What was found
DURING CRUISE FLIGHT, PILOT THOUGHT HE SAW MOMENTARY FLASHES OF LIGHT REFLECTING OFF OF LT PROP SPINNER. NO ACFT SYS WERE AFFECTED OR PERFORMANCE DETERIORATED IN ANY WAY. FLIGHT & LANDING WAS UNEVENTFUL. INSPECTED ACFT, NO DAMAGES OR ANYTHING OUT OF THE ORDINARY WERE DISCOVERED. OPENED PANELS AND FOUND DAMAGES TO AIR CONDITIONING SYSTEM COMPONENTS IN LT NOSE AREA COMPARTMENT. ON FURTHER INSPECTION MECHANIC FOUND METAL PIECE THAT APPEARS TO BE FROM AIR CONDITIONING MOTOR FAN SHROUD AND IT WAS GETTING HIT BY THE AIR CON MOTOR FAN, BEING THE MOST LIKELY CAUSE OF THE PILOT OBSERVING FLASHES OF LIGHT.