sensors Mode-S transponder
151DB2
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73138 · BOEING 777-300ER
- Hex
- 151DB2
- Octal
- 05216662
- Decimal
- 1,383,858
- Country
- RU
- Tail
- RA-73138
- Type
- B77W
- Flights observed
- 80
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 151DB2 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 |
|---|---|---|---|
| AFL209 | Aeroflot Russian Airlines | 19 | 2026-05-29 |
| AFL1731 | Aeroflot Russian Airlines | 7 | 2026-05-23 |
| AFL321 | Aeroflot Russian Airlines | 5 | 2026-04-27 |
| AFL221 | Aeroflot Russian Airlines | 5 | 2026-05-13 |
| AFL220 | Aeroflot Russian Airlines | 5 | 2026-05-11 |
| AFL204 | Aeroflot Russian Airlines | 5 | 2026-05-10 |
| AFL205 | Aeroflot Russian Airlines | 4 | 2026-05-10 |
| AFL1705 | Aeroflot Russian Airlines | 4 | 2026-04-28 |
| AFL639 | Aeroflot Russian Airlines | 3 | 2026-04-24 |
| AFL275 | Aeroflot Russian Airlines | 3 | 2026-04-18 |
| AFL638 | Aeroflot Russian Airlines | 2 | 2026-04-24 |
| AFL320 | Aeroflot Russian Airlines | 2 | 2026-04-26 |
| AFL233 | Aeroflot Russian Airlines | 2 | 2026-05-14 |
| AFL232 | Aeroflot Russian Airlines | 2 | 2026-04-21 |
| AFL225 | Aeroflot Russian Airlines | 2 | 2026-04-25 |
| AFL224 | Aeroflot Russian Airlines | 2 | 2026-04-22 |
| AFL1730 | Aeroflot Russian Airlines | 2 | 2026-05-23 |
| AFL1715 | Aeroflot Russian Airlines | 2 | 2026-04-27 |
| AFL208 | Aeroflot Russian Airlines | 1 | 2026-04-19 |
| AFL1755 | Aeroflot Russian Airlines | 1 | 2026-04-25 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | AFL209 | PVG → SVO | May 29, 20:15 UTC | May 30, 12:50 UTC | 16h 35m |
| 2026-05-27 | AFL1735 | PKC → SVO | May 27, 19:10 UTC | May 28, 11:10 UTC | 16h 0m |
| 2026-05-25 | AFL209 | PVG → SVO | May 25, 18:35 UTC | May 26, 13:04 UTC | 18h 29m |
| 2026-05-25 | AFL209 | PVG → SVO | May 25, 18:15 UTC | May 26, 13:04 UTC | 18h 50m |
| 2026-05-23 | AFL1731 | PKC → SVO | May 23, 15:15 UTC | May 24, 09:15 UTC | 18h 0m |
| 2026-05-23 | AFL1730 | SVO → PKC | May 23, 13:55 UTC | May 23, 14:10 UTC | 15m |
| 2026-05-23 | AFL1731 | PKC → SVO | May 23, 06:40 UTC | May 23, 08:10 UTC | 1h 30m |
| 2026-05-21 | AFL1731 | PKC → SVO | May 21, 15:25 UTC | May 22, 08:20 UTC | 16h 55m |
| 2026-05-17 | AFL209 | PVG → SVO | May 17, 20:55 UTC | May 18, 11:55 UTC | 15h 0m |
| 2026-05-15 | AFL1723 | KHV → SVO | May 15, 04:45 UTC | May 15, 06:00 UTC | 1h 15m |
| 2026-05-14 | AFL233 | DEL → SVO | May 14, 02:35 UTC | May 14, 07:15 UTC | 4h 40m |
| 2026-05-13 | AFL221 | CAN → SVO | May 13, 08:55 UTC | May 14, 00:05 UTC | 15h 10m |
| 2026-05-12 | AFL221 | CAN → SVO | May 12, 19:45 UTC | May 13, 12:15 UTC | 16h 30m |
| 2026-05-12 | AFL221 | CAN → SVO | May 12, 08:35 UTC | May 12, 20:20 UTC | 11h 45m |
| 2026-05-11 | AFL220 | SVO → CAN | May 11, 17:30 UTC | May 12, 09:25 UTC | 15h 55m |
| 2026-05-11 | AFL220 | SVO → CAN | May 11, 11:55 UTC | May 12, 09:25 UTC | 21h 31m |
