sensors Mode-S transponder
151FFF
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73727 · AIRBUS A-321
- Hex
- 151FFF
- Octal
- 05217777
- Decimal
- 1,384,447
- Country
- RU
- Tail
- RA-73727
- Type
- A321
- Flights observed
- 82
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 9h ago
Last known position
Country allocation
The ICAO 24-bit address 151FFF 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 |
|---|---|---|---|
| AFL1883 | Aeroflot Russian Airlines | 4 | 2026-04-20 |
| AFL1882 | Aeroflot Russian Airlines | 4 | 2026-05-06 |
| AFL1019 | Aeroflot Russian Airlines | 4 | 2026-05-27 |
| AFL1451 | Aeroflot Russian Airlines | 3 | 2026-05-27 |
| AFL1420 | Aeroflot Russian Airlines | 3 | 2026-05-24 |
| AFL1198 | Aeroflot Russian Airlines | 3 | 2026-05-25 |
| AFL1108 | Aeroflot Russian Airlines | 3 | 2026-04-27 |
| AFL1018 | Aeroflot Russian Airlines | 3 | 2026-04-24 |
| AFL1008 | Aeroflot Russian Airlines | 3 | 2026-05-29 |
| AFL2142 | Aeroflot Russian Airlines | 2 | 2026-05-06 |
| AFL1942 | Aeroflot Russian Airlines | 2 | 2026-05-17 |
| AFL1886 | Aeroflot Russian Airlines | 2 | 2026-04-26 |
| AFL1487 | Aeroflot Russian Airlines | 2 | 2026-04-25 |
| AFL1450 | Aeroflot Russian Airlines | 2 | 2026-05-26 |
| AFL1264 | Aeroflot Russian Airlines | 2 | 2026-05-21 |
| AFL1261 | Aeroflot Russian Airlines | 2 | 2026-05-16 |
| AFL1208 | Aeroflot Russian Airlines | 2 | 2026-05-11 |
| AFL1024 | Aeroflot Russian Airlines | 2 | 2026-05-23 |
| AFL1017 | - | 2 | 2026-04-16 |
| AFL1016 | Aeroflot Russian Airlines | 2 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | AFL1008 | SVO → KGD | May 29, 18:50 UTC | May 29, 19:35 UTC | 45m |
| 2026-05-29 | AFL1688 | SVO → OMS | May 29, 07:20 UTC | May 29, 14:50 UTC | 7h 30m |
| 2026-05-27 | AFL1019 | KGD → SVO | May 27, 12:40 UTC | May 27, 14:25 UTC | 1h 45m |
| 2026-05-27 | AFL1451 | KEJ → SVO | May 27, 01:34 UTC | May 27, 11:10 UTC | 9h 36m |
| 2026-05-26 | AFL1450 | SVO → KEJ | May 26, 10:29 UTC | May 27, 00:00 UTC | 13h 30m |
| 2026-05-26 | AFL1486 | SVO → KJA | May 26, 07:10 UTC | May 26, 07:34 UTC | 25m |
| 2026-05-25 | AFL1198 | SVO → KZN | May 25, 19:40 UTC | May 25, 19:59 UTC | 20m |
| 2026-05-24 | AFL1420 | SVO → CEK | May 24, 20:15 UTC | May 25, 19:44 UTC | 23h 29m |
| 2026-05-24 | AFL1420 | SVO → CEK | May 24, 19:05 UTC | May 24, 19:45 UTC | 40m |
| 2026-05-24 | AFL1028 | SVO → MRV | May 24, 09:20 UTC | May 24, 09:50 UTC | 30m |
| 2026-05-24 | AFL1073 | KGD → SVO | May 24, 00:40 UTC | May 24, 01:50 UTC | 1h 10m |
| 2026-05-23 | AFL1072 | SVO → KGD | May 23, 20:40 UTC | May 23, 22:45 UTC | 2h 5m |
| 2026-05-23 | AFL1025 | KGD → SVO | May 23, 15:20 UTC | May 23, 17:15 UTC | 1h 55m |
| 2026-05-23 | AFL1024 | SVO → KGD | May 23, 11:30 UTC | May 23, 13:35 UTC | 2h 5m |
| 2026-05-22 | AFL1895 | OSS → SVO | May 22, 20:30 UTC | May 23, 08:50 UTC | 12h 19m |
| 2026-05-21 | AFL1264 | SVO → KRR | May 21, 03:15 UTC | May 21, 03:40 UTC | 25m |
