10 Famous People Who Mysteriously Vanished
This is a very interesting video, but the information on Amelia Earhart is significantly out of date. There is a very good documentary on the latest research that has been shown on PBS.
According to the documentary, Earhart was very egotist and spent a good deal of time in self-promotion and product endorsements, for luggage, cigarettes, women's clothing etc, as well as working closely with publicist George P. Putnam.
This also effected her attitude towards flying. Not only was she highly competitive, but also had a tendency to disregard other expert's opinions, including her own Navigators.
On her first attempt, traveling East to West, she had a stopover in Hawaii. After landing in Hawaii, Earhart ran into problems on takeoff.
During the takeoff run, Earhart ground-looped, circumstances of which remain controversial. Some witnesses at Luke Field including the Associated Press journalist on the scene said they saw a tire blow. Earhart thought either the Electra's right tire had blown and/or the right landing gear had collapsed. Some sources, including Mantz, cited pilot error.
Note that "ground-looping" is when an airplane starts to spin in a fast circle on the ground. Again, according to WIKIPEDIA :
If the aircraft heading is slightly different from the aircraft's direction of motion, a side force is exerted on the wheels. If this force is in front of the center of gravity, the resulting moment rotates the aircraft's heading even further from its direction of motion. This increases the force and the process reinforces itself. To avoid a ground loop, the pilot must respond to any turning tendency quickly, while sufficient control authority is available to counteract it.
The plane was then sent back to the U.S. for repair.
On her second attempt, Amelia changed her flightplan due to weather conditions, flying West to East across the Atlantic with only Fred Noonan as her navigator. She made a number of publicity stops in South America before heading across the Atlantic to Africa.
When she took off on the first stage of flight from the U.S. to South America, she left behind important radio signaling equipment that experts say would have helped with her rescue when she finally got lost and disappeared during a final leg of her trip. As the trip was highly publicized, she decided that she did not want to delay her start just for that equipment.
When she completed the next stage of flight across the Atlantic and reached the African coastline, the navigator recommended she take one route to the desired airfield. Earhart went with her "intuition" and chose a path in the opposite direction. They ended up flying out of the way and a much longer distance than planned, risking fuel loss and disaster. Luckily, they eventually were able to find another airfield a considerable distance from her original destination.
On her final leg of the Pacific flight before heading for the U.S., she needed to hit the tiny (~1.5 miles long by .3 miles wide) Howland Island. The U.S. Naval ship USCGC Itasca was waiting near Howland Island to assist Amelia when she arrived.
Through a series of misunderstandings or errors (the details of which are still controversial), the final approach to Howland Island using radio navigation was not successful.... Another cited cause of possible confusion was that the Itasca and Earhart planned their communication schedule using time systems set a half-hour apart, with Earhart using Greenwich Civil Time (GCT) and the Itasca under a Naval time zone designation system.
Some sources have noted Earhart's apparent lack of understanding of her direction-finding system, which had been fitted to the aircraft just prior to the flight.... Earhart's only training on the system was a brief introduction by Joe Gurr at the Lockheed factory, and the topic had not come up. (WIKIPEDIA)
I don't remember the name of the PBS documentary, but I would highly recommend it if it is shown again, as it has more current research and details than what you can find on sources such as WIKIPEDIA.