Apparatus

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sensors Mode-S transponder

155C61

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89185 · SUKHOI Superjet 100-95

Hex
155C61
Octal
05256141
Decimal
1,399,905
Country
RU
Tail
RA-89185
Type
SU95
No current signal · last broadcast Jul 26, 17:25 UTC
Flights observed
51
Distinct callsigns
20
Country
RU
Last broadcast
Jul 26, 17:25 UTC

Last known position

Most recent position reported by Mode-S 155C61.

Country allocation

The ICAO 24-bit address 155C61 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
SDM6381 Rossiya - Russian Airlines 5 2026-05-28
SDM6885 Rossiya - Russian Airlines 4 2026-06-04
SDM6993 Rossiya - Russian Airlines 3 2026-05-29
SDM6334 Rossiya - Russian Airlines 3 2026-07-22
SDM6768 Rossiya - Russian Airlines 2 2026-06-20
SDM6588 - 2 2026-07-17
SDM6545 Rossiya - Russian Airlines 2 2026-05-22
SDM6396 - 2 2026-06-16
SDM6375 Rossiya - Russian Airlines 2 2026-06-07
SDM6346 - 2 2026-06-30
SDM6345 - 2 2026-07-16
SDM6332 - 2 2026-07-12
SDM6331 - 2 2026-07-12
SDM6327 - 2 2026-06-30
SDM6950 Rossiya - Russian Airlines 1 2026-07-26
SDM6886 Rossiya - Russian Airlines 1 2026-05-16
SDM6586 - 1 2026-06-17
SDM6382 Rossiya - Russian Airlines 1 2026-05-18
SDM6360 - 1 2026-07-16
SDM6344 - 1 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SDM6950 EVN → KUF Jul 26, 16:55 UTCJul 26, 17:25 UTC30m
2026-07-22 SDM6334 KGD → LED Jul 22, 13:50 UTCJul 23, 07:40 UTC17h 50m
2026-07-22 SDM6334 KGD → LED Jul 22, 11:25 UTCJul 23, 07:40 UTC20h 15m
2026-07-17 SDM6588 - Jul 17, 02:30 UTCJul 17, 03:05 UTC35m
2026-07-16 SDM6345 - Jul 16, 17:35 UTCJul 16, 17:45 UTC10m
2026-07-16 SDM6360 - Jul 16, 14:15 UTCJul 16, 15:19 UTC1h 5m
2026-07-12 SDM6332 - Jul 12, 21:05 UTCJul 12, 21:55 UTC50m
2026-07-12 SDM6331 - Jul 12, 18:40 UTCJul 12, 19:15 UTC35m
2026-07-12 SDM6336 - Jul 12, 15:15 UTCJul 12, 16:15 UTC1h 0m
2026-07-12 SDM6335 - Jul 12, 12:45 UTCJul 12, 13:25 UTC40m
2026-07-02 SDM6344 - Jul 2, 03:05 UTCJul 2, 03:25 UTC20m
2026-06-30 SDM6327 - Jun 30, 21:00 UTCJun 30, 21:35 UTC35m
2026-06-30 SDM6346 - Jun 30, 16:25 UTCJun 30, 16:40 UTC15m
2026-06-28 SDM6332 - Jun 28, 20:25 UTCJun 28, 21:20 UTC55m
2026-06-28 SDM6331 - Jun 28, 18:00 UTCJun 28, 18:40 UTC40m
2026-06-26 SDM6327 - Jun 26, 20:44 UTCJun 26, 21:15 UTC30m
2026-06-24 SDM6346 - Jun 24, 16:24 UTCJun 24, 17:55 UTC1h 30m
2026-06-24 SDM6345 - Jun 24, 14:00 UTCJun 24, 14:09 UTC10m
2026-06-21 SDM6324 - Jun 21, 09:00 UTCJun 21, 10:04 UTC1h 5m
2026-06-21 SDM6323 - Jun 21, 06:50 UTCJun 21, 07:14 UTC25m
2026-06-20 SDM6768 PEZ → LED Jun 20, 10:20 UTCJun 21, 07:14 UTC20h 55m
