sensors Mode-S transponder
151E51
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73297 · BOEING 737-800
- Hex
- 151E51
- Octal
- 05217121
- Decimal
- 1,384,017
- Country
- RU
- Tail
- RA-73297
- Type
- B738
- Flights observed
- 47
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 4h ago
Last known position
Country allocation
The ICAO 24-bit address 151E51 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 |
|---|---|---|---|
| PBD836 | - | 3 | 2026-05-12 |
| PBD835 | Pobeda | 3 | 2026-05-12 |
| PBD996 | Pobeda | 2 | 2026-05-09 |
| PBD894 | - | 2 | 2026-05-19 |
| PBD571 | - | 2 | 2026-05-26 |
| PBD979 | - | 1 | 2026-05-11 |
| PBD941 | Pobeda | 1 | 2026-04-30 |
| PBD860 | Pobeda | 1 | 2026-05-23 |
| PBD859 | - | 1 | 2026-05-23 |
| PBD770 | - | 1 | 2026-05-07 |
| PBD734 | - | 1 | 2026-05-24 |
| PBD6963 | - | 1 | 2026-04-15 |
| PBD6927 | - | 1 | 2026-04-23 |
| PBD6925 | - | 1 | 2026-04-24 |
| PBD6923 | - | 1 | 2026-05-30 |
| PBD6921 | - | 1 | 2026-04-26 |
| PBD6915 | - | 1 | 2026-04-21 |
| PBD6901 | - | 1 | 2026-04-15 |
| PBD6864 | - | 1 | 2026-05-02 |
| PBD6861 | - | 1 | 2026-05-28 |
Recent flights last 47
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | PBD6923 | SVO → SVO | May 30, 03:40 UTC | May 30, 04:30 UTC | 50m |
| 2026-05-29 | PBD6855 | SVO → SVO | May 29, 15:50 UTC | May 29, 16:10 UTC | 20m |
| 2026-05-29 | PBD588 | KGD → LED | May 29, 11:10 UTC | May 29, 12:00 UTC | 50m |
| 2026-05-29 | PBD587 | LED → KGD | May 29, 08:00 UTC | May 29, 09:15 UTC | 1h 15m |
| 2026-05-28 | PBD6861 | SVO → SVO | May 28, 09:55 UTC | May 28, 11:10 UTC | 1h 15m |
| 2026-05-26 | PBD571 | LED → LED | May 26, 15:09 UTC | May 26, 16:00 UTC | 50m |
| 2026-05-25 | PBD197 | SVO → SVO | May 25, 10:25 UTC | May 25, 10:45 UTC | 20m |
| 2026-05-24 | PBD734 | - | May 24, 00:15 UTC | May 24, 07:25 UTC | 7h 10m |
| 2026-05-23 | PBD486 | ULV → ULV | May 23, 21:00 UTC | May 23, 21:25 UTC | 25m |
| 2026-05-23 | PBD860 | AYT → AYT | May 23, 13:05 UTC | May 23, 13:25 UTC | 20m |
| 2026-05-23 | PBD859 | - | May 23, 11:35 UTC | May 23, 11:50 UTC | 15m |
| 2026-05-21 | PBD528 | - | May 21, 07:55 UTC | May 21, 08:20 UTC | 25m |
| 2026-05-19 | PBD894 | - | May 19, 22:40 UTC | May 19, 23:00 UTC | 20m |
| 2026-05-17 | PBD894 | - | May 17, 19:55 UTC | May 17, 20:50 UTC | 55m |
| 2026-05-16 | PBD578 | GSV → GSV | May 16, 19:20 UTC | May 16, 19:55 UTC | 35m |
| 2026-05-15 | PBD572 | - | May 15, 18:15 UTC | May 15, 18:30 UTC | 15m |
| 2026-05-15 | PBD571 | LED → LED | May 15, 15:00 UTC | May 15, 15:20 UTC | 20m |
