Apparatus

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sensors Mode-S transponder

155C29

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89129 · SUKHOI Superjet 100-95

Hex
155C29
Octal
05256051
Decimal
1,399,849
Country
RU
Tail
RA-89129
Type
SU95
No current signal · last broadcast 2d ago
Flights observed
66
Distinct callsigns
20
Country
RU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 155C29.

Country allocation

The ICAO 24-bit address 155C29 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
SDM6519 Rossiya - Russian Airlines 3 2026-06-10
SDM6492 - 3 2026-07-09
SDM6490 - 3 2026-06-14
SDM6197 Rossiya - Russian Airlines 3 2026-06-13
SDM6535 Rossiya - Russian Airlines 2 2026-06-12
SDM6235 - 2 2026-07-11
SDM6173 Rossiya - Russian Airlines 2 2026-06-15
SDM6059 Rossiya - Russian Airlines 2 2026-06-10
SDM6057 Rossiya - Russian Airlines 2 2026-06-08
SDM6025 Rossiya - Russian Airlines 2 2026-06-22
SDM6993 Rossiya - Russian Airlines 1 2026-06-08
SDM6827 Rossiya - Russian Airlines 1 2026-06-07
SDM6809 Rossiya - Russian Airlines 1 2026-06-17
SDM6707 - 1 2026-07-08
SDM6699 Rossiya - Russian Airlines 1 2026-05-29
SDM6579 Rossiya - Russian Airlines 1 2026-05-29
SDM6539 - 1 2026-06-24
SDM6529 - 1 2026-07-05
SDM6503 Rossiya - Russian Airlines 1 2026-05-28
SDM6491 Rossiya - Russian Airlines 1 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-15 SDM6408 - Jul 15, 18:05 UTCJul 15, 18:30 UTC25m
2026-07-15 SDM6407 - Jul 15, 15:30 UTCJul 15, 15:35 UTC5m
2026-07-15 SDM6399 SVO → SVO Jul 15, 07:40 UTCJul 15, 07:55 UTC15m
2026-07-11 SDM6235 - Jul 11, 18:10 UTCJul 11, 18:35 UTC25m
2026-07-09 SDM6492 - Jul 9, 06:45 UTCJul 9, 07:15 UTC30m
2026-07-08 SDM6707 - Jul 8, 21:10 UTCJul 8, 21:20 UTC10m
2026-07-05 SDM6529 - Jul 5, 06:15 UTCJul 5, 06:50 UTC35m
2026-07-01 SDM6235 - Jul 1, 17:55 UTCJul 1, 18:05 UTC10m
2026-06-29 SDM6492 - Jun 29, 07:25 UTCJun 29, 07:44 UTC20m
2026-06-24 SDM6539 SVO → SVO Jun 24, 22:14 UTCJun 24, 22:35 UTC20m
2026-06-24 SDM6199 - Jun 24, 14:29 UTCJun 24, 14:39 UTC10m
2026-06-24 SDM6253 SVO → GOJ Jun 24, 09:45 UTCJun 24, 10:04 UTC20m
2026-06-24 SDM6492 GSV → SVO Jun 24, 06:45 UTCJun 24, 06:55 UTC10m
2026-06-24 SDM6491 SVO → GSV Jun 24, 04:05 UTCJun 24, 04:30 UTC25m
2026-06-22 SDM6026 VKO → LED Jun 22, 11:50 UTCJun 22, 12:49 UTC1h 0m
2026-06-22 SDM6025 LED → VKO Jun 22, 09:14 UTCJun 22, 10:44 UTC1h 30m
2026-06-19 SDM6301 LED → LED Jun 19, 12:34 UTCJun 19, 13:54 UTC1h 20m
2026-06-17 SDM6809 SVO → LED Jun 17, 19:50 UTCJun 17, 20:45 UTC55m
2026-06-15 SDM6173 SVO → REN Jun 15, 10:45 UTCJun 15, 11:10 UTC25m
2026-06-14 SDM6490 GSV → GSV Jun 14, 20:25 UTCJun 14, 20:55 UTC30m
