A B737-300 WAS DISPATCHED WITH AN OPEN LOGBOOK RPT NOT CLRED OR DEFERRED. WHILE WORKING LOG RPT FOUND WING ANTI-ICE STUCK OPEN AND DEFERRED.

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AN ACFT HAD THE FOLLOWING LOGBOOK WRITE-UP: ON POSTFLT; FOUND #1 ENG TURNING WITH THE ENG SHUT DOWN; APU OPERATING WITH APU BLEED OPEN; CLOSED APU BLEED AND ENG STOPPED TURNING. WHEN I ARRIVED AT THE AIRPLANE ALL APPEARED NORMAL; SO AS A PRECAUTIONARY ACTION I OPENED THE #1 ENG COWL AND CYCLED THE START VALVE OPEN AND CLOSED SEVERAL TIMES; TO MAKE SURE IT WOULD CLOSE FULLY. THEN I HAD THE CAPT START #1 ENG TO SEE IF THE START VALVE WOULD OPERATE NORMAL. ON THIS START ATTEMPT THE ENG ONLY ACHIEVED 16% N2 AND THE START WAS ABORTED. A SECOND START ATTEMPT WAS MADE BY MANUALLY OPENING THE START VALVE AND AGAIN ONLY 16% N2 WAS ACHIEVED AND THE START WAS ABORTED. I HAD THE CAPT ATTEMPT TO START #2 ENG AND ONLY 16% N2 WAS ACHIEVED. AT THIS POINT I REALIZED THAT THERE MUST BE A PNEUMATIC DUCT LEAK SOMEWHERE OTHER THAN AT THE #1 ENG. DURING THE INVESTIGATION; I FOUND THE R WING ANTI-ICE VALVE STUCK OPEN AND APU BLEED AIR DUMPING OUT OF THE WING LEADING EDGE. IN THE PROCESS OF MEL'ING THE R WING ANTI-ICE VALVE THE ORIGINAL WRITE-UP WAS NOT ADDRESSED IN THE LOGBOOK AND THE FACT THAT THE ENGS WOULD NOT SPOOL UP FOR START INDICATING A LEAK WAS NOT ENTERED INTO THE LOG. THE FOLLOWING IS HOW THE ORIGINAL WRITEUP WAS ADDRESSED: 'FOUND R WING ANTI-ICE VALVE STUCK OPEN. OPERATE PER MEL. SPECIAL PROCS COMPLIED WITH.' AFTER CLOSING THE PNEUMATIC ISOLATION VALVE A NORMAL START ON #1 ENG. THE ENG INDICATIONS WERE NORMAL INCLUDING THE '#1 START VALVE OPEN' LIGHT EXTINGUISHED; INDICATING THE START VALVE WAS CLOSED. IN THE CORRECTIVE ACTION I FAILED TO STATE THAT THE #1 START VALVE OPERATED NORMAL. I KNOW THAT OTHER THAN THE R WING ANTI-ICE VALVE BEING MEL'ED IN THE OPEN POS; THE REST OF THE PNEUMATIC SYS WAS WORKING NORMALLY. THE MAJOR FACTOR CAUSING THE OVERSIGHT WAS THE PRESSURE TO AVOID ANY FURTHER DELAY.