sensors Mode-S transponder
155C55
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-89173 · SUKHOI Superjet 100-95
- Hex
- 155C55
- Octal
- 05256125
- Decimal
- 1,399,893
- Country
- RU
- Tail
- RA-89173
- Type
- SU95
- Flights observed
- 44
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 155C55 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 |
|---|---|---|---|
| SDM6845 | Rossiya - Russian Airlines | 7 | 2026-05-08 |
| SDM6882 | Rossiya - Russian Airlines | 6 | 2026-05-10 |
| SDM6881 | Rossiya - Russian Airlines | 6 | 2026-05-10 |
| SDM6843 | Rossiya - Russian Airlines | 6 | 2026-04-27 |
| SDM6841 | Rossiya - Russian Airlines | 3 | 2026-05-07 |
| SDM6844 | - | 2 | 2026-04-16 |
| SDM7003 | Rossiya - Russian Airlines | 1 | 2026-04-15 |
| SDM6846 | - | 1 | 2026-04-17 |
| SDM6821 | Rossiya - Russian Airlines | 1 | 2026-04-26 |
| SDM6799 | Rossiya - Russian Airlines | 1 | 2026-05-12 |
| SDM6796 | Rossiya - Russian Airlines | 1 | 2026-04-23 |
| SDM6678 | - | 1 | 2026-04-15 |
| SDM6677 | Rossiya - Russian Airlines | 1 | 2026-05-11 |
| SDM6636 | - | 1 | 2026-04-14 |
| SDM6635 | - | 1 | 2026-04-18 |
| SDM6404 | Rossiya - Russian Airlines | 1 | 2026-05-12 |
| SDM6342 | Rossiya - Russian Airlines | 1 | 2026-05-17 |
| SDM6334 | Rossiya - Russian Airlines | 1 | 2026-05-25 |
| SDM6330 | Rossiya - Russian Airlines | 1 | 2026-05-13 |
| SDM6329 | Rossiya - Russian Airlines | 1 | 2026-05-13 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-25 | SDM6334 | KGD → LED | May 25, 06:40 UTC | May 25, 07:40 UTC | 1h 0m |
| 2026-05-17 | SDM6342 | MMK → LED | May 17, 07:05 UTC | May 17, 14:10 UTC | 7h 5m |
| 2026-05-13 | SDM6330 | KGD → LED | May 13, 17:40 UTC | May 13, 18:25 UTC | 45m |
| 2026-05-13 | SDM6329 | LED → KGD | May 13, 15:00 UTC | May 13, 15:45 UTC | 45m |
| 2026-05-12 | SDM6404 | SVX → LED | May 12, 19:05 UTC | May 13, 15:45 UTC | 20h 40m |
| 2026-05-12 | SDM6799 | KJA → SVX | May 12, 15:10 UTC | May 12, 15:50 UTC | 40m |
| 2026-05-11 | SDM6677 | KJA → IKT | May 11, 15:35 UTC | May 11, 15:55 UTC | 20m |
| 2026-05-10 | SDM6882 | IKT → KJA | May 10, 04:29 UTC | May 10, 04:45 UTC | 15m |
| 2026-05-10 | SDM6881 | KJA → IKT | May 10, 02:34 UTC | May 10, 02:55 UTC | 20m |
| 2026-05-08 | SDM6845 | KJA → OMS | May 8, 09:09 UTC | May 8, 13:25 UTC | 4h 15m |
| 2026-05-08 | SDM6882 | IKT → KJA | May 8, 04:34 UTC | May 8, 04:44 UTC | 10m |
| 2026-05-07 | SDM6841 | KJA → SGC | May 7, 16:10 UTC | May 8, 02:55 UTC | 10h 45m |
| 2026-05-07 | SDM6841 | KJA → SGC | May 7, 04:25 UTC | May 8, 02:55 UTC | 22h 30m |
| 2026-05-07 | SDM6881 | KJA → IKT | May 7, 02:35 UTC | May 7, 02:50 UTC | 15m |
