sensors Mode-S transponder
151DF4
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73204 · AIRBUS A-319
- Hex
- 151DF4
- Octal
- 05216764
- Decimal
- 1,383,924
- Country
- RU
- Tail
- RA-73204
- Type
- A319
- Flights observed
- 53
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 151DF4 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 |
|---|---|---|---|
| SDM6924 | Rossiya - Russian Airlines | 6 | 2026-05-22 |
| SDM6442 | Rossiya - Russian Airlines | 3 | 2026-05-27 |
| SDM6326 | Rossiya - Russian Airlines | 3 | 2026-05-08 |
| SDM6325 | Rossiya - Russian Airlines | 3 | 2026-05-08 |
| SDM6926 | Rossiya - Russian Airlines | 2 | 2026-05-24 |
| SDM6560 | Rossiya - Russian Airlines | 2 | 2026-05-25 |
| SDM6542 | Rossiya - Russian Airlines | 2 | 2026-05-17 |
| SDM6472 | Rossiya - Russian Airlines | 2 | 2026-04-30 |
| SDM6444 | Rossiya - Russian Airlines | 2 | 2026-05-01 |
| SDM6332 | Rossiya - Russian Airlines | 2 | 2026-05-27 |
| SDM6315 | Rossiya - Russian Airlines | 2 | 2026-05-21 |
| SDM6974 | Rossiya - Russian Airlines | 1 | 2026-04-21 |
| SDM6946 | Rossiya - Russian Airlines | 1 | 2026-05-24 |
| SDM6923 | Rossiya - Russian Airlines | 1 | 2026-04-26 |
| SDM6857 | Rossiya - Russian Airlines | 1 | 2026-04-28 |
| SDM6582 | Rossiya - Russian Airlines | 1 | 2026-04-16 |
| SDM6572 | Rossiya - Russian Airlines | 1 | 2026-05-18 |
| SDM6569 | Rossiya - Russian Airlines | 1 | 2026-05-26 |
| SDM6561 | Rossiya - Russian Airlines | 1 | 2026-05-10 |
| SDM6559 | Rossiya - Russian Airlines | 1 | 2026-05-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | SDM6417 | LED → SVX | Jun 2, 11:30 UTC | Jun 2, 12:05 UTC | 35m |
| 2026-05-30 | SDM6532 | ALA → LED | May 30, 06:10 UTC | May 30, 07:55 UTC | 1h 45m |
| 2026-05-28 | SDM6134 | GRV → LED | May 28, 12:45 UTC | May 29, 06:10 UTC | 17h 25m |
| 2026-05-27 | SDM6332 | KGD → LED | May 27, 20:10 UTC | May 27, 21:20 UTC | 1h 10m |
| 2026-05-27 | SDM6442 | SGC → LED | May 27, 00:59 UTC | May 27, 18:40 UTC | 17h 40m |
| 2026-05-26 | SDM6442 | SGC → LED | May 26, 21:14 UTC | May 27, 18:40 UTC | 21h 25m |
| 2026-05-26 | SDM6569 | LED → AER | May 26, 07:40 UTC | May 26, 08:50 UTC | 1h 10m |
| 2026-05-25 | SDM6560 | AER → LED | May 25, 14:45 UTC | May 25, 15:15 UTC | 30m |
| 2026-05-25 | SDM6559 | LED → AER | May 25, 10:10 UTC | May 25, 10:35 UTC | 25m |
| 2026-05-25 | SDM6342 | MMK → LED | May 25, 06:50 UTC | May 25, 07:50 UTC | 1h 0m |
| 2026-05-25 | SDM6341 | LED → MMK | May 25, 04:15 UTC | May 25, 05:00 UTC | 45m |
| 2026-05-24 | SDM6926 | EVN → LED | May 24, 18:10 UTC | May 24, 18:40 UTC | 30m |
| 2026-05-24 | SDM6946 | EVN → VOG | May 24, 04:20 UTC | May 24, 04:45 UTC | 25m |
| 2026-05-22 | SDM6442 | SGC → LED | May 22, 21:10 UTC | May 23, 02:35 UTC | 5h 24m |
| 2026-05-22 | SDM6924 | EVN → EVN | May 22, 15:50 UTC | May 22, 16:00 UTC | 10m |
| 2026-05-22 | SDM6924 | EVN → EVN | May 22, 12:20 UTC | May 22, 12:45 UTC | 25m |
