Passignano sul Trasimeno

Passignano sul Trasimeno is a comune (municipality) in the Province of Perugia in the Italian region Umbria, located about 20 km northwest of Perugia.

Passignano was home to a historic Italian airplane factory, the SAI Ambrosini, now abandoned as an industrial center, but still used as association center. Its buildings still exist near the Passignano sul Trasimeno railway station.

Aircraft were tested at Eleuteri airport, only few kilometers away from this factory. SAI was involved mainly with Macchi during World War II. Eleuteri was also used as test center for the Ambrosini SS.4.