Apparatus

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sensors Mode-S transponder

155C2B

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89131 · SUKHOI Superjet 100-95

Hex
155C2B
Octal
05256053
Decimal
1,399,851
Country
RU
Tail
RA-89131
Type
SU95
No current signal · last broadcast 6d ago
Flights observed
46
Distinct callsigns
20
Country
RU
Last broadcast
6d ago

Last known position

Most recent position reported by Mode-S 155C2B.

Country allocation

The ICAO 24-bit address 155C2B 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 20 distinct

Callsign Airline Flights Last seen
SDM6535 Rossiya - Russian Airlines 2 2026-06-01
SDM6492 - 2 2026-07-05
SDM6491 - 2 2026-07-05
SDM6177 Rossiya - Russian Airlines 2 2026-06-06
SDM6173 Rossiya - Russian Airlines 2 2026-05-29
SDM6105 Rossiya - Russian Airlines 2 2026-04-30
SDM6079 Rossiya - Russian Airlines 2 2026-06-01
SDM6011 - 2 2026-04-16
SDM6008 Rossiya - Russian Airlines 2 2026-05-09
SDM6827 Rossiya - Russian Airlines 1 2026-05-30
SDM6811 Rossiya - Russian Airlines 1 2026-06-22
SDM6805 - 1 2026-07-11
SDM6591 - 1 2026-06-28
SDM6588 Rossiya - Russian Airlines 1 2026-05-10
SDM6503 Rossiya - Russian Airlines 1 2026-04-26
SDM6497 Rossiya - Russian Airlines 1 2026-05-31
SDM6490 - 1 2026-07-05
SDM6480 - 1 2026-06-29
SDM6408 Rossiya - Russian Airlines 1 2026-05-28
SDM6407 Rossiya - Russian Airlines 1 2026-05-28

