Learjet 60
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor
Flight Crew Last 90 Days 120; Flight Crew Total 4200; Flight Crew Type 800
Other / Unknown
Deviation - Altitude Excursion From Assigned Altitude; Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Weather / Turbulence
Flight Crew Regained Aircraft Control; General Maintenance Action
Human Factors; Weather
North of CHS we encountered severe-extreme turbulence at an altitude of FL400. We accumulated rime ice and we had a total altitude loss of 2;500-2;700 feet until we fully recovered the aircraft from the turbulent weather and landed. Crew and passengers were ok and the aircraft went under inspection to make sure everything is ok.
LR60 First Officer reports encountering severe turbulence at FL400 which resulted in an altitude loss of over 2;500 FT before control is regained.