sensors Mode-S transponder
151D91
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73105 · BOEING 737-800
- Hex
- 151D91
- Octal
- 05216621
- Decimal
- 1,383,825
- Country
- RU
- Tail
- RA-73105
- Type
- B738
- Flights observed
- 83
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 151D91 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 |
|---|---|---|---|
| AFL1455 | Aeroflot Russian Airlines | 11 | 2026-05-28 |
| AFL1563 | Aeroflot Russian Airlines | 9 | 2026-05-20 |
| AFL1751 | Aeroflot Russian Airlines | 7 | 2026-05-22 |
| AFL1562 | Aeroflot Russian Airlines | 5 | 2026-05-17 |
| AFL1454 | Aeroflot Russian Airlines | 5 | 2026-05-28 |
| AFL1443 | Aeroflot Russian Airlines | 5 | 2026-05-26 |
| AFL2933 | Aeroflot Russian Airlines | 4 | 2026-04-28 |
| AFL1491 | Aeroflot Russian Airlines | 3 | 2026-05-18 |
| AFL1445 | Aeroflot Russian Airlines | 3 | 2026-05-06 |
| AFL2932 | Aeroflot Russian Airlines | 2 | 2026-04-26 |
| AFL1689 | Aeroflot Russian Airlines | 2 | 2026-05-22 |
| AFL1539 | - | 2 | 2026-04-14 |
| AFL1490 | Aeroflot Russian Airlines | 2 | 2026-05-30 |
| AFL1442 | Aeroflot Russian Airlines | 2 | 2026-04-23 |
| AFL7368 | - | 1 | 2026-04-23 |
| AFL1639 | Aeroflot Russian Airlines | 1 | 2026-05-21 |
| AFL1549 | - | 1 | 2026-04-13 |
| AFL1548 | Aeroflot Russian Airlines | 1 | 2026-04-12 |
| AFL1538 | - | 1 | 2026-04-14 |
| AFL1518 | Aeroflot Russian Airlines | 1 | 2026-05-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | AFL1490 | SVO → KJA | May 30, 10:45 UTC | May 30, 16:00 UTC | 5h 15m |
| 2026-05-30 | AFL1490 | SVO → KJA | May 30, 09:45 UTC | May 30, 10:05 UTC | 20m |
| 2026-05-28 | AFL1455 | UUD → SVO | May 28, 22:05 UTC | May 29, 06:25 UTC | 8h 20m |
| 2026-05-28 | AFL1454 | SVO → UUD | May 28, 18:25 UTC | May 28, 18:50 UTC | 25m |
| 2026-05-26 | AFL1443 | IKT → SVO | May 26, 19:34 UTC | May 27, 06:49 UTC | 11h 15m |
| 2026-05-25 | AFL1518 | SVO → RGK | May 25, 06:50 UTC | May 25, 07:15 UTC | 25m |
| 2026-05-24 | AFL1082 | SVO → GDZ | May 24, 10:45 UTC | May 24, 11:10 UTC | 25m |
| 2026-05-23 | AFL1455 | UUD → SVO | May 23, 21:45 UTC | May 24, 06:25 UTC | 8h 40m |
| 2026-05-22 | AFL1751 | YKS → SVO | May 22, 22:35 UTC | May 23, 10:35 UTC | 11h 59m |
| 2026-05-22 | AFL1751 | YKS → SVO | May 22, 12:55 UTC | May 23, 10:35 UTC | 21h 39m |
| 2026-05-22 | AFL1689 | OMS → SVO | May 22, 04:20 UTC | May 22, 23:30 UTC | 19h 10m |
| 2026-05-22 | AFL1689 | OMS → SVO | May 22, 03:35 UTC | May 22, 23:30 UTC | 19h 55m |
| 2026-05-21 | AFL1639 | OMS → SVO | May 21, 06:45 UTC | May 22, 04:40 UTC | 21h 55m |
| 2026-05-21 | AFL1455 | UUD → SVO | May 21, 04:20 UTC | May 22, 04:15 UTC | 23h 55m |
| 2026-05-20 | AFL1455 | UUD → SVO | May 20, 22:35 UTC | May 21, 07:00 UTC | 8h 25m |
| 2026-05-20 | AFL1455 | UUD → SVO | May 20, 10:30 UTC | May 21, 07:00 UTC | 20h 30m |
| 2026-05-20 | AFL1455 | UUD → SVO | May 20, 08:20 UTC | May 21, 07:00 UTC | 22h 40m |
