The pilot of a cessna 172 was unable to maintain altitude due to icing conditions.

Attributes
ACN	1247324
Time
Date	201503
Local Time Of Day	1201-1800
Place
Locale Reference	LWT.Airport
State Reference	MT
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 70 Flight Crew Total 19000 Flight Crew Type 500
Events
Anomaly	Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter Weather / Turbulence

Narrative:

During an IFR descent I was unable to maintain assigned MEA due to airframe icing.

Original NASA ASRS Text

Title: The pilot of a Cessna 172 was unable to maintain altitude due to icing conditions.

Narrative: During an IFR Descent I was unable to maintain assigned MEA due to airframe icing.

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.