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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
- 9 Nov 2026, 19:58
- Logged visits
- 1,225
The station's story
- Cumulative contact time
- 404 h
- Distinct days
- 750
- Highest captured altitude
- 45,000 ft
- 1 corrupted frame(s) excluded from this maximum
- Discovery rank
- #38,109 of 60,659
- Longest contact
- 2 h 1 min
Observed callsigns
FSE (776 contacts, 2020-2024) · TSW (288 contacts, 2025-2026)
Operator as per the registry of 9 Nov 2026; observed callsigns are the freshest measurement.
Visits
| Callsign | Route | First contact | Last contact | Altitude at end of contact | Positions |
|---|---|---|---|---|---|
| TSW4W | route not resolved | 8 Mar 2026, 19:578 Mar 2026 | 8 Mar 2026, 20:13 | 18,650 ft | 215 |
| TSW4W | route not resolved | 8 Mar 2026, 16:418 Mar 2026 | 8 Mar 2026, 16:49 | 29,000 ft | 48 |
| TSW4W | route not resolved | 6 Mar 2026, 20:336 Mar 2026 | 6 Mar 2026, 20:51 | 20,025 ft | 139 |
| TSW4W | route not resolved | 6 Mar 2026, 18:506 Mar 2026 | 6 Mar 2026, 18:54 | 29,000 ft | 11 |
| TSW4W | route not resolved | 26 Feb 2026, 18:3126 Feb 2026 | 26 Feb 2026, 19:03 | 32,300 ft | 1,131 |
| TSW4W | route not resolved | 24 Feb 2026, 19:5224 Feb 2026 | 24 Feb 2026, 20:24 | 32,025 ft | 2,052 |
| TSW4W | route not resolved | 23 Feb 2026, 15:3923 Feb 2026 | 23 Feb 2026, 16:16 | 22,675 ft | 1,989 |
| 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 |
