FAA - A History of Aircraft Structures Factoid for Lees Summit, MO

It was Cayley who first stacked wings and created a tri-wing glider that flew a man in 1853. Earlier, Cayley studied the center of gravity of flying machines, as well as the effects of wing dihedral. Furthermore, he pioneered directional control of aircraft by including the earliest form of a rudder on his gliders.

Instrument Ratings for Helicopter Pilots for Lees Summit, MO:

Helicopters, by contrast, are seldom equipped and almost never certified for IMC. If you get your instrument rating at 120 hours, for example, and then try to get the CFII at 250 hours, you'll probably find that your instrument proficiency has deteriorated dramatically. If, on the other hand, you get your helicopter instrument rating at 249 hours and your CFII-H at 250 hours, you only need to get sharp once.