What was found
CLIMBING THROUGH ABOUT FL300 A BURNING ODOR WAS IN THE COCKPIT (PAX COULD NOT ODOR SMOKE IN CABIN). M2B- INSPECTED BEHIND INSTRUMENT PANELS AND UNDER GLARESHIELD PANELS WITH NO FAULTS NOTED. RAN AIRCRAFT FOR .5 HRS WITH NO SMELL OF SMOKE. TALKED WITH TECH REPS AND WAS TOLD TO CHECK FOR BURNED OUT BULBS IN ANNUNCIATOR PANEL DUE TO HISTORY OF SMOKY ODOR WHEN BULBS BURN OUT. FOUND 4 INDIVIDUAL BULBS OUT IN THE UPPER AC POWER ANNUNCIATOR PANEL. REPLACED BULBS WITH NEW AND RAN AIRCRAFT FOR .5 HRS WITH NO SMELL OF SMOKE NOTED. WORK DONE IAW MM CHP 33-10-00.