The plane used for this flight was a DeHavillandDH-114 Heron B2 airplane, registration number #N554PR. Eighteen passengers and a crew of two were on board.
As the plane first approached Ponce's airport, the pilots decided to abort their initial landing attempt. The crew did not give the control tower any explanation as to why they took that decision; in fact, no reason for this aborted maneuver was ever discovered. During their second attempt at landing the pilot over-rotated the plane, causing it to crash and killing three passengers and both people in the cockpit.
FAA and NTSB investigators concluded that the crash of Prinair flight 191 was simply a case of pilot error.
Flapping flight in vertebrates was probably preceded by gliding; in insects it may have originated by leaping and gliding, by surface skimming on water, or (if small enough) by passive floating in the air.
Flight of tiny insects is in the lower range of Reynolds numbers, where viscous forces are dominant, whereas large insects and vertebrates operate in the higher range, where inertial forces are important.
Flight is the process by which a heavier-than-air animal or object achieves sustained movement either through the air by aerodynamically generating lift or aerostatically using buoyancy, or movement beyond earth's atmosphere, in the case of spacecraft.
Feeds |
Contact