sensors Mode-S transponder
151E39
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73273 · AIRBUS A-321
- Hex
- 151E39
- Octal
- 05217071
- Decimal
- 1,383,993
- Country
- RU
- Tail
- RA-73273
- Type
- A321
- Flights observed
- 45
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 23h ago
Last known position
Country allocation
The ICAO 24-bit address 151E39 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 |
|---|---|---|---|
| NWS732 | NordWind Airlines | 5 | 2026-06-01 |
| NWS754 | - | 4 | 2026-05-24 |
| NWS731 | NordWind Airlines | 4 | 2026-06-01 |
| NWS753 | - | 3 | 2026-05-24 |
| NWS739 | - | 3 | 2026-05-17 |
| NWS310 | - | 3 | 2026-04-20 |
| NWS285 | - | 3 | 2026-04-19 |
| NWS740 | - | 2 | 2026-04-13 |
| NWS322 | - | 2 | 2026-05-26 |
| NWS321 | - | 2 | 2026-05-25 |
| NWS286 | - | 2 | 2026-04-19 |
| NWS710 | - | 1 | 2026-05-01 |
| NWS706 | - | 1 | 2026-05-11 |
| NWS314 | - | 1 | 2026-04-19 |
| NWS309 | - | 1 | 2026-04-19 |
| NWS284 | - | 1 | 2026-05-26 |
| NWS283 | - | 1 | 2026-05-26 |
| NWS253 | - | 1 | 2026-04-20 |
| NWS245 | - | 1 | 2026-04-17 |
| NWS243 | - | 1 | 2026-04-19 |
Recent flights last 45
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | NWS732 | KGD → KZN | Jun 1, 17:50 UTC | Jun 1, 19:15 UTC | 1h 25m |
| 2026-06-01 | NWS731 | KZN → KGD | Jun 1, 16:00 UTC | Jun 1, 16:25 UTC | 25m |
| 2026-05-31 | NWS731 | KZN → KGD | May 31, 22:10 UTC | Jun 1, 16:25 UTC | 18h 15m |
| 2026-05-27 | NWS1409 | - | May 27, 22:15 UTC | May 27, 22:25 UTC | 10m |
| 2026-05-26 | NWS284 | - | May 26, 10:44 UTC | May 26, 11:54 UTC | 1h 10m |
| 2026-05-26 | NWS283 | - | May 26, 07:55 UTC | May 26, 09:19 UTC | 1h 25m |
| 2026-05-26 | NWS322 | - | May 26, 00:14 UTC | May 26, 03:50 UTC | 3h 35m |
| 2026-05-25 | NWS321 | - | May 25, 13:55 UTC | May 25, 22:40 UTC | 8h 44m |
| 2026-05-25 | NWS321 | - | May 25, 03:10 UTC | May 25, 22:40 UTC | 19h 29m |
| 2026-05-24 | NWS059 | - | May 24, 16:20 UTC | May 24, 16:50 UTC | 30m |
| 2026-05-24 | NWS754 | - | May 24, 02:45 UTC | May 24, 05:45 UTC | 3h 0m |
| 2026-05-24 | NWS753 | - | May 24, 00:50 UTC | May 24, 01:15 UTC | 25m |
| 2026-05-21 | NWS754 | - | May 21, 02:35 UTC | May 21, 03:05 UTC | 30m |
| 2026-05-20 | NWS732 | KGD → KZN | May 20, 08:20 UTC | May 20, 10:00 UTC | 1h 40m |
| 2026-05-17 | NWS739 | - | May 17, 22:01 UTC | May 18, 01:20 UTC | 3h 20m |
| 2026-05-15 | NWS732 | KGD → KZN | May 15, 16:40 UTC | May 15, 18:20 UTC | 1h 40m |
