As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:ETOP CREW REPORTED, DURING LOWERING THE LANDING GEAR, THERE WAS A BURNING RUBBER LIKE ODOR WITH BOTH PACKS ON. FOUND RT RUNWAY TURNOFF TOGGLE SWITCH SMOKING WHEN TURNED ON. REMOVED AND REPLACED THE TOGGLE SWITCH IN REF TO 767 M/M 20-11-00 AND OPS CHECKED IN REF 767 M/M 33-43-01-2. OPS CHECK WAS GOOD.