sensors Mode-S transponder
155C03
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-89091 · SUKHOI Superjet 100-95
- Hex
- 155C03
- Octal
- 05256003
- Decimal
- 1,399,811
- Country
- RU
- Tail
- RA-89091
- Type
- SU95
- Flights observed
- 24
- Distinct callsigns
- 12
- Country
- RU
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 155C03 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| LLM850 | Yamal Airlines | 7 | 2026-05-24 |
| LLM855 | Yamal Airlines | 4 | 2026-05-08 |
| LLM222 | Yamal Airlines | 2 | 2026-05-13 |
| LLM174 | Yamal Airlines | 2 | 2026-04-23 |
| LLM173 | Yamal Airlines | 2 | 2026-04-27 |
| LLM945 | Yamal Airlines | 1 | 2026-05-08 |
| LLM877 | Yamal Airlines | 1 | 2026-05-26 |
| LLM845 | Yamal Airlines | 1 | 2026-05-25 |
| LLM420 | Yamal Airlines | 1 | 2026-04-24 |
| LLM419 | Yamal Airlines | 1 | 2026-04-24 |
| LLM350 | Yamal Airlines | 1 | 2026-05-23 |
| LLM249 | Yamal Airlines | 1 | 2026-04-17 |
Recent flights last 24
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-26 | LLM877 | NYM → LED | May 26, 12:30 UTC | May 26, 13:00 UTC | 30m |
| 2026-05-25 | LLM845 | NUX → LED | May 25, 04:55 UTC | May 25, 10:50 UTC | 5h 55m |
| 2026-05-24 | LLM850 | NOJ → LED | May 24, 14:50 UTC | May 25, 10:50 UTC | 20h 0m |
| 2026-05-24 | LLM850 | NOJ → LED | May 24, 13:55 UTC | May 25, 10:50 UTC | 20h 55m |
| 2026-05-24 | LLM850 | NOJ → LED | May 24, 09:55 UTC | May 25, 05:25 UTC | 19h 30m |
| 2026-05-24 | LLM850 | NOJ → LED | May 24, 07:25 UTC | May 25, 05:25 UTC | 22h 0m |
| 2026-05-24 | LLM850 | NOJ → LED | May 24, 02:40 UTC | May 24, 15:20 UTC | 12h 40m |
| 2026-05-23 | LLM350 | NOJ → UFA | May 23, 09:50 UTC | May 24, 07:30 UTC | 21h 41m |
| 2026-05-22 | LLM850 | NOJ → LED | May 22, 02:45 UTC | May 22, 15:25 UTC | 12h 40m |
| 2026-05-13 | LLM222 | NUX → SVX | May 13, 07:10 UTC | May 13, 07:20 UTC | 10m |
| 2026-05-12 | LLM850 | NOJ → LED | May 12, 09:25 UTC | May 12, 10:00 UTC | 35m |
| 2026-05-08 | LLM855 | SLY → LED | May 8, 14:15 UTC | May 9, 07:15 UTC | 17h 0m |
| 2026-05-08 | LLM855 | SLY → LED | May 8, 11:25 UTC | May 9, 07:15 UTC | 19h 50m |
| 2026-05-08 | LLM855 | SLY → LED | May 8, 10:04 UTC | May 9, 07:15 UTC | 21h 10m |
| 2026-05-08 | LLM945 | NUX → LED | May 8, 06:20 UTC | May 8, 07:59 UTC | 1h 40m |
| 2026-05-06 | LLM855 | SLY → LED | May 6, 06:20 UTC | May 6, 16:05 UTC | 9h 45m |
| 2026-04-27 | LLM173 | DME → NYM | Apr 27, 01:15 UTC | Apr 27, 01:35 UTC | 20m |
| 2026-04-24 | LLM420 | NOJ → DME | Apr 24, 14:05 UTC | Apr 24, 14:50 UTC | 45m |
| 2026-04-24 | LLM419 | DME → NOJ | Apr 24, 08:35 UTC | Apr 24, 08:55 UTC | 20m |
| 2026-04-23 | LLM174 | NYM → DME | Apr 23, 06:25 UTC | Apr 23, 07:40 UTC | 1h 15m |
| 2026-04-23 | LLM173 | DME → NYM | Apr 23, 00:55 UTC | Apr 23, 01:15 UTC | 20m |
| 2026-04-20 | LLM174 | NYM → DME | Apr 20, 06:20 UTC | Apr 20, 07:35 UTC | 1h 15m |
| 2026-04-17 | LLM249 | SVX → NOJ | Apr 17, 08:00 UTC | Apr 17, 08:10 UTC | 10m |
| 2026-04-13 | LLM222 | NUX → SVX | Apr 13, 07:00 UTC | Apr 13, 07:15 UTC | 15m |
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-89091 page for operator, model, and routing details .