2026-06-20 SDM6768 PEZ → LED Jun 20, 10:04 UTCJun 21, 07:14 UTC21h 10m
2026-06-19 SDM6105 LED → GOJ Jun 19, 07:49 UTCJun 19, 08:24 UTC35m
2026-06-18 SDM6334 KGD → LED Jun 18, 06:40 UTCJun 18, 07:30 UTC50m
2026-06-17 SDM6028 - Jun 17, 14:05 UTCJun 17, 15:10 UTC1h 5m
2026-06-17 SDM6027 LED → VKO Jun 17, 11:30 UTCJun 17, 12:55 UTC1h 25m
2026-06-17 SDM6586 - Jun 17, 07:40 UTCJun 17, 08:15 UTC35m
2026-06-16 SDM6340 MMK → LED Jun 16, 20:05 UTCJun 16, 20:25 UTC20m
2026-06-16 SDM6396 - Jun 16, 10:25 UTCJun 16, 18:15 UTC7h 50m
2026-06-15 SDM6588 SCW → LED Jun 15, 02:30 UTCJun 15, 03:15 UTC45m
2026-06-11 SDM6396 MMK → LED Jun 11, 09:50 UTCJun 11, 14:20 UTC4h 30m
2026-06-07 SDM6375 SVO → IJK Jun 7, 10:05 UTCJun 7, 10:20 UTC15m
2026-06-04 SDM6885 SVO → IJK Jun 4, 16:20 UTCJun 4, 16:50 UTC30m
2026-06-02 SDM6193 SVO → CEK Jun 2, 09:50 UTCJun 2, 10:15 UTC25m
2026-06-01 SDM6885 SVO → IJK Jun 1, 16:15 UTCJun 1, 16:40 UTC25m
2026-05-30 SDM6885 SVO → IJK May 30, 16:25 UTCMay 30, 16:50 UTC25m
2026-05-29 SDM6993 SVO → ARH May 29, 16:00 UTCMay 29, 16:15 UTC15m
2026-05-28 SDM6885 SVO → IJK May 28, 16:40 UTCMay 28, 17:05 UTC25m
2026-05-28 SDM6381 SVO → IJK May 28, 04:30 UTCMay 28, 04:50 UTC20m
2026-05-26 SDM6993 SVO → ARH May 26, 16:10 UTCMay 26, 16:35 UTC25m
2026-05-26 SDM6381 SVO → IJK May 26, 04:30 UTCMay 26, 04:54 UTC25m
2026-05-23 SDM6235 SVO → GOJ May 23, 18:05 UTCMay 23, 18:30 UTC26m
2026-05-22 SDM6545 SVO → PEZ May 22, 16:05 UTCMay 22, 16:45 UTC40m
2026-05-18 SDM6993 SVO → ARH May 18, 16:10 UTCMay 18, 16:30 UTC20m
2026-05-18 SDM6382 IJK → SVO May 18, 07:00 UTCMay 18, 07:30 UTC30m
2026-05-16 SDM6886 IJK → SVO May 16, 19:05 UTCMay 16, 19:45 UTC40m
2026-04-30 SDM6381 SVO → IJK Apr 30, 10:30 UTCApr 30, 10:55 UTC25m
2026-04-27 SDM6381 SVO → IJK Apr 27, 05:00 UTCApr 27, 05:20 UTC20m
2026-04-26 SDM6375 SVO → IJK Apr 26, 10:20 UTCApr 26, 10:40 UTC20m
2026-04-20 SDM6381 SVO → IJK Apr 20, 04:25 UTCApr 20, 04:50 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 RA-89185 page for operator, model, and routing details .

Mode-S 155C61 frequently asked

What is Mode-S code 155C61?
155C61 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89185.
Where is Mode-S 155C61 registered?
Mode-S code 155C61 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C61 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 17:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 155C61, octal 05256141, decimal 1,399,905.
What flights does 155C61 operate?
Mode-S 155C61 has broadcast 20 distinct callsigns, including SDM6381, SDM6885, SDM6993, SDM6334, SDM6768.