What was found
REQUEST INSPECTION FORUNUSUAL BURNING SMELLON FLIGHT DECK STRONG SMELL IN AIRCRAFT. CONFIGURED A/C IN SEVERAL WAYS AND FOUND THE SMELL TO GET STRONGER WITH THE FOLLOWING CONFIGURATION (PACKS OFF, HOT AIR AUTO, CAB FANS AUTO, CARGO VENTS AUTO, AVIONICS BLOWER AUTO EXTRACT SET TO OVERRIDE). SMELL DISSAPTED IN OTHER CONFIGURATIONS OR REMAINED APPROXIMATELY THE SAME. PLACED HANDS ON THE BLOWER FAN(20HQ) AND EXTRACT FAN (18HQ) THE BLOWER FAN 20HQ WAS EXTREMELY HOT TO THE THE TOUCH. SUSPECT THE BLOWER FAN AT FAULT. R&R 20HQ FAN-BLOWER AVNCS VENT PER AMM 21-26-51 .OPS CHECK GOOD ,NO FAULT NOTED .RAN AIR CONDITIONING WITH HOT AIR ,NO SMELL PRESENT IN THE AIRCRAFT .AIRCRAFT OKAY TO SERVICEPARTS USED: 31-2126-9-9004,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1356835 SN OFF 4134 FAN, AVIONICS F OFF 31-2126-9-9004 4134 ON 31-2126-9-9004 3487