sensors Mode-S transponder
151FE8
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73704 · AIRBUS A-321
- Hex
- 151FE8
- Octal
- 05217750
- Decimal
- 1,384,424
- Country
- RU
- Tail
- RA-73704
- Type
- A321
- Flights observed
- 242
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- Jul 26, 20:15 UTC
Last known position
Country allocation
The ICAO 24-bit address 151FE8 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 |
|---|---|---|---|
| AFL431 | - | 40 | 2026-06-30 |
| AFL430 | - | 25 | 2026-06-28 |
| AFL421 | Aeroflot Russian Airlines | 18 | 2026-07-24 |
| AFL420 | - | 15 | 2026-06-24 |
| AFL1751 | Aeroflot Russian Airlines | 11 | 2026-07-22 |
| AFL433 | Aeroflot Russian Airlines | 9 | 2026-06-27 |
| AFL423 | - | 9 | 2026-07-13 |
| AFL427 | - | 8 | 2026-07-17 |
| AFL432 | Aeroflot Russian Airlines | 5 | 2026-06-27 |
| AFL1300 | Aeroflot Russian Airlines | 4 | 2026-06-17 |
| AFL660 | - | 3 | 2026-04-15 |
| AFL480 | - | 3 | 2026-07-16 |
| AFL461 | - | 3 | 2026-07-19 |
| AFL422 | - | 3 | 2026-07-12 |
| AFL2148 | Aeroflot Russian Airlines | 3 | 2026-04-26 |
| AFL1882 | Aeroflot Russian Airlines | 3 | 2026-04-23 |
| AFL1750 | Aeroflot Russian Airlines | 3 | 2026-07-22 |
| AFL1645 | - | 3 | 2026-04-15 |
| AFL1018 | Aeroflot Russian Airlines | 3 | 2026-05-07 |
| AFL1017 | Aeroflot Russian Airlines | 3 | 2026-05-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | AFL460 | SVO → HRG | Jul 26, 18:10 UTC | Jul 26, 20:15 UTC | 2h 5m |
| 2026-07-26 | AFL460 | SVO → HRG | Jul 26, 14:25 UTC | Jul 26, 14:45 UTC | 20m |
| 2026-07-26 | AFL463 | HRG → SVO | Jul 26, 03:05 UTC | Jul 26, 10:00 UTC | 6h 56m |
| 2026-07-25 | AFL462 | SVO → HRG | Jul 25, 22:55 UTC | Jul 25, 23:25 UTC | 30m |
| 2026-07-24 | AFL421 | HRG → SVO | Jul 24, 21:30 UTC | Jul 25, 15:25 UTC | 17h 55m |
| 2026-07-24 | AFL463 | HRG → SVO | Jul 24, 06:20 UTC | Jul 25, 00:05 UTC | 17h 45m |
| 2026-07-23 | AFL462 | SVO → HRG | Jul 23, 08:50 UTC | Jul 24, 04:00 UTC | 19h 10m |
| 2026-07-22 | AFL1750 | SVO → YKS | Jul 22, 21:20 UTC | Jul 22, 21:45 UTC | 25m |
| 2026-07-22 | AFL1751 | YKS → SVO | Jul 22, 11:20 UTC | Jul 22, 11:35 UTC | 15m |
| 2026-07-21 | AFL1750 | SVO → YKS | Jul 21, 21:30 UTC | Jul 21, 21:55 UTC | 25m |
| 2026-07-21 | AFL1768 | - | Jul 21, 13:00 UTC | Jul 21, 13:10 UTC | 10m |
| 2026-07-21 | AFL1768 | SVO → SVO | Jul 21, 12:45 UTC | Jul 21, 12:55 UTC | 10m |
| 2026-07-20 | AFL425 | - | Jul 20, 14:20 UTC | Jul 21, 08:45 UTC | 18h 24m |
| 2026-07-20 | AFL425 | - | Jul 20, 12:30 UTC | Jul 21, 08:45 UTC | 20h 14m |
| 2026-07-19 | AFL461 | - | Jul 19, 16:35 UTC | Jul 20, 10:05 UTC | 17h 30m |
| 2026-07-19 | AFL461 | - | Jul 19, 15:20 UTC | Jul 20, 10:05 UTC | 18h 45m |
