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.
However, by the end of 2014, residential rooftop PV system installed prices averaged $3.48 per watt, down from $3.83 cents per watt in the first three months of 2014.This represents the largest absolute decline across any of the market segments.riven by significant reductions in balance-of-system costs, the cost for a medium-scale commercial system averaged $2.25 per watt by the end of 2014. This is down from $2.53 per watt in the first quarter of 2014.