sensors Mode-S transponder
155C00
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-89088 · SUKHOI Superjet 100-95
- Hex
- 155C00
- Octal
- 05256000
- Decimal
- 1,399,808
- Country
- RU
- Tail
- RA-89088
- Type
- SU95
- Flights observed
- 24
- Distinct callsigns
- 13
- Country
- RU
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 155C00 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 13 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| LLM174 | Yamal Airlines | 6 | 2026-06-01 |
| LLM850 | Yamal Airlines | 3 | 2026-05-08 |
| LLM855 | Yamal Airlines | 2 | 2026-05-15 |
| LLM843 | Yamal Airlines | 2 | 2026-05-02 |
| LLM577 | Yamal Airlines | 2 | 2026-05-12 |
| LLM420 | Yamal Airlines | 2 | 2026-05-24 |
| LLM877 | Yamal Airlines | 1 | 2026-05-12 |
| LLM856 | Yamal Airlines | 1 | 2026-04-22 |
| LLM845 | Yamal Airlines | 1 | 2026-04-22 |
| LLM488 | Yamal Airlines | 1 | 2026-05-03 |
| LLM487 | Yamal Airlines | 1 | 2026-05-03 |
| LLM438 | Yamal Airlines | 1 | 2026-04-16 |
| LLM131 | Yamal Airlines | 1 | 2026-05-23 |
Recent flights last 24
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | LLM174 | NYM → DME | Jun 1, 05:35 UTC | Jun 1, 06:50 UTC | 1h 15m |
| 2026-05-29 | LLM174 | NYM → DME | May 29, 01:35 UTC | May 29, 06:20 UTC | 4h 45m |
| 2026-05-28 | LLM174 | NYM → DME | May 28, 06:20 UTC | May 29, 06:00 UTC | 23h 40m |
| 2026-05-24 | LLM420 | NOJ → DME | May 24, 05:55 UTC | May 24, 06:40 UTC | 45m |
| 2026-05-23 | LLM131 | SLY → SVO | May 23, 04:35 UTC | May 23, 05:10 UTC | 35m |
| 2026-05-22 | LLM174 | NYM → DME | May 22, 05:20 UTC | May 22, 05:45 UTC | 25m |
| 2026-05-21 | LLM174 | NYM → DME | May 21, 06:35 UTC | May 22, 05:45 UTC | 23h 10m |
| 2026-05-19 | LLM174 | NYM → DME | May 19, 06:25 UTC | May 19, 06:55 UTC | 30m |
| 2026-05-17 | LLM420 | NOJ → DME | May 17, 11:50 UTC | May 17, 12:25 UTC | 35m |
| 2026-05-15 | LLM855 | SLY → LED | May 15, 14:10 UTC | May 16, 06:10 UTC | 16h 0m |
| 2026-05-13 | LLM855 | SLY → LED | May 13, 06:10 UTC | May 13, 15:20 UTC | 9h 10m |
| 2026-05-12 | LLM877 | NYM → LED | May 12, 16:30 UTC | May 13, 15:20 UTC | 22h 50m |
| 2026-05-12 | LLM577 | NOJ → MRV | May 12, 08:05 UTC | May 13, 06:35 UTC | 22h 30m |
| 2026-05-12 | LLM577 | NOJ → MRV | May 12, 07:45 UTC | May 12, 17:10 UTC | 9h 25m |
| 2026-05-08 | LLM850 | NOJ → LED | May 8, 14:10 UTC | May 8, 15:30 UTC | 1h 20m |
| 2026-05-03 | LLM488 | OVB → SLY | May 3, 08:25 UTC | May 3, 08:45 UTC | 20m |
| 2026-05-03 | LLM487 | SLY → OVB | May 3, 06:35 UTC | May 3, 06:50 UTC | 15m |
| 2026-05-02 | LLM843 | SLY → KZN | May 2, 06:20 UTC | May 2, 07:50 UTC | 1h 30m |
| 2026-04-26 | LLM850 | NOJ → LED | Apr 26, 10:00 UTC | Apr 26, 15:35 UTC | 5h 35m |
| 2026-04-24 | LLM850 | NOJ → LED | Apr 24, 02:35 UTC | Apr 24, 15:10 UTC | 12h 35m |
| 2026-04-22 | LLM856 | LED → SLY | Apr 22, 12:20 UTC | Apr 22, 14:30 UTC | 2h 10m |
| 2026-04-22 | LLM845 | NUX → LED | Apr 22, 09:00 UTC | Apr 22, 10:30 UTC | 1h 30m |
| 2026-04-18 | LLM843 | - | Apr 18, 13:20 UTC | Apr 18, 13:45 UTC | 25m |
| 2026-04-16 | LLM438 | UFA → SLY | Apr 16, 04:34 UTC | Apr 16, 04:44 UTC | 10m |
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-89088 page for operator, model, and routing details .