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
- 83
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 1d 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 | 17 | 2026-07-16 |
| NWS731 | NordWind Airlines | 8 | 2026-07-13 |
| NWS754 | - | 5 | 2026-06-07 |
| NWS283 | - | 5 | 2026-06-28 |
| NWS753 | - | 4 | 2026-07-05 |
| NWS740 | - | 4 | 2026-07-17 |
| NWS310 | - | 4 | 2026-06-24 |
| NWS739 | - | 3 | 2026-05-17 |
| NWS286 | - | 3 | 2026-06-27 |
| NWS285 | - | 3 | 2026-04-19 |
| NWS284 | - | 3 | 2026-06-28 |
| NWS322 | - | 2 | 2026-05-26 |
| NWS321 | - | 2 | 2026-05-25 |
| NWS282 | - | 2 | 2026-06-27 |
| NWS928 | - | 1 | 2026-06-09 |
| NWS866 | - | 1 | 2026-07-11 |
| NWS865 | - | 1 | 2026-07-11 |
| NWS851 | - | 1 | 2026-07-08 |
| NWS748 | - | 1 | 2026-06-04 |
| NWS710 | - | 1 | 2026-05-01 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | NWS740 | - | Jul 17, 01:15 UTC | Jul 17, 01:49 UTC | 35m |
| 2026-07-16 | NWS732 | KGD → KZN | Jul 16, 14:15 UTC | Jul 16, 22:59 UTC | 8h 45m |
| 2026-07-13 | NWS732 | KGD → KZN | Jul 13, 18:10 UTC | Jul 13, 19:30 UTC | 1h 20m |
| 2026-07-13 | NWS731 | KZN → KGD | Jul 13, 16:10 UTC | Jul 13, 16:40 UTC | 30m |
| 2026-07-11 | NWS865 | - | Jul 11, 17:20 UTC | Jul 11, 18:40 UTC | 1h 20m |
| 2026-07-11 | NWS866 | - | Jul 11, 13:10 UTC | Jul 11, 15:25 UTC | 2h 15m |
| 2026-07-09 | NWS732 | KGD → KZN | Jul 9, 16:20 UTC | Jul 10, 02:25 UTC | 10h 5m |
| 2026-07-08 | NWS851 | - | Jul 8, 12:05 UTC | Jul 8, 20:00 UTC | 7h 55m |
| 2026-07-07 | NWS731 | KZN → KGD | Jul 7, 17:15 UTC | Jul 7, 17:35 UTC | 20m |
| 2026-07-05 | NWS732 | KGD → KZN | Jul 5, 03:05 UTC | Jul 5, 14:45 UTC | 11h 40m |
| 2026-07-05 | NWS753 | - | Jul 5, 01:25 UTC | Jul 5, 01:45 UTC | 20m |
| 2026-07-02 | NWS732 | KGD → KZN | Jul 2, 16:50 UTC | Jul 3, 01:50 UTC | 9h 0m |
| 2026-06-29 | NWS732 | KGD → KZN | Jun 29, 18:25 UTC | Jun 29, 19:15 UTC | 50m |
| 2026-06-28 | NWS284 | - | Jun 28, 11:09 UTC | Jun 28, 12:25 UTC | 1h 15m |
| 2026-06-28 | NWS283 | - | Jun 28, 08:39 UTC | Jun 28, 09:34 UTC | 55m |
| 2026-06-27 | NWS313 | - | Jun 27, 21:34 UTC | Jun 28, 00:20 UTC | 2h 45m |
| 2026-06-27 | NWS286 | - | Jun 27, 17:25 UTC | Jun 27, 18:24 UTC | 1h 0m |
| 2026-06-27 | NWS283 | - | Jun 27, 15:10 UTC | Jun 27, 15:55 UTC | 45m |
| 2026-06-27 | NWS282 | - | Jun 27, 12:09 UTC | Jun 27, 13:15 UTC | 1h 5m |
| 2026-06-27 | NWS281 | - | Jun 27, 09:40 UTC | Jun 27, 10:25 UTC | 45m |
| 2026-06-25 | NWS740 | - | Jun 25, 23:19 UTC | Jun 26, 01:54 UTC | 2h 35m |
| 2026-06-25 | NWS284 | - | Jun 25, 12:50 UTC | Jun 25, 14:04 UTC | 1h 15m |
| 2026-06-25 | NWS283 | - | Jun 25, 10:35 UTC | Jun 25, 11:25 UTC | 50m |
| 2026-06-24 | NWS282 | - | Jun 24, 19:00 UTC | Jun 24, 20:20 UTC | 1h 20m |
| 2026-06-24 | NWS283 | - | Jun 24, 16:34 UTC | Jun 24, 17:20 UTC | 45m |
| 2026-06-24 | NWS310 | - | Jun 24, 10:39 UTC | Jun 24, 10:49 UTC | 10m |
| 2026-06-17 | NWS732 | KGD → KZN | Jun 17, 18:20 UTC | Jun 18, 12:20 UTC | 18h 0m |
| 2026-06-14 | NWS732 | KGD → KZN | Jun 14, 12:25 UTC | Jun 15, 05:45 UTC | 17h 19m |
| 2026-06-13 | NWS732 | KGD → KZN | Jun 13, 16:00 UTC | Jun 14, 10:40 UTC | 18h 40m |
| 2026-06-13 | NWS731 | KZN → KGD | Jun 13, 14:00 UTC | Jun 13, 14:25 UTC | 25m |
| 2026-06-11 | NWS732 | KGD → KZN | Jun 11, 16:00 UTC | Jun 12, 09:40 UTC | 17h 41m |
| 2026-06-10 | NWS731 | KZN → KGD | Jun 10, 19:50 UTC | Jun 10, 20:30 UTC | 40m |
| 2026-06-09 | NWS928 | - | Jun 9, 06:45 UTC | Jun 9, 17:40 UTC | 10h 55m |
| 2026-06-07 | NWS732 | KGD → KZN | Jun 7, 21:05 UTC | Jun 8, 09:10 UTC | 12h 5m |
| 2026-06-07 | NWS754 | - | Jun 7, 02:35 UTC | Jun 7, 19:15 UTC | 16h 40m |
| 2026-06-06 | NWS409 | - | Jun 6, 09:04 UTC | Jun 7, 01:09 UTC | 16h 5m |
| 2026-06-04 | NWS732 | KGD → KZN | Jun 4, 14:05 UTC | Jun 4, 15:35 UTC | 1h 30m |
| 2026-06-04 | NWS748 | - | Jun 4, 05:15 UTC | Jun 4, 05:30 UTC | 15m |
| 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 |
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 .