Mastertech Airline (Udon Thani International (UTH)) is a new start-up planning to operate domestic regional flights in Thailand from the northwestern city of Udon Thani International (UTH). It has acquired a Piper PA-31 Navajo and plans to initially serve Phitsanulok (PHS) and Ubon Ratchathani (UBP) with the 10-seat turboprop. It hopes to be able to eventually add larger turboprop aircraft for leisure oriented flights to Hua Hin (HHQ) and Utapao International (UTP) as well as international destinations.