The aircraft involved Cause_to_be_included , a Xian MA60 , was operating Being_in_operation Merpati Nusantara Airlines ' scheduled domestic service from Sorong to Kaimana , both in West Papua .

It crashed Catastrophe into the sea in heavy rain , while on approach Arriving to Kaimana , about before the runway .

Kaimana Airport has no published Publishing instrument approach procedure and all operations must be conducted Action visually .