What happened
On March 9, 2016, at approximately 1800 UTC, a Learjet 60 XR, registration A6RJE, was operating a flight from King Khalid International Airport (OERK) in Riyadh, Saudi Arabia, to Doha International Airport (OTBD) in Qatar.
While the aircraft was in cruise flight at flight level 190, the crew selected the thermal wing anti-icing system to the