What was found
TCDS 7A15, PILATUS ENGINE BUILD SPEC FOR PWC IS 877 & 624. THIS REQUIRES A FINE ENGINE INLET SCREEN, DUE TO NO INERTIA PARTICAL SEPARATOR INSTALLED ON THE ENGINE INTAKE SYS. ENGINES HAVE BEEN CHANGED, REPLACEMENT ENGINES HAVE BEEN INSTALLED WITH STANDARD COARSE INTAKE SCREENS, EXPOSING THE ENGINE TO FOD.