What was found
DURING A 50-HOUR INSPECTION, FOUND T/R COUPLING DISC PACK, P/N 406-090-340-101, TO HAVE A CRACK ON ONE OUTER LAMINATE EXTENDING THREE-FOURTHS OF THE WAY THROUGH THE LAMINATE. THE DESIGN OF THIS AIRCRAFT DOES NOT ALLOW THE NR 4 THROUGH THE NR 7 (ALL OF THEM ON THE TAILBOOM) T/R DRIVESHAFTS TO FLOAT. IT IS GOING TO BE HARDER ON DISC PACS THAN A 206L. THIS IS THE THIRD OCCURRENCE OF THIS PROBLEM ON A FLEET OF TWO A/C WITH 550 HOURS FLIGHT TIME COMBINED.