sensors Mode-S transponder
151EDD
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73437 · AIRBUS A-321
- Hex
- 151EDD
- Octal
- 05217335
- Decimal
- 1,384,157
- Country
- RU
- Tail
- RA-73437
- Type
- A321
- Flights observed
- 110
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 151EDD 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
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | SBI5210 | BQS → OVB | May 29, 17:55 UTC | May 30, 03:35 UTC | 9h 40m |
| 2026-05-29 | SBI2507 | DME → OVB | May 29, 11:00 UTC | May 29, 11:25 UTC | 25m |
| 2026-05-29 | SBI2506 | OVB → DME | May 29, 08:25 UTC | May 29, 08:35 UTC | 10m |
| 2026-05-29 | SBI2506 | OVB → DME | May 29, 07:00 UTC | May 29, 07:40 UTC | 40m |
| 2026-05-28 | SBI2513 | DME → OVB | May 28, 08:50 UTC | May 28, 23:40 UTC | 14h 50m |
| 2026-05-28 | SBI2513 | DME → OVB | May 28, 03:20 UTC | May 28, 23:40 UTC | 20h 20m |
| 2026-05-26 | SBI2513 | DME → OVB | May 26, 21:09 UTC | May 27, 09:00 UTC | 11h 50m |
| 2026-05-26 | SBI2513 | DME → OVB | May 26, 08:34 UTC | May 27, 04:09 UTC | 19h 35m |
| 2026-05-26 | SBI2504 | OVB → DME | May 26, 01:44 UTC | May 26, 23:25 UTC | 21h 40m |
| 2026-05-25 | SBI2504 | OVB → DME | May 25, 21:30 UTC | May 26, 21:14 UTC | 23h 45m |
| 2026-05-25 | SBI2504 | OVB → DME | May 25, 20:30 UTC | May 26, 08:59 UTC | 12h 30m |
| 2026-05-25 | SBI2504 | OVB → DME | May 25, 05:15 UTC | May 25, 05:25 UTC | 10m |
| 2026-05-24 | SBI3235 | DME → ASB | May 24, 08:25 UTC | May 24, 23:35 UTC | 15h 10m |
| 2026-05-23 | SBI5008 | LED → OVB | May 23, 17:30 UTC | May 23, 19:35 UTC | 2h 5m |
| 2026-05-23 | SBI5007 | OVB → LED | May 23, 01:55 UTC | May 23, 14:35 UTC | 12h 39m |
| 2026-05-22 | SBI5007 | OVB → LED | May 22, 12:30 UTC | May 22, 19:45 UTC | 7h 15m |
| 2026-05-21 | SBI2502 | OVB → DME | May 21, 13:05 UTC | May 22, 06:45 UTC | 17h 40m |
| 2026-05-20 | SBI5210 | BQS → OVB | May 20, 12:20 UTC | May 21, 03:45 UTC | 15h 25m |
| 2026-05-20 | SBI5210 | BQS → OVB | May 20, 07:25 UTC | May 21, 03:45 UTC | 20h 20m |
| 2026-05-20 | SBI2506 | OVB → DME | May 20, 05:20 UTC | May 21, 03:45 UTC | 22h 25m |
| 2026-05-19 | SBI5210 | BQS → OVB | May 19, 18:05 UTC | May 20, 03:25 UTC | 9h 20m |
| 2026-05-19 | SBI5210 | BQS → OVB | May 19, 06:05 UTC | May 20, 03:25 UTC | 21h 20m |
| 2026-05-18 | SBI5209 | OVB → BQS | May 18, 19:45 UTC | May 19, 18:25 UTC | 22h 40m |
| 2026-05-18 | SBI5007 | OVB → LED | May 18, 13:10 UTC | May 19, 06:15 UTC | 17h 4m |
| 2026-05-18 | SBI2519 | DME → OVB | May 18, 05:45 UTC | May 18, 20:00 UTC | 14h 14m |
| 2026-05-17 | SBI5007 | OVB → LED | May 17, 11:50 UTC | May 17, 20:50 UTC | 9h 0m |
| 2026-05-16 | SBI5546 | OSS → OVB | May 16, 13:35 UTC | May 17, 12:01 UTC | 22h 25m |
| 2026-05-15 | SBI2513 | DME → OVB | May 15, 21:05 UTC | May 16, 14:01 UTC | 16h 56m |
| 2026-05-15 | SBI2513 | DME → OVB | May 15, 15:40 UTC | May 16, 14:01 UTC | 22h 21m |
| 2026-05-15 | SBI3236 | ASB → DME | May 15, 14:20 UTC | May 16, 09:10 UTC | 18h 50m |
| 2026-05-15 | SBI3236 | ASB → DME | May 15, 03:50 UTC | May 15, 22:00 UTC | 18h 9m |
| 2026-05-14 | SBI2513 | DME → OVB | May 14, 20:25 UTC | May 14, 21:40 UTC | 1h 15m |
| 2026-05-14 | SBI3235 | DME → ASB | May 14, 08:35 UTC | May 14, 15:10 UTC | 6h 35m |
| 2026-05-14 | SBI2504 | OVB → DME | May 14, 05:25 UTC | May 14, 05:45 UTC | 20m |
| 2026-05-13 | SBI2506 | OVB → DME | May 13, 03:10 UTC | May 13, 17:45 UTC | 14h 35m |
| 2026-05-12 | SBI2506 | OVB → DME | May 12, 18:00 UTC | May 13, 17:15 UTC | 23h 15m |
| 2026-05-12 | SBI2506 | OVB → DME | May 12, 13:30 UTC | May 13, 12:35 UTC | 23h 5m |
| 2026-05-12 | SBI5546 | OSS → OVB | May 12, 08:40 UTC | May 13, 03:25 UTC | 18h 45m |
| 2026-05-10 | SBI5005 | OVB → LED | May 10, 09:40 UTC | May 11, 01:45 UTC | 16h 5m |
| 2026-05-10 | SBI5005 | OVB → LED | May 10, 03:20 UTC | May 11, 01:45 UTC | 22h 25m |
| 2026-05-10 | SBI5005 | OVB → LED | May 10, 03:04 UTC | May 11, 01:15 UTC | 22h 10m |
| 2026-05-09 | SBI5005 | OVB → LED | May 9, 18:15 UTC | May 10, 10:24 UTC | 16h 10m |
| 2026-05-09 | SBI5005 | OVB → LED | May 9, 12:05 UTC | May 10, 10:24 UTC | 22h 20m |
| 2026-05-09 | SBI5210 | BQS → OVB | May 9, 07:20 UTC | May 10, 03:40 UTC | 20h 20m |
| 2026-05-08 | SBI5210 | BQS → OVB | May 8, 02:44 UTC | May 8, 13:25 UTC | 10h 40m |
| 2026-05-07 | SBI5209 | OVB → BQS | May 7, 17:55 UTC | May 7, 18:20 UTC | 25m |
| 2026-05-07 | SB2507 | - | May 7, 12:20 UTC | May 7, 12:40 UTC | 20m |
| 2026-05-07 | SBI2506 | OVB → DME | May 7, 09:10 UTC | May 7, 09:35 UTC | 25m |
| 2026-05-06 | SBI5209 | OVB → BQS | May 6, 17:50 UTC | May 7, 03:15 UTC | 9h 25m |
| 2026-05-06 | SBI5368 | RGK → OVB | May 6, 05:40 UTC | May 6, 12:50 UTC | 7h 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-73437 page for operator, model, and routing details .