As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTS THERE WAS A STRONG BURNT RUBBER SMELL IN COCKPIT ON DECENT AND AFTER LANDING. MTX GROUNDED AC AND PERFORMED AR CONDITIONING SYSTEM OIL SMOKE /FUME PRACTICE IAW B767 AMM 21-00-21 . NO ODER PRESENT / NO OIL CONTAMINATION NOTED .OPERATIONAL TEST OF BOTH PACKS OKAY. MTX RETURNED AC TO SERVICE .