Helicopters. A special exception may be granted for helicopter operations for construction and survey work, where no other practical method is available to do the work, and for special events such as the visit of a dignitary, recreational events such as ski, tennis, equine or golf events, or some other events of a short-term nature. No approval for a special exception shall be granted unless the ZBA makes a finding that the helicopter use will not constitute a nuisance or hazard to Town residents and their property.