On 27 May 2017, a Let 410 attempting to complete a visual approach to Lukla in rapidly deteriorating visibility descended below threshold altitude and impacted terrain close to the runway after stalling when attempting to climb in landing configuration. The aircraft was destroyed by the impact and two of the three occupants fatally injured. The Investigation concluded that the Captain had lost situational awareness at a critical time and had been slow to respond to the First Officers alert that the aircraft was too low. Safety Recommendations included the establishment of an independent and permanent Air Accident Investigation Agency.