Accident
On December 15, 1964, at Bern-Belpmoos airfield, a Piper Cub J3C (registration HB-ALP) was involved in a ground collision. The aircraft was being moved from its parking position by a student pilot. Due to a lack of sufficient attention, the student pilot allowed the Piper Cub to roll into a Bell 47-G helicopter (registration HB-XAV) that was parked in front of it.
Damage
Both aircraft sustained serious damage as a result of the collision. The Piper Cub HB-ALP suffered damage estimated at approximately 30% of its value, while the Bell 47-G HB-XAV sustained damage estimated at about 20% of its value.
Probable Cause
The Swiss accident investigation commission determined that the probable cause of the accident was the student pilot's lack of sufficient attention while taxiing from the parking position.