sensors Mode-S transponder
151FC4
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73668 · BOEING 737-800
- Hex
- 151FC4
- Octal
- 05217704
- Decimal
- 1,384,388
- Country
- RU
- Tail
- RA-73668
- Type
- B738
- Flights observed
- 75
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 151FC4 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 |
|---|---|---|---|---|---|
| 2026-06-01 | SBI5207 | OVB → VVO | Jun 1, 19:00 UTC | Jun 1, 19:35 UTC | 35m |
| 2026-06-01 | SBI5863 | OVB → AYT | Jun 1, 09:20 UTC | Jun 1, 10:00 UTC | 40m |
| 2026-05-30 | SBI5203 | OVB → VVO | May 30, 16:25 UTC | May 30, 17:00 UTC | 35m |
| 2026-05-30 | SBI5565 | OVB → TAS | May 30, 07:30 UTC | May 30, 13:25 UTC | 5h 55m |
| 2026-05-29 | SBI5204 | VVO → OVB | May 29, 16:20 UTC | May 30, 04:35 UTC | 12h 15m |
| 2026-05-29 | SBI5103 | OVB → AER | May 29, 08:55 UTC | May 29, 09:10 UTC | 15m |
| 2026-05-28 | SBI5103 | OVB → AER | May 28, 11:05 UTC | May 29, 09:10 UTC | 22h 5m |
| 2026-05-28 | SBI5890 | IST → OVB | May 28, 10:50 UTC | May 29, 09:00 UTC | 22h 10m |
| 2026-05-28 | SBI5889 | OVB → IST | May 28, 08:55 UTC | May 28, 09:15 UTC | 20m |
| 2026-05-27 | SBI5240 | IKT → OVB | May 27, 14:50 UTC | May 28, 01:25 UTC | 10h 35m |
| 2026-05-26 | SBI6306 | BKK → IKT | May 26, 09:09 UTC | May 27, 03:34 UTC | 18h 25m |
| 2026-05-25 | SBI6305 | IKT → BKK | May 25, 15:35 UTC | May 26, 07:40 UTC | 16h 5m |
| 2026-05-24 | SBI6410 | LED → IKT | May 24, 09:55 UTC | May 24, 11:15 UTC | 1h 20m |
| 2026-05-24 | SBI6409 | IKT → LED | May 24, 05:55 UTC | May 24, 07:30 UTC | 1h 35m |
| 2026-05-22 | SBI6327 | IKT → OSS | May 22, 06:35 UTC | May 22, 13:10 UTC | 6h 35m |
| 2026-05-21 | SBI6327 | IKT → OSS | May 21, 13:40 UTC | May 22, 13:00 UTC | 23h 20m |
| 2026-05-21 | SBI6327 | IKT → OSS | May 21, 11:05 UTC | May 22, 07:55 UTC | 20h 50m |
| 2026-05-21 | SBI6327 | IKT → OSS | May 21, 10:40 UTC | May 22, 07:55 UTC | 21h 15m |
| 2026-05-21 | SBI6410 | LED → IKT | May 21, 07:05 UTC | May 22, 07:00 UTC | 23h 55m |
| 2026-05-20 | SBI6409 | IKT → LED | May 20, 20:45 UTC | May 21, 13:45 UTC | 17h 0m |
| 2026-05-20 | SBI6409 | IKT → LED | May 20, 15:50 UTC | May 21, 11:05 UTC | 19h 15m |
| 2026-05-20 | SBI6409 | IKT → LED | May 20, 10:05 UTC | May 21, 07:15 UTC | 21h 10m |
| 2026-05-20 | SBI6415 | IKT → SVX | May 20, 04:25 UTC | May 20, 21:10 UTC | 16h 46m |
| 2026-05-19 | SBI6415 | IKT → SVX | May 19, 22:10 UTC | May 20, 21:00 UTC | 22h 51m |
| 2026-05-19 | SBI6415 | IKT → SVX | May 19, 15:05 UTC | May 20, 10:40 UTC | 19h 36m |
| 2026-05-19 | SBI5106 | AER → OVB | May 19, 14:40 UTC | May 20, 10:40 UTC | 20h 1m |
| 2026-05-18 | SBI5105 | OVB → AER | May 18, 17:05 UTC | May 19, 11:50 UTC | 18h 44m |
| 2026-05-18 | SBI5105 | OVB → AER | May 18, 16:30 UTC | May 19, 11:50 UTC | 19h 19m |
| 2026-05-18 | SBI2510 | OVB → DME | May 18, 12:20 UTC | May 18, 12:45 UTC | 25m |
| 2026-05-15 | SBI5864 | AYT → OVB | May 15, 13:05 UTC | May 16, 07:11 UTC | 18h 5m |
| 2026-05-15 | SBI5864 | AYT → OVB | May 15, 11:10 UTC | May 16, 07:11 UTC | 20h 0m |
| 2026-05-15 | SBI5863 | OVB → AYT | May 15, 09:20 UTC | May 15, 09:40 UTC | 20m |
| 2026-05-14 | SBI5863 | OVB → AYT | May 14, 18:05 UTC | May 15, 08:30 UTC | 14h 25m |
| 2026-05-14 | SBI5208 | VVO → OVB | May 14, 07:15 UTC | May 15, 07:00 UTC | 23h 45m |
| 2026-05-13 | SBI5105 | OVB → AER | May 13, 10:35 UTC | May 13, 12:15 UTC | 1h 40m |
| 2026-05-12 | SBI5726 | PKX → OVB | May 12, 15:10 UTC | May 13, 04:50 UTC | 13h 40m |
| 2026-05-11 | SBI6410 | LED → IKT | May 11, 14:45 UTC | May 11, 14:55 UTC | 10m |
| 2026-05-11 | SBI6410 | LED → IKT | May 11, 05:40 UTC | May 11, 13:35 UTC | 7h 55m |
| 2026-05-10 | SBI6402 | BTK → KJA | May 10, 17:10 UTC | May 10, 23:50 UTC | 6h 40m |
| 2026-05-09 | SBI6320 | CAN → IKT | May 9, 15:45 UTC | May 10, 02:39 UTC | 10h 55m |
| 2026-05-08 | SBI6312 | PKX → IKT | May 8, 22:00 UTC | May 9, 00:35 UTC | 2h 35m |
| 2026-05-08 | SBI6311 | IKT → PKX | May 8, 19:40 UTC | May 8, 19:50 UTC | 10m |
| 2026-05-08 | SBI6311 | IKT → PKX | May 8, 17:50 UTC | May 8, 18:05 UTC | 15m |
| 2026-05-08 | SBI6410 | LED → IKT | May 8, 14:55 UTC | May 8, 15:05 UTC | 10m |
| 2026-05-08 | SBI6410 | LED → IKT | May 8, 11:09 UTC | May 8, 13:40 UTC | 2h 30m |
| 2026-05-08 | SBI6410 | LED → IKT | May 8, 09:59 UTC | May 8, 10:14 UTC | 15m |
| 2026-05-08 | SBI6409 | IKT → LED | May 8, 03:35 UTC | May 8, 07:34 UTC | 4h 0m |
| 2026-05-07 | SBI5229 | OVB → IKT | May 7, 22:00 UTC | May 7, 22:25 UTC | 25m |
| 2026-05-06 | SBI5890 | IST → OVB | May 6, 12:05 UTC | May 7, 02:45 UTC | 14h 39m |
| 2026-05-06 | SBI5889 | OVB → IST | May 6, 07:45 UTC | May 6, 08:25 UTC | 40m |
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-73668 page for operator, model, and routing details .