sensors Mode-S transponder
461A76
ICAO 24-bit transponder address · allocated to Finland
- Hex
- 461A76
- Octal
- 21415166
- Decimal
- 4,594,294
- Country
- FI
- Flights observed
- 50
- Distinct callsigns
- 2
- Country
- FI
- Last broadcast
- 5m ago
Current position
Country allocation
The ICAO 24-bit address 461A76 falls within the block assigned to Finland (FI) by ICAO Annex 10, Volume III. Every aircraft registered in Finland 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 2 distinct
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | OHKAO | - | Jul 14, 06:50 UTC | Jul 14, 07:30 UTC | 40m |
| 2026-07-14 | OHKAO | - | Jul 14, 04:40 UTC | Jul 14, 05:20 UTC | 40m |
| 2026-07-09 | OHKAO | BMA → TMP | Jul 9, 12:45 UTC | Jul 9, 14:25 UTC | 1h 40m |
| 2026-07-09 | OHKAO | TMP → BMA | Jul 9, 07:35 UTC | Jul 9, 08:50 UTC | 1h 15m |
| 2026-07-07 | APM6A | - | Jul 7, 12:45 UTC | Jul 7, 15:55 UTC | 3h 10m |
| 2026-07-06 | APM6A | - | Jul 6, 09:40 UTC | Jul 6, 13:00 UTC | 3h 20m |
| 2026-07-02 | OHKAO | - | Jul 2, 11:35 UTC | Jul 2, 11:50 UTC | 15m |
| 2026-07-02 | OHKAO | - | Jul 2, 10:20 UTC | Jul 2, 10:55 UTC | 35m |
| 2026-06-27 | OHKAO | KDL → TMP | Jun 27, 14:09 UTC | Jun 27, 15:55 UTC | 1h 45m |
| 2026-06-27 | OHKAO | - | Jun 27, 11:25 UTC | Jun 27, 12:19 UTC | 55m |
| 2026-06-27 | OHKAO | - | Jun 27, 10:25 UTC | Jun 27, 10:50 UTC | 25m |
| 2026-06-26 | OHKAO | - | Jun 26, 11:24 UTC | Jun 26, 11:49 UTC | 25m |
| 2026-06-26 | OHKAO | - | Jun 26, 09:20 UTC | Jun 26, 10:44 UTC | 1h 25m |
| 2026-06-26 | OHKAO | - | Jun 26, 08:00 UTC | Jun 26, 08:30 UTC | 30m |
| 2026-06-26 | OHKAO | - | Jun 26, 03:54 UTC | Jun 26, 05:44 UTC | 1h 50m |
| 2026-06-22 | OHKAO | - | Jun 22, 18:04 UTC | Jun 22, 18:40 UTC | 35m |
| 2026-06-22 | OHKAO | - | Jun 22, 16:24 UTC | Jun 22, 17:25 UTC | 1h 0m |
| 2026-06-18 | OHKAO | - | Jun 18, 06:15 UTC | Jun 18, 08:15 UTC | 2h 0m |
| 2026-06-17 | OHKAO | - | Jun 17, 16:30 UTC | Jun 17, 17:00 UTC | 30m |
| 2026-06-10 | OHKAO | - | Jun 10, 12:35 UTC | Jun 10, 16:25 UTC | 3h 50m |
| 2026-06-10 | OHKAO | - | Jun 10, 08:10 UTC | Jun 10, 11:00 UTC | 2h 50m |
| 2026-06-09 | OHKAO | - | Jun 9, 13:00 UTC | Jun 9, 14:10 UTC | 1h 10m |
| 2026-06-09 | OHKAO | - | Jun 9, 08:20 UTC | Jun 9, 09:30 UTC | 1h 10m |
| 2026-06-08 | OHKAO | - | Jun 8, 11:15 UTC | Jun 8, 15:15 UTC | 4h 0m |
| 2026-06-08 | OHKAO | - | Jun 8, 07:05 UTC | Jun 8, 09:55 UTC | 2h 50m |
| 2026-06-01 | OHKAO | HEL → TMP | Jun 1, 16:55 UTC | Jun 1, 17:50 UTC | 55m |
| 2026-06-01 | OHKAO | - | Jun 1, 15:30 UTC | Jun 1, 16:10 UTC | 40m |
| 2026-06-01 | OHKAO | - | Jun 1, 14:15 UTC | Jun 1, 14:45 UTC | 30m |
| 2026-05-19 | OHKAO | - | May 19, 12:00 UTC | May 19, 12:55 UTC | 55m |
| 2026-05-19 | OHKAO | - | May 19, 08:05 UTC | May 19, 09:25 UTC | 1h 20m |
| 2026-05-19 | OHKAO | - | May 19, 06:25 UTC | May 19, 06:40 UTC | 15m |
| 2026-05-13 | OHKAO | - | May 13, 12:50 UTC | May 13, 13:20 UTC | 30m |
| 2026-05-13 | OHKAO | - | May 13, 11:05 UTC | May 13, 12:05 UTC | 1h 0m |
| 2026-05-12 | OHKAO | - | May 12, 11:35 UTC | May 12, 12:10 UTC | 35m |
| 2026-05-12 | OHKAO | - | May 12, 09:35 UTC | May 12, 10:40 UTC | 1h 5m |
| 2026-05-12 | OHKAO | - | May 12, 05:25 UTC | May 12, 06:30 UTC | 1h 5m |
| 2026-05-12 | OHKAO | - | May 12, 03:55 UTC | May 12, 04:40 UTC | 45m |
| 2026-05-03 | OHKAO | - | May 3, 13:25 UTC | May 3, 14:40 UTC | 1h 15m |
| 2026-05-03 | OHKAO | - | May 3, 09:30 UTC | May 3, 10:35 UTC | 1h 5m |
| 2026-04-14 | OHKAO | - | Apr 14, 14:50 UTC | Apr 14, 15:40 UTC | 50m |
| 2026-04-14 | OHKAO | - | Apr 14, 14:15 UTC | Apr 14, 14:45 UTC | 30m |
| 2026-04-14 | OHKAO | - | Apr 14, 11:30 UTC | Apr 14, 12:25 UTC | 55m |
| 2026-04-14 | OHKAO | - | Apr 14, 08:30 UTC | Apr 14, 09:05 UTC | 35m |
| 2026-04-13 | OHKAO | - | Apr 13, 18:30 UTC | Apr 13, 19:00 UTC | 30m |
| 2026-04-13 | OHKAO | - | Apr 13, 16:15 UTC | Apr 13, 18:00 UTC | 1h 45m |
| 2026-04-13 | OHKAO | - | Apr 13, 15:50 UTC | Apr 13, 18:00 UTC | 2h 10m |
| 2026-04-13 | OHKAO | - | Apr 13, 14:35 UTC | Apr 13, 16:15 UTC | 1h 40m |
| 2026-04-13 | OHKAO | - | Apr 13, 12:20 UTC | Apr 13, 13:55 UTC | 1h 35m |
| 2026-04-13 | OHKAO | - | Apr 13, 11:55 UTC | Apr 13, 13:55 UTC | 2h 0m |
| 2026-04-13 | OHKAO | - | Apr 13, 10:55 UTC | Apr 13, 12:15 UTC | 1h 20m |
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.