What was found
SUSPECTED FUEL LEAK FROM NO.1 ENGINE SIDE. NEEDED TO CROSSFEED TWICE DUE TO 400 LB. IMBALANCE. NOTED FUEL FLOW NR 1 SIDE HIGHER THAN NR 2 SIDE BY AS MUCH AS 200 LBS PER HOUR AT CRUISE. POSSIBLE FLUID ON FLAP ON NR 1 SIDE. FUEL BURN STL-BWI 400 LBS GREATER BETWEEN T/O AND LDG. PERFORMED GVI ON FLAP ON N0 1 SIDE FOUND NO LEAKS OPENED ENGINE NR FAN COWLS IAW AMM 71-11-02 PERFORMED ENGINE INSPECTION; PER AMM 71-00-00 NO LEAK NO DEFECTS. PERFORMED ENGINE RUN PER TASK 71-00-00-700-801-F00 NO LEAKS AFTER ENGINE IDLE RUN PERFORMED FQIS BITE TEST PER FIM 28-41-TASK 801 NO FAULTS A/C OK FOR SERVICE