Tags: Aircraft.
The I.S.T. XL-15 Tagak (Swan in English) was a single engine twin boom high wing monoplane designed after the I.S.T. XL-14 Maya and built in the Philippines in the mid-1950s. The result of a collaboration between a Government research institute and the Philippine Air Force it was designed as a utility liaison or ambulance aircraft and as a test bed for the use of local materials in aviation.