As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN APU ON AND BLEEDS SELCTED IN APU, A STRONG DEICE SMELL WAS PRESENT IN THE CABIN. NO NOTICABLE SMELL ON ENGINE BLEEDS. CORRECTIVE ACTION: PERFORMED BORESCOPE OF APU INLET AND EXHAUST. OPS CHECK GOOD. NO DEFECTS NOTED. IAW SERVICE INFORMATION LETTER LS_CL300_01 R