What happened
While traveling from Majura, Australian Capital Territory, to Tumut, New South Wales, a group of five helicopters encountered deteriorating weather. While four of the aircraft chose to land at Wee Jasper, the pilot of VH-PRW, a Bell Helicopter 206L-4, continued south into the Brindabella Ranges. Due to worsening visibility and low cloud, the pilot performed an interim landing near Long Plain Road.
After waiting for approximately three and a half hours, the pilot decided to resume the flight at 1129. The aircraft flew at a very low altitude for roughly 26 minutes before climbing to approximately 7,000 ft AMSL. At 1525, the helicopter began a rapid climb of 1,800 ft per minute, followed immediately by a steep, descending left turn. This maneuver led to a collision with terrain, resulting in one fatality.
The investigation
Investigators examined the wreckage and the site, finding no mechanical defects or evidence of pilot incapacitation. The investigation focused on the decision to fly in conditions unsuitable for visual flight rules (VFR). Although the pilot had previously landed due to poor weather, the pilot elected to depart despite a cloud base of less than 144 ft, which prevented the maintenance of required visibility and altitude clearances.
Meteorological data confirmed that significant cloud cover existed from the ground up to 10,000 ft along the flight path. The investigation noted that the aircraft's flight path showed altitude and tracking variations, suggesting attempts to maneuver around weather. Because the pilot did not hold an instrument rating and the aircraft was certified for day VFR only, the loss of visual cues likely led to spatial disorientation.