sensors Mode-S transponder
151FD9
ICAO 24-bit transponder address · allocated to Russia
Currently assigned to RA-73689 · AIRBUS A-321
- Hex
- 151FD9
- Octal
- 05217731
- Decimal
- 1,384,409
- Country
- RU
- Tail
- RA-73689
- Type
- A321
- Flights observed
- 104
- Distinct callsigns
- 20
- Country
- RU
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 151FD9 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 | SBI5004 | LED → OVB | May 29, 10:55 UTC | May 29, 11:20 UTC | 25m |
| 2026-05-29 | SBI5003 | OVB → LED | May 29, 07:20 UTC | May 29, 07:45 UTC | 25m |
| 2026-05-28 | SBI5724 | PKX → OVB | May 28, 22:30 UTC | May 29, 02:30 UTC | 4h 0m |
| 2026-05-28 | SBI5723 | OVB → PKX | May 28, 20:00 UTC | May 28, 20:10 UTC | 10m |
| 2026-05-28 | SBI5723 | OVB → PKX | May 28, 16:50 UTC | May 28, 17:25 UTC | 35m |
| 2026-05-27 | SBI5003 | OVB → LED | May 27, 07:25 UTC | May 27, 08:00 UTC | 35m |
| 2026-05-26 | SBI5261 | OVB → YKS | May 26, 17:09 UTC | May 27, 01:34 UTC | 8h 25m |
| 2026-05-26 | SBI5569 | OVB → SKD | May 26, 07:15 UTC | May 26, 13:29 UTC | 6h 15m |
| 2026-05-25 | SBI5262 | YKS → OVB | May 25, 17:35 UTC | May 26, 01:49 UTC | 8h 15m |
| 2026-05-24 | SBI5003 | OVB → LED | May 24, 05:15 UTC | May 24, 14:50 UTC | 9h 35m |
| 2026-05-23 | SBI5261 | OVB → YKS | May 23, 17:05 UTC | May 24, 01:45 UTC | 8h 41m |
| 2026-05-23 | SBI5003 | OVB → LED | May 23, 05:30 UTC | May 23, 08:25 UTC | 2h 55m |
| 2026-05-22 | SBI5223 | OVB → HTA | May 22, 19:00 UTC | May 23, 01:35 UTC | 6h 35m |
| 2026-05-21 | SBI5262 | YKS → OVB | May 21, 17:15 UTC | May 22, 01:35 UTC | 8h 20m |
| 2026-05-21 | SBI5556 | LBD → OVB | May 21, 12:50 UTC | May 21, 13:10 UTC | 20m |
| 2026-05-20 | SBI5262 | YKS → OVB | May 20, 07:55 UTC | May 21, 01:40 UTC | 17h 45m |
| 2026-05-19 | SBI5724 | PKX → OVB | May 19, 22:40 UTC | May 20, 02:30 UTC | 3h 50m |
| 2026-05-19 | SBI5723 | OVB → PKX | May 19, 20:20 UTC | May 19, 20:35 UTC | 15m |
| 2026-05-19 | SBI5723 | OVB → PKX | May 19, 16:55 UTC | May 19, 17:30 UTC | 35m |
| 2026-05-19 | SBI5556 | LBD → OVB | May 19, 07:25 UTC | May 19, 12:55 UTC | 5h 30m |
| 2026-05-18 | SBI5261 | OVB → YKS | May 18, 17:25 UTC | May 19, 02:05 UTC | 8h 39m |
| 2026-05-18 | SBI5224 | HTA → OVB | May 18, 01:15 UTC | May 18, 17:55 UTC | 16h 40m |
| 2026-05-17 | SBI5224 | HTA → OVB | May 17, 19:15 UTC | May 18, 17:55 UTC | 22h 40m |
