What was found
APU BLEED DUAL PRESSURE FLUCTUATES BETWEEN 0 AND 40PACK SELECTION LEFT RIGHT OR BOTH MAKE NO DIFFERENCE. GROUNDED - YES. (RESOLVED ON W/O: 1971307 TASKCARD: N/R-00001 ) ACCOMPLISHED IFIM TASK 749-52-00-810-811. AND FOUND SOME DEBRIS ON TOTAL PRESSOR SENSOR IN STEP (10)(B). REMOVED, CLEANED AND REINSTALLED TOTAL PRESSOR SENSOR IAW AMM 49-52-32. AND BLEW OUT THE TOTAL PRESSURE AND DIFFERENCIAL PRESSURE LINE. AND REINSTALLED DELTA PRESSURE SENSOR IAW AMM 49-52-33. PERFORMED NORMAL APU STARTING AND OPERATION IAW AMM 49-11-00-860-801. AND BLEED SUPPLIED. NO DEFECTS NOTED AT THIS TIME. THIS RELEASES A/C FROM MEL 49-52-01A. PLACARD REMOVED. SEAMC MITCH NOTIFIED.