As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE FAILED PART WAS DISCOVERED DURING THE OPERATIONAL TEST OF THE HYDRAULIC LOW LEVEL SENSOR. THIS TEST IS REQUIRED UNDER THE 100 HOUR INSPECTION PROGRAM. (ITEM 29-10/2) OF THE PILATUS CHECK SHEETS. THE SENSOR FAILED TO PROVIDE THE PROPER INDICATIONS WHEN THE MAINTENANCE BOX WAS USED TO PERFORM THE TEST. THE DEFECTIVE PART WAS REPLACED AND THE APPROPRIATE MAINTENANCE ACTIONS PERFORMED, WITH NO FURTHER DISCREPANCIES NOTED.