Apparatus

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sensors Mode-S transponder

155C54

ICAO 24-bit transponder address · allocated to Russia

Currently assigned to RA-89172 · SUKHOI Superjet 100-95

Hex
155C54
Octal
05256124
Decimal
1,399,892
Country
RU
Tail
RA-89172
Type
SU95
No current signal · last broadcast 2h ago
Flights observed
85
Distinct callsigns
20
Country
RU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 155C54.

Country allocation

The ICAO 24-bit address 155C54 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
SDM6344 - 6 2026-07-15
SDM6324 Rossiya - Russian Airlines 6 2026-06-04
SDM6322 - 6 2026-06-16
SDM6321 - 6 2026-06-16
SDM6396 - 5 2026-06-29
SDM6588 Rossiya - Russian Airlines 3 2026-05-30
SDM6346 Rossiya - Russian Airlines 3 2026-06-04
SDM6330 - 3 2026-07-17
SDM6329 - 3 2026-07-17
SDM6814 Rossiya - Russian Airlines 2 2026-05-24
SDM6768 - 2 2026-07-01
SDM6599 - 2 2026-04-30
SDM6445 Rossiya - Russian Airlines 2 2026-05-28
SDM6417 Rossiya - Russian Airlines 2 2026-04-24
SDM6395 Rossiya - Russian Airlines 2 2026-05-31
SDM6343 - 2 2026-07-14
SDM6334 Rossiya - Russian Airlines 2 2026-06-07
SDM6325 - 2 2026-07-06
SDM6323 Rossiya - Russian Airlines 2 2026-05-27
SDM6301 - 2 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-18 SDM6336 - Jul 18, 16:50 UTCJul 18, 17:45 UTC55m
2026-07-18 SDM6335 - Jul 18, 13:55 UTCJul 18, 14:40 UTC45m
2026-07-18 SDM6010 VKO → LED Jul 18, 10:45 UTCJul 18, 11:50 UTC1h 5m
2026-07-18 SDM6009 LED → VKO Jul 18, 08:10 UTCJul 18, 09:10 UTC1h 0m
2026-07-18 SDM6308 ARH → LED Jul 18, 04:20 UTCJul 18, 04:55 UTC35m
2026-07-17 SDM6307 LED → ARH Jul 17, 19:35 UTCJul 17, 19:55 UTC20m
2026-07-17 SDM6330 - Jul 17, 17:05 UTCJul 17, 18:15 UTC1h 10m
2026-07-17 SDM6329 - Jul 17, 09:25 UTCJul 17, 15:40 UTC6h 15m
2026-07-15 SDM6344 - Jul 15, 03:15 UTCJul 15, 03:35 UTC20m
2026-07-14 SDM6343 - Jul 14, 14:10 UTCJul 14, 20:30 UTC6h 20m
2026-07-06 SDM6325 - Jul 6, 18:20 UTCJul 6, 18:55 UTC35m
2026-07-05 SDM6344 - Jul 5, 03:05 UTCJul 5, 03:25 UTC20m
2026-07-01 SDM6768 - Jul 1, 10:10 UTCJul 1, 11:55 UTC1h 45m
2026-07-01 SDM6767 LED → PEZ Jul 1, 07:15 UTCJul 1, 08:15 UTC1h 0m
2026-06-29 SDM6396 - Jun 29, 12:45 UTCJun 29, 13:04 UTC20m
2026-06-26 SDM6342 - Jun 26, 07:20 UTCJun 26, 08:10 UTC50m
2026-06-25 SDM6344 - Jun 25, 02:59 UTCJun 25, 03:20 UTC20m
2026-06-23 SDM6340 MMK → LED Jun 23, 20:19 UTCJun 23, 20:34 UTC15m
2026-06-23 SDM6768 - Jun 23, 13:15 UTCJun 23, 13:24 UTC10m
2026-06-20 SDM6396 - Jun 20, 10:29 UTCJun 20, 14:09 UTC3h 40m
2026-06-19 SDM6396 - Jun 19, 15:59 UTCJun 20, 14:09 UTC22h 10m
