Flight and Weather Conditions
While en route, the pilot encountered hazy weather after crossing the Continental Divide. Near Montrose, Colorado, he deviated approximately 50 miles north to avoid adverse weather conditions. Unable to proceed through the area, he returned to Montrose to skirt the southern edge of the weather. Near Dove Creek, the pilot reported that a storm moved in and the weather started looking bad.
Encounter with Severe Turbulence
The pilot initiated a climb from 8,500 feet mean sea level (MSL) to 12,500 feet MSL, attempting to get out of the area when severe turbulence was encountered. He stated that while climbing through 11,500 feet at 110 knots, "all hell broke loose." According to the pilot, the turbulence flipped the aircraft inverted and forced it into a cloud bank. The aircraft was carried down and up several times, losing and gaining about 2,000 feet each time. Subsequently, the pilot recovered at approximately 10,550 feet, and after about another 30 seconds in the turbulence, he proceeded to his destination.
Aftermath and Findings
After landing, several "ripples" were found in the wing skin. Later, a more thorough examination revealed extensive internal damage to the aircraft.