| 2026-05-14 | NWS739 | - | May 14, 21:50 UTC | May 15, 01:10 UTC | 3h 20m |
| 2026-05-14 | NWS739 | - | May 14, 05:35 UTC | May 15, 01:10 UTC | 19h 35m |
| 2026-05-14 | NWS754 | - | May 14, 02:55 UTC | May 15, 01:10 UTC | 22h 15m |
| 2026-05-13 | NWS753 | - | May 13, 22:40 UTC | May 14, 01:10 UTC | 2h 30m |
| 2026-05-11 | NWS706 | - | May 11, 18:55 UTC | May 11, 19:05 UTC | 10m |
| 2026-05-08 | NWS732 | KGD → KZN | May 8, 17:35 UTC | May 9, 00:30 UTC | 6h 55m |
| 2026-05-08 | NWS731 | KZN → KGD | May 8, 15:10 UTC | May 8, 16:00 UTC | 50m |
| 2026-05-04 | NWS732 | KGD → KZN | May 4, 17:20 UTC | May 4, 18:35 UTC | 1h 16m |
| 2026-05-03 | NWS731 | KZN → KGD | May 3, 21:54 UTC | May 4, 15:40 UTC | 17h 45m |
| 2026-05-03 | NWS754 | - | May 3, 02:30 UTC | May 4, 01:05 UTC | 22h 34m |
| 2026-05-02 | NWS753 | - | May 2, 17:25 UTC | May 3, 00:55 UTC | 7h 30m |
| 2026-05-01 | NWS710 | - | May 1, 19:25 UTC | May 2, 17:40 UTC | 22h 16m |
| 2026-04-21 | NWS322 | - | Apr 21, 00:05 UTC | Apr 21, 10:30 UTC | 10h 25m |
| 2026-04-20 | NWS253 | LED → LED | Apr 20, 09:45 UTC | Apr 20, 10:00 UTC | 15m |
| 2026-04-20 | NWS310 | - | Apr 20, 02:05 UTC | Apr 20, 05:45 UTC | 3h 40m |
| 2026-04-19 | NWS309 | - | Apr 19, 21:50 UTC | Apr 20, 00:20 UTC | 2h 30m |
| 2026-04-19 | NWS286 | - | Apr 19, 17:00 UTC | Apr 19, 18:20 UTC | 1h 20m |
| 2026-04-19 | NWS285 | - | Apr 19, 14:10 UTC | Apr 19, 15:30 UTC | 1h 20m |
| 2026-04-19 | NWS243 | LED → LED | Apr 19, 06:05 UTC | Apr 19, 06:35 UTC | 30m |
| 2026-04-19 | NWS314 | - | Apr 19, 03:10 UTC | Apr 19, 03:40 UTC | 30m |
| 2026-04-18 | NWS310 | - | Apr 18, 07:25 UTC | Apr 18, 07:35 UTC | 10m |
| 2026-04-18 | NWS310 | - | Apr 18, 06:55 UTC | Apr 18, 22:20 UTC | 15h 25m |
| 2026-04-17 | NWS286 | - | Apr 17, 19:55 UTC | Apr 17, 20:50 UTC | 55m |
| 2026-04-17 | NWS285 | - | Apr 17, 17:25 UTC | Apr 17, 17:50 UTC | 25m |
| 2026-04-17 | NWS285 | - | Apr 17, 16:30 UTC | Apr 17, 17:15 UTC | 45m |
| 2026-04-17 | NWS245 | LED → LED | Apr 17, 09:20 UTC | Apr 17, 10:00 UTC | 40m |
| 2026-04-16 | NWS079 | - | Apr 16, 23:20 UTC | Apr 16, 23:30 UTC | 10m |
| 2026-04-13 | NWS740 | - | Apr 13, 03:55 UTC | Apr 13, 04:25 UTC | 30m |
| 2026-04-13 | NWS740 | - | Apr 13, 01:10 UTC | Apr 13, 04:15 UTC | 3h 5m |
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-73273 page for operator, model, and routing details .