sensors Mode-S transponder
151D6D
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73069 · BOEING 737-400
- Hex
- 151D6D
- Octal
- 05216555
- Decimal
- 1,383,789
- Country
- RU
- Tail
- RA-73069
- Type
- B734
- Flights observed
- 103
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 54m ago
Last known position
Country allocation
The ICAO 24-bit address 151D6D 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 |
|---|---|---|---|
| UTA6109 | UTair Aviation | 8 | 2026-05-29 |
| UTA103 | UTair Aviation | 7 | 2026-05-18 |
| UTA574 | UTair Aviation | 6 | 2026-04-22 |
| UTA573 | UTair Aviation | 6 | 2026-04-21 |
| UTA375 | UTair Aviation | 6 | 2026-05-27 |
| UTA185 | UTair Aviation | 6 | 2026-05-03 |
| UTA398 | - | 5 | 2026-04-19 |
| UTA397 | UTair Aviation | 5 | 2026-04-22 |
| UTA576 | - | 4 | 2026-04-16 |
| UTA575 | UTair Aviation | 4 | 2026-04-16 |
| UTA376 | UTair Aviation | 4 | 2026-05-27 |
| UTA152 | UTair Aviation | 4 | 2026-05-13 |
| UTA104 | UTair Aviation | 4 | 2026-05-20 |
| UTA6110 | UTair Aviation | 3 | 2026-05-16 |
| UTA186 | UTair Aviation | 3 | 2026-05-03 |
| UTA1104 | UTair Aviation | 3 | 2026-05-17 |
| UTA744 | UTair Aviation | 2 | 2026-05-26 |
| UTA743 | UTair Aviation | 2 | 2026-05-26 |
| UTA6113 | UTair Aviation | 2 | 2026-05-08 |
| UTA456 | - | 2 | 2026-04-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | UTA6109 | UFA → IAA | May 29, 03:00 UTC | May 30, 00:45 UTC | 21h 45m |
| 2026-05-28 | UTA363 | VKO → UFA | May 28, 23:15 UTC | May 29, 15:10 UTC | 15h 55m |
| 2026-05-28 | UTA374 | MRV → VKO | May 28, 11:50 UTC | May 28, 14:25 UTC | 2h 35m |
| 2026-05-28 | UTA373 | VKO → MRV | May 28, 06:55 UTC | May 28, 09:45 UTC | 2h 50m |
| 2026-05-27 | UTA376 | SCW → VKO | May 27, 18:45 UTC | May 27, 20:20 UTC | 1h 35m |
| 2026-05-27 | UTA375 | VKO → SCW | May 27, 15:55 UTC | May 27, 17:20 UTC | 1h 25m |
| 2026-05-27 | UTA6316 | - | May 27, 02:09 UTC | May 27, 10:35 UTC | 8h 25m |
| 2026-05-26 | UTA376 | SCW → VKO | May 26, 18:55 UTC | May 26, 20:29 UTC | 1h 35m |
| 2026-05-26 | UTA375 | VKO → SCW | May 26, 16:05 UTC | May 26, 17:25 UTC | 1h 20m |
| 2026-05-26 | UTA744 | KVD → VKO | May 26, 08:39 UTC | May 26, 11:24 UTC | 2h 45m |
| 2026-05-26 | UTA743 | VKO → KVD | May 26, 03:15 UTC | May 26, 05:49 UTC | 2h 35m |
| 2026-05-25 | UTA376 | SCW → VKO | May 25, 18:55 UTC | May 25, 20:34 UTC | 1h 40m |
| 2026-05-25 | UTA375 | VKO → SCW | May 25, 16:05 UTC | May 25, 17:25 UTC | 1h 20m |
| 2026-05-25 | UTA744 | KVD → VKO | May 25, 08:45 UTC | May 25, 11:25 UTC | 2h 40m |
| 2026-05-25 | UTA743 | VKO → KVD | May 25, 03:45 UTC | May 25, 06:30 UTC | 2h 45m |
| 2026-05-24 | UTA376 | SCW → VKO | May 24, 18:55 UTC | May 24, 20:30 UTC | 1h 35m |
| 2026-05-24 | UTA375 | VKO → SCW | May 24, 16:00 UTC | May 24, 17:25 UTC | 1h 25m |
| 2026-05-23 | UTA364 | UFA → VKO | May 23, 16:40 UTC | May 24, 05:10 UTC | 12h 30m |
