sensors Mode-S transponder
151EC4
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73412 · BOEING 737-800
- Hex
- 151EC4
- Octal
- 05217304
- Decimal
- 1,384,132
- Country
- RU
- Tail
- RA-73412
- Type
- B738
- Flights observed
- 119
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 21h ago
Last known position
Country allocation
The ICAO 24-bit address 151EC4 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 | SBI6327 | IKT → OSS | May 29, 06:30 UTC | May 29, 07:45 UTC | 1h 15m |
| 2026-05-28 | SBI6327 | IKT → OSS | May 28, 11:50 UTC | May 29, 07:45 UTC | 19h 55m |
| 2026-05-27 | SBI6419 | IKT → UFA | May 27, 20:50 UTC | May 28, 12:30 UTC | 15h 40m |
| 2026-05-27 | SBI6419 | IKT → UFA | May 27, 15:55 UTC | May 28, 12:30 UTC | 20h 35m |
| 2026-05-27 | SBI6419 | IKT → UFA | May 27, 10:10 UTC | May 28, 06:20 UTC | 20h 10m |
| 2026-05-27 | SBI6415 | IKT → SVX | May 27, 04:39 UTC | May 27, 21:10 UTC | 16h 31m |
| 2026-05-26 | SBI6415 | IKT → SVX | May 26, 22:15 UTC | May 27, 21:00 UTC | 22h 45m |
| 2026-05-25 | SBI5066 | KGD → OVB | May 25, 02:15 UTC | May 25, 11:55 UTC | 9h 40m |
| 2026-05-24 | SBI5066 | KGD → OVB | May 24, 11:15 UTC | May 25, 08:40 UTC | 21h 25m |
| 2026-05-23 | SBI5240 | IKT → OVB | May 23, 14:50 UTC | May 24, 01:15 UTC | 10h 26m |
| 2026-05-22 | SBI5257 | OVB → UUS | May 22, 16:35 UTC | May 23, 04:10 UTC | 11h 34m |
| 2026-05-22 | SBI5541 | OVB → FRU | May 22, 08:20 UTC | May 22, 12:45 UTC | 4h 25m |
| 2026-05-21 | SBI5542 | FRU → OVB | May 21, 12:20 UTC | May 22, 08:50 UTC | 20h 30m |
| 2026-05-21 | SBI5542 | FRU → OVB | May 21, 08:35 UTC | May 21, 12:50 UTC | 4h 15m |
| 2026-05-20 | SBI5542 | FRU → OVB | May 20, 15:20 UTC | May 21, 12:50 UTC | 21h 30m |
| 2026-05-20 | SBI5541 | OVB → FRU | May 20, 08:20 UTC | May 20, 15:45 UTC | 7h 25m |
| 2026-05-20 | SBI5250 | PKC → OVB | May 20, 05:30 UTC | May 20, 06:05 UTC | 35m |
| 2026-05-19 | SBI5103 | OVB → AER | May 19, 07:35 UTC | May 20, 06:05 UTC | 22h 31m |
| 2026-05-18 | SBI5103 | OVB → AER | May 18, 17:20 UTC | May 19, 08:20 UTC | 14h 59m |
| 2026-05-18 | SBI5728 | XIY → OVB | May 18, 03:05 UTC | May 19, 02:55 UTC | 23h 49m |
| 2026-05-18 | SBI5232 | IKT → OVB | May 18, 02:40 UTC | May 18, 17:40 UTC | 15h 0m |
| 2026-05-17 | SBI6416 | SVX → IKT | May 17, 11:50 UTC | May 18, 03:05 UTC | 15h 15m |
| 2026-05-17 | SBI6415 | IKT → SVX | May 17, 06:10 UTC | May 18, 03:05 UTC | 20h 55m |