| 2026-05-16 | SBI5261 | OVB → YKS | May 16, 17:15 UTC | May 17, 01:40 UTC | 8h 25m |
| 2026-05-15 | SBI5262 | YKS → OVB | May 15, 08:00 UTC | May 16, 02:10 UTC | 18h 9m |
| 2026-05-14 | SBI5724 | PKX → OVB | May 14, 17:10 UTC | May 15, 02:55 UTC | 9h 45m |
| 2026-05-13 | SBI5127 | OVB → MRV | May 13, 17:10 UTC | May 14, 12:05 UTC | 18h 55m |
| 2026-05-13 | SBI5262 | YKS → OVB | May 13, 01:15 UTC | May 13, 14:10 UTC | 12h 55m |
| 2026-05-12 | SBI5262 | YKS → OVB | May 12, 17:15 UTC | May 13, 14:10 UTC | 20h 55m |
| 2026-05-12 | SBI5004 | LED → OVB | May 12, 05:15 UTC | May 12, 14:35 UTC | 9h 20m |
| 2026-05-11 | SBI5723 | OVB → PKX | May 11, 16:50 UTC | May 11, 17:20 UTC | 31m |
| 2026-05-11 | SBI5003 | OVB → LED | May 11, 07:45 UTC | May 11, 08:25 UTC | 40m |
| 2026-05-10 | SBI5262 | YKS → OVB | May 10, 17:05 UTC | May 11, 02:00 UTC | 8h 55m |
| 2026-05-10 | SBI5127 | OVB → MRV | May 10, 08:20 UTC | May 10, 12:10 UTC | 3h 50m |
| 2026-05-09 | SBI5724 | PKX → OVB | May 9, 22:30 UTC | May 10, 02:39 UTC | 4h 10m |
| 2026-05-09 | SBI5723 | OVB → PKX | May 9, 20:05 UTC | May 9, 20:15 UTC | 10m |
| 2026-05-09 | SBI5723 | OVB → PKX | May 9, 16:50 UTC | May 9, 17:25 UTC | 35m |
| 2026-05-09 | SBI5551 | OVB → DYU | May 9, 06:45 UTC | May 9, 13:40 UTC | 6h 55m |
| 2026-05-08 | SBI5551 | OVB → DYU | May 8, 13:30 UTC | May 9, 07:15 UTC | 17h 45m |
| 2026-05-08 | SBI5551 | OVB → DYU | May 8, 08:44 UTC | May 9, 07:15 UTC | 22h 30m |
| 2026-05-07 | SBI5545 | OVB → OSS | May 7, 12:40 UTC | May 8, 09:09 UTC | 20h 30m |
| 2026-05-07 | SBI5541 | OVB → FRU | May 7, 08:50 UTC | May 7, 13:00 UTC | 4h 10m |
| 2026-05-06 | SBI5237 | OVB → KHV | May 6, 17:00 UTC | May 7, 13:00 UTC | 20h 0m |
| 2026-05-05 | SBI5724 | PKX → OVB | May 5, 23:00 UTC | May 6, 03:15 UTC | 4h 15m |
| 2026-05-05 | SBI5723 | OVB → PKX | May 5, 20:30 UTC | May 5, 20:45 UTC | 15m |
| 2026-05-05 | SBI5723 | OVB → PKX | May 5, 17:30 UTC | May 5, 18:00 UTC | 30m |
| 2026-05-04 | SBI5262 | YKS → OVB | May 4, 17:55 UTC | May 5, 02:15 UTC | 8h 21m |
| 2026-05-04 | SBI5128 | MRV → OVB | May 4, 11:00 UTC | May 4, 11:15 UTC | 15m |
| 2026-05-03 | SBI5262 | YKS → OVB | May 3, 18:20 UTC | May 4, 02:39 UTC | 8h 20m |
| 2026-05-02 | SBI5724 | PKX → OVB | May 2, 22:20 UTC | May 3, 02:35 UTC | 4h 15m |
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-73689 page for operator, model, and routing details .