Apparatus

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sensors Mode-S transponder

155C56

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89174 · SUKHOI Superjet 100-95

Hex
155C56
Octal
05256126
Decimal
1,399,894
Country
RU
Tail
RA-89174
Type
SU95
No current signal · last broadcast 12h ago
Flights observed
48
Distinct callsigns
20
Country
RU
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 155C56.

Country allocation

The ICAO 24-bit address 155C56 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
SDM6913 Rossiya - Russian Airlines 5 2026-05-04
SDM6882 Rossiya - Russian Airlines 5 2026-05-03
SDM6881 Rossiya - Russian Airlines 3 2026-05-03
SDM6842 Rossiya - Russian Airlines 3 2026-04-27
SDM6677 Rossiya - Russian Airlines 3 2026-05-02
SDM6845 Rossiya - Russian Airlines 2 2026-04-22
SDM6841 Rossiya - Russian Airlines 2 2026-04-27
SDM6799 Rossiya - Russian Airlines 2 2026-05-05
SDM6792 Rossiya - Russian Airlines 2 2026-04-24
SDM6791 Rossiya - Russian Airlines 2 2026-04-30
SDM6722 Rossiya - Russian Airlines 2 2026-04-23
SDM6330 Rossiya - Russian Airlines 2 2026-05-24
SDM6329 Rossiya - Russian Airlines 2 2026-05-24
SDM6885 Rossiya - Russian Airlines 1 2026-05-29
SDM6867 - 1 2026-04-13
SDM6819 Rossiya - Russian Airlines 1 2026-04-15
SDM6721 Rossiya - Russian Airlines 1 2026-04-23
SDM6688 Rossiya - Russian Airlines 1 2026-05-02
SDM6678 - 1 2026-04-17
SDM6635 Rossiya - Russian Airlines 1 2026-04-28

