The best kept secrets? Every airline has special subtle signals to indicate a hijacking (such as "neglecting" to bring the flaps up after vacating the runway). They don't tell people those.
The F-22 is designed with classified stealth and radar technology. A lot of the avionics are still classified too. You'd be hard-pressed to get information on that.
Read other answers by Tim Morgan on Quora:
- Can a pilot deliberately depressurize the cabin of a Boeing 777 while keeping himself safe wearing an oxygen mask, thus killing everyone onboard before they could react?
- Why should an airline pilot be able to turn the plane's transponder off?
- Why do some airliner pilots turn on only one engine while taxiing?
from Quora http://ift.tt/29eLrra
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