The aircraft had made a number of flights spreading superphosphate in hilly country, partially covered by trees. After being loaded with a similar amount of material as previously carried, the aircraft took off and began a gradual climbing turn, downwind, towards the area to be treated. The pilot said the aircraft entered an area of sink and began to lose height. He increased power but failed to notice a large tree ahead of the aircraft until he had almost reached it. The pilot had insufficient distance to manouevre around the tree and elected to clear it by climbing. The aircraft struck the uppermost branches of the tree, at a low forward speed, before descending steeply and impacting heavily in a paddock. The aircraft skidded a short distance and caught fire. The pilot, who had been wearing a full safety harness, was able to escape through a side window.