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
2026-05-29 SDM6885 SVO → IJK May 29, 18:30 UTCMay 29, 18:55 UTC25m
2026-05-29 SDM6375 SVO → IJK May 29, 10:15 UTCMay 29, 10:35 UTC20m
2026-05-26 SDM6235 SVO → GOJ May 26, 17:55 UTCMay 26, 18:19 UTC25m
2026-05-24 SDM6330 KGD → LED May 24, 17:10 UTCMay 24, 18:20 UTC1h 10m
2026-05-24 SDM6329 LED → KGD May 24, 14:35 UTCMay 24, 15:20 UTC45m
2026-05-21 SDM6330 KGD → LED May 21, 18:45 UTCMay 21, 20:20 UTC1h 35m
2026-05-21 SDM6329 LED → KGD May 21, 14:45 UTCMay 21, 15:25 UTC40m
2026-05-14 SDM6396 MMK → LED May 14, 02:25 UTCMay 14, 14:20 UTC11h 55m
2026-05-13 SDM6346 MMK → LED May 13, 04:10 UTCMay 13, 18:10 UTC14h 0m
2026-05-09 SDM6327 LED → KGD May 9, 20:44 UTCMay 9, 21:14 UTC30m
2026-05-08 SDM6446 KVK → LED May 8, 09:14 UTCMay 8, 12:34 UTC3h 20m
2026-05-05 SDM6799 KJA → SVX May 5, 15:01 UTCMay 5, 15:45 UTC45m
2026-05-04 SDM6799 KJA → SVX May 4, 20:00 UTCMay 5, 15:45 UTC19h 45m
2026-05-04 SDM6913 KJA → CEK May 4, 14:45 UTCMay 4, 20:40 UTC5h 56m
2026-05-03 SDM6913 KJA → CEK May 3, 20:00 UTCMay 4, 15:30 UTC19h 30m
2026-05-03 SDM6913 KJA → CEK May 3, 14:40 UTCMay 3, 20:40 UTC6h 0m
2026-05-03 SDM6882 IKT → KJA May 3, 07:25 UTCMay 3, 07:40 UTC15m
2026-05-03 SDM6881 KJA → IKT May 3, 05:45 UTCMay 3, 06:05 UTC20m
2026-05-02 SDM6688 IKT → KJA May 2, 18:20 UTCMay 2, 18:30 UTC10m
2026-05-02 SDM6677 KJA → IKT May 2, 17:00 UTCMay 2, 17:10 UTC10m
2026-04-30 SDM6791 KJA → SVX Apr 30, 09:25 UTCMay 1, 02:15 UTC16h 50m
2026-04-29 SDM6677 KJA → IKT Apr 29, 15:50 UTCApr 29, 16:05 UTC15m
2026-04-28 SDM6635 KJA → HRB Apr 28, 14:10 UTCApr 29, 06:35 UTC16h 25m
2026-04-27 SDM6842 SGC → KJA Apr 27, 20:20 UTCApr 28, 14:15 UTC17h 55m
2026-04-27 SDM6841 KJA → SGC Apr 27, 16:10 UTCApr 28, 14:15 UTC22h 5m
2026-04-27 SDM6841 KJA → SGC Apr 27, 07:10 UTCApr 27, 20:50 UTC13h 40m
2026-04-27 SDM6882 IKT → KJA Apr 27, 03:10 UTCApr 27, 03:30 UTC20m
2026-04-26 SDM6913 KJA → CEK Apr 26, 14:40 UTCApr 27, 01:20 UTC10h 40m
2026-04-26 SDM6913 KJA → CEK Apr 26, 04:30 UTCApr 27, 01:20 UTC20h 50m
2026-04-26 SDM6881 KJA → IKT Apr 26, 02:05 UTCApr 26, 02:25 UTC20m
2026-04-24 SDM6792 SVX → KJA Apr 24, 18:00 UTCApr 25, 14:05 UTC20h 5m
2026-04-23 SDM6722 ALA → KJA Apr 23, 19:40 UTCApr 24, 13:10 UTC17h 30m
2026-04-23 SDM6722 ALA → KJA Apr 23, 15:35 UTCApr 24, 13:10 UTC21h 34m
2026-04-23 SDM6721 KJA → ALA Apr 23, 15:05 UTCApr 24, 13:10 UTC22h 5m
2026-04-22 SDM6845 KJA → OMS Apr 22, 09:05 UTCApr 22, 13:20 UTC4h 15m
2026-04-21 SDM6845 KJA → OMS Apr 21, 14:15 UTCApr 22, 13:20 UTC23h 5m
2026-04-21 SDM6882 IKT → KJA Apr 21, 04:30 UTCApr 21, 14:15 UTC9h 45m
2026-04-20 SDM6881 KJA → IKT Apr 20, 16:25 UTCApr 21, 02:40 UTC10h 15m
2026-04-20 SDM6842 SGC → KJA Apr 20, 02:25 UTCApr 20, 20:40 UTC18h 15m
2026-04-19 SDM6882 IKT → KJA Apr 19, 04:35 UTCApr 19, 04:45 UTC10m
2026-04-17 SDM6678 - Apr 17, 17:35 UTCApr 17, 17:50 UTC15m
2026-04-17 SDM6677 - Apr 17, 15:40 UTCApr 17, 15:55 UTC15m
2026-04-17 SDM6792 SVX → KJA Apr 17, 09:20 UTCApr 17, 10:00 UTC40m
2026-04-17 SDM6791 KJA → SVX Apr 17, 03:55 UTCApr 17, 04:35 UTC41m
2026-04-17 SDM6842 SGC → KJA Apr 17, 00:20 UTCApr 17, 00:50 UTC30m
2026-04-15 SDM6819 KJA → HTA Apr 15, 01:55 UTCApr 15, 02:05 UTC10m
2026-04-13 SDM6882 - Apr 13, 03:20 UTCApr 13, 03:35 UTC15m
2026-04-13 SDM6867 - Apr 13, 01:55 UTCApr 13, 02:05 UTC10m

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-89174 page for operator, model, and routing details .

Mode-S 155C56 frequently asked

What is Mode-S code 155C56?
155C56 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89174.
Where is Mode-S 155C56 registered?
Mode-S code 155C56 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C56 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 155C56, octal 05256126, decimal 1,399,894.
What flights does 155C56 operate?
Mode-S 155C56 has broadcast 20 distinct callsigns, including SDM6913, SDM6882, SDM6881, SDM6842, SDM6677.