Pilot reported diverting due to severe icing and aircraft unable to climb out of icing conditions.

Attributes
ACN	1729890
Time
Date	202002
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	PA-46 Malibu/Malibu Mirage/Malibu Matrix
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Private Flight Crew Instrument
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 850 Flight Crew Type 700
Events
Anomaly	Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence

Narrative:

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.

Original NASA ASRS Text

Title: Pilot reported diverting due to severe icing and aircraft unable to climb out of icing conditions.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.