B757 AND B767 APU SURGE VALVE FILTERS WERE INSTALLED IN NON COMPLIANCE OF A SVC BULLETIN. PROB CORRECTED BY FILTER PURCHASE FROM ANOTHER VENDOR.

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1) I HAVE BEEN GETTING OLD STYLE FILTERS MANUFACTURER #111790-2 LABELED AS NEW STYLE FILTERS MANUFACTURER #856504-2. IT'S A COMPLIANCE ISSUE. I ORDERED ALL THAT WE HAVE IN STOCK (10) AND 8 WERE THE INCORRECT FILTERS. NOW THAT WE HAVE NO FILTERS; WE NEED NEW FILTERS. I ALSO FILED THE FORM LINK AND HAVE NOT HEARD FROM ANYONE. YOUR HELP IS REQUESTED. COULD YOU ALSO GET SOME MORE FILTERS? I'M JOB STOPPING 1 VALVE TODAY FOR THE ABOVE REASON. 2) OUT STATIONS NEED TO BE AWARE OF THE DIFFERENCES OF FILTERS SINCE THERE ARE NO NUMBERS ON FILTER. 3) RECEIVED OEM AND COMPARED IT TO THE REPAIRED ONES. RESEARCHED CMM AND FOUND SB (SVC BULLETIN) ON FILTERS. 4) SEND AMA OUT TO LINE STATIONS. TRAIN SHIPPING OF DIFFERENCE. PUT PART NUMBER ON FILTER. TELL REPAIR STATION OF CHANGE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THE INCORRECT SURGE VALVE FILTERS WERE REPLACED ALMOST IMMEDIATELY WHEN THE PROB WAS DISCOVERED. THE RPTR SAID THE REQUIRED FILTERS WERE OBTAINED FROM AN OUTSIDE VENDOR AND ALL SURGE VALVES IN STOCK AND IN ACFT WERE REPLACED.