As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTICED FUEL SMELL IN COCKPIT. AIRCRAFT RETURNED TO BASE AND FUEL CAP WAS RESEATED AND SMELL COULD NOT BE DUPLICATED ON NEXT RUN. THEN AIRCRAFT WAS FLOWN TO A MAINTENANCE FACILITY WITH NO FUEL SMELL IN FLIGHT, BUT DURING OTHER MAINTENANCE THE FUEL VENT LINES WERE INSPECTED AND FOUND TO BE IN NEED OF REPLACEMENT. P/N: 70-061J300W360A & 70-061L000T826A. AMC SDR CONTROL ID # QMLA2021121420065.