Yokosuka K5Y. Called Cureng or Churen by Indonesians. The name Cureng or Churen comes from the abbreviation of its function chuukan-renshuuki, namely intermediate level training aircraft (chu-ren). Cureng became an icon of Indonesia's physical struggle against the Dutch in the 1945-1950 period.

Former Japanese 'Willows' TJ-72 and TJ-54 of the fledgling Indonesian air force at Yogyakarta's airfield, then called Magoewo (Maguwo). Aircraft type misidentified as Nakajima A4N in Dutch archive. Photo from: Nederlands Instituut voor Militaire Historie

A rare K5Y 'Willow', one of a number of leftover Japanese aircraft used by the fledgling Indonesian air force. The Indonesians called the type Cureng, or Tjoereng in a Dutch-influenced spelling, hence the serial. Apparently it's a word of Japanese origin meaning 'intermediate trainer'.