| 2026-05-21 | SDM6315 | LED → KRR | May 21, 08:55 UTC | May 21, 09:35 UTC | 40m |
| 2026-05-18 | SDM6572 | KJA → LED | May 18, 04:45 UTC | May 18, 17:45 UTC | 13h 0m |
| 2026-05-17 | SDM6404 | SVX → LED | May 17, 18:50 UTC | May 17, 19:01 UTC | 10m |
| 2026-05-17 | SDM6542 | OVB → LED | May 17, 00:25 UTC | May 17, 17:05 UTC | 16h 40m |
| 2026-05-16 | SDM6541 | LED → OVB | May 16, 20:00 UTC | May 16, 22:30 UTC | 2h 30m |
| 2026-05-10 | SDM6561 | LED → AER | May 10, 10:35 UTC | May 10, 11:45 UTC | 1h 10m |
| 2026-05-09 | SDM6560 | AER → LED | May 9, 17:10 UTC | May 9, 17:49 UTC | 40m |
| 2026-05-08 | SDM6326 | KGD → LED | May 8, 18:25 UTC | May 8, 19:35 UTC | 1h 10m |
| 2026-05-08 | SDM6325 | LED → KGD | May 8, 16:05 UTC | May 8, 17:00 UTC | 55m |
| 2026-05-06 | SDM6926 | EVN → LED | May 6, 18:10 UTC | May 6, 18:40 UTC | 30m |
| 2026-05-06 | SDM6450 | TJM → LED | May 6, 09:20 UTC | May 6, 16:45 UTC | 7h 25m |
| 2026-05-05 | SDM6453 | LED → REN | May 5, 16:00 UTC | May 5, 16:20 UTC | 20m |
| 2026-05-04 | SDM6326 | KGD → LED | May 4, 18:30 UTC | May 4, 19:45 UTC | 1h 16m |
| 2026-05-04 | SDM6325 | LED → KGD | May 4, 08:10 UTC | May 4, 17:00 UTC | 8h 50m |
| 2026-05-03 | SDM6542 | OVB → LED | May 3, 07:25 UTC | May 3, 10:30 UTC | 3h 5m |
| 2026-05-01 | SDM6444 | SGC → LED | May 1, 05:25 UTC | May 1, 23:20 UTC | 17h 55m |
| 2026-05-01 | SDM6444 | SGC → LED | May 1, 01:25 UTC | May 1, 23:20 UTC | 21h 55m |
| 2026-04-30 | SDM6403 | LED → SVX | Apr 30, 15:20 UTC | Apr 30, 15:40 UTC | 20m |
| 2026-04-30 | SDM6472 | OMS → LED | Apr 30, 02:35 UTC | Apr 30, 03:20 UTC | 45m |
| 2026-04-29 | SDM6924 | EVN → EVN | Apr 29, 11:55 UTC | Apr 29, 15:20 UTC | 3h 25m |
| 2026-04-28 | SDM6857 | LED → MRV | Apr 28, 12:05 UTC | Apr 28, 23:45 UTC | 11h 40m |
| 2026-04-27 | SDM6326 | KGD → LED | Apr 27, 18:20 UTC | Apr 27, 19:45 UTC | 1h 25m |
| 2026-04-27 | SDM6325 | LED → KGD | Apr 27, 15:50 UTC | Apr 27, 16:45 UTC | 55m |
| 2026-04-26 | SDM6332 | KGD → LED | Apr 26, 20:35 UTC | Apr 26, 21:50 UTC | 1h 15m |
| 2026-04-26 | SDM6924 | EVN → EVN | Apr 26, 12:00 UTC | Apr 26, 18:55 UTC | 6h 55m |
| 2026-04-26 | SDM6923 | LED → EVN | Apr 26, 06:55 UTC | Apr 26, 08:05 UTC | 1h 10m |
| 2026-04-25 | SDM6472 | OMS → LED | Apr 25, 11:00 UTC | Apr 26, 02:50 UTC | 15h 50m |
| 2026-04-23 | SDM6315 | LED → KRR | Apr 23, 09:10 UTC | Apr 23, 10:20 UTC | 1h 10m |
| 2026-04-22 | SDM6180 | VKO → LED | Apr 22, 18:05 UTC | Apr 22, 19:10 UTC | 1h 5m |
| 2026-04-22 | SDM6179 | LED → VKO | Apr 22, 16:00 UTC | Apr 22, 16:30 UTC | 30m |
| 2026-04-21 | SDM6974 | GYD → LED | Apr 21, 15:05 UTC | Apr 21, 18:15 UTC | 3h 10m |
| 2026-04-21 | SDM6324 | KGD → LED | Apr 21, 08:35 UTC | Apr 21, 10:05 UTC | 1h 30m |
| 2026-04-20 | SDM6323 | LED → KGD | Apr 20, 21:45 UTC | Apr 21, 07:05 UTC | 9h 20m |
| 2026-04-19 | SDM6924 | EVN → EVN | Apr 19, 12:10 UTC | Apr 19, 12:40 UTC | 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-73204 page for operator, model, and routing details .