sentences:  Another pro-active measure the Government took to aid BCal's and Gatwick's development at the time was to grant permission for Airlink, a high-frequency helicopter shuttle service linking both of London's main airports.The new helicopter shuttle service linking London Heathrow and London Gatwick was inaugurated on 9 June 1978.This service was operating 10 times a day in each direction using a 28-seater Sikorsky S-61N helicopter, which was owned by the BAA.