Where darkness didn’t show up much before, more recently 40-percent of the 172 fatal accidents happened at night. Almost 20-percent reflected some form of pilot incapacitation ranging from a massive heart attack to cataracts screwing up night vision to the point that the pilot couldn’t func...
Drag rise is apparently less dependent on angle of attack than in cleaner designs. Throttle back to the lower setting, and burn drops to 9.5 gph, but speed is only reduced to 117 knots. That's a 30 percent reduction in fuel burn in exchange for only a 15 percent loss of cruise speed...