| 2026-05-11 | AFL209 | PVG → SVO | May 11, 09:15 UTC | May 11, 20:15 UTC | 11h 1m |
| 2026-05-10 | AFL209 | PVG → SVO | May 10, 20:35 UTC | May 11, 20:15 UTC | 23h 41m |
| 2026-05-10 | AFL209 | PVG → SVO | May 10, 20:14 UTC | May 11, 18:00 UTC | 21h 46m |
| 2026-05-10 | AFL209 | PVG → SVO | May 10, 18:09 UTC | May 11, 12:30 UTC | 18h 20m |
| 2026-05-10 | AFL205 | PKX → SVO | May 10, 07:19 UTC | May 10, 11:35 UTC | 4h 15m |
| 2026-05-10 | AFL204 | SVO → PKX | May 10, 00:34 UTC | May 10, 00:45 UTC | 10m |
| 2026-05-09 | AFL209 | PVG → SVO | May 9, 08:50 UTC | May 9, 22:00 UTC | 13h 10m |
| 2026-05-08 | AFL209 | PVG → SVO | May 8, 20:35 UTC | May 9, 19:40 UTC | 23h 5m |
| 2026-05-08 | AFL209 | PVG → SVO | May 8, 20:15 UTC | May 9, 13:15 UTC | 17h 0m |
| 2026-05-08 | AFL205 | PKX → SVO | May 8, 04:04 UTC | May 8, 21:00 UTC | 16h 55m |
| 2026-05-08 | AFL204 | SVO → PKX | May 8, 00:44 UTC | May 8, 00:54 UTC | 10m |
| 2026-05-07 | AFL221 | CAN → SVO | May 7, 09:05 UTC | May 7, 22:10 UTC | 13h 5m |
| 2026-05-06 | AFL220 | SVO → CAN | May 6, 16:50 UTC | May 7, 09:55 UTC | 17h 5m |
| 2026-05-04 | AFL221 | CAN → SVO | May 4, 19:35 UTC | May 5, 11:15 UTC | 15h 40m |
| 2026-05-03 | AFL220 | SVO → CAN | May 3, 17:45 UTC | May 4, 09:35 UTC | 15h 50m |
| 2026-05-03 | AFL220 | SVO → CAN | May 3, 10:40 UTC | May 4, 09:35 UTC | 22h 55m |
| 2026-05-03 | AFL205 | PKX → SVO | May 3, 04:35 UTC | May 3, 20:35 UTC | 16h 0m |
| 2026-05-03 | AFL204 | SVO → PKX | May 3, 00:35 UTC | May 3, 00:50 UTC | 15m |
| 2026-05-02 | AFL204 | SVO → PKX | May 2, 08:45 UTC | May 2, 22:10 UTC | 13h 25m |
| 2026-05-01 | AFL209 | PVG → SVO | May 1, 20:35 UTC | May 2, 19:55 UTC | 23h 21m |
| 2026-05-01 | AFL209 | PVG → SVO | May 1, 20:25 UTC | May 2, 09:40 UTC | 13h 16m |
| 2026-05-01 | AFL209 | PVG → SVO | May 1, 13:30 UTC | May 2, 09:40 UTC | 20h 10m |
| 2026-04-30 | AFL209 | PVG → SVO | Apr 30, 20:35 UTC | May 1, 09:50 UTC | 13h 15m |
| 2026-04-30 | AFL1731 | PKC → SVO | Apr 30, 06:30 UTC | Apr 30, 21:10 UTC | 14h 40m |
| 2026-04-29 | AFL1731 | PKC → SVO | Apr 29, 15:20 UTC | Apr 30, 07:50 UTC | 16h 29m |
| 2026-04-28 | AFL1705 | VVO → SVO | Apr 28, 17:05 UTC | Apr 29, 10:55 UTC | 17h 50m |
| 2026-04-27 | AFL1715 | KHV → SVO | Apr 27, 20:20 UTC | Apr 28, 12:35 UTC | 16h 15m |
| 2026-04-27 | AFL321 | MLE → SVO | Apr 27, 15:35 UTC | Apr 27, 15:55 UTC | 20m |
| 2026-04-27 | AFL321 | MLE → SVO | Apr 27, 03:10 UTC | Apr 27, 14:40 UTC | 11h 30m |
| 2026-04-26 | AFL320 | SVO → MLE | Apr 26, 20:35 UTC | Apr 26, 20:50 UTC | 15m |
| 2026-04-25 | AFL225 | SVO → ATH | Apr 25, 14:40 UTC | Apr 26, 08:30 UTC | 17h 50m |
| 2026-04-25 | AFL1755 | VVO → SVO | Apr 25, 01:30 UTC | Apr 25, 15:00 UTC | 13h 30m |
| 2026-04-24 | AFL639 | HKT → VVO | Apr 24, 10:10 UTC | Apr 25, 02:45 UTC | 16h 35m |
| 2026-04-24 | AFL639 | HKT → VVO | Apr 24, 06:35 UTC | Apr 25, 02:45 UTC | 20h 10m |
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-73138 page for operator, model, and routing details .