sensors Mode-S transponder
151DF8
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73208 · BOEING 737-800
- Hex
- 151DF8
- Octal
- 05216770
- Decimal
- 1,383,928
- Country
- RU
- Tail
- RA-73208
- Type
- B738
- Flights observed
- 127
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- Jul 26, 12:30 UTC
Last known position
Country allocation
The ICAO 24-bit address 151DF8 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 |
|---|---|---|---|
| SDM6875 | - | 36 | 2026-07-16 |
| SDM6876 | Rossiya - Russian Airlines | 20 | 2026-07-25 |
| SDM6747 | - | 12 | 2026-07-17 |
| SDM6825 | Rossiya - Russian Airlines | 6 | 2026-07-22 |
| SDM6748 | Rossiya - Russian Airlines | 6 | 2026-07-24 |
| SDM6476 | - | 6 | 2026-07-09 |
| SDM6986 | - | 5 | 2026-06-28 |
| SDM6551 | - | 5 | 2026-07-13 |
| SDM6987 | Rossiya - Russian Airlines | 4 | 2026-05-12 |
| SDM6826 | - | 3 | 2026-06-20 |
| SDM6796 | Rossiya - Russian Airlines | 3 | 2026-07-21 |
| SDM6784 | Rossiya - Russian Airlines | 3 | 2026-05-10 |
| SDM6552 | - | 3 | 2026-07-24 |
| SDM6821 | Rossiya - Russian Airlines | 2 | 2026-06-03 |
| SDM6791 | - | 2 | 2026-07-13 |
| SDM6783 | Rossiya - Russian Airlines | 2 | 2026-06-07 |
| SDM7711 | - | 1 | 2026-04-21 |
| SDM6988 | - | 1 | 2026-04-15 |
| SDM6985 | Rossiya - Russian Airlines | 1 | 2026-06-14 |
| SDM6881 | Rossiya - Russian Airlines | 1 | 2026-04-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | SDM6876 | AER → KJA | Jul 25, 22:05 UTC | Jul 26, 12:30 UTC | 14h 26m |
| 2026-07-25 | SDM6876 | AER → KJA | Jul 25, 11:10 UTC | Jul 25, 22:45 UTC | 11h 35m |
| 2026-07-24 | SDM6748 | KZN → KJA | Jul 24, 19:45 UTC | Jul 25, 11:40 UTC | 15h 55m |
| 2026-07-24 | SDM6748 | KZN → KJA | Jul 24, 12:25 UTC | Jul 25, 11:40 UTC | 23h 15m |
| 2026-07-24 | SDM6552 | - | Jul 24, 09:00 UTC | Jul 24, 20:20 UTC | 11h 20m |
| 2026-07-24 | SDM6552 | - | Jul 24, 00:15 UTC | Jul 24, 20:20 UTC | 20h 5m |
| 2026-07-23 | SDM6876 | AER → KJA | Jul 23, 20:45 UTC | Jul 24, 20:00 UTC | 23h 15m |
| 2026-07-23 | SDM6876 | AER → KJA | Jul 23, 10:35 UTC | Jul 24, 10:00 UTC | 23h 25m |
| 2026-07-22 | SDM6876 | AER → KJA | Jul 22, 22:30 UTC | Jul 23, 21:50 UTC | 23h 20m |
| 2026-07-22 | SDM6825 | KJA → MCX | Jul 22, 13:15 UTC | Jul 23, 10:45 UTC | 21h 30m |
| 2026-07-21 | SDM6796 | FRU → KJA | Jul 21, 18:45 UTC | Jul 22, 14:00 UTC | 19h 15m |
| 2026-07-21 | SDM6796 | FRU → KJA | Jul 21, 14:05 UTC | Jul 22, 14:00 UTC | 23h 55m |
| 2026-07-20 | SDM6796 | FRU → KJA | Jul 20, 22:30 UTC | Jul 21, 19:50 UTC | 21h 19m |
| 2026-07-20 | SDM6552 | - | Jul 20, 13:40 UTC | Jul 20, 23:35 UTC | 9h 55m |
| 2026-07-19 | SDM6748 | KZN → KJA | Jul 19, 20:25 UTC | Jul 20, 14:20 UTC | 17h 55m |
| 2026-07-19 | SDM6748 | KZN → KJA | Jul 19, 16:05 UTC | Jul 20, 14:20 UTC | 22h 15m |
