sensors Mode-S transponder
151DE7
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73191 · BOEING 737-800
- Hex
- 151DE7
- Octal
- 05216747
- Decimal
- 1,383,911
- Country
- RU
- Tail
- RA-73191
- Type
- B738
- Flights observed
- 31
- Distinct callsigns
- 17
- Country
- RU
- Last broadcast
- 23h ago
Last known position
Country allocation
The ICAO 24-bit address 151DE7 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SDM6642 | Rossiya - Russian Airlines | 5 | 2026-05-23 |
| SDM6602 | Rossiya - Russian Airlines | 3 | 2026-05-17 |
| SDM6311 | Rossiya - Russian Airlines | 3 | 2026-04-13 |
| SDM6204 | Rossiya - Russian Airlines | 3 | 2026-05-27 |
| SDM6641 | Rossiya - Russian Airlines | 2 | 2026-05-25 |
| SDM6499 | Rossiya - Russian Airlines | 2 | 2026-04-29 |
| SDM6312 | - | 2 | 2026-04-13 |
| SDM6202 | Rossiya - Russian Airlines | 2 | 2026-05-14 |
| SDM6662 | Rossiya - Russian Airlines | 1 | 2026-04-28 |
| SDM6661 | Rossiya - Russian Airlines | 1 | 2026-04-28 |
| SDM6601 | Rossiya - Russian Airlines | 1 | 2026-05-29 |
| SDM6365 | Rossiya - Russian Airlines | 1 | 2026-04-16 |
| SDM6313 | Rossiya - Russian Airlines | 1 | 2026-04-27 |
| SDM6201 | Rossiya - Russian Airlines | 1 | 2026-05-18 |
| SDM6197 | - | 1 | 2026-04-15 |
| SDM6152 | Rossiya - Russian Airlines | 1 | 2026-04-25 |
| SDM6151 | Rossiya - Russian Airlines | 1 | 2026-04-25 |
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | SDM6601 | AER → SVX | May 29, 06:15 UTC | May 29, 06:30 UTC | 15m |
| 2026-05-27 | SDM6204 | KUF → AER | May 27, 08:15 UTC | May 27, 14:40 UTC | 6h 25m |
| 2026-05-25 | SDM6641 | AER → OVB | May 25, 18:10 UTC | May 25, 18:35 UTC | 25m |
| 2026-05-23 | SDM6642 | OVB → AER | May 23, 10:20 UTC | May 23, 10:55 UTC | 35m |
| 2026-05-20 | SDM6641 | AER → OVB | May 20, 17:50 UTC | May 20, 18:20 UTC | 30m |
| 2026-05-20 | SDM6642 | OVB → AER | May 20, 03:05 UTC | May 20, 03:50 UTC | 45m |
| 2026-05-18 | SDM6201 | AER → KZN | May 18, 08:45 UTC | May 18, 08:55 UTC | 10m |
| 2026-05-17 | SDM6602 | SVX → AER | May 17, 12:10 UTC | May 18, 08:55 UTC | 20h 45m |
| 2026-05-17 | SDM6602 | SVX → AER | May 17, 06:35 UTC | May 17, 13:10 UTC | 6h 35m |
| 2026-05-16 | SDM6642 | OVB → AER | May 16, 03:10 UTC | May 16, 04:35 UTC | 1h 25m |
| 2026-05-14 | SDM6202 | KZN → AER | May 14, 12:25 UTC | May 14, 12:35 UTC | 10m |
| 2026-05-13 | SDM6202 | KZN → AER | May 13, 13:50 UTC | May 14, 12:35 UTC | 22h 45m |
| 2026-05-13 | SDM6204 | KUF → AER | May 13, 12:00 UTC | May 13, 13:55 UTC | 1h 55m |
| 2026-05-10 | SDM6642 | OVB → AER | May 10, 02:50 UTC | May 10, 08:35 UTC | 5h 45m |
| 2026-05-09 | SDM6642 | OVB → AER | May 9, 06:30 UTC | May 10, 03:55 UTC | 21h 25m |
| 2026-05-06 | SDM6602 | SVX → AER | May 6, 08:01 UTC | May 6, 15:25 UTC | 7h 24m |
| 2026-05-03 | SDM6204 | KUF → AER | May 3, 14:25 UTC | May 3, 14:40 UTC | 15m |
| 2026-04-29 | SDM6499 | SVO → AER | Apr 29, 15:10 UTC | Apr 29, 15:45 UTC | 35m |
| 2026-04-29 | SDM6499 | SVO → AER | Apr 29, 12:40 UTC | Apr 29, 13:05 UTC | 25m |
| 2026-04-28 | SDM6662 | KGD → SVO | Apr 28, 19:55 UTC | Apr 28, 22:10 UTC | 2h 15m |
| 2026-04-28 | SDM6661 | SVO → KGD | Apr 28, 15:55 UTC | Apr 28, 17:55 UTC | 2h 0m |
| 2026-04-27 | SDM6313 | SVO → KGD | Apr 27, 10:15 UTC | Apr 27, 11:05 UTC | 50m |
| 2026-04-25 | SDM6152 | KGD → SVO | Apr 25, 15:00 UTC | Apr 25, 17:05 UTC | 2h 5m |
| 2026-04-25 | SDM6151 | SVO → KGD | Apr 25, 11:05 UTC | Apr 25, 13:10 UTC | 2h 5m |
| 2026-04-16 | SDM6365 | SVO → TJM | Apr 16, 21:14 UTC | Apr 16, 21:45 UTC | 30m |
| 2026-04-15 | SDM6197 | - | Apr 15, 10:45 UTC | Apr 15, 10:55 UTC | 10m |
| 2026-04-13 | SDM6312 | - | Apr 13, 19:50 UTC | Apr 13, 21:20 UTC | 1h 30m |
| 2026-04-13 | SDM6312 | - | Apr 13, 19:10 UTC | Apr 13, 20:10 UTC | 1h 0m |
| 2026-04-13 | SDM6311 | SVO → KGD | Apr 13, 16:15 UTC | Apr 13, 17:30 UTC | 1h 15m |
| 2026-04-13 | SDM6311 | SVO → KGD | Apr 13, 15:50 UTC | Apr 13, 17:30 UTC | 1h 40m |
| 2026-04-13 | SDM6311 | SVO → KGD | Apr 13, 15:20 UTC | Apr 13, 16:15 UTC | 55m |
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-73191 page for operator, model, and routing details .