sensors Mode-S transponder
151ECF
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73423 · AIRBUS A-320
- Hex
- 151ECF
- Octal
- 05217317
- Decimal
- 1,384,143
- Country
- RU
- Tail
- RA-73423
- Type
- A320
- Flights observed
- 199
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- Jul 26, 17:25 UTC
Last known position
Country allocation
The ICAO 24-bit address 151ECF 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 |
|---|---|---|---|
| SBI2582 | S7 Airlines (Siberia Airlines) | 20 | 2026-07-23 |
| SBI3022 | S7 Airlines (Siberia Airlines) | 12 | 2026-07-23 |
| SBI3018 | - | 12 | 2026-07-18 |
| SBI3034 | - | 11 | 2026-07-14 |
| SBI3021 | - | 8 | 2026-07-22 |
| SBI2572 | S7 Airlines (Siberia Airlines) | 8 | 2026-06-06 |
| SBI1214 | - | 7 | 2026-07-26 |
| SBI3042 | - | 6 | 2026-07-05 |
| SBI3031 | - | 6 | 2026-07-15 |
| SBI1213 | - | 6 | 2026-07-18 |
| SBI3032 | - | 5 | 2026-07-15 |
| SBI2630 | S7 Airlines (Siberia Airlines) | 5 | 2026-07-26 |
| SBI2629 | S7 Airlines (Siberia Airlines) | 5 | 2026-05-27 |
| SBI2605 | S7 Airlines (Siberia Airlines) | 5 | 2026-07-24 |
| SBI2571 | S7 Airlines (Siberia Airlines) | 5 | 2026-04-15 |
| SBI5303 | - | 4 | 2026-07-08 |
| SBI2625 | S7 Airlines (Siberia Airlines) | 4 | 2026-06-06 |
| SBI2606 | S7 Airlines (Siberia Airlines) | 4 | 2026-07-25 |
| SBI2594 | S7 Airlines (Siberia Airlines) | 4 | 2026-07-21 |
| SBI1004 | S7 Airlines (Siberia Airlines) | 4 | 2026-07-26 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | SBI1214 | - | Jul 26, 15:35 UTC | Jul 26, 17:25 UTC | 1h 50m |
| 2026-07-26 | SBI1004 | LED → DME | Jul 26, 09:05 UTC | Jul 26, 13:50 UTC | 4h 45m |
| 2026-07-26 | SBI1003 | DME → LED | Jul 26, 07:25 UTC | Jul 26, 07:40 UTC | 15m |
| 2026-07-26 | SBI2630 | RGK → DME | Jul 26, 05:10 UTC | Jul 26, 05:30 UTC | 20m |
| 2026-07-25 | SBI2630 | RGK → DME | Jul 25, 21:10 UTC | Jul 26, 04:35 UTC | 7h 25m |
| 2026-07-25 | SBI2606 | KEJ → DME | Jul 25, 03:55 UTC | Jul 25, 11:25 UTC | 7h 30m |
| 2026-07-24 | SBI2605 | DME → KEJ | Jul 24, 16:10 UTC | Jul 25, 02:35 UTC | 10h 25m |
| 2026-07-23 | SBI2582 | NSK → DME | Jul 23, 22:40 UTC | Jul 24, 05:25 UTC | 6h 45m |
| 2026-07-23 | SBI2582 | NSK → DME | Jul 23, 08:00 UTC | Jul 24, 05:25 UTC | 21h 25m |
| 2026-07-23 | SBI3022 | IKT → DME | Jul 23, 04:45 UTC | Jul 24, 03:45 UTC | 23h 0m |
| 2026-07-22 | SBI3022 | IKT → DME | Jul 22, 13:50 UTC | Jul 23, 08:05 UTC | 18h 15m |
| 2026-07-22 | SBI3022 | IKT → DME | Jul 22, 13:20 UTC | Jul 23, 08:05 UTC | 18h 45m |
| 2026-07-22 | SBI3021 | - | Jul 22, 11:15 UTC | Jul 23, 08:05 UTC | 20h 50m |
| 2026-07-21 | SBI1007 | DME → LED | Jul 21, 16:05 UTC | Jul 21, 16:30 UTC | 25m |
| 2026-07-21 | SBI2594 | ABA → DME | Jul 21, 00:45 UTC | Jul 21, 04:10 UTC | 3h 25m |
| 2026-07-20 | SBI2593 | - | Jul 20, 05:35 UTC | Jul 20, 23:05 UTC | 17h 30m |