| 2026-05-20 | UTA104 | UFA → SGC | May 20, 14:05 UTC | May 20, 17:40 UTC | 3h 35m |
| 2026-05-18 | UTA103 | SGC → UFA | May 18, 06:35 UTC | May 19, 00:50 UTC | 18h 14m |
| 2026-05-17 | UTA1104 | UFA → SGC | May 17, 13:35 UTC | May 18, 06:40 UTC | 17h 5m |
| 2026-05-17 | UTA1104 | UFA → SGC | May 17, 08:45 UTC | May 18, 06:40 UTC | 21h 55m |
| 2026-05-17 | UTA1104 | UFA → SGC | May 17, 04:20 UTC | May 17, 20:30 UTC | 16h 10m |
| 2026-05-16 | UTA104 | UFA → SGC | May 16, 18:10 UTC | May 17, 13:40 UTC | 19h 30m |
| 2026-05-16 | UTA6110 | IAA → UFA | May 16, 13:21 UTC | May 17, 08:50 UTC | 19h 30m |
| 2026-05-14 | UTA6108 | IAA → UFA | May 14, 14:25 UTC | May 15, 00:40 UTC | 10h 15m |
| 2026-05-13 | UTA152 | NJC → UFA | May 13, 20:55 UTC | May 14, 14:30 UTC | 17h 35m |
| 2026-05-13 | UTA152 | NJC → UFA | May 13, 17:00 UTC | May 14, 14:30 UTC | 21h 30m |
| 2026-05-13 | UTA152 | NJC → UFA | May 13, 14:05 UTC | May 14, 00:50 UTC | 10h 45m |
| 2026-05-13 | UTA6109 | UFA → IAA | May 13, 00:35 UTC | May 13, 21:05 UTC | 20h 30m |
| 2026-05-12 | UTA6109 | UFA → IAA | May 12, 22:01 UTC | May 13, 21:05 UTC | 23h 5m |
| 2026-05-12 | UTA6109 | UFA → IAA | May 12, 18:20 UTC | May 13, 17:05 UTC | 22h 45m |
| 2026-05-12 | UTA6109 | UFA → IAA | May 12, 15:25 UTC | May 13, 14:15 UTC | 22h 50m |
| 2026-05-12 | UTA6109 | UFA → IAA | May 12, 05:20 UTC | May 13, 00:45 UTC | 19h 25m |
| 2026-05-12 | UTA6109 | UFA → IAA | May 12, 03:00 UTC | May 13, 00:45 UTC | 21h 45m |
| 2026-05-10 | UTA6126 | NNM → UFA | May 10, 15:55 UTC | May 10, 17:25 UTC | 1h 30m |
| 2026-05-09 | UTA6125 | UFA → NNM | May 9, 17:55 UTC | May 10, 05:55 UTC | 12h 0m |
| 2026-05-08 | UTA6113 | UFA → HMA | May 8, 21:25 UTC | May 9, 18:05 UTC | 20h 40m |
| 2026-05-08 | UTA6113 | UFA → HMA | May 8, 07:20 UTC | May 8, 21:35 UTC | 14h 15m |
| 2026-05-07 | UTA6183 | UFA → NOJ | May 7, 11:25 UTC | May 8, 07:24 UTC | 19h 59m |
| 2026-05-04 | UTA6109 | UFA → IAA | May 4, 03:54 UTC | May 4, 21:50 UTC | 17h 56m |
| 2026-05-03 | UTA186 | NUX → UFA | May 3, 13:00 UTC | May 4, 04:05 UTC | 15h 5m |
| 2026-05-03 | UTA185 | UFA → NUX | May 3, 08:30 UTC | May 4, 04:05 UTC | 19h 35m |
| 2026-05-02 | UTA185 | UFA → NUX | May 2, 18:15 UTC | May 3, 13:05 UTC | 18h 49m |
| 2026-05-02 | UTA186 | NUX → UFA | May 2, 15:45 UTC | May 3, 13:05 UTC | 21h 19m |
| 2026-05-02 | UTA185 | UFA → NUX | May 2, 08:25 UTC | May 3, 04:35 UTC | 20h 9m |
| 2026-05-01 | UTA185 | UFA → NUX | May 1, 16:50 UTC | May 2, 08:35 UTC | 15h 45m |
| 2026-04-30 | UTA103 | SGC → UFA | Apr 30, 12:25 UTC | Apr 30, 16:20 UTC | 3h 55m |
| 2026-04-29 | UTA104 | UFA → SGC | Apr 29, 17:55 UTC | Apr 30, 16:20 UTC | 22h 25m |
| 2026-04-29 | UTA6110 | IAA → UFA | Apr 29, 15:20 UTC | Apr 30, 12:30 UTC | 21h 10m |
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-73069 page for operator, model, and routing details .