What was found
OBSERVER ON GND REPORTED STREAM FROM LT WING. FUEL -3. 5 LT SIDE ON LDG. AT ARRIVAL FOUND ENGINE ONE FUEL LEAK OUT OF LIMITS ON THE VSV DRAIN. SUSPECTED HYDRO MECHANICAL UNIT ISSUE, REMOVAL & INSTALLATION CARRIED OUT IAW AMM TASK 73-21-14-000-805-G02, TASK 73-21-14-400-805-G02. POWER PLANT TEST REF TABLE TESTS TO CARRY OUT 3, 14, 5, 6 & NOTE 11. HIGH POWER ENG GROUND RUN CARRIED OUT IAW AMM 71-00-00. GROUND RUN OPS NORMAL & NO LEAKS FOUND. AIRCRAFT RETURNED TO NORMAL. IDT INSPECTION ACCOMPLISHED IAW GMM 09-10-05 REQUIREMENTS. INSPECTION CONFIRMED CORRECT INSTALLATION AND TESTING OF NR 1 ENGINE HMU IAW AMM73-21-14-400-805-G02. LEAK CHECKS NORMAL.