2026-06-13 SDM6197 SVO → KZN Jun 13, 08:35 UTCJun 13, 09:05 UTC30m
2026-06-12 SDM6535 SVO → UFA Jun 12, 10:05 UTCJun 12, 10:30 UTC25m
2026-06-12 SDM6351 SVO → GOJ Jun 12, 05:15 UTCJun 12, 05:40 UTC25m
2026-06-10 SDM6519 SVO → LED Jun 10, 15:35 UTCJun 10, 16:35 UTC1h 0m
2026-06-10 SDM6060 LED → SVO Jun 10, 10:50 UTCJun 10, 11:55 UTC1h 5m
2026-06-10 SDM6059 SVO → LED Jun 10, 08:20 UTCJun 10, 09:25 UTC1h 5m
2026-06-09 SDM6173 SVO → REN Jun 9, 10:10 UTCJun 9, 10:30 UTC20m
2026-06-09 SDM6061 SVO → KUF Jun 9, 03:45 UTCJun 9, 04:15 UTC30m
2026-06-08 SDM6993 SVO → ARH Jun 8, 16:10 UTCJun 8, 16:25 UTC15m
2026-06-08 SDM6057 SVO → LED Jun 8, 07:40 UTCJun 8, 08:35 UTC55m
2026-06-07 SDM6827 SVO → SKX Jun 7, 17:05 UTCJun 7, 17:30 UTC25m
2026-06-07 SDM6193 SVO → CEK Jun 7, 09:40 UTCJun 7, 10:00 UTC20m
2026-06-06 SDM6056 LED → SVO Jun 6, 12:49 UTCJun 6, 13:09 UTC20m
2026-06-05 SDM6490 GSV → SVO Jun 5, 19:15 UTCJun 5, 19:30 UTC15m
2026-06-05 SDM6535 SVO → UFA Jun 5, 10:10 UTCJun 5, 10:20 UTC10m
2026-06-02 SDM6197 SVO → KZN Jun 2, 08:40 UTCJun 2, 09:00 UTC20m
2026-06-01 SDM6490 GSV → SVO Jun 1, 19:20 UTCJun 1, 19:45 UTC25m
2026-06-01 SDM6489 SVO → GSV Jun 1, 16:45 UTCJun 1, 17:15 UTC30m
2026-06-01 SDM6059 SVO → LED Jun 1, 08:35 UTCJun 1, 09:30 UTC55m
2026-05-31 SDM6388 SCW → SVO May 31, 14:15 UTCMay 31, 14:45 UTC30m
2026-05-31 SDM6387 SVO → SCW May 31, 11:25 UTCMay 31, 11:55 UTC30m
2026-05-29 SDM6699 SVO → LED May 29, 22:20 UTCMay 29, 23:15 UTC55m
2026-05-29 SDM6579 SVO → LED May 29, 16:10 UTCMay 29, 16:35 UTC25m
2026-05-29 SDM6244 LED → SVO May 29, 11:40 UTCMay 29, 12:35 UTC55m
2026-05-29 SDM6243 SVO → LED May 29, 09:10 UTCMay 29, 10:10 UTC1h 0m
2026-05-28 SDM6097 SVO → LED May 28, 17:50 UTCMay 28, 18:45 UTC55m
2026-05-28 SDM6337 SVO → ARH May 28, 11:55 UTCMay 28, 12:15 UTC20m
2026-05-28 SDM6503 SVO → ARH May 28, 05:25 UTCMay 28, 05:40 UTC15m
2026-05-25 SDM6519 SVO → LED May 25, 15:10 UTCMay 25, 16:20 UTC1h 10m
2026-05-25 SDM6057 SVO → LED May 25, 07:40 UTCMay 25, 08:40 UTC1h 0m

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-89129 page for operator, model, and routing details .

Mode-S 155C29 frequently asked

What is Mode-S code 155C29?
155C29 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89129.
Where is Mode-S 155C29 registered?
Mode-S code 155C29 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C29 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 155C29, octal 05256051, decimal 1,399,849.
What flights does 155C29 operate?
Mode-S 155C29 has broadcast 20 distinct callsigns, including SDM6519, SDM6492, SDM6490, SDM6197, SDM6535.