Mechanical Lock News Today : Breaking News, Live Updates & Top Stories | Vimarsana

We don't know what the investigation team is doing itself. could we hear that sound? yes. if that mechanical lock was locked, there's no way that he was getting into that cockpit. on the ground -- >> there is no digital override to that locked door if you do it manually at the door? >> right. and if somebody attempted to get in with the manual method from the opposite side, the electronic would override it. so there's a good chance -- >> two ways that he could keep him out. >> yes. and a lot of maintenance uses that method on the ground. >> more questions than answers. les, thank you. here's...

So that second person is in here -- >> the flight attendant for example. >> would be in here and could verify the person on the outside of the door before opening it. >> so she doesn't touch this. >> no this is the cockpit door lock. this is for pilots and pilots only. this switch is so i can -- if somebody is at the door i don't want them to come in i can take the switch to lock and that would completely lock out the electronic keypad on that door. i also have a mechanical lock i can go back to the door and lock it. >> reporter: and this -- quite a bit of discussion has been on the altitude o...