sensors Mode-S transponder
151FB5
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73653 · BOEING 737-800
- Hex
- 151FB5
- Octal
- 05217665
- Decimal
- 1,384,373
- Country
- RU
- Tail
- RA-73653
- Type
- B738
- Flights observed
- 60
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 2d ago
Last known position
Country allocation
The ICAO 24-bit address 151FB5 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 |
|---|---|---|---|
| AUL505 | Aeroflot-Nord | 9 | 2026-05-14 |
| AUL506 | Aeroflot-Nord | 7 | 2026-05-18 |
| AUL581 | Aeroflot-Nord | 4 | 2026-05-12 |
| AUL508 | Aeroflot-Nord | 4 | 2026-05-21 |
| AUL504 | - | 4 | 2026-05-17 |
| AUL534 | Aeroflot-Nord | 3 | 2026-05-03 |
| AUL592 | Aeroflot-Nord | 2 | 2026-05-15 |
| AUL532 | Aeroflot-Nord | 2 | 2026-04-20 |
| AUL507 | Aeroflot-Nord | 2 | 2026-05-21 |
| AUL597 | Aeroflot-Nord | 1 | 2026-04-22 |
| AUL574 | - | 1 | 2026-04-30 |
| AUL572 | Aeroflot-Nord | 1 | 2026-04-27 |
| AUL547 | - | 1 | 2026-05-22 |
| AUL545 | Aeroflot-Nord | 1 | 2026-05-05 |
| AUL541 | - | 1 | 2026-04-28 |
| AUL533 | Aeroflot-Nord | 1 | 2026-05-02 |
| AUL531 | Aeroflot-Nord | 1 | 2026-04-15 |
| AUL528 | Aeroflot-Nord | 1 | 2026-04-17 |
| AUL521 | Aeroflot-Nord | 1 | 2026-05-26 |
| AUL513 | Aeroflot-Nord | 1 | 2026-05-03 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-27 | AUL163 | ARH → AER | May 27, 13:15 UTC | May 27, 13:40 UTC | 25m |
| 2026-05-26 | AUL521 | SVO → MMK | May 26, 09:40 UTC | May 26, 09:59 UTC | 20m |
| 2026-05-25 | AUL251 | SVO → SVO | May 25, 16:05 UTC | May 25, 16:45 UTC | 40m |
| 2026-05-25 | AUL217 | SVO → ARH | May 25, 09:25 UTC | May 25, 09:40 UTC | 15m |
| 2026-05-24 | AUL152 | LED → ARH | May 24, 12:10 UTC | May 24, 13:10 UTC | 1h 0m |
| 2026-05-22 | AUL547 | - | May 22, 12:55 UTC | May 22, 13:30 UTC | 35m |
| 2026-05-22 | AUL502 | SCW → SVO | May 22, 03:15 UTC | May 22, 10:10 UTC | 6h 55m |
| 2026-05-21 | AUL508 | MMK → LED | May 21, 10:10 UTC | May 21, 11:15 UTC | 1h 5m |
| 2026-05-21 | AUL507 | LED → MMK | May 21, 07:45 UTC | May 21, 08:25 UTC | 40m |
| 2026-05-19 | AUL218 | ARH → SVO | May 19, 12:55 UTC | May 19, 13:25 UTC | 30m |
| 2026-05-18 | AUL506 | KGD → LED | May 18, 08:45 UTC | May 18, 09:35 UTC | 50m |
| 2026-05-17 | AUL504 | - | May 17, 21:15 UTC | May 18, 07:10 UTC | 9h 55m |
| 2026-05-16 | AUL147 | ARH → LED | May 16, 18:05 UTC | May 16, 19:25 UTC | 1h 20m |
| 2026-05-16 | AUL176 | KGD → ARH | May 16, 15:05 UTC | May 16, 17:01 UTC | 1h 55m |
| 2026-05-16 | AUL175 | ARH → ARH | May 16, 09:10 UTC | May 16, 13:46 UTC | 4h 35m |
| 2026-05-15 | AUL592 | UFA → LED | May 15, 02:35 UTC | May 15, 03:15 UTC | 40m |
| 2026-05-14 | AUL506 | KGD → LED | May 14, 09:30 UTC | May 14, 10:31 UTC | 1h 0m |
| 2026-05-14 | AUL505 | SVO → SCW | May 14, 06:55 UTC | May 14, 07:40 UTC | 45m |
