When the canadian coastguard moved from 206's to 105 it is said that they experienced a decrease in doc's . I have no documentary evidence to support this but the 105 has very few limited life components , the reserve for parts on the L4 ( 111.7 /hr) is much more than the maint reserve for the extra engine ( 54.88 / hr) . The new blade as used on the super 5 and 105 LS super lifter reduces both vibration and noise.