| 2026-07-18 | SBI1213 | - | Jul 18, 21:30 UTC | Jul 19, 13:55 UTC | 16h 25m |
| 2026-07-18 | SBI3018 | - | Jul 18, 03:00 UTC | Jul 18, 21:40 UTC | 18h 40m |
| 2026-07-17 | SBI3018 | - | Jul 17, 22:05 UTC | Jul 18, 21:40 UTC | 23h 36m |
| 2026-07-17 | SBI2582 | - | Jul 17, 03:59 UTC | Jul 18, 03:30 UTC | 23h 31m |
| 2026-07-16 | SBI2582 | - | Jul 16, 10:15 UTC | Jul 17, 05:30 UTC | 19h 15m |
| 2026-07-16 | SBI2582 | - | Jul 16, 05:50 UTC | Jul 17, 05:30 UTC | 23h 40m |
| 2026-07-15 | SBI3032 | - | Jul 15, 19:15 UTC | Jul 16, 10:29 UTC | 15h 15m |
| 2026-07-15 | SBI3031 | - | Jul 15, 18:05 UTC | Jul 15, 18:20 UTC | 15m |
| 2026-07-15 | SBI2582 | - | Jul 15, 03:35 UTC | Jul 15, 05:05 UTC | 1h 30m |
| 2026-07-14 | SBI3034 | - | Jul 14, 04:05 UTC | Jul 15, 03:45 UTC | 23h 39m |
| 2026-07-13 | SBI3034 | - | Jul 13, 22:55 UTC | Jul 14, 04:55 UTC | 6h 0m |
| 2026-07-13 | SBI3022 | - | Jul 13, 04:50 UTC | Jul 13, 23:35 UTC | 18h 45m |
| 2026-07-12 | SBI3021 | - | Jul 12, 13:25 UTC | Jul 13, 05:31 UTC | 16h 5m |
| 2026-07-11 | SBI3031 | - | Jul 11, 18:10 UTC | Jul 12, 03:20 UTC | 9h 10m |
| 2026-07-10 | SBI2514 | OVB → DME | Jul 10, 17:20 UTC | Jul 10, 17:40 UTC | 20m |
| 2026-07-08 | SBI5303 | - | Jul 8, 22:00 UTC | Jul 9, 03:35 UTC | 5h 35m |
| 2026-07-08 | SBI1073 | DME → KUF | Jul 8, 12:40 UTC | Jul 8, 12:50 UTC | 10m |
| 2026-07-06 | SBI3040 | - | Jul 6, 22:35 UTC | Jul 7, 16:35 UTC | 18h 0m |
| 2026-07-05 | SBI3021 | - | Jul 5, 13:20 UTC | Jul 6, 05:25 UTC | 16h 5m |
| 2026-07-05 | SBI3042 | - | Jul 5, 08:10 UTC | Jul 5, 08:20 UTC | 10m |
| 2026-07-03 | SBI3022 | - | Jul 3, 13:20 UTC | Jul 4, 05:25 UTC | 16h 5m |
| 2026-07-03 | SBI2582 | - | Jul 3, 05:50 UTC | Jul 4, 05:25 UTC | 23h 35m |
| 2026-07-03 | SBI2582 | - | Jul 3, 05:20 UTC | Jul 3, 13:55 UTC | 8h 35m |
| 2026-07-01 | SBI2630 | - | Jul 1, 21:50 UTC | Jul 2, 03:30 UTC | 5h 40m |
| 2026-06-29 | SBI3040 | - | Jun 29, 22:44 UTC | Jun 30, 04:40 UTC | 5h 56m |
| 2026-06-28 | SBI3031 | - | Jun 28, 21:24 UTC | Jun 28, 22:04 UTC | 40m |
| 2026-06-28 | SBI3031 | - | Jun 28, 03:35 UTC | Jun 28, 22:04 UTC | 18h 30m |
| 2026-06-27 | SBI3031 | - | Jun 27, 23:50 UTC | Jun 28, 22:04 UTC | 22h 15m |
| 2026-06-27 | SBI3042 | - | Jun 27, 07:30 UTC | Jun 28, 03:40 UTC | 20h 10m |
| 2026-06-25 | SBI1006 | LED → DME | Jun 25, 16:29 UTC | Jun 26, 06:39 UTC | 14h 10m |
| 2026-06-25 | SBI1005 | - | Jun 25, 14:55 UTC | Jun 25, 15:15 UTC | 20m |
| 2026-06-25 | SBI3034 | - | Jun 25, 01:09 UTC | Jun 25, 09:29 UTC | 8h 20m |
| 2026-06-24 | SBI2582 | - | Jun 24, 03:50 UTC | Jun 25, 01:40 UTC | 21h 50m |
| 2026-06-24 | SBI2582 | - | Jun 24, 03:44 UTC | Jun 25, 01:40 UTC | 21h 55m |
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-73423 page for operator, model, and routing details .