sensors Mode-S transponder
151DA5
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73125 · BOEING 737-800
- Hex
- 151DA5
- Octal
- 05216645
- Decimal
- 1,383,845
- Country
- RU
- Tail
- RA-73125
- Type
- B738
- Flights observed
- 226
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 45m ago
Current position
Country allocation
The ICAO 24-bit address 151DA5 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 |
|---|---|---|---|
| AFL425 | - | 19 | 2026-07-05 |
| AFL423 | - | 16 | 2026-06-21 |
| AFL2120 | Aeroflot Russian Airlines | 12 | 2026-06-08 |
| AFL2121 | - | 11 | 2026-06-24 |
| AFL429 | - | 10 | 2026-07-11 |
| AFL428 | - | 10 | 2026-07-10 |
| AFL2124 | - | 8 | 2026-06-22 |
| AFL427 | Aeroflot Russian Airlines | 7 | 2026-06-11 |
| AFL2126 | Aeroflot Russian Airlines | 7 | 2026-05-31 |
| AFL426 | - | 6 | 2026-06-14 |
| AFL2132 | - | 6 | 2026-06-24 |
| AFL917 | - | 5 | 2026-07-01 |
| AFL422 | - | 5 | 2026-06-19 |
| AFL421 | - | 5 | 2026-07-09 |
| AFL2125 | - | 5 | 2026-07-04 |
| AFL2122 | - | 5 | 2026-07-13 |
| AFL1443 | Aeroflot Russian Airlines | 5 | 2026-04-22 |
| AFL916 | - | 4 | 2026-07-11 |
| AFL803 | - | 4 | 2026-07-08 |
| AFL424 | - | 4 | 2026-07-04 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | AFL2123 | - | Jul 14, 14:35 UTC | Jul 14, 15:05 UTC | 30m |
| 2026-07-13 | AFL2123 | - | Jul 13, 15:20 UTC | Jul 14, 13:10 UTC | 21h 50m |
| 2026-07-13 | AFL2123 | - | Jul 13, 14:25 UTC | Jul 14, 13:10 UTC | 22h 45m |
| 2026-07-13 | AFL2122 | - | Jul 13, 10:50 UTC | Jul 13, 12:50 UTC | 2h 0m |
| 2026-07-12 | AFL2122 | - | Jul 12, 13:20 UTC | Jul 13, 12:50 UTC | 23h 30m |
| 2026-07-11 | AFL429 | AUE → AYT | Jul 11, 18:30 UTC | Jul 12, 11:15 UTC | 16h 45m |
| 2026-07-11 | AFL916 | - | Jul 11, 08:01 UTC | Jul 11, 16:15 UTC | 8h 15m |
| 2026-07-10 | AFL428 | - | Jul 10, 16:35 UTC | Jul 11, 05:45 UTC | 13h 11m |
| 2026-07-09 | AFL421 | - | Jul 9, 19:20 UTC | Jul 10, 14:55 UTC | 19h 35m |
| 2026-07-09 | AFL421 | - | Jul 9, 18:20 UTC | Jul 10, 14:55 UTC | 20h 35m |
| 2026-07-09 | AFL421 | - | Jul 9, 15:20 UTC | Jul 10, 14:55 UTC | 23h 35m |
| 2026-07-09 | AFL421 | - | Jul 9, 14:15 UTC | Jul 10, 13:15 UTC | 23h 0m |
| 2026-07-08 | AFL803 | - | Jul 8, 15:25 UTC | Jul 9, 15:15 UTC | 23h 50m |
| 2026-07-08 | AFL676 | - | Jul 8, 05:55 UTC | Jul 8, 13:50 UTC | 7h 55m |
| 2026-07-08 | AFL802 | - | Jul 8, 03:15 UTC | Jul 8, 03:55 UTC | 40m |
| 2026-07-06 | AFL421 | - | Jul 6, 13:50 UTC | Jul 6, 20:25 UTC | 6h 35m |
| 2026-07-06 | AFL420 | - | Jul 6, 09:40 UTC | Jul 6, 10:40 UTC | 1h 0m |
| 2026-07-05 | AFL425 | - | Jul 5, 03:30 UTC | Jul 5, 20:55 UTC | 17h 25m |
