sensors Mode-S transponder
155C51
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-89169 · SUKHOI Superjet 100-95
- Hex
- 155C51
- Octal
- 05256121
- Decimal
- 1,399,889
- Country
- RU
- Tail
- RA-89169
- Type
- SU95
- Flights observed
- 32
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 14h ago
Last known position
Country allocation
The ICAO 24-bit address 155C51 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 |
|---|---|---|---|
| SDM6648 | - | 8 | 2026-07-10 |
| SDM6647 | Rossiya - Russian Airlines | 3 | 2026-05-05 |
| SDM6346 | Rossiya - Russian Airlines | 2 | 2026-06-06 |
| SDM6334 | Rossiya - Russian Airlines | 2 | 2026-06-06 |
| SDM6333 | Rossiya - Russian Airlines | 2 | 2026-06-06 |
| SDM6950 | Rossiya - Russian Airlines | 1 | 2026-06-17 |
| SDM6800 | Rossiya - Russian Airlines | 1 | 2026-06-18 |
| SDM6588 | Rossiya - Russian Airlines | 1 | 2026-06-04 |
| SDM6446 | Rossiya - Russian Airlines | 1 | 2026-06-05 |
| SDM6413 | Rossiya - Russian Airlines | 1 | 2026-05-28 |
| SDM6403 | Rossiya - Russian Airlines | 1 | 2026-06-04 |
| SDM6396 | Rossiya - Russian Airlines | 1 | 2026-05-27 |
| SDM6342 | Rossiya - Russian Airlines | 1 | 2026-06-10 |
| SDM6330 | Rossiya - Russian Airlines | 1 | 2026-06-02 |
| SDM6329 | Rossiya - Russian Airlines | 1 | 2026-06-02 |
| SDM6322 | Rossiya - Russian Airlines | 1 | 2026-06-09 |
| SDM6321 | Rossiya - Russian Airlines | 1 | 2026-06-09 |
| SDM6301 | - | 1 | 2026-05-26 |
| SDM6005 | Rossiya - Russian Airlines | 1 | 2026-05-28 |
| SDM5716 | - | 1 | 2026-07-17 |
Recent flights last 32
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | SDM5716 | - | Jul 17, 08:20 UTC | Jul 18, 06:25 UTC | 22h 6m |
| 2026-07-10 | SDM6648 | - | Jul 10, 19:25 UTC | Jul 10, 20:15 UTC | 50m |
| 2026-06-30 | SDM6648 | - | Jun 30, 15:35 UTC | Jun 30, 19:45 UTC | 4h 10m |
| 2026-06-20 | SDM6648 | - | Jun 20, 15:14 UTC | Jun 20, 20:05 UTC | 4h 50m |
| 2026-06-18 | SDM6800 | SVX → KJA | Jun 18, 16:55 UTC | Jun 18, 17:35 UTC | 40m |
| 2026-06-17 | SDM6950 | EVN → KUF | Jun 17, 17:25 UTC | Jun 17, 17:50 UTC | 25m |
| 2026-06-10 | SDM6342 | MMK → LED | Jun 10, 06:25 UTC | Jun 10, 08:00 UTC | 1h 35m |
| 2026-06-09 | SDM6322 | KGD → LED | Jun 9, 11:00 UTC | Jun 9, 12:20 UTC | 1h 20m |
| 2026-06-09 | SDM6321 | LED → KGD | Jun 9, 08:55 UTC | Jun 9, 09:40 UTC | 45m |
| 2026-06-06 | SDM6346 | MMK → LED | Jun 6, 14:20 UTC | Jun 6, 18:35 UTC | 4h 15m |
| 2026-06-06 | SDM6334 | KGD → LED | Jun 6, 11:05 UTC | Jun 6, 12:14 UTC | 1h 10m |
| 2026-06-06 | SDM6333 | LED → KGD | Jun 6, 08:15 UTC | Jun 6, 09:39 UTC | 1h 25m |
| 2026-06-05 | SDM6446 | KVK → LED | Jun 5, 08:45 UTC | Jun 5, 12:55 UTC | 4h 10m |
| 2026-06-05 | SDM6334 | KGD → LED | Jun 5, 06:25 UTC | Jun 5, 07:20 UTC | 55m |
| 2026-06-05 | SDM6333 | LED → KGD | Jun 5, 04:10 UTC | Jun 5, 04:50 UTC | 40m |
| 2026-06-04 | SDM6403 | LED → SVX | Jun 4, 15:10 UTC | Jun 4, 15:30 UTC | 20m |
| 2026-06-04 | SDM6588 | SCW → LED | Jun 4, 02:35 UTC | Jun 4, 03:25 UTC | 50m |
| 2026-06-02 | SDM6330 | KGD → LED | Jun 2, 17:05 UTC | Jun 2, 18:15 UTC | 1h 10m |
| 2026-06-02 | SDM6329 | LED → KGD | Jun 2, 14:40 UTC | Jun 2, 15:20 UTC | 40m |
| 2026-05-29 | SDM6346 | MMK → LED | May 29, 02:30 UTC | May 29, 17:55 UTC | 15h 25m |
| 2026-05-28 | SDM6413 | LED → UFA | May 28, 13:50 UTC | May 28, 14:40 UTC | 50m |
| 2026-05-28 | SDM6005 | LED → VKO | May 28, 06:10 UTC | May 28, 07:20 UTC | 1h 10m |
| 2026-05-27 | SDM6396 | MMK → LED | May 27, 10:25 UTC | May 27, 14:30 UTC | 4h 5m |
| 2026-05-26 | SDM6301 | - | May 26, 12:40 UTC | May 27, 10:35 UTC | 21h 55m |
| 2026-05-12 | SDM6648 | PVG → VVO | May 12, 15:05 UTC | May 12, 20:10 UTC | 5h 5m |
| 2026-05-09 | SDM6648 | PVG → VVO | May 9, 19:45 UTC | May 9, 20:25 UTC | 40m |
| 2026-05-05 | SDM6647 | VVO → PVG | May 5, 23:30 UTC | May 6, 03:25 UTC | 3h 55m |
| 2026-05-01 | SDM6648 | PVG → VVO | May 1, 19:35 UTC | May 1, 20:25 UTC | 50m |
| 2026-04-25 | SDM6647 | VVO → PVG | Apr 25, 15:50 UTC | Apr 25, 19:40 UTC | 3h 50m |
| 2026-04-18 | SDM6647 | VVO → PVG | Apr 18, 15:15 UTC | Apr 18, 20:15 UTC | 5h 0m |
| 2026-04-17 | SDM6648 | PVG → VVO | Apr 17, 19:30 UTC | Apr 17, 20:05 UTC | 35m |
| 2026-04-17 | SDM6648 | PVG → VVO | Apr 17, 19:15 UTC | Apr 18, 15:15 UTC | 20h 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-89169 page for operator, model, and routing details .