If you fly the two fourteen within the limits you won't have any problems with the tail boom. The logging industry was largely responsible for those failures. The K- Max was specifically designed for lifting but they too have issues... MR blades touching in flight...very limited yaw control at low power settings....no pax or cargo and they won't do much more than 80 kts..versus 140 for the two fourteen...
Last edited by R.OCKAPE; 14th Aug 2009 at 06:16.