Apparatus

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sensors Mode-S transponder

155C53

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89171 · SUKHOI Superjet 100-95

Hex
155C53
Octal
05256123
Decimal
1,399,891
Country
RU
Tail
RA-89171
Type
SU95
No current signal · last broadcast 18h ago
Flights observed
65
Distinct callsigns
20
Country
RU
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 155C53.

Country allocation

The ICAO 24-bit address 155C53 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
SDM6324 Rossiya - Russian Airlines 4 2026-05-18
SDM6322 Rossiya - Russian Airlines 4 2026-05-26
SDM6321 Rossiya - Russian Airlines 4 2026-05-26
SDM6037 Rossiya - Russian Airlines 4 2026-05-18
SDM6448 Rossiya - Russian Airlines 3 2026-04-21
SDM6346 Rossiya - Russian Airlines 3 2026-04-26
SDM6344 - 3 2026-04-13
SDM6329 Rossiya - Russian Airlines 3 2026-05-26
SDM6323 Rossiya - Russian Airlines 3 2026-05-18
SDM6301 - 3 2026-04-29
SDM6588 Rossiya - Russian Airlines 2 2026-05-08
SDM6447 - 2 2026-04-14
SDM6446 Rossiya - Russian Airlines 2 2026-04-30
SDM6442 Rossiya - Russian Airlines 2 2026-05-05
SDM6342 Rossiya - Russian Airlines 2 2026-05-15
SDM6330 Rossiya - Russian Airlines 2 2026-05-26
SDM6117 Rossiya - Russian Airlines 2 2026-05-29
SDM6792 Rossiya - Russian Airlines 1 2026-05-06
SDM6791 Rossiya - Russian Airlines 1 2026-05-07
SDM6599 - 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 SDM6117 LED → VOG May 29, 06:20 UTCMay 29, 07:30 UTC1h 10m
2026-05-26 SDM6330 KGD → LED May 26, 17:09 UTCMay 26, 18:19 UTC1h 10m
2026-05-26 SDM6329 LED → KGD May 26, 13:54 UTCMay 26, 15:20 UTC1h 25m
2026-05-26 SDM6322 KGD → LED May 26, 11:30 UTCMay 26, 12:35 UTC1h 5m
2026-05-26 SDM6321 LED → KGD May 26, 08:30 UTCMay 26, 09:55 UTC1h 25m
2026-05-24 SDM6418 SVX → LED May 24, 14:10 UTCMay 24, 15:30 UTC1h 20m
2026-05-24 SDM6417 LED → SVX May 24, 11:55 UTCMay 24, 12:45 UTC50m
2026-05-18 SDM6037 LED → VKO May 18, 13:15 UTCMay 18, 13:30 UTC15m
2026-05-18 SDM6324 KGD → LED May 18, 08:55 UTCMay 18, 09:55 UTC1h 0m
2026-05-18 SDM6323 LED → KGD May 18, 06:35 UTCMay 18, 07:15 UTC40m
2026-05-17 SDM6329 LED → KGD May 17, 14:40 UTCMay 17, 15:15 UTC35m
2026-05-16 SDM6037 LED → VKO May 16, 12:05 UTCMay 16, 12:25 UTC20m
2026-05-15 SDM6342 MMK → LED May 15, 07:05 UTCMay 15, 08:10 UTC1h 5m
2026-05-12 SDM6327 LED → KGD May 12, 20:40 UTCMay 12, 21:25 UTC45m
2026-05-12 SDM6330 KGD → LED May 12, 17:20 UTCMay 12, 18:15 UTC55m
2026-05-12 SDM6329 LED → KGD May 12, 14:45 UTCMay 12, 15:25 UTC40m
2026-05-11 SDM6320 KGD → LED May 11, 15:05 UTCMay 11, 15:50 UTC45m
2026-05-11 SDM6319 LED → KGD May 11, 12:20 UTCMay 11, 13:05 UTC45m
2026-05-09 SDM6107 LED → GOJ May 9, 14:55 UTCMay 9, 15:15 UTC20m
