The Hawker Beechcraft 390S Premier 1 was on final approach to the airport in Subang, Malaysia, when it suddenly descended into terrain, killing the eight people aboard the aircraft and two people on the ground. The Air Accident Investigation Bureau (AAIB) of Malaysia determined that the accident likely occurred when the pilot lost control of the aircraft after the copilot inadvertently extended the lift dumpers (ground spoilers) while conducting the Before Landing checklist.
Accident Investigation, In-depth Feature, loss of control
Sudden Loss of Lift
Inadvertent extension of the ground spoilers likely triggered the crash of a Premier 1 in Malaysia.