What was found
(CAN) CREW NOTICED RT INBD LE COVERED IN ICE AFTER LANDING. TROUBLESHOOTING LED TO BORESCOPE OF SUBJECT LE DE-ICE PICCOLO TUBE. IT WAS DISCOVERED THAT THERE WERE NO BLEED AIR DISTRIBUTION HOLES DRILLED INTO TUBE RIGHT FROM NEW MANUFACTURE. ACCESSED LT SIDE INBD PICCOLO TUBE & CHECKED WITH BORESCOPE. FOUND TWO, FULL LENGTH ROWS OF DISTRIBUTION HOLES PRESENT. CONTACTED MANUFACTURER & HAVE SHIPPED LE TO THEM FOR REPAIR & RECERTIFICATION. THIS ACFT HAS BEEN IN OUR OPERATIONS FOR APPROX 7 YRS. THE FLIGHT DEPT IS NOW 85%, NEW CREW OPERATED. WHEN THE AFFECTED CREW WAS ASKED IF THEY NOTICED IT AT ALL IN FLIGHT & THEY REPLIED THAT THE INBD LE`S CAN’T BE SEEN FROM THE COCKPIT IN FLIGHT. NORMALLY, DURING INFLIGHT DE-ICING, THEY ENSURE THAT THE VISIBLE LE SURFACES ARE BEING DE-ICED & THAT THERE ARE NO ABNORMAL SYS ANNUNCIATOR OR MSG WARNINGS. THE ACFT MANUFACTURER IS AWARE OF THIS OCCURRENCE & IS GOING TO INVESTIGATE THE ISSUE.