What was found
SEA - PASSENGER IN ROW 8 D&E REPORTED A BURNING SMELL. F/A ALSO REPORTED A SIMILAR FAINT SMELL. PERFORMED GVI OF MID-CABIN, INCLUDING PSU'S, OVERHEAD BINS, AND UNDER SEATS. DID NOT SMELL ANY BURNING ODOR OR NOTICE ANY EVIDENCE OF BURNING. ALSO, PERFORMED GVI OF MID-CABIN TEMP SENSOR AND DID NOT SEE ANY EVIDENCE OF BURNING. CLEANED MID-CABIN TEMP SENSOR IAW Q400 AMM 21-61-09-160-802. AS PER MTX CTRL REQUEST, PERFORMED OPS TEST OF BLEED AIR SYSTEM IAW Q400 AMM 36-11-00-710-802. BLEED AIR TESTED GOOD. NO BURNING SMELL NOTED ANYWHERE IN CABIN. A/C IS OK FOR SERVICE, NO DEFECTS NOTED AT THIS TIME. RETURNED TO SERVICE. NO PARTS REPLACED.