Originally Posted By: Jarlaxle
Here's an oddball question for Astro: could a windshield have failed?
Not impossible, but extremely unlikely. Windshields are laminated multiple layer lexan/plexiglass/glass (I don't know exactly) and they tend to delaminate first and get replaced. I haven't heard of a windshield failure in decades...not on an airliner...
So, "emergency computer controls"...???
I have no idea what is meant by this.. None... if the autopilot is on, it will follow the last command from the crew (think Payne Stewart). That might be manual heading control, or it might be the route of flight in the FMC, depending on what the crew told it to do via the Mode Control Panel (autopilot/flight director controls...manual hard-wired switches that allow the pilots to change course, speed, altitude...when the autopilot is off, the MCP is responsible for flight director guidance).
There's no magic computer that takes over and flies the airplane. (that's why you can't hack an airplane...and that's a good thing). If the crew is disabled, the airplane will fly what it was last told to do. If the autopilot was off and the crew was disabled, it will fly the pitch, power and trim...that might be level flight, might not, and it will get bumped into a roll, and start turning...to eventually crash...
Catastrophic loss of a windshield would be hard, but the person on the other side of the cockpit might able to fly the airplane. 500 MPH wind after explosive decompression would make this exceedingly difficult, but a friend of mine flew an F/A-18 without a canopy after a mid-air collision that happened at 400 Knots...wasn't easy though...particularly since he lost all instruments as well...but that's another story for another day.
As far as someone with no training flying the airplane? Very unlikely. With an instructor on the ground, and good radio communication, they might be talked into turning on autopilot, and getting the airplane to fly an automatic landing...but that person would have to know how to operate the radios to make that happen...and over the ocean? There's no one to talk to at the LDOC that has the detailed knowledge to talk you through how fly the jet.
Sorry, put away your Walter Mitty fantasies...unless you've flown a complex jet airplane, there are simply so many things to manage that it's almost impossible.
How do I know this? United was selling simulator time to anyone who wanted to try flying a 747 (or 777). This was before 9-11...now, such people are suspect... I had several groups, who paid $1,500 to fly the sim for 2 hours. Good deal for a $15 million piece of equipment. Without a basic understanding of how to fly, how to program the FMC to tune the navaids and how to change the radios, these folks were barely able to keep the jet right side up. The complexities of when to select flaps, what setting, descent rates, navigation, intercepting a final approach, were all completely beyond them...I was able to talk them through some aspects, like "roll right, pull back a bit" and "you see that thing that looks like a wheel? Pull it towards you and push it down", "lift up and move that big lever near your left leg to the slot that says 1"...but to do that from the ground would be incredibly difficult.
Give me a pilot with some jet time, or who has flown with an FMC, and I could talk him through reference speed calculation, FMC programming, radio tuning, etc...but we would have to be in radio comms first...and that alone is unlikely...
As far as the book? Sure, it's on every airplane...but it's written for pilots. Like reading a book on open-heart surgery written for doctors, there will be terms and concepts that you're expected to already know from medical school. Without medical school, the surgery book is incomprehensible. The information for this particular plane would be there...but without that basic airline pilot experience, it wouldn't be of any use...it might as well be written in an alien language.
Besides, that's why there are always two pilots. We back each other up, but the truth is that pilot incapacitation happens every so often. We're redundant components...each one of us can fly the airplane without aid...