entry if you know the code. but if the person inside the cockpit switches it to lock the keypad won t work for five minutes and there s another override that goes beyond five minutes. i can also override the keypad and hold it in the lock position and now he cannot use the keypad or enter the door while it is locked. reporter: no one can get in? no one can get in. reporter: to keep your co-pilot out, what do you do? if he knew the keypad number to get in i hold the lock and he cannot get in. reporter: can you manually fly this and hold the lock button? oh yes. easy. reporter: then that s a purposeful act? oh yes. reporter: again and again, we fly through the scenarios in autopilot and manual both managed to crash the plane and both had to be deliberately programmed or flown into the ground. what does that suggest to you as far as his determination?
and says that the door is open. and if i release it, it goes back to the normal position. and the norm means locked? that is correct. reporter: according to the airbus operations door there is a keypad that allows the entry if you noeknow the code, but if the person inside switches it to lock the keypad won t work for five minute and there is another that goes beyond five minutes. and ki the key pad and hold it in the lock position, and he cannot use the keypad or anything, because it can t go in. reporter: and so to keep the co-pilot out, what do you have to do? if he knew the keypad number i hold lock and he can t get in. and can you manually fly this and hold the lock button? oh yes, easy. reporter: but then that s ais a purposeful act? very much so. reporter: again and again, we fly through the scenarios in
high-tech passenger jets used around the world. normal, lock, and unlock. reporter: he like all pilots has used the switch hundreds of times. the unlock you have to pull up and hold it. a light comes on, says the door s open. but if i release it it goes back to normal position. reporter: norm means that it s locked. norm is locked. that s correct. reporter: according to an airbus operations video, there s a keypad entry on the outside that allows entry if you know the code. but if the person inside the cockpit switches it to lock, the keypad won t work for five minutes. and there s another override that goes beyond five minutes. i can also override the keypad and hold it in the locked position, and now he cannot use the keypad or enter the door at all. it is locked. reporter: no one can get in? no one can get in. reporter: so to keep your co-pilot out what do you have to do? to keep him out if he knew the keypad number to get in i just hold the lock. he cannot get
times. unlock you have to pull up and hold it. lock comes on, says the door s open. but if i release it it goes back to normal position. reporter: norm means that it s locked. norm is locked. that s correct. reporter: according to an airbus operations video, there s a keypad entry on the outside that allows entry if you know the code. but if the person inside the cockpit switches it to lock, the keypad won t work for five minutes. and there s another override that goes beyond five minutes. i can also override the keypad and hold it in the locked position, and now he cannot use the keypad or enter the door at all. it is locked. reporter: no one can get in? no one can get in. reporter: so to keep your co-pilot out what do you have to get in? to keep him out if he knew the keypad number to get in i just hold the lock. he cannot get in. reporter: can you manually fly this and hold the lock button? oh, yes. easy. reporter: then that s a very purposeful act. very mu