| 2026-05-20 | AFL1563 | IKT → SVO | May 20, 07:40 UTC | May 21, 04:30 UTC | 20h 50m |
| 2026-05-20 | AFL1563 | IKT → SVO | May 20, 02:20 UTC | May 20, 23:05 UTC | 20h 46m |
| 2026-05-20 | AFL1563 | IKT → SVO | May 20, 01:55 UTC | May 20, 23:05 UTC | 21h 11m |
| 2026-05-19 | AFL1563 | IKT → SVO | May 19, 10:20 UTC | May 20, 08:20 UTC | 22h 1m |
| 2026-05-19 | AFL1563 | IKT → SVO | May 19, 10:05 UTC | May 20, 08:15 UTC | 22h 11m |
| 2026-05-19 | AFL1563 | IKT → SVO | May 19, 07:10 UTC | May 20, 02:35 UTC | 19h 25m |
| 2026-05-19 | AFL1563 | IKT → SVO | May 19, 02:20 UTC | May 20, 02:15 UTC | 23h 55m |
| 2026-05-18 | AFL1563 | IKT → SVO | May 18, 18:00 UTC | May 19, 10:30 UTC | 16h 29m |
| 2026-05-18 | AFL1491 | KJA → SVO | May 18, 15:15 UTC | May 19, 10:30 UTC | 19h 14m |
| 2026-05-18 | AFL1491 | KJA → SVO | May 18, 12:35 UTC | May 19, 10:30 UTC | 21h 54m |
| 2026-05-17 | AFL1491 | KJA → SVO | May 17, 23:55 UTC | May 18, 18:25 UTC | 18h 30m |
| 2026-05-17 | AFL1562 | SVO → IKT | May 17, 02:15 UTC | May 17, 10:25 UTC | 8h 10m |
| 2026-05-16 | AFL1562 | SVO → IKT | May 16, 06:20 UTC | May 17, 02:40 UTC | 20h 20m |
| 2026-05-16 | AFL1562 | SVO → IKT | May 16, 06:10 UTC | May 17, 02:40 UTC | 20h 30m |
| 2026-05-16 | AFL1455 | UUD → SVO | May 16, 03:15 UTC | May 17, 02:15 UTC | 23h 0m |
| 2026-05-15 | AFL1455 | UUD → SVO | May 15, 21:55 UTC | May 16, 06:25 UTC | 8h 31m |
| 2026-05-14 | AFL1136 | SVO → AER | May 14, 10:05 UTC | May 14, 10:35 UTC | 30m |
| 2026-05-14 | AFL1455 | UUD → SVO | May 14, 01:30 UTC | May 14, 06:20 UTC | 4h 50m |
| 2026-05-13 | AFL1454 | SVO → UUD | May 13, 21:45 UTC | May 13, 23:35 UTC | 1h 50m |
| 2026-05-12 | AFL1383 | HMA → SVO | May 12, 03:20 UTC | May 12, 03:50 UTC | 30m |
| 2026-05-10 | AFL1382 | SVO → HMA | May 10, 23:09 UTC | May 11, 03:50 UTC | 4h 40m |
| 2026-05-09 | AFL1440 | SVO → IKT | May 9, 07:15 UTC | May 9, 18:10 UTC | 10h 55m |
| 2026-05-09 | AFL1563 | IKT → SVO | May 9, 05:30 UTC | May 9, 05:35 UTC | 5m |
| 2026-05-09 | AFL1562 | SVO → IKT | May 9, 03:30 UTC | May 9, 03:40 UTC | 10m |
| 2026-05-09 | AFL1562 | SVO → IKT | May 9, 01:55 UTC | May 9, 02:25 UTC | 30m |
| 2026-05-06 | AFL1445 | IKT → SVO | May 6, 18:05 UTC | May 6, 18:15 UTC | 10m |
| 2026-05-06 | AFL1445 | IKT → SVO | May 6, 13:30 UTC | May 6, 17:00 UTC | 3h 30m |
| 2026-05-06 | AFL1445 | IKT → SVO | May 6, 12:01 UTC | May 6, 12:10 UTC | 10m |
| 2026-05-06 | AFL1444 | SVO → IKT | May 6, 05:50 UTC | May 6, 08:30 UTC | 2h 40m |
| 2026-05-04 | AFL1751 | YKS → SVO | May 4, 08:55 UTC | May 5, 03:45 UTC | 18h 51m |
| 2026-05-03 | AFL1751 | YKS → SVO | May 3, 15:00 UTC | May 4, 10:30 UTC | 19h 30m |
| 2026-05-03 | AFL1751 | YKS → SVO | May 3, 12:45 UTC | May 4, 10:30 UTC | 21h 45m |
| 2026-05-03 | AFL1461 | OVB → SVO | May 3, 04:15 UTC | May 3, 15:30 UTC | 11h 15m |
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-73105 page for operator, model, and routing details .