Apparatus

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sensors Mode-S transponder

155C3A

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89146 · SUKHOI Superjet 100-95

Hex
155C3A
Octal
05256072
Decimal
1,399,866
Country
RU
Tail
RA-89146
Type
SU95
No current signal · last broadcast Jul 25, 16:20 UTC
Flights observed
73
Distinct callsigns
20
Country
RU
Last broadcast
Jul 25, 16:20 UTC

Last known position

Most recent position reported by Mode-S 155C3A.

Country allocation

The ICAO 24-bit address 155C3A 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
SDM6321 - 6 2026-07-20
SDM6322 - 5 2026-07-08
SDM6588 - 4 2026-07-19
SDM6344 Rossiya - Russian Airlines 4 2026-06-05
SDM6330 Rossiya - Russian Airlines 4 2026-06-09
SDM6329 Rossiya - Russian Airlines 4 2026-06-09
SDM6327 - 3 2026-07-08
SDM6949 Rossiya - Russian Airlines 2 2026-07-24
SDM6768 Rossiya - Russian Airlines 2 2026-06-04
SDM6767 Rossiya - Russian Airlines 2 2026-06-04
SDM6599 - 2 2026-05-04
SDM6477 - 2 2026-06-18
SDM6396 Rossiya - Russian Airlines 2 2026-05-21
SDM6346 Rossiya - Russian Airlines 2 2026-06-01
SDM6183 Rossiya - Russian Airlines 2 2026-05-26
SDM7001 Rossiya - Russian Airlines 1 2026-06-08
SDM6993 Rossiya - Russian Airlines 1 2026-06-15
SDM6950 Rossiya - Russian Airlines 1 2026-07-24
SDM6582 Rossiya - Russian Airlines 1 2026-07-23
SDM6581 Rossiya - Russian Airlines 1 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 SDM6336 SVO → ARH Jul 25, 15:20 UTCJul 25, 16:20 UTC1h 0m
2026-07-25 SDM6335 SVO → ARH Jul 25, 12:55 UTCJul 25, 13:25 UTC30m
2026-07-24 SDM6950 EVN → KUF Jul 24, 17:05 UTCJul 25, 13:25 UTC20h 20m
2026-07-24 SDM6949 KUF → EVN Jul 24, 15:30 UTCJul 24, 15:40 UTC10m
2026-07-23 SDM6582 PEE → LED Jul 23, 01:45 UTCJul 23, 02:25 UTC40m
2026-07-22 SDM6581 LED → PEE Jul 22, 21:20 UTCJul 22, 21:40 UTC20m
2026-07-22 SDM6345 - Jul 22, 13:55 UTCJul 22, 14:10 UTC15m
2026-07-20 SDM6321 - Jul 20, 09:10 UTCJul 20, 09:55 UTC45m
2026-07-19 SDM6340 - Jul 19, 20:25 UTCJul 19, 20:45 UTC20m
2026-07-19 SDM6588 - Jul 19, 02:25 UTCJul 19, 03:15 UTC50m
2026-07-18 SDM6334 KGD → LED Jul 18, 11:35 UTCJul 18, 12:30 UTC55m
2026-07-17 SDM6333 - Jul 17, 17:05 UTCJul 18, 09:35 UTC16h 31m
2026-07-09 SDM6328 - Jul 9, 05:25 UTCJul 9, 06:45 UTC1h 20m
2026-07-08 SDM6327 - Jul 8, 23:55 UTCJul 9, 00:30 UTC35m
2026-07-08 SDM6322 - Jul 8, 20:50 UTCJul 8, 21:45 UTC55m
2026-07-08 SDM6321 - Jul 8, 18:00 UTCJul 8, 18:35 UTC35m
2026-07-07 SDM6322 - Jul 7, 11:55 UTCJul 7, 13:00 UTC1h 5m
2026-07-07 SDM6321 - Jul 7, 09:10 UTCJul 7, 09:45 UTC35m
2026-06-22 SDM6381 SVO → SVO Jun 22, 04:15 UTCJun 22, 04:34 UTC20m
2026-06-18 SDM6477 - Jun 18, 15:40 UTCJun 18, 16:00 UTC20m
