sensors Mode-S transponder
0AC31C
ICAO 24-bit transponder address · allocated to Costa Rica
Currently assigned to HK-5068 · DASSAULT Falcon 2000
- Hex
- 0AC31C
- Octal
- 02541434
- Decimal
- 705,308
- Country
- CR
- Tail
- HK-5068
- Type
- F2TH
- Flights observed
- 38
- Distinct callsigns
- 3
- Country
- CR
- Last broadcast
- 21d ago
Last known position
Country allocation
The ICAO 24-bit address 0AC31C falls within the block assigned to Costa Rica (CR) by ICAO Annex 10, Volume III. Every aircraft registered in Costa Rica 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 3 distinct
Recent flights last 38
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-28 | HTS68 | - | Jun 28, 20:50 UTC | Jun 28, 21:24 UTC | 35m |
| 2026-06-28 | HTS68 | - | Jun 28, 19:04 UTC | Jun 28, 19:40 UTC | 35m |
| 2026-06-18 | HTS068 | - | Jun 18, 22:00 UTC | Jun 18, 22:10 UTC | 10m |
| 2026-06-17 | HK5068 | - | Jun 17, 17:15 UTC | Jun 17, 17:25 UTC | 10m |
| 2026-06-14 | HTS68 | - | Jun 14, 23:05 UTC | Jun 15, 03:10 UTC | 4h 4m |
| 2026-06-10 | HK5068 | - | Jun 10, 20:20 UTC | Jun 10, 22:00 UTC | 1h 40m |
| 2026-06-10 | HK5068 | - | Jun 10, 13:15 UTC | Jun 10, 19:25 UTC | 6h 10m |
| 2026-06-06 | HTS68 | - | Jun 6, 20:19 UTC | Jun 6, 20:55 UTC | 35m |
| 2026-06-06 | HTS68 | - | Jun 6, 15:10 UTC | Jun 6, 16:34 UTC | 1h 25m |
| 2026-06-05 | HTS68 | - | Jun 5, 16:40 UTC | Jun 5, 18:10 UTC | 1h 30m |
| 2026-06-05 | HTS68 | - | Jun 5, 12:40 UTC | Jun 5, 15:25 UTC | 2h 45m |
| 2026-06-02 | HTS68 | - | Jun 2, 14:45 UTC | Jun 2, 18:10 UTC | 3h 25m |
| 2026-06-02 | HTS68 | - | Jun 2, 01:15 UTC | Jun 2, 02:50 UTC | 1h 35m |
| 2026-06-01 | HTS68 | - | Jun 1, 22:50 UTC | Jun 1, 23:35 UTC | 45m |
| 2026-05-31 | HK5068 | - | May 31, 14:45 UTC | May 31, 14:55 UTC | 10m |
| 2026-05-31 | HK5068 | - | May 31, 12:50 UTC | May 31, 13:00 UTC | 10m |
| 2026-05-25 | HK5068 | - | May 25, 03:35 UTC | May 25, 03:50 UTC | 15m |
| 2026-05-19 | HK5068 | - | May 19, 17:55 UTC | May 19, 18:05 UTC | 10m |
| 2026-05-18 | HK5068 | - | May 18, 19:05 UTC | May 19, 18:05 UTC | 23h 0m |
| 2026-05-18 | HK5068 | - | May 18, 18:45 UTC | May 18, 20:35 UTC | 1h 50m |
| 2026-05-17 | HK5068 | - | May 17, 19:25 UTC | May 17, 19:40 UTC | 15m |
| 2026-05-15 | HK5068 | - | May 15, 20:30 UTC | May 15, 22:50 UTC | 2h 20m |
| 2026-05-14 | HK5068 | - | May 14, 14:01 UTC | May 14, 14:50 UTC | 50m |
| 2026-05-12 | HK5068 | - | May 12, 22:15 UTC | May 12, 23:01 UTC | 45m |
| 2026-05-12 | HK5068 | - | May 12, 03:40 UTC | May 12, 04:40 UTC | 1h 0m |
| 2026-04-27 | HK5068 | - | Apr 27, 20:35 UTC | Apr 27, 21:10 UTC | 35m |
| 2026-04-26 | HK5068 | - | Apr 26, 21:05 UTC | Apr 27, 21:00 UTC | 23h 55m |
| 2026-04-26 | HK5068 | - | Apr 26, 20:40 UTC | Apr 26, 21:10 UTC | 30m |
| 2026-04-24 | HK5068 | - | Apr 24, 23:45 UTC | Apr 25, 00:05 UTC | 20m |
| 2026-04-23 | HK5068 | - | Apr 23, 12:01 UTC | Apr 23, 12:15 UTC | 15m |
| 2026-04-22 | HK5068 | - | Apr 22, 18:40 UTC | Apr 22, 19:00 UTC | 20m |
| 2026-04-22 | HK5068 | - | Apr 22, 13:25 UTC | Apr 22, 13:40 UTC | 15m |
| 2026-04-20 | HK5068 | - | Apr 20, 19:50 UTC | Apr 20, 20:10 UTC | 20m |
| 2026-04-20 | HK5068 | - | Apr 20, 16:45 UTC | Apr 20, 17:00 UTC | 15m |
| 2026-04-19 | HK5068 | - | Apr 19, 22:10 UTC | Apr 20, 04:25 UTC | 6h 15m |
| 2026-04-16 | HK5068 | - | Apr 16, 12:34 UTC | Apr 16, 12:49 UTC | 15m |
| 2026-04-15 | HK5068 | - | Apr 15, 19:05 UTC | Apr 15, 20:00 UTC | 55m |
| 2026-04-15 | HK5068 | - | Apr 15, 17:45 UTC | Apr 15, 19:00 UTC | 1h 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 HK-5068 page for operator, model, and routing details .