What was found
AFT CARGO DOOR LIGHT CAME ON DURING TAXI AFT CARGO DOOR INDICATION LIGH INOP. .CARGO DOOR IS CLOSED , PUT IN MEL 5271E MEL 5271B APPROVED MEL 5271B , WE JUST COMPLIED WITH MEL , CARGO DOOR IS CLOSED AND CHECKED FROM OUT SIDE AND INSIDE . COMPLIED WITH MEL INTERROGATED PSEU, NO FAULTS. ACCOMPLISHED PSEU SENSOR TARGET TEST REF FIM 32-09 FAULT TREE 813. DOOR LOCKED SENSOR S10088 ADD EMP:U404924 SHOWS AS FAR EVEN WITH AFT CARGO DOOR CLOSED AND LOCKED. VERIFIED SENSOR ADJUSTMENT REF AMM 52-71-00-825-031. DOOR LOCKED SENSOR S10088 NEEDS REPLACED. ALSO AFT CARGO DOOR NEEDS TO BE READJUSTED; HANDLE IS TOO DIFFICULT TO OPERATE. INSUFFICIENT GROUND TIME TO REPLACE S10088. AIRCRAFT REMAINS IN MEL CONFIG. ADDED MATERIAL