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Aircraft
HB-VTW
Common
- Mode S hex
- 4B3978
- Manufacturer
- Textron Aviation
- Serial number
- 525-1044
- Year built
- 20197 years old
- Operator
- Alpine Flightservice
- Country of registration
Switzerland- First contact
- 14 May 2020, 14:24
- Last contact
- 11 Aug 2026, 08:50
- Logged visits
- 1,164
The station's story
- Cumulative contact time
- 381 h
- Distinct days
- 710
- Highest captured altitude
- 45,000 ft
- 1 corrupted frame(s) excluded from this maximum
- Discovery rank
- #37,853 of 57,065
- Longest contact
- 2 h 1 min
Observed callsigns
FSE (776 contacts, 2020-2024) · TSW (232 contacts, 2025-2026)
Operator as per the registry of 29 Jul 2026; observed callsigns are the freshest measurement.
Visits
| Callsign | Route | First contact | Last contact | Altitude at end of contact | Positions |
|---|---|---|---|---|---|
| TSW4W | route not resolved | 14 Jun 2025, 09:2114 Jun 2025 | 14 Jun 2025, 09:34 | not transmitted | 76 |
| TSW4W | route not resolved | 11 Jun 2025, 14:0111 Jun 2025 | 11 Jun 2025, 14:22 | 26,475 ft | 700 |
| TSW4W | route not resolved | 11 Jun 2025, 08:4311 Jun 2025 | 11 Jun 2025, 09:11 | 40,000 ft | 1,233 |
| not transmitted | route not resolved | 10 Jun 2025, 08:5510 Jun 2025 | 10 Jun 2025, 09:01 | 27,550 ft | 5 |
| TSW4W | route not resolved | 9 Jun 2025, 14:129 Jun 2025 | 9 Jun 2025, 14:42 | 41,000 ft | 1,719 |
| TSW4W | route not resolved | 6 Jun 2025, 14:076 Jun 2025 | 6 Jun 2025, 14:44 | 34,750 ft | 1,201 |
| TSW4W | route not resolved | 5 Jun 2025, 18:405 Jun 2025 | 5 Jun 2025, 18:58 | 12,675 ft | 1,140 |
| TSW4W | route not resolved | 4 Jun 2025, 16:334 Jun 2025 | 4 Jun 2025, 16:39 | 39,000 ft | 91 |
| TSW4W | route not resolved | 4 Jun 2025, 14:264 Jun 2025 | 4 Jun 2025, 14:32 | 27,000 ft | no position received |
| not transmitted | route not resolved | 24 May 2025, 12:4724 May 2025 | 24 May 2025, 12:54 | 40,000 ft | no position received |
| TSW4W | route not resolved | 24 May 2025, 09:2224 May 2025 | 24 May 2025, 09:27 | 31,000 ft | 54 |
| TSW4W | route not resolved | 23 May 2025, 18:0023 May 2025 | 23 May 2025, 18:35 | 41,000 ft | 1,162 |
| TSW4W | route not resolved | 23 May 2025, 14:4523 May 2025 | 23 May 2025, 15:10 | 38,000 ft | 1,206 |
| TSW4W | route not resolved | 20 May 2025, 18:4720 May 2025 | 20 May 2025, 19:14 | 28,150 ft | 1,498 |
| TSW4W | route not resolved | 16 May 2025, 14:5516 May 2025 | 16 May 2025, 15:24 | 17,625 ft | 1,303 |
| TSW4W | route not resolved | 15 May 2025, 18:0015 May 2025 | 15 May 2025, 18:42 | 19,175 ft | 1,580 |
| TSW4W | route not resolved | 15 May 2025, 11:0215 May 2025 | 15 May 2025, 11:39 | 34,950 ft | 2,166 |
| TSW4W | route not resolved | 14 May 2025, 14:5014 May 2025 | 14 May 2025, 15:23 | 15,600 ft | 1,101 |
| TSW4W | route not resolved | 14 May 2025, 10:3014 May 2025 | 14 May 2025, 10:41 | 35,000 ft | 58 |
| TSW4W | route not resolved | 8 May 2025, 20:118 May 2025 | 8 May 2025, 20:28 | 20,375 ft | 323 |
| TSW4W | route not resolved | 8 May 2025, 16:388 May 2025 | 8 May 2025, 16:48 | 38,275 ft | 127 |
| TSW4W | route not resolved | 8 May 2025, 12:298 May 2025 | 8 May 2025, 12:47 | 12,950 ft | 1,050 |
| TSW4W | route not resolved | 7 May 2025, 14:187 May 2025 | 7 May 2025, 14:47 | 22,850 ft | 1,093 |
| TSW4W | route not resolved | 5 May 2025, 07:295 May 2025 | 5 May 2025, 07:48 | 24,000 ft | 937 |
| TSW4W | route not resolved | 4 May 2025, 17:034 May 2025 | 4 May 2025, 17:20 | not transmitted | 682 |