| 2026-05-19 | AFL1016 | SVO → KGD | May 19, 08:15 UTC | May 19, 08:50 UTC | 35m |
| 2026-05-17 | AFL1942 | SVO → ALA | May 17, 23:10 UTC | May 17, 23:20 UTC | 10m |
| 2026-05-17 | AFL1942 | SVO → ALA | May 17, 22:01 UTC | May 17, 22:35 UTC | 35m |
| 2026-05-16 | AFL1261 | UFA → SVO | May 16, 15:01 UTC | May 17, 06:35 UTC | 15h 34m |
| 2026-05-16 | AFL1261 | UFA → SVO | May 16, 07:51 UTC | May 17, 06:35 UTC | 22h 45m |
| 2026-05-15 | AFL1484 | SVO → KJA | May 15, 00:55 UTC | May 15, 17:45 UTC | 16h 49m |
| 2026-05-13 | AFL1006 | SVO → KGD | May 13, 17:20 UTC | May 13, 18:05 UTC | 45m |
| 2026-05-12 | AFL1008 | SVO → KGD | May 12, 19:10 UTC | May 12, 19:50 UTC | 40m |
| 2026-05-11 | AFL1420 | SVO → CEK | May 11, 19:50 UTC | May 12, 04:10 UTC | 8h 20m |
| 2026-05-11 | AFL1208 | SVO → KRR | May 11, 07:40 UTC | May 11, 08:00 UTC | 20m |
| 2026-05-10 | AFL1264 | SVO → KRR | May 10, 02:30 UTC | May 10, 02:55 UTC | 25m |
| 2026-05-08 | AFL7437 | - | May 8, 22:50 UTC | May 8, 23:30 UTC | 40m |
| 2026-05-06 | AFL1882 | SVO → FRU | May 6, 19:50 UTC | May 7, 14:50 UTC | 19h 1m |
| 2026-05-06 | AFL1882 | SVO → FRU | May 6, 18:55 UTC | May 6, 19:15 UTC | 20m |
| 2026-05-06 | AFL2143 | AYT → SVO | May 6, 11:10 UTC | May 6, 13:05 UTC | 1h 55m |
| 2026-05-06 | AFL2142 | SVO → AYT | May 6, 09:00 UTC | May 6, 09:10 UTC | 10m |
| 2026-05-06 | AFL2142 | SVO → AYT | May 6, 07:45 UTC | May 6, 08:15 UTC | 30m |
| 2026-05-05 | AFL1024 | SVO → KGD | May 5, 18:10 UTC | May 5, 19:00 UTC | 50m |
| 2026-05-03 | AFL2161 | AYT → SVO | May 3, 15:55 UTC | May 4, 08:50 UTC | 16h 55m |
| 2026-05-03 | AFL2160 | SVO → AYT | May 3, 12:40 UTC | May 3, 13:20 UTC | 40m |
| 2026-05-01 | AFL1792 | SVO → UUS | May 1, 04:55 UTC | May 1, 05:20 UTC | 25m |
| 2026-04-29 | AFL1775 | - | Apr 29, 09:15 UTC | Apr 29, 11:25 UTC | 2h 10m |
| 2026-04-29 | AFL1774 | SVO → KEJ | Apr 29, 05:40 UTC | Apr 29, 07:40 UTC | 2h 0m |
| 2026-04-27 | AFL1108 | SVO → KRR | Apr 27, 06:25 UTC | Apr 27, 06:55 UTC | 30m |
| 2026-04-26 | AFL1886 | SVO → FRU | Apr 26, 06:40 UTC | Apr 26, 16:20 UTC | 9h 40m |
| 2026-04-25 | AFL1487 | KJA → SVO | Apr 25, 10:30 UTC | Apr 25, 16:05 UTC | 5h 35m |
| 2026-04-24 | AFL1487 | KJA → SVO | Apr 24, 17:00 UTC | Apr 25, 13:40 UTC | 20h 40m |
| 2026-04-24 | AFL1019 | KGD → SVO | Apr 24, 12:35 UTC | Apr 24, 14:35 UTC | 2h 0m |
| 2026-04-24 | AFL1018 | SVO → KGD | Apr 24, 09:05 UTC | Apr 24, 11:10 UTC | 2h 5m |
| 2026-04-24 | AFL1531 | TOF → SVO | Apr 24, 01:25 UTC | Apr 24, 04:35 UTC | 3h 10m |
| 2026-04-23 | AFL1530 | SVO → TOF | Apr 23, 23:30 UTC | Apr 23, 23:50 UTC | 20m |
| 2026-04-23 | AFL1137 | AER → SVO | Apr 23, 18:00 UTC | Apr 23, 18:10 UTC | 10m |
| 2026-04-22 | AFL1887 | FRU → SVO | Apr 22, 16:15 UTC | Apr 22, 16:35 UTC | 20m |
| 2026-04-22 | AFL1886 | SVO → FRU | Apr 22, 07:05 UTC | Apr 22, 15:25 UTC | 8h 20m |
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-73727 page for operator, model, and routing details .