Zest Air (Z2, Manila) is to cancel four of its domestic routes served from its Manila base. According to a report by Airline Route, Busuanga, Marinduque, Masbate and Tablas will be dropped effective May 11 likely as a knock-on effect from the Filipino airline's decision to retire its three-strong Yunshuji Y-7 turboprop fleet. The low-cost carrier will continue to operate domestic and international routes with its fleet of one A319-100 and ten A320-200s.