As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS REPORTED IN CRUISE AND DESCENT A STRONG FUEL ODOR IN THE COCKPIT AND CABIN AREA. MAINTENANCE TIGHTENED A LOOSE "B" NUT IN THE FUEL PURGE AREA ON THE NR (1) ENGINE IAW MM 28-20. CLEANED CHECK VALVES ON THE FUEL PURGE SYSTEMS FOR THE RT ENGINE AND LT ENGINE IAW MM 71-70. NO NEW ODORS WERE PRESENT. (K)