Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 25; Flight Crew Total 850; Flight Crew Type 700
Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Provided Assistance; Flight Crew Took Evasive Action; Flight Crew Landed in Emergency Condition; Flight Crew Diverted
Weather; Procedure
Direct flight from ZZZ to ZZZ1 at 10;000 ft. Icing was projected from freezing level to 14;000 ft.; however headwinds were very strong so the plan was to fly at 10;000 ft. until visible moisture was encountered and then climb above the clouds. Immediately upon noticing frost forming; requested [a] climb to 14;000 ft. Within minutes ice buildup was so severe that even at full throttle [the] aircraft was unable to climb. Requested diversion to closest airport; ZZZ2; as the ice buildup was continuing and loss of control would have been imminent. Due to low ceiling and severe ice buildup making very shallow turns and several approaches were required to finally make a successful landing.
Pilot reported diverting due to severe icing and aircraft unable to climb out of icing conditions.