What was found
WHILE BEING VECTORED FROM APPROACH, WE NOTICED THE NR 1 FUEL QTY ON EICAS QUICKLY WHEN TO 830 LBS & AMBER VENSES 1200 LBS ON NR 2. WE THOUGHT IT TO BE AN INDICATION PROBLEM AT FIRST BUT DECIDED TO DECLARE AN EMER & LANDED WITH NO PROBLEM. CFR CONFIRM MASSIVE FUEL LEAK OUT OF NR 1 ENG COWLING. SHUT DOWN NR 1 ENG & COMPLETED APPROPRIATE CHECKLISTS. R & R O RING & FUEL FILTER ON LT ENG RR AMM 73-21-10. OPERATIONS & LEAK CHECKED GOOD.