As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TOOK OFF FROM 6,000 FEET, LAKE TAHOE AIRPORT. UNABLE TO PRESSURIZE AIRCRAFT, WENT TO EMERGENCY MODE. AIRCRAFT FILLED WITH BLUE SMOKE. SHUT OFF EMER AIR. FOUND SQUAT SWITCH MISRIGGED OR MALFUNCTIONED. THE 600 DEGREE BLEED AIR NOW BLOWS ON 400 DEGREE DUCTS. (X)