sensors Mode-S transponder
151DA8
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73128 · BOEING 737-800
- Hex
- 151DA8
- Octal
- 05216650
- Decimal
- 1,383,848
- Country
- RU
- Tail
- RA-73128
- Type
- B738
- Flights observed
- 211
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 12h ago
Last known position
Country allocation
The ICAO 24-bit address 151DA8 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 |
|---|---|---|---|
| AFL426 | Aeroflot Russian Airlines | 17 | 2026-06-06 |
| AFL913 | Aeroflot Russian Airlines | 10 | 2026-05-10 |
| AFL423 | - | 10 | 2026-06-29 |
| AFL2160 | - | 9 | 2026-07-15 |
| AFL909 | Aeroflot Russian Airlines | 8 | 2026-05-05 |
| AFL429 | - | 8 | 2026-07-10 |
| AFL2122 | - | 8 | 2026-07-10 |
| AFL912 | Aeroflot Russian Airlines | 6 | 2026-05-10 |
| AFL428 | - | 6 | 2026-07-09 |
| AFL427 | - | 6 | 2026-06-28 |
| AFL2161 | - | 6 | 2026-07-08 |
| AFL2124 | - | 6 | 2026-06-14 |
| AFL803 | - | 5 | 2026-07-05 |
| AFL421 | - | 5 | 2026-07-16 |
| AFL2125 | Aeroflot Russian Airlines | 5 | 2026-06-14 |
| AFL908 | Aeroflot Russian Airlines | 4 | 2026-05-08 |
| AFL677 | - | 4 | 2026-07-05 |
| AFL422 | - | 4 | 2026-06-29 |
| AFL2132 | - | 4 | 2026-06-25 |
| AFL2123 | - | 4 | 2026-07-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | AFL2123 | - | Jul 17, 14:24 UTC | Jul 17, 16:19 UTC | 1h 55m |
| 2026-07-16 | AFL421 | - | Jul 16, 18:05 UTC | Jul 17, 12:50 UTC | 18h 45m |
| 2026-07-16 | AFL421 | - | Jul 16, 17:45 UTC | Jul 17, 12:50 UTC | 19h 5m |
| 2026-07-16 | AFL421 | - | Jul 16, 14:05 UTC | Jul 17, 12:50 UTC | 22h 45m |
| 2026-07-16 | AFL420 | - | Jul 16, 13:20 UTC | Jul 16, 19:20 UTC | 6h 0m |
| 2026-07-15 | AFL420 | - | Jul 15, 16:20 UTC | Jul 16, 15:25 UTC | 23h 5m |
| 2026-07-15 | AFL2160 | - | Jul 15, 13:55 UTC | Jul 15, 14:30 UTC | 35m |
| 2026-07-15 | AFL2129 | - | Jul 15, 03:50 UTC | Jul 15, 05:30 UTC | 1h 40m |
| 2026-07-15 | AFL2128 | - | Jul 15, 01:50 UTC | Jul 15, 02:25 UTC | 35m |
| 2026-07-14 | AFL2128 | SVO → SVO | Jul 14, 21:45 UTC | Jul 14, 22:10 UTC | 25m |
| 2026-07-14 | AFL2127 | - | Jul 14, 14:30 UTC | Jul 14, 14:55 UTC | 25m |
| 2026-07-13 | AFL421 | - | Jul 13, 18:05 UTC | Jul 14, 12:45 UTC | 18h 40m |
| 2026-07-13 | AFL421 | - | Jul 13, 17:40 UTC | Jul 14, 12:45 UTC | 19h 5m |
| 2026-07-13 | AFL420 | - | Jul 13, 14:55 UTC | Jul 13, 15:35 UTC | 40m |
| 2026-07-12 | AFL425 | - | Jul 12, 18:05 UTC | Jul 13, 15:35 UTC | 21h 30m |
| 2026-07-12 | AFL425 | - | Jul 12, 17:55 UTC | Jul 13, 15:35 UTC | 21h 40m |
| 2026-07-12 | AFL424 | - | Jul 12, 03:10 UTC | Jul 12, 15:50 UTC | 12h 40m |
