As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THE AIRCRAFT HAS A SMELL OF MUSTY ROTTEN SOCKS THROUGHOUT THE CABIN. SMELL WAS STRONG ON TAKEOFF AND LANDING. MAINTENANCE ACCOMPLISHED J/C 03L00021001 AND FOUND HYDRAULIC SYSTEMS A AND B OVERSERVICED. ALSO, FOUND A HYDRAULIC SYSTEM COCKPIT INDICATOR STICKING AT TOP OF RANGE NEAR FULL MARK. REPLACED A HYDRAULIC SYSTEM COCKPIT INDICATOR PER AMM 29-33-11-404-0007. ADJUSTED HYDRAULIC QUANTITY TO PROPER LEVEL. DRAINED APPROXIMATELY ONE GALLON OF FLUID FROM A SYSTEM. AIRCRAFT OK FOR SERVICE.