A B737-400 WAS DISPATCHED IN NON COMPLIANCE WITH MEL SPECIAL PROCS ON A CLRED DEFERRED ITEM NOT ACCOMPLISHED. #2 CSD LOW PRESSURE WARNING LIGHT WAS NOT RELAMPED.
Synopsis
A B737-400 WAS DISPATCHED IN NON COMPLIANCE WITH MEL SPECIAL PROCS ON A CLRED DEFERRED ITEM NOT ACCOMPLISHED. #2 CSD LOW PRESSURE WARNING LIGHT WAS NOT RELAMPED.
Narrative
MASTER CAUTION LIGHT FLICKERED DURING CLB UNTIL 10000 FT. UNABLE TO DETECT ANY ANNUNCIATOR LIGHTS. R1 DOOR POS LIGHT SWITCH MEL'ED; OVERHEAD DOOR 'FORWARD SVC' LIGHT ON CONSTANTLY. THIS LEAD THE FLT CREW TO SUSPECT THE FLICKERING MASTER CAUTION LIGHT WAS RELATED TO THE BAD R1 DOOR SWITCH. PURPOSEFULLY INCREASING CABIN PRESSURE STOPPED THE MASTER CAUTION FROM FLICKING ABOVE 10000 FT. UPON ARR IN ZZZ1; CAPT AGAIN TESTED ALL LIGHTS AND FOUND #2 GENERATOR CSD LIGHTS -- LOW PRESSURE AND HIGH OIL TEMP -- DID NOT ILLUMINATE. THE 2 LIGHT MODULES WERE PULLED AND THERE WERE NO BULBS IN EITHER ONE. FLT CREW RELAMPED BOTH LIGHTS AND THEY TESTED NORMALLY. CREW NOTED PREVIOUSLY CLRED MEL 24-1A IN LOGBOOK (#2 GENERATOR BUS OFF-LIGHT WAS LAMPED). ON CLBOUT FROM ZZZ1; WE AGAIN GOT THE FLICKERING MASTER CAUTION; BUT WERE ABLE THIS TIME; DUE TO RELAMPED CSD LIGHT; TO SEE A FLICKERING CSD OIL PRESSURE LIGHT. WHEN THE CSD DRIVE TEMP SWITCH WAS MOVED FROM IN-TEMP; WHICH WAS NORMAL; TO SELECTED RISE TEMP; THE RISE TEMP WAS PEGGED FULL HOT. CHKLIST COMPLETED AND #2 CSD DISCONNECTED. CALLED SAFETY OFFICER AS WE FELT THE MISSING LIGHT BULBS CREATED A VERY SERIOUS SAFETY SIT. WHEN ZZZ MAINT REAPPLIED THE MEL 24-1A; FOUND OUT MAINT REMOVES BULBS AS PART OF MEL. THEY WERE NOT REPLACED WHEN THE MEL WAS CLRED.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.