As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE F/A S REPORTED A BURNING HAIR SMELL BETWEEN ROW 23-26 PACK 2 WAS TURNED OFF AND CROSS BLEED CLOSED , SMELL PERSISTED -PERFORMED TSM 05-50-00-00-810-831 NO LEAKS NOTED / SPILLS FOUND IN ENGINES / APU RAN BOTH ENGINES AND ISOLATED PACK 1 /2 WENT THROUGH FULL COLD CYCLES ON PACKS NO SMELLES NOTED , AC OKAY FOR SERVICE