What was found
THE SHUT-OFF FUNCTION IS INOP ON THE LOW PRESSURE REGULATOR OF THE 2-STAGE PNEUMATIC REGULATOR VALVE ASSY. WHEN ACTIVATED VALVE DOES NOT ALLOW SUFFICIENT PNEUMATIC PRESSURE FOR OPERATION OF THE SURFACE DEICE BOOTS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE SHUT-OFF FUNCTION IS INOP ON THE LOW PRESSURE REGULATOR OF THE 2-STAGE PNEUMATIC REGULATOR VALVE ASSY. WHEN ACTIVATED VALVE DOES NOT ALLOW SUFFICIENT PNEUMATIC PRESSURE FOR OPERATION OF THE SURFACE DEICE BOOTS.