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To: Francis J. Burke who wrote (144428)	9/29/2001 10:27:36 AM
From: willcousa	Respond to of 186894

Maybe biometrics at the cockpit door so that you don't have to fool with control systems.

To: Francis J. Burke who wrote (144428)	9/30/2001 2:06:24 AM
From: BelowTheCrowd	Respond to of 186894

It's possible. But what then happens if the controls get "locked?" You've not only locked out the terrorists, you've locked out anybody else too. It actually makes things relatively easy for the terrorists. Knock out the pilot and copilot and the plane will continue on course until it runs out of fuel. This would only work if you could control the plane from the ground. If that were the case, a biometric lockout would probably be somewhat superfluous. I think there would probably be some issues with trying to lock out all controls based on biometrics. What do you do? Put a fingerprint sensor on every control? Require the pilot to fly with a full-time retinal scan going? Also keep in mind that every additional complex system MUST have redundency and that each one of those will generate a whole new set of possible failure modes which could create more problems than it addresses. That, of course is the problem with many of the solutions proposed. There are a lot of things that would make planes safer from terrorist attacks that would make them less safe in more routine emergencies or even normal flight. mg