In this case, immediately contact ATC and alert them to the existence of the eruption
Precipitation static is caused by aircraft in flight coming in contact with uncharged particles. These particles can be rain, snow, fog, sleet, hail, volcanic ash, dust; any solid or liquid particles.
NTSB Identification: The National Transportation Safety Board determines the probable cause (s) of this accident to be: Inadvertent encounter with volcanic ash cloud, which resulted in damage from foreign material (foreign object) and subsequent compressor stalling of all engines.