What happened
The flight commenced with standard procedures, including an IFR clearance for a noise abatement departure toward the Talla VOR. During the climb, the pilot was initially cleared to FL 140 and subsequently re-cleared to FL 200. At 16:21 hrs, the pilot of N64719, an unspecified aircraft type, requested a higher altitude to avoid icing conditions. While the pilot was eventually cleared to climb to FL 205, radar data indicated that the aircraft's airspeed and rate of climb became unstable for approximately six minutes.
Around 16:30 hrs, the air traffic controller observed the aircraft in a turn and inquired about potential difficulties. The pilot confirmed an emergency but was unable to provide immediate details, repeatedly asking the controller to wait. During this period, the aircraft was observed descending rapidly in a right-hand turn toward high terrain. At 16:33 hrs, the pilot reported an inability to maintain altitude and requested assistance in finding a landing site. After being provided with headings toward Perth, the pilot indicated they were breaking out of the clouds but stated that while power had been restored, they had no control of the aircraft. The final radar contact occurred at 3,150 feet over Drummond Hill, near Fortingall.
Findings
- The aircraft experienced erratic airspeed and climb rates while attempting to climb through icing conditions.
- The pilot reported a total loss of flight control during the descent.