What was found
CHRONIC LVL 2 DUE TO REPEATED WRITE-UPS OF NGS, DEGRADED LIGHT WI TH BITE HISTORY OF NGS ASM FAILED WITH MX MSG 47-30063, PERFORM DRAIN CAP FUEL LEAK CHECK IAW AMM 47-21-00-700-802. IF FUEL SMELL OR FUEL FOUND, COMPLETE AMM REMOVALS & ALSO REPLACE ASM & O2 SENS OR REF AMM 47-11-01/02 FOR CONTAMINATION. IF NO FUEL SMELL FOUND , PERFORM FIM 47-31 TASK 839 STEP F FAULT ISOLATION AND REPLACE APPLICABLE LRUS. NOTE * O2 SENSOR RECENTLY REPLACED TWICE. THX! CARRIED BY ELB ALSO INSPECT FILTER ASSY FOR DAMAGE AS WE'VE SEEN CRACKS IN THE FILTER HEAD & BOWL CAUSING THIS MESSAGE REF IPC 47-32-04-01. THX LOCKED FOR WORK COMPLETION REF GMM 05-30-05 UNLOCKING FOR CLEARING. MTX FOUND ASM FAILED. PERFORMED FUEL LEAK CHECK FOUND NO FUEL SMELL OR FUEL REF AMM 47-21-00 FOUND FAULT 47-30063 STILL PRESENT AS WELL. VERIFIED NO CONTAMINATION ON O2 SENSOR. REMOVED ASM & FOUND ASM FAILED. REPLACED ASM IAW AMM 47-11-01 PERFORMED ELECTRICAL TEST & SYS TEST OPS AND LEAK CHKD GOOD.