Most commercial aircraft in service recirculate 50 percent of the air delivered to the passenger cabin for improved control of cabin circulation, humidity and fuel efficiency.

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Gulfstream's fastest private jet, the G550, features wireless LAN and a satellite communications system for telephone calls, plus there's a DVD player, two LCD screens and temperature control within the cabin.

FORBES: Magazine Article

So is an electrotransparent glass roof that allows passengers to control the amount of sunlight entering the cabin during the day, or, at night, to adjust the ambient lighting.

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The top half and the control panels are clean, but the engine room and cabin were submerged after a hurricane punched a hole through the fiberglass hull.

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Again the cabin floor collapsed, but this time with fatal consequences, as the cables used to control the aircraft were crippled and the aircraft went into a descending turn before crashing into a forest.

BBC: Dreamliner trouble: A brief history of airliner problems