| 2026-07-04 | AFL424 | SVO → SVO | Jul 4, 22:45 UTC | Jul 4, 23:20 UTC | 35m |
| 2026-07-04 | AFL2125 | - | Jul 4, 13:40 UTC | Jul 4, 15:25 UTC | 1h 45m |
| 2026-07-03 | AFL2161 | AYT → SVO | Jul 3, 15:55 UTC | Jul 4, 11:00 UTC | 19h 5m |
| 2026-07-03 | AFL2160 | - | Jul 3, 13:45 UTC | Jul 3, 14:25 UTC | 40m |
| 2026-07-03 | AFL2129 | AYT → SVO | Jul 3, 03:40 UTC | Jul 3, 05:25 UTC | 1h 45m |
| 2026-07-02 | AFL2159 | - | Jul 2, 14:45 UTC | Jul 3, 02:15 UTC | 11h 30m |
| 2026-07-02 | AFL2158 | - | Jul 2, 12:55 UTC | Jul 2, 13:15 UTC | 20m |
| 2026-07-02 | AFL2158 | SVO → SVO | Jul 2, 08:45 UTC | Jul 2, 09:40 UTC | 55m |
| 2026-07-01 | AFL419 | - | Jul 1, 19:20 UTC | Jul 1, 20:40 UTC | 1h 20m |
| 2026-07-01 | AFL916 | - | Jul 1, 15:30 UTC | Jul 1, 17:05 UTC | 1h 35m |
| 2026-07-01 | AFL917 | - | Jul 1, 03:45 UTC | Jul 1, 10:20 UTC | 6h 35m |
| 2026-06-30 | AFL917 | - | Jun 30, 14:40 UTC | Jul 1, 10:20 UTC | 19h 40m |
| 2026-06-30 | AFL2122 | - | Jun 30, 03:00 UTC | Jun 30, 12:55 UTC | 9h 55m |
| 2026-06-29 | AFL2159 | - | Jun 29, 15:04 UTC | Jun 29, 16:55 UTC | 1h 50m |
| 2026-06-29 | AFL2158 | - | Jun 29, 13:04 UTC | Jun 29, 13:14 UTC | 10m |
| 2026-06-27 | AFL429 | - | Jun 27, 20:19 UTC | Jun 27, 23:04 UTC | 2h 45m |
| 2026-06-27 | AFL916 | - | Jun 27, 16:35 UTC | Jun 27, 17:59 UTC | 1h 25m |
| 2026-06-27 | AFL428 | - | Jun 27, 04:39 UTC | Jun 27, 06:09 UTC | 1h 30m |
| 2026-06-26 | AFL428 | - | Jun 26, 09:20 UTC | Jun 27, 06:09 UTC | 20h 50m |
| 2026-06-26 | AFL429 | - | Jun 26, 07:20 UTC | Jun 27, 06:09 UTC | 22h 50m |
| 2026-06-26 | AFL429 | - | Jun 26, 07:10 UTC | Jun 27, 05:15 UTC | 22h 5m |
| 2026-06-25 | AFL428 | - | Jun 25, 16:50 UTC | Jun 26, 05:05 UTC | 12h 15m |
| 2026-06-25 | AFL2133 | - | Jun 25, 01:50 UTC | Jun 25, 14:14 UTC | 12h 25m |
| 2026-06-24 | AFL2132 | - | Jun 24, 23:40 UTC | Jun 24, 23:54 UTC | 15m |
| 2026-06-24 | AFL2121 | - | Jun 24, 11:09 UTC | Jun 24, 11:50 UTC | 40m |
| 2026-06-23 | AFL2157 | AYT → SVO | Jun 23, 16:09 UTC | Jun 24, 09:39 UTC | 17h 30m |
| 2026-06-23 | AFL2156 | SVO → AYT | Jun 23, 03:39 UTC | Jun 23, 14:35 UTC | 10h 55m |
| 2026-06-22 | AFL2125 | AYT → SVO | Jun 22, 14:40 UTC | Jun 23, 01:50 UTC | 11h 10m |
| 2026-06-22 | AFL2124 | - | Jun 22, 12:19 UTC | Jun 22, 13:05 UTC | 45m |
| 2026-06-22 | AFL2124 | SVO → SVO | Jun 22, 08:19 UTC | Jun 22, 08:44 UTC | 25m |
| 2026-06-21 | AFL423 | - | Jun 21, 09:04 UTC | Jun 21, 16:14 UTC | 7h 10m |
| 2026-06-20 | AFL423 | - | Jun 20, 15:24 UTC | Jun 21, 14:54 UTC | 23h 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-73125 page for operator, model, and routing details .