Captain reported wing anti ice failure in cruise; requiring a descent to exit icing conditions.

Attributes
ACN	1739629
Time
Date	202004
Local Time Of Day	0601-1200
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Aerofoil Ice System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence

Narrative:

Flight ZZZ-ZZZ1 wing a/I fail warning message in moderate ice. [Advised ATC] descended to 9000 ft. To exit ice conditions.

Original NASA ASRS Text

Title: Captain reported wing anti ice failure in cruise; requiring a descent to exit icing conditions.

Narrative: Flight ZZZ-ZZZ1 wing A/I fail warning message in moderate ice. [Advised ATC] descended to 9000 ft. to exit ICE conditions.

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.