| 2026-07-19 | SDM6748 | KZN → KJA | Jul 19, 15:20 UTC | Jul 20, 14:00 UTC | 22h 40m |
| 2026-07-17 | SDM6747 | - | Jul 17, 09:10 UTC | Jul 17, 20:20 UTC | 11h 10m |
| 2026-07-17 | SDM6747 | - | Jul 17, 00:04 UTC | Jul 17, 20:20 UTC | 20h 15m |
| 2026-07-16 | SDM6747 | - | Jul 16, 23:49 UTC | Jul 17, 20:20 UTC | 20h 30m |
| 2026-07-16 | SDM6875 | - | Jul 16, 10:00 UTC | Jul 16, 21:35 UTC | 11h 35m |
| 2026-07-15 | SDM6875 | - | Jul 15, 14:05 UTC | Jul 16, 10:45 UTC | 20h 40m |
| 2026-07-15 | SDM6825 | KJA → MCX | Jul 15, 13:20 UTC | Jul 16, 10:45 UTC | 21h 25m |
| 2026-07-13 | SDM6551 | - | Jul 13, 17:40 UTC | Jul 14, 03:35 UTC | 9h 55m |
| 2026-07-13 | SDM6791 | - | Jul 13, 08:20 UTC | Jul 13, 14:35 UTC | 6h 15m |
| 2026-07-13 | SDM6876 | - | Jul 13, 05:31 UTC | Jul 13, 06:05 UTC | 35m |
| 2026-07-10 | SDM6875 | - | Jul 10, 20:15 UTC | Jul 11, 11:35 UTC | 15h 20m |
| 2026-07-10 | SDM6747 | - | Jul 10, 12:20 UTC | Jul 11, 11:35 UTC | 23h 15m |
| 2026-07-10 | SDM6747 | - | Jul 10, 09:40 UTC | Jul 10, 20:45 UTC | 11h 5m |
| 2026-07-10 | SDM6747 | - | Jul 10, 00:05 UTC | Jul 10, 20:45 UTC | 20h 40m |
| 2026-07-09 | SDM6747 | - | Jul 9, 23:50 UTC | Jul 10, 20:45 UTC | 20h 55m |
| 2026-07-09 | SDM6747 | - | Jul 9, 16:05 UTC | Jul 10, 13:05 UTC | 21h 0m |
| 2026-07-09 | SDM6551 | - | Jul 9, 13:55 UTC | Jul 10, 10:20 UTC | 20h 25m |
| 2026-07-09 | SDM6476 | - | Jul 9, 06:05 UTC | Jul 10, 00:30 UTC | 18h 25m |
| 2026-07-09 | SDM6476 | - | Jul 9, 03:20 UTC | Jul 10, 00:30 UTC | 21h 10m |
| 2026-07-08 | SDM6476 | - | Jul 8, 20:05 UTC | Jul 9, 16:25 UTC | 20h 20m |
| 2026-07-08 | SDM6476 | - | Jul 8, 18:05 UTC | Jul 9, 16:25 UTC | 22h 20m |
| 2026-07-08 | SDM6476 | - | Jul 8, 16:45 UTC | Jul 9, 16:00 UTC | 23h 15m |
| 2026-07-08 | SDM6476 | - | Jul 8, 12:15 UTC | Jul 9, 09:45 UTC | 21h 30m |
| 2026-07-04 | SDM6572 | - | Jul 4, 22:20 UTC | Jul 5, 17:45 UTC | 19h 25m |
| 2026-07-02 | SDM6875 | - | Jul 2, 10:05 UTC | Jul 2, 22:55 UTC | 12h 50m |
| 2026-07-01 | SDM6875 | - | Jul 1, 21:40 UTC | Jul 2, 10:50 UTC | 13h 10m |
| 2026-07-01 | SDM6875 | - | Jul 1, 10:40 UTC | Jul 1, 22:20 UTC | 11h 40m |
| 2026-06-29 | SDM6875 | - | Jun 29, 10:24 UTC | Jun 30, 01:09 UTC | 14h 45m |
| 2026-06-28 | SDM6875 | - | Jun 28, 16:05 UTC | Jun 29, 11:14 UTC | 19h 10m |
| 2026-06-28 | SDM6875 | - | Jun 28, 15:29 UTC | Jun 29, 11:14 UTC | 19h 45m |
| 2026-06-28 | SDM6986 | - | Jun 28, 12:05 UTC | Jun 29, 11:14 UTC | 23h 10m |
| 2026-06-28 | SDM6986 | - | Jun 28, 11:55 UTC | Jun 28, 23:29 UTC | 11h 35m |
| 2026-06-28 | SDM6986 | - | Jun 28, 02:05 UTC | Jun 28, 23:29 UTC | 21h 25m |
| 2026-06-28 | SDM6986 | - | Jun 28, 01:59 UTC | Jun 28, 23:29 UTC | 21h 30m |
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-73208 page for operator, model, and routing details .