sensors Mode-S transponder
151F16
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73494 · BOEING 737-800
- Hex
- 151F16
- Octal
- 05217426
- Decimal
- 1,384,214
- Country
- RU
- Tail
- RA-73494
- Type
- B738
- Flights observed
- 25
- Distinct callsigns
- 8
- Country
- RU
- Last broadcast
- 3d ago
Last known position
Country allocation
The ICAO 24-bit address 151F16 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 8 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| UTA572 | UTair Aviation | 11 | 2026-05-27 |
| UTA571 | UTair Aviation | 5 | 2026-05-22 |
| UTA463 | UTair Aviation | 2 | 2026-05-20 |
| UTA296 | UTair Aviation | 2 | 2026-05-17 |
| UTA248 | UTair Aviation | 2 | 2026-05-01 |
| UTA591 | - | 1 | 2026-04-15 |
| UTA560 | UTair Aviation | 1 | 2026-05-17 |
| UTA559 | UTair Aviation | 1 | 2026-05-16 |
Recent flights last 25
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-27 | UTA572 | KJA → VKO | May 27, 00:39 UTC | May 27, 01:14 UTC | 35m |
| 2026-05-22 | UTA571 | VKO → KJA | May 22, 22:10 UTC | May 23, 04:00 UTC | 5h 49m |
| 2026-05-20 | UTA463 | VKO → TJM | May 20, 09:00 UTC | May 20, 09:45 UTC | 45m |
| 2026-05-19 | UTA463 | VKO → TJM | May 19, 12:35 UTC | May 20, 09:45 UTC | 21h 11m |
| 2026-05-18 | UTA572 | KJA → VKO | May 18, 22:25 UTC | May 19, 12:40 UTC | 14h 15m |
| 2026-05-18 | UTA572 | KJA → VKO | May 18, 14:45 UTC | May 19, 12:40 UTC | 21h 54m |
| 2026-05-17 | UTA296 | SGC → VKO | May 17, 20:20 UTC | May 18, 15:25 UTC | 19h 5m |
| 2026-05-17 | UTA560 | MCX → VKO | May 17, 09:10 UTC | May 17, 20:30 UTC | 11h 20m |
| 2026-05-16 | UTA559 | VKO → MCX | May 16, 23:25 UTC | May 16, 23:45 UTC | 20m |
| 2026-05-14 | UTA571 | VKO → KJA | May 14, 22:15 UTC | May 14, 22:50 UTC | 35m |
| 2026-05-14 | UTA572 | KJA → VKO | May 14, 00:55 UTC | May 14, 22:50 UTC | 21h 55m |
| 2026-05-13 | UTA571 | VKO → KJA | May 13, 20:15 UTC | May 14, 01:30 UTC | 5h 15m |
| 2026-05-11 | UTA572 | KJA → VKO | May 11, 00:45 UTC | May 11, 01:20 UTC | 35m |
| 2026-05-09 | UTA296 | SGC → VKO | May 9, 14:55 UTC | May 9, 15:15 UTC | 20m |
| 2026-05-04 | UTA572 | KJA → VKO | May 4, 22:05 UTC | May 5, 01:25 UTC | 3h 20m |
| 2026-05-01 | UTA248 | SGC → VKO | May 1, 04:00 UTC | May 1, 04:20 UTC | 20m |
| 2026-04-30 | UTA572 | KJA → VKO | Apr 30, 00:50 UTC | Apr 30, 01:30 UTC | 40m |
| 2026-04-26 | UTA248 | SGC → VKO | Apr 26, 14:45 UTC | Apr 27, 06:10 UTC | 15h 25m |
| 2026-04-22 | UTA572 | KJA → VKO | Apr 22, 01:10 UTC | Apr 22, 17:55 UTC | 16h 45m |
| 2026-04-21 | UTA572 | KJA → VKO | Apr 21, 22:25 UTC | Apr 22, 17:55 UTC | 19h 30m |
| 2026-04-15 | UTA591 | - | Apr 15, 17:05 UTC | Apr 15, 18:00 UTC | 55m |
| 2026-04-15 | UTA572 | KJA → VKO | Apr 15, 00:55 UTC | Apr 15, 01:40 UTC | 45m |
| 2026-04-14 | UTA571 | - | Apr 14, 22:10 UTC | Apr 14, 22:40 UTC | 30m |
| 2026-04-14 | UTA571 | - | Apr 14, 20:10 UTC | Apr 14, 20:20 UTC | 10m |
| 2026-04-13 | UTA572 | KJA → VKO | Apr 13, 01:05 UTC | Apr 13, 03:30 UTC | 2h 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-73494 page for operator, model, and routing details .