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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 57,441
- 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 | 29 Jan 2026, 16:3729 Jan 2026 | 29 Jan 2026, 16:51 | 29,000 ft | 457 |
| TSW4W | route not resolved | 29 Jan 2026, 09:3929 Jan 2026 | 29 Jan 2026, 10:00 | not transmitted | 872 |
| TSW4W | route not resolved | 27 Jan 2026, 13:5927 Jan 2026 | 27 Jan 2026, 14:15 | 14,700 ft | 1,181 |
| TSW4W | route not resolved | 26 Jan 2026, 09:2626 Jan 2026 | 26 Jan 2026, 09:43 | 24,000 ft | 1,140 |
| TSW4W | route not resolved | 23 Jan 2026, 10:4823 Jan 2026 | 23 Jan 2026, 11:08 | 13,000 ft | 1,210 |
| TSW4W | route not resolved | 21 Jan 2026, 18:0721 Jan 2026 | 21 Jan 2026, 18:15 | 40,000 ft | 310 |
| TSW4W | route not resolved | 21 Jan 2026, 13:0721 Jan 2026 | 21 Jan 2026, 13:08 | 27,775 ft | 3 |
| TSW4W | route not resolved | 20 Jan 2026, 13:3620 Jan 2026 | 20 Jan 2026, 13:58 | 36,000 ft | 1,608 |
| TSW4W | route not resolved | 17 Jan 2026, 10:1417 Jan 2026 | 17 Jan 2026, 10:15 | 6,725 ft | 1 |
| not transmitted | route not resolved | 25 Dec 2025, 16:2025 Dec 2025 | 25 Dec 2025, 16:20 | 9,000 ft | no position received |
| not transmitted | route not resolved | 18 Dec 2025, 20:0918 Dec 2025 | 18 Dec 2025, 20:09 | 15,725 ft | no position received |
| TSW4W | route not resolved | 11 Dec 2025, 17:2611 Dec 2025 | 11 Dec 2025, 17:37 | 19,000 ft | 63 |
| TSW4W | route not resolved | 11 Dec 2025, 16:2411 Dec 2025 | 11 Dec 2025, 16:47 | 7,425 ft | 244 |
| TSW4W | route not resolved | 11 Dec 2025, 08:5211 Dec 2025 | 11 Dec 2025, 09:09 | 36,700 ft | 310 |
| TSW4W | route not resolved | 10 Nov 2025, 20:2310 Nov 2025 | 10 Nov 2025, 20:47 | 15,000 ft | 1,174 |
| TSW4W | route not resolved | 10 Nov 2025, 19:3910 Nov 2025 | 10 Nov 2025, 19:56 | not transmitted | 1,015 |
| TSW4W | route not resolved | 9 Nov 2025, 11:579 Nov 2025 | 9 Nov 2025, 12:12 | 19,900 ft | 533 |
| TSW4W | route not resolved | 7 Nov 2025, 14:477 Nov 2025 | 7 Nov 2025, 15:28 | not transmitted | 2,283 |
| TSW4W | route not resolved | 6 Nov 2025, 17:126 Nov 2025 | 6 Nov 2025, 17:52 | 38,000 ft | 2,786 |
| TSW4W | route not resolved | 5 Nov 2025, 18:465 Nov 2025 | 5 Nov 2025, 19:02 | 15,700 ft | 944 |
| TSW4W | route not resolved | 3 Nov 2025, 14:023 Nov 2025 | 3 Nov 2025, 14:29 | 34,000 ft | 1,332 |
| TSW4W | route not resolved | 1 Nov 2025, 17:291 Nov 2025 | 1 Nov 2025, 17:43 | 8,000 ft | 1,261 |
| TSW4W | route not resolved | 1 Nov 2025, 16:061 Nov 2025 | 1 Nov 2025, 16:33 | not transmitted | 2,033 |
| TSW4W | route not resolved | 31 Oct 2025, 18:0331 Oct 2025 | 31 Oct 2025, 18:37 | 24,725 ft | 1,823 |
| TSW4W | route not resolved | 31 Oct 2025, 15:1331 Oct 2025 | 31 Oct 2025, 15:46 | 41,000 ft | 1,068 |
