What was found
STRONG BURNING ODOR IN THE COCKPIT, DURING CRUISE FLIGHT. DIVERTED. PERFORMED VISUAL INSPECTION OF THE AVIONICS RACK AVIONICS FAN, COCKPIT GLARE SHIELD, COCKPIT INSTRUMENTS, OPENED INTERIOR COCKPIT PANELS. NO SIGN OF BURNED CABLE OR WIRES NOTED IAW AMM 20-50-00. ACFT RETURNED TO SERVICE.