Narrative:

Started engine; aircraft started moving; brakes were not effective as well as no directional control. Shut down engine; still no brakes as well as no directional control; impacted hangar. Afterwards; I found there to be a layer of ice underneath the snow; as well as all this happening in a matter of a few seconds.

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Original NASA ASRS Text

Title: Pilot of a single engine turboprop aircraft reported starting up the engine and losing brake control due to slippery; icy ramp conditions resulting in impacting a hangar.

Narrative: Started engine; aircraft started moving; brakes were not effective as well as no directional control. Shut down engine; still no brakes as well as no directional control; impacted hangar. Afterwards; I found there to be a layer of ice underneath the snow; as well as all this happening in a matter of a few seconds.

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.