SAR Staff, Hasty Team, SVU, and WCSAR were requested to assist Sierra County and numerous other agencies in searching for a missing airplane that disappeared on a flight from Truckee, CA, to Petaluma, CA on Monday, 4/17 with two occupants on board. This was the fifth day of the search. Ground teams searched multiple areas, centered around Webber Lake, but due to dense tree cover and deep snow, nothing was located.