As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG SMELL COMING FROM ABOVE OBSERVERS JUMPSEAT BEHIND C/B PANEL. NO SMOKE OR HEAT IN THAT AREA. NOTED SMELL INTERMITTANT. LEFT AFT FUEL BOOST PUMP C/B TRIPPED. FOUND R-18 RELAY ARCHING AT D01612 RECEPTICLE. REPLACED D01612 RECEPTICLE AND R-18 RELAY PER M/M.