"I think we're finding, from a customer convenience standpoint, they like to have redundant, frequently used controls on the steering wheel," said David H. Hoffmeister, a human factors specialist at Ford.
He then used controls to override the entry code, and took the chance to crash the plane as the captain desperately tried to break back in.
Evidence from the cockpit voice recorder suggests he locked the door when the pilot left for a toilet break and used controls to override the entry code, downing the plane as the pilot desperately tried to break back in with a crow bar.
Evidence from the crashed plane's black boxes suggests that Lubitz locked the cockpit door when the pilot left for a toilet break and used controls to override the entry code, downing the plane as the pilot desperately tried to break back in with a crow bar.
Frequently used controls should be located within a radius of multiple 0.2614 from the operator's centerline, whereas less frequently used controls should be located within a radius of multiple 0.4545 from the operator's centerline.
The used controls differ in complexity and the use of external input data like price and weather forecasts.