2026-05-08 SDM6403 LED → SVX May 8, 15:20 UTCMay 8, 15:35 UTC15m
2026-05-08 SDM6324 KGD → LED May 8, 11:19 UTCMay 8, 12:34 UTC1h 15m
2026-05-08 SDM6588 SCW → LED May 8, 02:24 UTCMay 8, 09:54 UTC7h 30m
2026-05-07 SDM6791 KJA → SVX May 7, 12:15 UTCMay 7, 13:00 UTC45m
2026-05-06 SDM6792 SVX → KJA May 6, 14:00 UTCMay 6, 14:35 UTC35m
2026-05-05 SDM6442 SGC → LED May 5, 17:05 UTCMay 6, 10:15 UTC17h 10m
2026-05-05 SDM6442 SGC → LED May 5, 13:35 UTCMay 6, 10:15 UTC20h 40m
2026-05-04 SDM6413 LED → UFA May 4, 13:50 UTCMay 4, 14:10 UTC20m
2026-05-04 SDM6341 LED → MMK May 4, 04:15 UTCMay 4, 04:29 UTC15m
2026-05-03 SDM6037 LED → VKO May 3, 12:15 UTCMay 3, 12:35 UTC20m
2026-05-02 SDM6322 KGD → LED May 2, 13:15 UTCMay 2, 14:20 UTC1h 5m
2026-05-02 SDM6321 LED → KGD May 2, 10:55 UTCMay 2, 11:35 UTC40m
2026-05-01 SDM6117 LED → VOG May 1, 07:45 UTCMay 1, 08:20 UTC35m
2026-04-30 SDM6446 KVK → LED Apr 30, 09:30 UTCApr 30, 12:35 UTC3h 5m
2026-04-29 SDM6301 - Apr 29, 13:10 UTCApr 29, 13:55 UTC45m
2026-04-28 SDM6322 KGD → LED Apr 28, 10:55 UTCApr 28, 12:30 UTC1h 35m
2026-04-28 SDM6321 LED → KGD Apr 28, 02:25 UTCApr 28, 09:30 UTC7h 5m
2026-04-27 SDM6588 SCW → LED Apr 27, 02:30 UTCApr 27, 03:10 UTC40m
2026-04-26 SDM6346 MMK → LED Apr 26, 15:45 UTCApr 26, 19:15 UTC3h 30m
2026-04-24 SDM6404 SVX → LED Apr 24, 19:10 UTCApr 24, 20:30 UTC1h 20m
2026-04-24 SDM6322 KGD → LED Apr 24, 11:05 UTCApr 24, 12:55 UTC1h 50m
2026-04-24 SDM6321 LED → KGD Apr 24, 08:10 UTCApr 24, 09:35 UTC1h 25m
2026-04-23 SDM6599 LED → LED Apr 23, 16:25 UTCApr 23, 16:55 UTC30m
2026-04-22 SDM6396 MMK → LED Apr 22, 20:10 UTCApr 23, 14:10 UTC18h 0m
2026-04-22 SDM6037 LED → VKO Apr 22, 13:10 UTCApr 22, 14:35 UTC1h 25m
2026-04-21 SDM6448 KVK → LED Apr 21, 16:45 UTCApr 21, 20:25 UTC3h 40m
2026-04-19 SDM6448 KVK → LED Apr 19, 09:50 UTCApr 19, 20:30 UTC10h 40m
2026-04-19 SDM6342 MMK → LED Apr 19, 04:30 UTCApr 19, 08:00 UTC3h 30m
2026-04-16 SDM6446 KVK → LED Apr 16, 11:44 UTCApr 16, 12:39 UTC55m
2026-04-16 SDM6445 LED → KVK Apr 16, 09:15 UTCApr 16, 09:29 UTC15m
2026-04-16 SDM6328 KGD → LED Apr 16, 05:45 UTCApr 16, 07:05 UTC1h 20m

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-89171 page for operator, model, and routing details .

Mode-S 155C53 frequently asked

What is Mode-S code 155C53?
155C53 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89171.
Where is Mode-S 155C53 registered?
Mode-S code 155C53 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C53 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 155C53, octal 05256123, decimal 1,399,891.
What flights does 155C53 operate?
Mode-S 155C53 has broadcast 20 distinct callsigns, including SDM6324, SDM6322, SDM6321, SDM6037, SDM6448.