| 2026-05-12 | AUL581 | LED → KUF | May 12, 16:00 UTC | May 13, 03:15 UTC | 11h 15m |
| 2026-05-08 | AUL505 | SVO → SCW | May 8, 21:40 UTC | May 9, 08:20 UTC | 10h 40m |
| 2026-05-08 | AUL508 | MMK → LED | May 8, 10:25 UTC | May 9, 08:20 UTC | 21h 55m |
| 2026-05-08 | AUL508 | MMK → LED | May 8, 01:35 UTC | May 8, 21:40 UTC | 20h 5m |
| 2026-05-06 | AUL506 | KGD → LED | May 6, 09:35 UTC | May 6, 10:30 UTC | 55m |
| 2026-05-06 | AUL505 | SVO → SCW | May 6, 06:25 UTC | May 6, 07:55 UTC | 1h 30m |
| 2026-05-05 | AUL545 | LED → AER | May 5, 06:10 UTC | May 5, 06:35 UTC | 25m |
| 2026-05-03 | AUL513 | LED → KGD | May 3, 15:05 UTC | May 3, 16:25 UTC | 1h 20m |
| 2026-05-03 | AUL534 | KGD → LED | May 3, 13:15 UTC | May 3, 13:50 UTC | 35m |
| 2026-05-03 | AUL3104 | CEK → CEK | May 3, 10:00 UTC | May 3, 10:45 UTC | 45m |
| 2026-05-02 | AUL533 | LED → KGD | May 2, 16:25 UTC | May 2, 17:50 UTC | 1h 25m |
| 2026-05-02 | AUL506 | KGD → LED | May 2, 12:20 UTC | May 2, 13:25 UTC | 1h 5m |
| 2026-05-02 | AUL505 | SVO → SCW | May 2, 10:00 UTC | May 2, 10:30 UTC | 30m |
| 2026-05-01 | AUL534 | KGD → LED | May 1, 02:40 UTC | May 1, 21:10 UTC | 18h 30m |
| 2026-04-30 | AUL534 | KGD → LED | Apr 30, 21:25 UTC | May 1, 21:10 UTC | 23h 45m |
| 2026-04-30 | AUL574 | - | Apr 30, 11:05 UTC | May 1, 03:55 UTC | 16h 50m |
| 2026-04-28 | AUL541 | LED → LED | Apr 28, 12:55 UTC | Apr 28, 14:05 UTC | 1h 10m |
| 2026-04-28 | AUL506 | KGD → LED | Apr 28, 09:15 UTC | Apr 28, 10:40 UTC | 1h 25m |
| 2026-04-28 | AUL505 | SVO → SCW | Apr 28, 07:00 UTC | Apr 28, 07:45 UTC | 45m |
| 2026-04-27 | AUL505 | SVO → SCW | Apr 27, 08:30 UTC | Apr 28, 07:15 UTC | 22h 45m |
| 2026-04-27 | AUL572 | OVB → LED | Apr 27, 01:40 UTC | Apr 27, 08:35 UTC | 6h 55m |
| 2026-04-24 | AUL581 | LED → KUF | Apr 24, 13:15 UTC | Apr 25, 01:25 UTC | 12h 10m |
| 2026-04-24 | AUL592 | UFA → LED | Apr 24, 02:25 UTC | Apr 24, 03:05 UTC | 40m |
| 2026-04-23 | AUL506 | KGD → LED | Apr 23, 08:50 UTC | Apr 23, 10:20 UTC | 1h 30m |
| 2026-04-22 | AUL504 | - | Apr 22, 20:05 UTC | Apr 23, 07:30 UTC | 11h 25m |
| 2026-04-22 | AUL597 | LED → KZN | Apr 22, 06:20 UTC | Apr 22, 07:10 UTC | 50m |
| 2026-04-21 | AUL504 | - | Apr 21, 20:00 UTC | Apr 21, 20:40 UTC | 40m |
| 2026-04-21 | AUL503 | LED → LED | Apr 21, 17:01 UTC | Apr 21, 17:15 UTC | 15m |
| 2026-04-20 | AUL532 | KUF → LED | Apr 20, 15:35 UTC | Apr 21, 09:50 UTC | 18h 15m |
| 2026-04-20 | AUL532 | KUF → LED | Apr 20, 12:40 UTC | Apr 21, 09:50 UTC | 21h 10m |
| 2026-04-20 | AUL508 | MMK → LED | Apr 20, 04:35 UTC | Apr 20, 10:40 UTC | 6h 5m |
| 2026-04-18 | AUL252 | KGD → SVO | Apr 18, 09:40 UTC | Apr 18, 11:45 UTC | 2h 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-73653 page for operator, model, and routing details .