What was found
FUEL BOOST PUMP FAILED ON ENGINE RUN UP. UPON INSPECTION, FOUND FUEL BOOST PUMP IMPELLERS NO LONGER INTACT. ATTENTION TO THE ISSUE WAS INITIATED BY A LOW FUEL PRESSURE WARNING. A LOUD GRINDING NOISE COULD BE HEARD WHENEVER THE FUEL BOOST SWITCH WAS MOVED TO EITHER THE NORMAL OR ON POSITION. INSPECTION OF THE FUEL RESERVOIR SHOWED NO FOD THAT COULD OF INITIATED THE FAILURE OF THE PUMP IMPELLERS. INSPECTION OF THE FUEL INLET FILTERS AND SCREENS SHOWED NO SIGNIFICANT SIGNS OF IMPELLER MATERIAL.