Recent flights last 46

DateFlightRouteTakeoffLandingDuration
2026-07-11 SDM6805 SVO → SVO Jul 11, 21:00 UTCJul 11, 22:20 UTC1h 20m
2026-07-11 SDM6145 - Jul 11, 12:00 UTCJul 11, 12:15 UTC15m
2026-07-05 SDM6490 - Jul 5, 19:15 UTCJul 5, 19:35 UTC20m
2026-07-05 SDM6492 - Jul 5, 06:45 UTCJul 5, 07:15 UTC30m
2026-07-05 SDM6491 - Jul 5, 04:10 UTCJul 5, 04:40 UTC30m
2026-06-29 SDM6480 - Jun 29, 04:09 UTCJun 29, 05:04 UTC55m
2026-06-28 SDM6591 - Jun 28, 00:30 UTCJun 28, 00:50 UTC20m
2026-06-27 SDM6247 SVO → NBC Jun 27, 16:20 UTCJun 27, 16:44 UTC25m
2026-06-22 SDM6811 SVO → SKX Jun 22, 04:49 UTCJun 22, 05:04 UTC15m
2026-06-21 SDM6492 GSV → SVO Jun 21, 06:55 UTCJun 21, 07:00 UTC5m
2026-06-21 SDM6491 SVO → GSV Jun 21, 04:10 UTCJun 21, 05:20 UTC1h 10m
2026-06-20 SDM6406 - Jun 20, 06:45 UTCJun 20, 07:14 UTC30m
2026-06-12 SDM6054 - Jun 12, 12:00 UTCJun 12, 12:25 UTC25m
2026-06-12 SDM6053 - Jun 12, 09:30 UTCJun 12, 09:45 UTC15m
2026-06-10 SDM6032 VKO → LED Jun 10, 17:00 UTCJun 10, 18:05 UTC1h 5m
2026-06-06 SDM6177 LED → VKO Jun 6, 14:40 UTCJun 6, 14:59 UTC20m
2026-06-05 SDM6039 SVO → LED Jun 5, 04:20 UTCJun 5, 05:25 UTC1h 5m
2026-06-01 SDM6079 SVO → ULV Jun 1, 16:10 UTCJun 1, 16:40 UTC30m
2026-06-01 SDM6535 SVO → UFA Jun 1, 09:25 UTCJun 1, 09:50 UTC25m
2026-06-01 SDM6299 SVO → NBC Jun 1, 03:05 UTCJun 1, 03:30 UTC25m
2026-05-31 SDM6497 SVO → LED May 31, 13:20 UTCMay 31, 14:15 UTC55m
2026-05-30 SDM6827 SVO → SKX May 30, 16:55 UTCMay 30, 17:20 UTC25m
2026-05-29 SDM6173 SVO → REN May 29, 09:10 UTCMay 29, 09:40 UTC30m
2026-05-28 SDM6408 SCW → SVO May 28, 17:40 UTCMay 28, 18:10 UTC30m
2026-05-28 SDM6407 SVO → SCW May 28, 15:25 UTCMay 28, 16:05 UTC40m
2026-05-26 SDM6173 SVO → REN May 26, 09:15 UTCMay 26, 09:40 UTC25m
2026-05-25 SDM6079 SVO → ULV May 25, 16:20 UTCMay 25, 16:50 UTC30m
2026-05-25 SDM6535 SVO → UFA May 25, 09:55 UTCMay 25, 10:15 UTC20m
2026-05-10 SDM6588 SCW → LED May 10, 02:34 UTCMay 10, 03:25 UTC50m
2026-05-09 SDM6329 LED → KGD May 9, 15:40 UTCMay 9, 16:30 UTC50m
2026-05-09 SDM6008 VKO → LED May 9, 09:50 UTCMay 9, 11:00 UTC1h 10m
2026-05-09 SDM6007 LED → VKO May 9, 07:10 UTCMay 9, 08:25 UTC1h 15m
2026-05-01 SDM6009 LED → VKO May 1, 08:25 UTCMay 1, 08:50 UTC25m
2026-04-30 SDM6105 LED → GOJ Apr 30, 07:50 UTCApr 30, 08:45 UTC55m
2026-04-29 SDM6027 LED → VKO Apr 29, 10:05 UTCApr 29, 11:05 UTC1h 0m
2026-04-28 SDM6005 LED → VKO Apr 28, 08:10 UTCApr 28, 09:25 UTC1h 15m
2026-04-26 SDM6098 LED → SVO Apr 26, 20:20 UTCApr 26, 21:05 UTC45m
2026-04-26 SDM6097 SVO → LED Apr 26, 17:55 UTCApr 26, 18:45 UTC50m
2026-04-26 SDM6503 SVO → ARH Apr 26, 05:30 UTCApr 26, 05:55 UTC25m
2026-04-25 SDM6008 VKO → LED Apr 25, 11:55 UTCApr 25, 12:55 UTC1h 0m
2026-04-24 SDM6177 LED → VKO Apr 24, 14:25 UTCApr 24, 15:20 UTC55m
2026-04-23 SDM6105 LED → GOJ Apr 23, 13:15 UTCApr 23, 14:15 UTC1h 0m
2026-04-23 SDM6190 VKO → LED Apr 23, 03:50 UTCApr 23, 04:50 UTC1h 0m
2026-04-16 SDM6011 LED → LED Apr 16, 15:15 UTCApr 16, 15:45 UTC30m
2026-04-16 SDM6011 LED → LED Apr 16, 14:35 UTCApr 16, 15:10 UTC35m
2026-04-15 SDM6031 LED → VKO Apr 15, 11:05 UTCApr 15, 12:10 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 RA-89131 page for operator, model, and routing details .

Mode-S 155C2B frequently asked

What is Mode-S code 155C2B?
155C2B is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89131.
Where is Mode-S 155C2B registered?
Mode-S code 155C2B is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C2B broadcasting right now?
No active broadcast right now. Last signal was 6d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 155C2B, octal 05256053, decimal 1,399,851.
What flights does 155C2B operate?
Mode-S 155C2B has broadcast 20 distinct callsigns, including SDM6535, SDM6492, SDM6491, SDM6177, SDM6173.