What was found
THE AIR FILTERS, PN BA-24, USED ON THESE ACFT ARE 12 MONTH/200 HR REPLACE ITEMS. THESE FILTERS ARE FOAM CYLINDRICAL SHAPED MADE FROM A SHEET OF FOAM ROLLED AND GLUED TO FORM THEIR SHAPE. ALMOST EVERY ACFT THAT HAS BEEN SEEN WITH THIS FILTER INSTALLED, THE FILTER IS SEPARATING AT THE GLUE LINE, ALLOWING UNFILTERED AIR TO ENTER THE INTAKE. THESE FILTERS DO NOT LAST FOR THE DURATION OF THEIR INTENDED LIFE.