As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO DEPARTURE WHEN NR 1 AUXILIARY HYDRAULIC PUMP SELECTED ON, SPARKS WERE EMANATING FROM RIGHT MAIN WHEELWELL. FOUND 2 OF 3 AUXILIARY HYDRAULIC PUMP POWER WIRES CHAFED AND SHORTED TO WORN ADEL CLAMP THAT WAS MISSING RUBBER CUSHION. REMOVED AND REPLACED WORN WIRE SECTIONS AND ADEL CLAMP. (X)