As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT 251GL - 07/21/2008 - FLIGHT 5133 - PILOTS REPORTED THAT UPON DEPARTURE FROM LBL TO DEN THE AUTOFEATHER ACTIVATED IN FLIGHT AS POWER WAS BEING INCREASED. MAINTENANCE PERFORMED OPERATIONAL CHECKS ON AUTOFEATHER SYSTEM IAW BEECH 1900D MM 61-21 WITH NO DEFECTS NOTED. MAINTENANCE COULD NOT DUPLICATE THE DISCREPANCY. OPERATIONAL CHECKS GOOD. (S)