2026-06-16 SDM6322 - Jun 16, 11:25 UTCJun 16, 12:30 UTC1h 5m
2026-06-16 SDM6321 - Jun 16, 08:49 UTCJun 16, 09:40 UTC50m
2026-06-14 SDM6322 - Jun 14, 11:25 UTCJun 14, 12:55 UTC1h 30m
2026-06-14 SDM6321 - Jun 14, 09:05 UTCJun 14, 09:40 UTC35m
2026-06-13 SDM6344 MMK → LED Jun 13, 03:15 UTCJun 13, 03:35 UTC20m
2026-06-12 SDM6593 LED → KZN Jun 12, 10:05 UTCJun 12, 10:25 UTC20m
2026-06-07 SDM6334 KGD → LED Jun 7, 20:25 UTCJun 8, 07:25 UTC11h 0m
2026-06-07 SDM6331 LED → KGD Jun 7, 18:10 UTCJun 7, 18:40 UTC30m
2026-06-07 SDM6344 MMK → LED Jun 7, 03:10 UTCJun 7, 04:40 UTC1h 30m
2026-06-06 SDM6301 LED → LED Jun 6, 12:40 UTCJun 6, 13:00 UTC20m
2026-06-04 SDM6346 MMK → LED Jun 4, 14:10 UTCJun 4, 18:00 UTC3h 50m
2026-06-04 SDM6324 KGD → LED Jun 4, 09:20 UTCJun 4, 10:05 UTC45m
2026-06-03 SDM6324 KGD → LED Jun 3, 13:05 UTCJun 4, 10:05 UTC21h 0m
2026-06-03 SDM6324 KGD → LED Jun 3, 12:40 UTCJun 4, 10:05 UTC21h 25m
2026-06-03 SDM6334 KGD → LED Jun 3, 10:25 UTCJun 3, 11:35 UTC1h 10m
2026-06-03 SDM6333 LED → KGD Jun 3, 08:05 UTCJun 3, 08:50 UTC45m
2026-06-02 SDM6326 KGD → LED Jun 2, 18:10 UTCJun 2, 19:45 UTC1h 35m
2026-06-02 SDM6325 - Jun 2, 16:10 UTCJun 2, 16:55 UTC45m
2026-06-02 SDM6322 KGD → LED Jun 2, 11:50 UTCJun 2, 12:55 UTC1h 5m
2026-06-02 SDM6321 LED → KGD Jun 2, 09:35 UTCJun 2, 10:20 UTC45m
2026-05-31 SDM6396 MMK → LED May 31, 12:40 UTCMay 31, 13:50 UTC1h 10m
2026-05-31 SDM6395 LED → MMK May 31, 10:30 UTCMay 31, 10:40 UTC10m
2026-05-30 SDM6588 SCW → LED May 30, 02:30 UTCMay 30, 03:05 UTC35m
2026-05-28 SDM6445 LED → KVK May 28, 08:40 UTCMay 28, 12:35 UTC3h 55m
2026-05-27 SDM6324 KGD → LED May 27, 08:30 UTCMay 27, 10:00 UTC1h 30m
2026-05-27 SDM6323 LED → KGD May 27, 06:49 UTCMay 27, 07:15 UTC26m
2026-05-25 SDM6588 SCW → LED May 25, 02:30 UTCMay 25, 09:50 UTC7h 20m
2026-05-24 SDM6814 KVK → LED May 24, 09:30 UTCMay 24, 13:05 UTC3h 35m
2026-05-20 SDM6445 LED → KVK May 20, 09:30 UTCMay 20, 09:40 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-89172 page for operator, model, and routing details .

Mode-S 155C54 frequently asked

What is Mode-S code 155C54?
155C54 is an ICAO 24-bit transponder address. Allocated to Russia. Assigned to RA-89172.
Where is Mode-S 155C54 registered?
Mode-S code 155C54 is allocated to Russia (RU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 155C54 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 155C54, octal 05256124, decimal 1,399,892.
What flights does 155C54 operate?
Mode-S 155C54 has broadcast 20 distinct callsigns, including SDM6344, SDM6324, SDM6322, SDM6321, SDM6396.