC11h 50m
2026-05-22 SDM6792 SVX → KJA May 22, 09:45 UTCMay 22, 10:20 UTC35m
2026-05-21 SDM6875 KJA → AER May 21, 10:05 UTCMay 22, 04:45 UTC18h 40m
2026-05-20 SDM6876 AER → KJA May 20, 23:05 UTCMay 21, 22:10 UTC23h 5m
2026-05-20 SDM6875 KJA → AER May 20, 13:40 UTCMay 21, 10:45 UTC21h 5m
2026-05-20 SDM6875 KJA → AER May 20, 10:00 UTCMay 20, 23:45 UTC13h 45m
2026-05-19 SDM6875 KJA → AER May 19, 23:25 UTCMay 20, 14:25 UTC15h 1m
2026-05-18 SDM6312 KGD → SVO May 18, 19:25 UTCMay 18, 20:35 UTC1h 10m
2026-05-18 SDM6314 KGD → SVO May 18, 11:55 UTCMay 18, 17:50 UTC5h 55m
2026-05-18 SDM6313 SVO → KGD May 18, 09:20 UTCMay 18, 10:00 UTC40m
2026-05-17 SDM6311 SVO → KGD May 17, 16:55 UTCMay 17, 17:30 UTC35m
2026-05-16 SDM6476 KJA → LED May 16, 05:25 UTCMay 16, 09:06 UTC3h 41m
2026-05-12 SDM6875 KJA → AER May 12, 10:00 UTCMay 12, 10:40 UTC40m
2026-05-10 SDM6876 AER → KJA May 10, 18:05 UTCMay 11, 10:10 UTC16h 5m
2026-05-10 SDM6876 AER → KJA May 10, 13:49 UTCMay 11, 10:10 UTC20h 20m
2026-05-10 SDM6876 AER → KJA May 10, 09:55 UTCMay 11, 04:40 UTC18h 45m
2026-05-08 SDM6791 KJA → SVX May 8, 12:20 UTCMay 8, 18:25 UTC6h 5m
2026-05-07 SDM6791 KJA → SVX May 7, 21:05 UTCMay 8, 18:25 UTC21h 20m
2026-05-07 SDM6875 KJA → AER May 7, 10:00 UTCMay 7, 21:45 UTC11h 45m
2026-05-06 SDM6875 KJA → AER May 6, 12:50 UTCMay 7, 10:45 UTC21h 55m
2026-05-06 SDM6876 AER → KJA May 6, 12:25 UTCMay 7, 10:45 UTC22h 20m
2026-05-05 SDM6875 KJA → AER May 5, 10:00 UTCMay 5, 11:05 UTC1h 5m
2026-05-03 SDM6622 PKX → KJA May 3, 20:00 UTCMay 3, 20:20 UTC20m
2026-05-03 SDM6896 FRU → KJA May 3, 02:55 UTCMay 3, 17:54 UTC14h 59m
2026-05-02 SDM6895 KJA → FRU May 2, 12:15 UTCMay 3, 08:20 UTC20h 4m
2026-05-01 SDM6792 SVX → KJA May 1, 18:10 UTCMay 2, 12:45 UTC18h 35m
2026-05-01 SDM6792 SVX → KJA May 1, 12:50 UTCMay 2, 12:45 UTC23h 55m
2026-05-01 SDM6791 KJA → SVX May 1, 12:25 UTCMay 1, 18:45 UTC6h 20m
2026-04-30 SDM6876 AER → KJA Apr 30, 20:50 UTCMay 1, 18:45 UTC21h 55m
2026-04-30 SDM6875 KJA → AER Apr 30, 10:10 UTCApr 30, 21:35 UTC11h 25m
2026-04-29 SDM6875 KJA → AER Apr 29, 21:00 UTCApr 30, 11:15 UTC14h 14m
2026-04-28 SDM6875 KJA → AER Apr 28, 23:50 UTCApr 29, 15:05 UTC15h 16m
2026-04-28 SDM6988 MRV → KJA Apr 28, 13:50 UTCApr 29, 10:40 UTC20h 50m
2026-04-27 SDM6876 AER → KJA Apr 27, 21:10 UTCApr 28, 14:25 UTC17h 15m
2026-04-27 SDM6875 KJA → AER Apr 27, 07:15 UTCApr 27, 15:40 UTC8h 25m
2026-04-26 SDM6622 PKX → KJA Apr 26, 19:50 UTCApr 27, 02:25 UTC6h 35m
2026-04-25 SDM6876 AER → KJA Apr 25, 22:10 UTCApr 25, 22:55 UTC45m
2026-04-24 SDM6875 KJA → AER Apr 24, 22:50 UTCApr 25, 16:35 UTC17h 45m
2026-04-24 SDM6621 KJA → PKX Apr 24, 19:30 UTCApr 24, 19:45 UTC15m
2026-04-24 SDM6621 KJA → PKX Apr 24, 09:10 UTCApr 24, 18:00 UTC8h 50m
2026-04-23 SDM6876 AER → KJA Apr 23, 21:35 UTCApr 24, 18:00 UTC20h 25m
2026-04-22 SDM6875 KJA → AER Apr 22, 20:55 UTCApr 23, 15:50 UTC18h 55m
2026-04-22 SDM6875 KJA → AER Apr 22, 00:15 UTCApr 22, 15:50 UTC15h 35m
2026-04-21 SDM6987 KJA → MRV Apr 21, 13:55 UTCApr 21, 19:15 UTC5h 20m
2026-04-20 SDM6792 SVX → KJA Apr 20, 10:00 UTCApr 20, 10:30 UTC30m

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-73187 page for operator, model, and routing details .

Mode-S 151DE3 frequently asked

What is Mode-S code 151DE3?
151DE3 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-73187.
Where is Mode-S 151DE3 registered?
Mode-S code 151DE3 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 151DE3 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 151DE3, octal 05216743, decimal 1,383,907.
What flights does 151DE3 operate?
Mode-S 151DE3 has broadcast 18 distinct callsigns, including SDM6875, SDM6876, SDM6792, SDM6622, SDM6791.