There's no evidence that any of the four destroyed planes were lost to pilot error. A fifth alleged crash turns out to be a misinterpretation of a flight accident that did not result in the loss of the aircraft. McCain admitted to causing that incident through daredevil clowning but returned safely.
Cost breakdown. 1  The material cost of the horizontal mount 4 PVC gutter sections including necessary hangers and couplers is around $2.00 per foot, and professional installation cost is an additional $1.80 per foot. 2  Corner fittings cost $7 each and $3 each to be installed professionally.
How much will my system cost up front? The cost per watt of a PV system has dropped dramatically in recent years and should continue to fall. In 2014, the average cost of a residential system has fallen below $5/watt, with the bottom of the range as low as $3.50/watt.