As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REPORTED DISCREPANCY STATED THAT THE BELLOWS WAS FOUND BLOWN DURING A 1,200 HOURS INSPECTION. THE DUCT THAT FAILED HAD P/N 45AS63024-13 AND P/N 00624-NH1007853-10 ON IT AND IS ONLY PART OF THE OVERALL ASSY. REPLACED THE DEFECTIVE DUCT. (BEECHJET 400T - COMMERCIAL COUNTERPART BEECHJET 400A).