What was found
BATTERIES TRIPPED OFF LINE AND WERE HARD TO RESET. AIRCRAFT FERRIED BACK TO BIL TO INVESTIGATE PROBLEM. CREW REPORTED NO PROBLEMS ON RETURN FLIGHT. FOUND LEFT GROUND IN THE WHEELWELL FOR THE LEFT BATTERY AND GENERATOR HAD INDICATIONS OF A POOR GROUND CONNECTION WHEN DISASSEMBLED. NO OTHER VISUAL INDICATIONS WERE NOTED. GROUND RUN AND FLIGHT OPERATIONAL CHECK OK AFTER CLEANING GROUND CONNECTION. (M)