| 2026-05-14 | PBD592 | - | May 14, 02:30 UTC | May 14, 02:50 UTC | 20m |
| 2026-05-12 | PBD836 | - | May 12, 10:50 UTC | May 12, 23:55 UTC | 13h 5m |
| 2026-05-12 | PBD835 | VKO → VKO | May 12, 08:15 UTC | May 12, 10:00 UTC | 1h 45m |
| 2026-05-11 | PBD835 | VKO → VKO | May 11, 10:25 UTC | May 12, 10:00 UTC | 23h 36m |
| 2026-05-11 | PBD979 | - | May 11, 08:40 UTC | May 11, 09:05 UTC | 25m |
| 2026-05-10 | PBD1476 | GSV → GSV | May 10, 18:55 UTC | May 10, 19:24 UTC | 30m |
| 2026-05-10 | PBD836 | - | May 10, 11:40 UTC | May 10, 12:40 UTC | 1h 0m |
| 2026-05-10 | PBD836 | - | May 10, 10:55 UTC | May 10, 11:05 UTC | 10m |
| 2026-05-10 | PBD835 | VKO → VKO | May 10, 09:40 UTC | May 10, 10:00 UTC | 20m |
| 2026-05-09 | PBD996 | IST → IST | May 9, 14:20 UTC | May 10, 09:00 UTC | 18h 40m |
| 2026-05-09 | PBD996 | IST → IST | May 9, 13:30 UTC | May 10, 09:00 UTC | 19h 30m |
| 2026-05-07 | PBD770 | - | May 7, 16:40 UTC | May 7, 16:50 UTC | 10m |
| 2026-05-06 | PBD577 | - | May 6, 15:55 UTC | May 6, 17:00 UTC | 1h 5m |
| 2026-05-06 | PBD519 | LED → LED | May 6, 08:01 UTC | May 6, 09:05 UTC | 1h 5m |
| 2026-05-03 | PBD6502 | - | May 3, 02:20 UTC | May 3, 02:55 UTC | 35m |
| 2026-05-02 | PBD6833 | SVO → SVO | May 2, 18:40 UTC | May 2, 19:05 UTC | 25m |
| 2026-05-02 | PBD6864 | GSV → GSV | May 2, 13:45 UTC | May 2, 13:55 UTC | 10m |
| 2026-05-02 | PBD330 | GSV → GSV | May 2, 06:35 UTC | May 2, 06:40 UTC | 5m |
| 2026-04-30 | PBD941 | IST → IST | Apr 30, 23:55 UTC | May 1, 15:45 UTC | 15h 50m |
| 2026-04-26 | PBD6542 | - | Apr 26, 13:05 UTC | Apr 27, 02:20 UTC | 13h 15m |
| 2026-04-26 | PBD6921 | SVO → SVO | Apr 26, 04:40 UTC | Apr 26, 05:10 UTC | 30m |
| 2026-04-24 | PBD502 | - | Apr 24, 21:20 UTC | Apr 25, 04:00 UTC | 6h 40m |
| 2026-04-24 | PBD6925 | SVO → SVO | Apr 24, 16:00 UTC | Apr 24, 16:30 UTC | 30m |
| 2026-04-23 | PBD6927 | SVO → SVO | Apr 23, 06:35 UTC | Apr 23, 07:05 UTC | 30m |
| 2026-04-21 | PBD6915 | SVO → SVO | Apr 21, 12:20 UTC | Apr 21, 12:45 UTC | 25m |
| 2026-04-15 | PBD6963 | SVO → SVO | Apr 15, 17:05 UTC | Apr 15, 17:20 UTC | 15m |
| 2026-04-15 | PBD6901 | SVO → SVO | Apr 15, 05:35 UTC | Apr 15, 06:05 UTC | 30m |
| 2026-04-14 | PBD361 | - | Apr 14, 09:20 UTC | Apr 14, 09:30 UTC | 10m |
| 2026-04-13 | PBD6548 | - | Apr 13, 01:50 UTC | Apr 13, 02:30 UTC | 40m |
| 2026-04-12 | PBD6547 | SVO → SVO | Apr 12, 20:05 UTC | Apr 12, 20:15 UTC | 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-73297 page for operator, model, and routing details .