A helicopter pilot lost control of his Robinson R44 at an airport in Texas, USA. The spinning aircraft collided with a small plane. The pilot was lucky.
According to Bredt's rule, double bonds cannot exist at certain positions on organic molecules if the molecule's geometry deviates too far from what we learn in textbooks. This rule has constrained ...
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AUSTIN (KXAN) — The Federal Aviation Administration (FAA) is investigating after a small plane “unexpectedly entered the flight path” of an American Airlines flight flying into Austin ...