The pilot, who held a Class Four Instrument Rating, had planned the flight as currency training. At Narrogin, he set the aircraft up on a long final approach but reported that on several occasions during the approach he found that the aircraft became low and he needed to adjust the flight path. About midway along final, the pilot stated that he felt a thump on the left side of the aircraft but the aircraft continued to operate normally, so he continued with the approach and landing. After parking the aircraft the damage to the left wing was noticed. The pilot had a total of 15 hours night flying experience and this was the first time since obtaining his Class Four Instrument Rating, some 12 months previously, that he had landed an aircraft at night at any location other than Jandakot. The pilot stated that he had developed the habit of carrying out a flat approach to ensure he made good his nominated touchdown point. He believes he carried out the same procedure on this occasion. The tree struck by the aircraft was 15 metres high and situated about 500 metres before the strip threshold, it was below the required approach gradient.
