DC-4 VH-EDA "Pacific Trader" suffered a nose-wheel collapse at Port Moresby on 6 February 1969. The aircraft was returning a group of 60 children from Nauru to boarding schools in Australia when hydraulic failure on approach to Port Moresby necessitated an emergency landing when the nose-wheel could not be fully lowered.

There is a photo of the incident located at the link below.

-- http://giaman.com/s/vheda