| 2026-07-11 | AFL424 | - | Jul 11, 16:05 UTC | Jul 12, 15:50 UTC | 23h 45m |
| 2026-07-11 | AFL2123 | - | Jul 11, 14:55 UTC | Jul 12, 08:20 UTC | 17h 25m |
| 2026-07-10 | AFL2122 | - | Jul 10, 18:50 UTC | Jul 11, 13:20 UTC | 18h 30m |
| 2026-07-10 | AFL1864 | - | Jul 10, 17:00 UTC | Jul 10, 17:10 UTC | 10m |
| 2026-07-10 | AFL429 | - | Jul 10, 07:15 UTC | Jul 10, 09:50 UTC | 2h 35m |
| 2026-07-09 | AFL428 | - | Jul 9, 18:50 UTC | Jul 10, 05:20 UTC | 10h 30m |
| 2026-07-09 | AFL1864 | - | Jul 9, 17:00 UTC | Jul 9, 17:10 UTC | 10m |
| 2026-07-09 | AFL2149 | - | Jul 9, 06:05 UTC | Jul 9, 07:50 UTC | 1h 45m |
| 2026-07-08 | AFL2161 | - | Jul 8, 16:00 UTC | Jul 9, 04:05 UTC | 12h 5m |
| 2026-07-08 | AFL2160 | - | Jul 8, 13:45 UTC | Jul 8, 14:25 UTC | 40m |
| 2026-07-07 | AFL2157 | - | Jul 7, 16:30 UTC | Jul 7, 18:05 UTC | 1h 35m |
| 2026-07-07 | AFL2156 | - | Jul 7, 14:45 UTC | Jul 7, 15:15 UTC | 30m |
| 2026-07-07 | AFL2129 | - | Jul 7, 03:50 UTC | Jul 7, 04:10 UTC | 20m |
| 2026-07-06 | AFL2123 | - | Jul 6, 14:45 UTC | Jul 7, 02:30 UTC | 11h 45m |
| 2026-07-06 | AFL2122 | - | Jul 6, 11:30 UTC | Jul 6, 13:10 UTC | 1h 40m |
| 2026-07-05 | AFL2122 | - | Jul 5, 14:05 UTC | Jul 6, 13:10 UTC | 23h 5m |
| 2026-07-05 | AFL803 | - | Jul 5, 13:35 UTC | Jul 6, 12:00 UTC | 22h 25m |
| 2026-07-05 | AFL676 | - | Jul 5, 11:10 UTC | Jul 5, 12:00 UTC | 50m |
| 2026-07-05 | AFL677 | - | Jul 5, 06:00 UTC | Jul 5, 07:25 UTC | 1h 25m |
| 2026-07-05 | AFL802 | - | Jul 5, 03:00 UTC | Jul 5, 03:25 UTC | 25m |
| 2026-07-04 | AFL2149 | - | Jul 4, 06:55 UTC | Jul 4, 08:40 UTC | 1h 45m |
| 2026-07-03 | AFL2127 | AYT → SVO | Jul 3, 14:20 UTC | Jul 4, 05:15 UTC | 14h 55m |
| 2026-07-03 | AFL2126 | - | Jul 3, 03:15 UTC | Jul 3, 12:30 UTC | 9h 15m |
| 2026-07-02 | AFL1966 | - | Jul 2, 22:35 UTC | Jul 2, 23:30 UTC | 55m |
| 2026-07-02 | AFL2123 | - | Jul 2, 14:30 UTC | Jul 2, 16:20 UTC | 1h 50m |
| 2026-07-02 | AFL2122 | - | Jul 2, 11:20 UTC | Jul 2, 13:00 UTC | 1h 40m |
| 2026-07-01 | AFL2122 | - | Jul 1, 14:25 UTC | Jul 2, 13:00 UTC | 22h 35m |
| 2026-07-01 | AFL803 | - | Jul 1, 13:35 UTC | Jul 2, 11:50 UTC | 22h 15m |
| 2026-07-01 | AFL676 | - | Jul 1, 10:30 UTC | Jul 1, 12:10 UTC | 1h 40m |
| 2026-07-01 | AFL677 | - | Jul 1, 06:00 UTC | Jul 1, 07:25 UTC | 1h 25m |
| 2026-07-01 | AFL802 | - | Jul 1, 02:25 UTC | Jul 1, 03:40 UTC | 1h 15m |
| 2026-06-30 | AFL1548 | SVO → OVB | Jun 30, 16:05 UTC | Jun 30, 16:15 UTC | 10m |
| 2026-06-29 | AFL425 | - | Jun 29, 14:04 UTC | Jun 30, 09:45 UTC | 19h 41m |
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-73128 page for operator, model, and routing details .