What was found
DURING TAXI APU AIR INOP LIGHT ILLUMINATED .AC RETURNED TO GATE AND MAINTENANCE GROUNDED AC AND DEFERRED APU IAW ABX MEL-49-11-1A . AND AC DEPARTED . BITE CHECK ECU SHOWS LAST FLIGHT FAULT "PT SENSOR" AND MINI FLAG 14. LINE TO PT SENSOR (TOTAL PRESSURE TRANSDUCER) SEEMED TO HAVE EXCESSIVE MOVEMENT. "O" RING INTACT BUT MIGHT BE WORN. DI REMAINS, A/C REMAINS NO ETOPSREMOVED AND REPLACED APU FLOW SENSOR MODULE AS PER B767 AMM 49-53-08 THIS CLEARS DI 51982 OPS CHECKS NORMAL AT THIS TIME PLACARD REMOVED. LP 38722-58/1 ( AMENDED )