| 2026-05-06 | SDM6845 | KJA → OMS | May 6, 09:05 UTC | May 6, 21:35 UTC | 12h 29m |
| 2026-05-05 | SDM6845 | KJA → OMS | May 5, 19:55 UTC | May 6, 16:35 UTC | 20h 40m |
| 2026-05-05 | SDM6845 | KJA → OMS | May 5, 14:00 UTC | May 6, 13:15 UTC | 23h 15m |
| 2026-05-05 | SDM6882 | IKT → KJA | May 5, 04:35 UTC | May 5, 04:45 UTC | 10m |
| 2026-05-05 | SDM6881 | KJA → IKT | May 5, 02:35 UTC | May 5, 02:50 UTC | 15m |
| 2026-05-04 | SDM6841 | KJA → SGC | May 4, 16:20 UTC | May 4, 20:45 UTC | 4h 26m |
| 2026-05-01 | SDM6845 | KJA → OMS | May 1, 09:15 UTC | May 1, 13:30 UTC | 4h 15m |
| 2026-05-01 | SDM6882 | IKT → KJA | May 1, 04:30 UTC | May 1, 04:40 UTC | 10m |
| 2026-05-01 | SDM6881 | KJA → IKT | May 1, 02:35 UTC | May 1, 02:55 UTC | 20m |
| 2026-04-27 | SDM6843 | KJA → CEK | Apr 27, 14:45 UTC | Apr 27, 20:35 UTC | 5h 50m |
| 2026-04-26 | SDM6843 | KJA → CEK | Apr 26, 21:20 UTC | Apr 27, 20:35 UTC | 23h 15m |
| 2026-04-26 | SDM6843 | KJA → CEK | Apr 26, 20:55 UTC | Apr 27, 15:30 UTC | 18h 35m |
| 2026-04-26 | SDM6821 | KJA → TJM | Apr 26, 15:50 UTC | Apr 27, 15:15 UTC | 23h 25m |
| 2026-04-24 | SDM6845 | KJA → OMS | Apr 24, 09:10 UTC | Apr 24, 14:10 UTC | 5h 0m |
| 2026-04-24 | SDM6882 | IKT → KJA | Apr 24, 04:30 UTC | Apr 24, 04:40 UTC | 10m |
| 2026-04-24 | SDM6881 | KJA → IKT | Apr 24, 02:10 UTC | Apr 24, 02:25 UTC | 15m |
| 2026-04-23 | SDM6796 | FRU → KJA | Apr 23, 01:20 UTC | Apr 23, 07:40 UTC | 6h 20m |
| 2026-04-18 | SDM6635 | - | Apr 18, 14:15 UTC | Apr 18, 14:25 UTC | 10m |
| 2026-04-17 | SDM6846 | - | Apr 17, 13:20 UTC | Apr 17, 14:05 UTC | 45m |
| 2026-04-17 | SDM6845 | KJA → OMS | Apr 17, 10:10 UTC | Apr 17, 11:05 UTC | 55m |
| 2026-04-16 | SDM6844 | - | Apr 16, 20:05 UTC | Apr 16, 20:45 UTC | 40m |
| 2026-04-16 | SDM6843 | KJA → CEK | Apr 16, 15:15 UTC | Apr 16, 15:30 UTC | 15m |
| 2026-04-16 | SDM6843 | KJA → CEK | Apr 16, 14:45 UTC | Apr 16, 15:10 UTC | 25m |
| 2026-04-16 | SDM6882 | IKT → KJA | Apr 16, 04:24 UTC | Apr 16, 04:40 UTC | 15m |
| 2026-04-16 | SDM6881 | KJA → IKT | Apr 16, 02:04 UTC | Apr 16, 02:24 UTC | 20m |
| 2026-04-15 | SDM6678 | - | Apr 15, 17:40 UTC | Apr 15, 17:55 UTC | 15m |
| 2026-04-15 | SDM7003 | KJA → CEK | Apr 15, 07:05 UTC | Apr 15, 07:25 UTC | 20m |
| 2026-04-14 | SDM6636 | - | Apr 14, 20:25 UTC | Apr 14, 20:40 UTC | 15m |
| 2026-04-13 | SDM6844 | - | Apr 13, 20:05 UTC | Apr 13, 20:45 UTC | 40m |
| 2026-04-13 | SDM6843 | KJA → CEK | Apr 13, 15:00 UTC | Apr 13, 15:45 UTC | 45m |
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-89173 page for operator, model, and routing details .