sensors Mode-S transponder
151E4A
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73290 · BOEING 747-400
- Hex
- 151E4A
- Octal
- 05217112
- Decimal
- 1,384,010
- Country
- RU
- Tail
- RA-73290
- Type
- B744
- Flights observed
- 26
- Distinct callsigns
- 7
- Country
- RU
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 151E4A 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 7 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SDM6288 | Rossiya - Russian Airlines | 10 | 2026-05-29 |
| SDM6290 | Rossiya - Russian Airlines | 6 | 2026-04-30 |
| SDM6256 | Rossiya - Russian Airlines | 4 | 2026-05-28 |
| SDM6289 | Rossiya - Russian Airlines | 2 | 2026-04-18 |
| SDM6287 | Rossiya - Russian Airlines | 2 | 2026-05-29 |
| SDM6310 | Rossiya - Russian Airlines | 1 | 2026-05-06 |
| SDM6309 | Rossiya - Russian Airlines | 1 | 2026-05-06 |
Recent flights last 26
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | SDM6288 | KHV → SVO | May 29, 18:10 UTC | May 30, 06:30 UTC | 12h 20m |
| 2026-05-29 | SDM6287 | SVO → KHV | May 29, 14:55 UTC | May 29, 15:10 UTC | 15m |
| 2026-05-28 | SDM6256 | BQS → SVO | May 28, 11:20 UTC | May 28, 11:40 UTC | 20m |
| 2026-05-25 | SDM6288 | KHV → SVO | May 25, 05:50 UTC | May 25, 06:15 UTC | 25m |
| 2026-05-23 | SDM6288 | KHV → SVO | May 23, 05:50 UTC | May 23, 07:10 UTC | 1h 20m |
| 2026-05-21 | SDM6256 | BQS → SVO | May 21, 10:30 UTC | May 21, 10:55 UTC | 25m |
| 2026-05-16 | SDM6288 | KHV → SVO | May 16, 11:21 UTC | May 16, 11:51 UTC | 30m |
| 2026-05-15 | SDM6288 | KHV → SVO | May 15, 12:35 UTC | May 16, 11:51 UTC | 23h 15m |
| 2026-05-15 | SDM6288 | KHV → SVO | May 15, 11:35 UTC | May 15, 12:50 UTC | 1h 15m |
| 2026-05-06 | SDM6310 | KGD → SVO | May 6, 09:50 UTC | May 6, 11:45 UTC | 1h 55m |
| 2026-05-06 | SDM6309 | SVO → KGD | May 6, 07:05 UTC | May 6, 07:45 UTC | 40m |
| 2026-05-01 | SDM6288 | KHV → SVO | May 1, 11:30 UTC | May 1, 11:55 UTC | 25m |
| 2026-04-30 | SDM6290 | GDX → SVO | Apr 30, 09:25 UTC | Apr 30, 10:20 UTC | 55m |
| 2026-04-28 | SDM6288 | KHV → SVO | Apr 28, 13:20 UTC | Apr 28, 13:45 UTC | 25m |
| 2026-04-27 | SDM6290 | GDX → SVO | Apr 27, 09:05 UTC | Apr 27, 09:15 UTC | 10m |
| 2026-04-25 | SDM6290 | GDX → SVO | Apr 25, 19:05 UTC | Apr 26, 09:55 UTC | 14h 50m |
| 2026-04-24 | SDM6290 | GDX → SVO | Apr 24, 08:45 UTC | Apr 24, 09:20 UTC | 35m |
| 2026-04-22 | SDM6290 | GDX → SVO | Apr 22, 08:55 UTC | Apr 22, 09:30 UTC | 35m |
| 2026-04-18 | SDM6289 | SVO → GDX | Apr 18, 18:55 UTC | Apr 19, 09:40 UTC | 14h 45m |
| 2026-04-18 | SDM6289 | SVO → GDX | Apr 18, 18:05 UTC | Apr 18, 18:20 UTC | 15m |
| 2026-04-16 | SDM6256 | BQS → SVO | Apr 16, 11:15 UTC | Apr 16, 11:44 UTC | 30m |
| 2026-04-16 | SDM6256 | BQS → SVO | Apr 16, 10:34 UTC | Apr 16, 11:04 UTC | 30m |
| 2026-04-15 | SDM6290 | GDX → SVO | Apr 15, 09:00 UTC | Apr 15, 09:55 UTC | 55m |
| 2026-04-14 | SDM6288 | KHV → SVO | Apr 14, 12:50 UTC | Apr 14, 13:25 UTC | 35m |
| 2026-04-14 | SDM6288 | KHV → SVO | Apr 14, 12:15 UTC | Apr 14, 12:45 UTC | 30m |
| 2026-04-13 | SDM6287 | SVO → KHV | Apr 13, 21:30 UTC | Apr 13, 21:40 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-73290 page for operator, model, and routing details .