| 2026-07-19 | AFL461 | - | Jul 19, 00:05 UTC | Jul 20, 00:00 UTC | 23h 55m |
| 2026-07-18 | AFL439 | SSH → SVO | Jul 18, 22:05 UTC | Jul 19, 22:00 UTC | 23h 55m |
| 2026-07-18 | AFL439 | SSH → SVO | Jul 18, 21:55 UTC | Jul 19, 18:05 UTC | 20h 10m |
| 2026-07-18 | AFL438 | - | Jul 18, 17:30 UTC | Jul 18, 19:50 UTC | 2h 20m |
| 2026-07-18 | AFL1751 | - | Jul 18, 10:35 UTC | Jul 18, 11:00 UTC | 25m |
| 2026-07-17 | AFL1750 | - | Jul 17, 14:04 UTC | Jul 18, 10:00 UTC | 19h 56m |
| 2026-07-17 | AFL427 | - | Jul 17, 12:45 UTC | Jul 18, 10:00 UTC | 21h 16m |
| 2026-07-17 | AFL427 | - | Jul 17, 10:05 UTC | Jul 18, 10:00 UTC | 23h 56m |
| 2026-07-17 | AFL427 | - | Jul 17, 09:25 UTC | Jul 17, 23:00 UTC | 13h 35m |
| 2026-07-16 | AFL427 | - | Jul 16, 22:05 UTC | Jul 17, 22:00 UTC | 23h 55m |
| 2026-07-16 | AFL427 | - | Jul 16, 21:10 UTC | Jul 17, 15:35 UTC | 18h 25m |
| 2026-07-16 | AFL480 | - | Jul 16, 16:40 UTC | Jul 16, 18:44 UTC | 2h 5m |
| 2026-07-16 | AFL480 | SVO → SVO | Jul 16, 13:15 UTC | Jul 16, 13:34 UTC | 20m |
| 2026-07-16 | AFL429 | - | Jul 16, 05:25 UTC | Jul 16, 08:15 UTC | 2h 50m |
| 2026-07-16 | AFL428 | - | Jul 16, 01:55 UTC | Jul 16, 03:25 UTC | 1h 30m |
| 2026-07-15 | AFL428 | SVO → SVO | Jul 15, 21:55 UTC | Jul 15, 22:25 UTC | 30m |
| 2026-07-15 | AFL427 | - | Jul 15, 12:40 UTC | Jul 15, 14:00 UTC | 1h 20m |
| 2026-07-15 | AFL426 | - | Jul 15, 08:55 UTC | Jul 15, 10:25 UTC | 1h 30m |
| 2026-07-13 | AFL423 | - | Jul 13, 14:05 UTC | Jul 14, 08:20 UTC | 18h 15m |
| 2026-07-13 | AFL423 | - | Jul 13, 13:35 UTC | Jul 14, 08:20 UTC | 18h 45m |
| 2026-07-12 | AFL422 | - | Jul 12, 18:30 UTC | Jul 13, 11:00 UTC | 16h 30m |
| 2026-07-11 | AFL1751 | - | Jul 11, 08:40 UTC | Jul 11, 18:40 UTC | 10h 0m |
| 2026-07-10 | AFL1751 | - | Jul 10, 10:05 UTC | Jul 11, 10:00 UTC | 23h 56m |
| 2026-07-09 | AFL1751 | - | Jul 9, 16:05 UTC | Jul 10, 10:30 UTC | 18h 25m |
| 2026-07-09 | AFL423 | - | Jul 9, 14:05 UTC | Jul 10, 10:30 UTC | 20h 25m |
| 2026-07-09 | AFL423 | - | Jul 9, 13:45 UTC | Jul 10, 10:30 UTC | 20h 45m |
| 2026-07-09 | AFL423 | - | Jul 9, 10:05 UTC | Jul 10, 10:00 UTC | 23h 55m |
| 2026-07-09 | AFL423 | - | Jul 9, 08:45 UTC | Jul 9, 23:10 UTC | 14h 25m |
| 2026-07-09 | AFL422 | SVO → SVO | Jul 9, 05:40 UTC | Jul 9, 06:35 UTC | 55m |
| 2026-07-07 | AFL423 | - | Jul 7, 22:05 UTC | Jul 8, 16:50 UTC | 18h 45m |
| 2026-07-07 | AFL423 | - | Jul 7, 21:25 UTC | Jul 8, 16:50 UTC | 19h 25m |
| 2026-07-07 | AFL480 | - | Jul 7, 01:40 UTC | Jul 7, 19:10 UTC | 17h 30m |
| 2026-07-06 | AFL484 | SVO → SVO | Jul 6, 21:35 UTC | Jul 6, 22:25 UTC | 50m |
| 2026-07-06 | AFL423 | - | Jul 6, 08:40 UTC | Jul 6, 15:10 UTC | 6h 30m |
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-73704 page for operator, model, and routing details .