| 2026-05-16 | SBI6420 | UFA → IKT | May 16, 12:01 UTC | May 17, 06:55 UTC | 18h 54m |
| 2026-05-16 | SBI6419 | IKT → UFA | May 16, 05:25 UTC | May 16, 12:40 UTC | 7h 16m |
| 2026-05-15 | SBI6419 | IKT → UFA | May 15, 13:05 UTC | May 16, 12:40 UTC | 23h 35m |
| 2026-05-15 | SBI6328 | OSS → IKT | May 15, 12:00 UTC | May 16, 06:10 UTC | 18h 10m |
| 2026-05-15 | SBI6328 | OSS → IKT | May 15, 07:20 UTC | May 16, 06:10 UTC | 22h 50m |
| 2026-05-15 | SBI6328 | OSS → IKT | May 15, 06:20 UTC | May 15, 13:20 UTC | 7h 0m |
| 2026-05-14 | SBI6419 | IKT → UFA | May 14, 05:40 UTC | May 14, 06:10 UTC | 30m |
| 2026-05-14 | SBI6419 | IKT → UFA | May 14, 04:10 UTC | May 14, 04:20 UTC | 10m |
| 2026-05-13 | SBI6311 | IKT → PKX | May 13, 17:55 UTC | May 14, 00:15 UTC | 6h 20m |
| 2026-05-13 | SBI6328 | OSS → IKT | May 13, 06:20 UTC | May 13, 12:55 UTC | 6h 35m |
| 2026-05-13 | SBI6320 | CAN → IKT | May 13, 02:15 UTC | May 13, 02:30 UTC | 15m |
| 2026-05-11 | SBI6403 | IKT → VVO | May 11, 16:45 UTC | May 11, 17:00 UTC | 16m |
| 2026-05-10 | SBI6419 | IKT → UFA | May 10, 11:45 UTC | May 11, 06:30 UTC | 18h 45m |
| 2026-05-10 | SBI6419 | IKT → UFA | May 10, 07:04 UTC | May 11, 06:30 UTC | 23h 25m |
| 2026-05-10 | SBI6415 | IKT → SVX | May 10, 06:25 UTC | May 10, 12:30 UTC | 6h 5m |
| 2026-05-09 | SBI6420 | UFA → IKT | May 9, 05:45 UTC | May 9, 23:20 UTC | 17h 35m |
| 2026-05-08 | SBI6327 | IKT → OSS | May 8, 07:04 UTC | May 9, 02:15 UTC | 19h 10m |
| 2026-05-08 | SBI6327 | IKT → OSS | May 8, 06:09 UTC | May 9, 02:15 UTC | 20h 5m |
| 2026-05-07 | SBI6419 | IKT → UFA | May 7, 05:25 UTC | May 7, 15:10 UTC | 9h 45m |
| 2026-05-07 | SBI6419 | IKT → UFA | May 7, 04:00 UTC | May 7, 04:15 UTC | 15m |
| 2026-05-07 | SBI5255 | OVB → UUD | May 7, 00:30 UTC | May 7, 01:00 UTC | 30m |
| 2026-05-05 | SBI5208 | VVO → OVB | May 5, 18:20 UTC | May 6, 11:25 UTC | 17h 5m |
| 2026-05-05 | SBI6262 | BKK → VVO | May 5, 13:20 UTC | May 6, 11:25 UTC | 22h 5m |
| 2026-05-04 | SBI6261 | VVO → BKK | May 4, 19:10 UTC | May 5, 11:35 UTC | 16h 25m |
| 2026-05-03 | SBI6245 | VVO → PVG | May 3, 20:45 UTC | May 4, 02:30 UTC | 5h 45m |
| 2026-05-02 | SBI5203 | OVB → VVO | May 2, 16:20 UTC | May 2, 16:50 UTC | 30m |
| 2026-05-02 | SBI5565 | OVB → TAS | May 2, 07:30 UTC | May 2, 13:15 UTC | 5h 45m |
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-73412 page for operator, model, and routing details .