BATH BEACH - A ballfield in one Brooklyn park served as a runway Tuesday for a small aircraft that made an emergency landing.The Cessna landed on the Offerman Park ballfield near the Belt Parkway and Cropsey Avenue around 10:30 a.m. Police say the pilot requested an emergency landing after reporting engine trouble. No one was injured in the emergency landing and officials are investigating the incident. Related Information Small aircraft makes emergency landing on Brooklyn ballfield