As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 975, AIRCRAFT HAD A MUSTY ODOR AFTER #1 ENG START. NO ISSUES DURING EXT AIR START AND ONE ENTIRE TAXI WITH WITH #2 ENGINE. SMELL WAS WORSE ON DESCENT. PILOTS AND FLT ATT NOTICED; PERFORMED INSPECTION OF #1 ENG DUE TO SMELL PERFORMED BORO REF LOG PAGE 2541019 ITEM #1 AND #2. FOUND #1 ENG T/R OPENING ACTUATOR LEAKING. R & R ACTUATOR IAW AMM 78-36-51. RAN #1 ENG AND APU FOR 1 HR. NO SMELL NOTED.