https://www.bbc.com/news/business-47655115
Karlene Petitt has been a pilot for more than 40 years, and has trained pilots for 21 years for major American airlines. Ms Petitt has also just completed a PHD in airline safety.
As part of the four-year research she surveyed more than 7,000 pilots about safety and training, guaranteeing them complete anonymity.
"Based upon my research, I have identified that we have a problem with pilot training worldwide, and training is going in the wrong direction which will impact safety," says Ms Petitt, who is based in the US.
"Pilots are often required to teach themselves the aircraft systems. They learn on their own - with no ground school," she adds.