sensors Mode-S transponder
151DA9
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73129 · BOEING 737-800
- Hex
- 151DA9
- Octal
- 05216651
- Decimal
- 1,383,849
- Country
- RU
- Tail
- RA-73129
- Type
- B738
- Flights observed
- 219
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- Jul 26, 17:45 UTC
Last known position
Country allocation
The ICAO 24-bit address 151DA9 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 |
|---|---|---|---|
| AFL905 | Aeroflot Russian Airlines | 12 | 2026-06-14 |
| AFL904 | Aeroflot Russian Airlines | 10 | 2026-06-12 |
| AFL900 | Aeroflot Russian Airlines | 10 | 2026-06-10 |
| AFL2149 | - | 10 | 2026-07-03 |
| AFL427 | Aeroflot Russian Airlines | 9 | 2026-05-16 |
| AFL901 | Aeroflot Russian Airlines | 8 | 2026-06-13 |
| AFL2122 | - | 8 | 2026-07-12 |
| AFL909 | Aeroflot Russian Airlines | 7 | 2026-07-20 |
| AFL2148 | - | 7 | 2026-07-03 |
| AFL2124 | - | 7 | 2026-07-08 |
| AFL2123 | - | 7 | 2026-07-12 |
| AFL2121 | Aeroflot Russian Airlines | 7 | 2026-07-24 |
| AFL913 | - | 6 | 2026-07-19 |
| AFL2125 | - | 6 | 2026-07-11 |
| AFL803 | - | 5 | 2026-07-10 |
| AFL428 | - | 5 | 2026-06-28 |
| AFL423 | - | 5 | 2026-06-19 |
| AFL2160 | Aeroflot Russian Airlines | 5 | 2026-07-26 |
| AFL2126 | - | 5 | 2026-07-13 |
| AFL2120 | - | 5 | 2026-07-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | AFL2161 | AYT → SVO | Jul 26, 16:05 UTC | Jul 26, 17:45 UTC | 1h 40m |
| 2026-07-26 | AFL2160 | SVO → AYT | Jul 26, 14:15 UTC | Jul 26, 14:50 UTC | 35m |
| 2026-07-25 | AFL2160 | SVO → AYT | Jul 25, 18:20 UTC | Jul 26, 14:50 UTC | 20h 31m |
| 2026-07-25 | AFL2157 | AYT → SVO | Jul 25, 17:10 UTC | Jul 26, 14:15 UTC | 21h 6m |
| 2026-07-25 | AFL2156 | SVO → AYT | Jul 25, 04:20 UTC | Jul 25, 15:45 UTC | 11h 25m |
| 2026-07-25 | AFL2128 | SVO → AYT | Jul 25, 02:25 UTC | Jul 25, 02:50 UTC | 25m |
| 2026-07-24 | AFL2128 | SVO → AYT | Jul 24, 21:50 UTC | Jul 24, 22:45 UTC | 55m |
| 2026-07-24 | AFL2121 | BJV → SVO | Jul 24, 11:40 UTC | Jul 24, 12:20 UTC | 40m |
| 2026-07-23 | AFL2161 | - | Jul 23, 18:25 UTC | Jul 24, 10:25 UTC | 16h 0m |
| 2026-07-23 | AFL2129 | AYT → SVO | Jul 23, 03:45 UTC | Jul 23, 16:40 UTC | 12h 55m |
| 2026-07-23 | AFL2128 | SVO → AYT | Jul 23, 00:40 UTC | Jul 23, 02:25 UTC | 1h 45m |
| 2026-07-22 | AFL2128 | SVO → AYT | Jul 22, 21:50 UTC | Jul 22, 22:15 UTC | 25m |
| 2026-07-22 | AFL2121 | - | Jul 22, 11:25 UTC | Jul 22, 12:00 UTC | 35m |
| 2026-07-20 | AFL909 | HRG → KZN | Jul 20, 19:55 UTC | Jul 21, 16:05 UTC | 20h 9m |
| 2026-07-20 | AFL743 | SVO → SVX | Jul 20, 07:10 UTC | Jul 20, 17:55 UTC | 10h 45m |
| 2026-07-19 | AFL913 | - | Jul 19, 10:20 UTC | Jul 20, 05:25 UTC | 19h 5m |
