'Ghost Piper' keeping people awake
Residents living in a zone from Frauenfeld in Thurgau to Rapperswil in Sankt Gallen are being kept awake by night flights of a twin engine Piper aircraft.
The press has dubbed the plane the ‘Ghost Piper’.
But there’s no secret. The plane is being used by the Federal Office of Topography to laser scan the mountains and valleys.
The office says the information gathered will help to determine possible avalanche and landslide dangers as well as being used to measure annoying aircraft noise – ironically.
The night flights are necessary as some of the routes are used by commercial aircraft during the day.