A B737-700 WAS DISPATCHED IN NON COMPLIANCE WITH THE ELECTRONICS AND ELECTRICAL COMPARTMENT ACCESS DOOR OPEN. FLT DIVERTED WHERE MAINT FOUND DOOR OPEN AND DOOR WARNING SYS INOP.

Narrative

ON NOV/THU/99; ACFT XYZ ARRIVED AT ZZZ MAINT FOR REGULAR OVERNIGHT SVC. A SVC CHK AND 2 DEFERRED ITEMS WERE SCHEDULED; PAX ADDRESS SYS AND ENTERTAINMENT SYS INOP. I PULLED THE CIRCUIT BREAKERS FOR THE PA AND ENTERTAINMENT SYS AND ENTERED THE E&E COMPARTMENT DOOR TO INSPECT THE COMPONENTS. I LEFT THE DOOR OPEN SO I COULD RETURN AND VERIFY THE INDICATOR LIGHT OP AFTER RESETTING THE CIRCUIT BREAKERS. AS I WAS LEAVING THE E&E COMPARTMENT I SAW THE ASSISTANT SUPVR AND UPDATED HIM. WE FOUND THE COCKPIT HAND MIKE INOP; R&R IT AND OPS CHKED PA SYS AT EACH FLT ATTENDANT LOCATION; ALL FUNCTIONS; AND ENTERTAINMENT SYS. ALL OPERATED NORMAL. I THEN PROCEEDED TO MAINT OFFICE TO COMPLETE THE PAPERWORK TO CLR THE DEFERRED ITEMS. THERE WAS NO NEED TO REENTER THE E&E COMPARTMENT AGAIN DUE TO ALL SYS OPERATIONAL CHKED NORMAL; THUS FORGETTING TO CLOSE THE ACCESS DOOR. THE ACFT DEPARTED ZZZ BOUND FOR HOUSTON; COULD NOT PRESSURIZE AND DIVERTED TO ABC FOR MAINT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE DOOR WAS LEFT OPEN AND NOT DISCOVERED BY THE GATE MECH OR THE SO ON THE WALKAROUND INSPECTIONS. THE RPTR SAID AFTER THE ACFT DIVERTED WITH AN 'UNABLE TO PRESSURIZE' RPT IT WAS FOUND THE DOOR WARNING SYS FOR THIS DOOR WAS INOP. THE RPTR STATED HE WAS INTERVIEWED BY THE FAA AND GIVEN A LETTER OR REPRIMAND.