What was found
STRONG BURNING RUBBER ODOR IN FLIGHT DECK AND L1 DOOR DURING TAKE OFF. DISSIPATED AND REOCCURRED ON INITIAL CLIMB AND THEN DISSIPATED AGAIN APPROXIMATELY 4 MINUTES DURATION THEN AGAIN DURING DESCENT WHEN LIGHTS TURNED ON BELOW 10,000 FT. MAINTENANCE FOUND RIGHT TURNOFF SWITCH BURNED WITH WIRING DAMAGE BEHIND PANEL. REPLACED PANEL, TURNOFF LIGHT CIRCUIT BREAKER AND TRANSFORMER AS A PRECAUTION. SYSTEM OPERATION IS NORMAL.