2026-06-18 SDM6510 - Jun 18, 05:50 UTCJun 18, 06:20 UTC30m
2026-06-15 SDM6993 SVO → ARH Jun 15, 16:04 UTCJun 15, 16:30 UTC25m
2026-06-15 SDM6171 - Jun 15, 07:40 UTCJun 15, 07:50 UTC10m
2026-06-12 SDM6477 SVO → MMK Jun 12, 09:15 UTCJun 12, 09:25 UTC10m
2026-06-11 SDM6545 SVO → PEZ Jun 11, 16:10 UTCJun 11, 16:30 UTC20m
2026-06-11 SDM6537 SVO → SVO Jun 11, 09:15 UTCJun 11, 09:40 UTC25m
2026-06-10 SDM6375 SVO → IJK Jun 10, 11:15 UTCJun 10, 11:35 UTC20m
2026-06-09 SDM6330 KGD → LED Jun 9, 17:00 UTCJun 9, 18:25 UTC1h 25m
2026-06-09 SDM6329 LED → KGD Jun 9, 14:45 UTCJun 9, 15:30 UTC45m
2026-06-08 SDM7001 - Jun 8, 17:50 UTCJun 8, 18:40 UTC50m
2026-06-05 SDM6344 MMK → LED Jun 5, 03:10 UTCJun 5, 03:25 UTC15m
2026-06-04 SDM6768 PEZ → LED Jun 4, 10:10 UTCJun 4, 10:25 UTC15m
2026-06-04 SDM6767 LED → PEZ Jun 4, 06:50 UTCJun 4, 08:15 UTC1h 25m
2026-06-02 SDM6344 MMK → LED Jun 2, 03:05 UTCJun 2, 03:15 UTC10m
2026-06-01 SDM6346 MMK → LED Jun 1, 16:55 UTCJun 1, 17:50 UTC55m
2026-06-01 SDM6344 MMK → LED Jun 1, 03:10 UTCJun 1, 03:25 UTC15m
2026-05-31 SDM6322 KGD → LED May 31, 11:20 UTCMay 31, 12:35 UTC1h 15m
2026-05-31 SDM6321 LED → KGD May 31, 08:55 UTCMay 31, 09:40 UTC45m
2026-05-30 SDM6327 LED → KGD May 30, 20:35 UTCMay 30, 21:15 UTC40m
2026-05-30 SDM6330 KGD → LED May 30, 16:45 UTCMay 30, 18:05 UTC1h 20m
2026-05-30 SDM6329 LED → KGD May 30, 14:35 UTCMay 30, 15:15 UTC40m
2026-05-29 SDM6329 LED → KGD May 29, 19:55 UTCMay 30, 15:15 UTC19h 20m
2026-05-29 SDM6949 KUF → EVN May 29, 18:15 UTCMay 29, 18:30 UTC15m
2026-05-29 SDM6233 LED → KUF May 29, 09:35 UTCMay 29, 10:30 UTC55m
2026-05-28 SDM6322 KGD → LED May 28, 11:20 UTCMay 28, 12:25 UTC1h 5m
2026-05-28 SDM6321 LED → KGD May 28, 08:50 UTCMay 28, 09:40 UTC50m
2026-05-26 SDM6183 LED → VKO May 26, 17:59 UTCMay 26, 18:30 UTC30m
2026-05-26 SDM6231 LED → KUF May 26, 09:25 UTCMay 26, 09:45 UTC20m
2026-05-24 SDM6344 MMK → LED May 24, 03:15 UTCMay 24, 03:25 UTC10m
2026-05-23 SDM6588 SCW → LED May 23, 02:35 UTCMay 23, 03:25 UTC50m

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-89146 page for operator, model, and routing details .

Mode-S 155C3A frequently asked

What is Mode-S code 155C3A?
155C3A is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89146.
Where is Mode-S 155C3A registered?
Mode-S code 155C3A is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C3A broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 16:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 155C3A, octal 05256072, decimal 1,399,866.
What flights does 155C3A operate?
Mode-S 155C3A has broadcast 20 distinct callsigns, including SDM6321, SDM6322, SDM6588, SDM6344, SDM6330.