June 21, Yakima, Wash. / Beech Bonanza

At approximately 1300 Pacific time, a Beech G-35 suffered apparent flutter damage while descending into McAllister Field. The pilot and passenger were uninjured. The pilot said he was cruising at about 150 mph when he experienced light to moderate turbulence. He initiated a 1000 fpm descent about 15 nautical miles northwest of McAllister Field, holding an indicated airspeed of 170 to 180 mph. During the descent, the pilot noted an airframe vibration. Post-flight inspection revealed wrinkling of the aircrafts aft-bulkhead.