| 2026-07-19 | AFL913 | - | Jul 19, 09:05 UTC | Jul 20, 05:25 UTC | 20h 20m |
| 2026-07-18 | AFL913 | - | Jul 18, 20:20 UTC | Jul 19, 16:15 UTC | 19h 55m |
| 2026-07-18 | AFL913 | - | Jul 18, 20:05 UTC | Jul 19, 16:15 UTC | 20h 10m |
| 2026-07-18 | AFL909 | HRG → KZN | Jul 18, 03:20 UTC | Jul 18, 18:35 UTC | 15h 15m |
| 2026-07-17 | AFL909 | HRG → KZN | Jul 17, 14:20 UTC | Jul 18, 11:05 UTC | 20h 46m |
| 2026-07-17 | AFL909 | HRG → KZN | Jul 17, 13:35 UTC | Jul 18, 11:05 UTC | 21h 31m |
| 2026-07-16 | AFL912 | KZN → SSH | Jul 16, 14:20 UTC | Jul 17, 10:20 UTC | 20h 0m |
| 2026-07-16 | AFL909 | - | Jul 16, 13:00 UTC | Jul 17, 10:20 UTC | 21h 20m |
| 2026-07-16 | AFL909 | - | Jul 16, 09:25 UTC | Jul 16, 15:45 UTC | 6h 20m |
| 2026-07-15 | AFL909 | - | Jul 15, 16:25 UTC | Jul 16, 15:45 UTC | 23h 20m |
| 2026-07-15 | AFL913 | - | Jul 15, 14:45 UTC | Jul 16, 14:15 UTC | 23h 30m |
| 2026-07-15 | AFL913 | - | Jul 15, 11:20 UTC | Jul 15, 17:25 UTC | 6h 5m |
| 2026-07-14 | AFL2121 | - | Jul 14, 11:20 UTC | Jul 14, 11:55 UTC | 35m |
| 2026-07-13 | AFL2120 | - | Jul 13, 14:30 UTC | Jul 14, 09:55 UTC | 19h 25m |
| 2026-07-13 | AFL2126 | - | Jul 13, 12:10 UTC | Jul 13, 12:50 UTC | 40m |
| 2026-07-13 | AFL2126 | - | Jul 13, 03:15 UTC | Jul 13, 11:25 UTC | 8h 10m |
| 2026-07-12 | AFL2123 | - | Jul 12, 15:20 UTC | Jul 12, 15:50 UTC | 30m |
| 2026-07-12 | AFL2122 | - | Jul 12, 13:15 UTC | Jul 12, 13:45 UTC | 30m |
| 2026-07-11 | AFL2125 | - | Jul 11, 13:40 UTC | Jul 11, 14:05 UTC | 25m |
| 2026-07-10 | AFL803 | - | Jul 10, 17:30 UTC | Jul 11, 11:25 UTC | 17h 55m |
| 2026-07-10 | AFL677 | - | Jul 10, 07:50 UTC | Jul 10, 09:00 UTC | 1h 10m |
| 2026-07-09 | AFL1563 | - | Jul 9, 02:10 UTC | Jul 9, 10:30 UTC | 8h 20m |
| 2026-07-08 | AFL2125 | - | Jul 8, 13:15 UTC | Jul 8, 15:00 UTC | 1h 45m |
| 2026-07-08 | AFL2124 | - | Jul 8, 11:35 UTC | Jul 8, 12:00 UTC | 25m |
| 2026-07-06 | AFL2129 | - | Jul 6, 04:45 UTC | Jul 6, 06:30 UTC | 1h 45m |
| 2026-07-05 | AFL2123 | - | Jul 5, 14:50 UTC | Jul 5, 16:45 UTC | 1h 55m |
| 2026-07-04 | AFL2122 | - | Jul 4, 18:20 UTC | Jul 5, 13:10 UTC | 18h 50m |
| 2026-07-04 | AFL2157 | - | Jul 4, 16:45 UTC | Jul 5, 13:10 UTC | 20h 25m |
| 2026-07-04 | AFL2156 | - | Jul 4, 13:35 UTC | Jul 4, 15:30 UTC | 1h 55m |
| 2026-07-03 | AFL2156 | - | Jul 3, 19:05 UTC | Jul 4, 15:30 UTC | 20h 25m |
| 2026-07-03 | AFL2149 | - | Jul 3, 06:10 UTC | Jul 3, 07:55 UTC | 1h 45m |
| 2026-07-03 | AFL2148 | - | Jul 3, 03:35 UTC | Jul 3, 04:00 UTC | 25m |
| 2026-07-02 | AFL2149 | - | Jul 2, 06:35 UTC | Jul 2, 06:55 UTC | 20m |
| 2026-07-01 | AFL2159 | - | Jul 1, 14:30 UTC | Jul 2, 04:00 UTC | 13h 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-73129 page for operator, model, and routing details .