Airstair
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An airstair is a set of steps built into an aircraft so that passengers and crew can get on and off without needing help from outside. The stairs are built as part of a door or are lowered from inside
DC-3 modified with a simple airstair
Northwest Airlines Boeing 727 with ventral airstair open
3-section folding airstair on a "Combi" 737-200 aircraft of Alaska Airlines
George W. Bush boards a VC-25 using the lower-level airstair.
On 27 April 2012, a multinational team of television studios staged an airplane crash near Mexicali, Mexico. An unmanned Boeing 727-200, fitted with numerous cameras, crash test dummies and other scie
Airstair
…The rear airstair of a DC-9 has been used to allow for recreational skydiving operations. During the 2012 Boeing 727 crash experiment, a flight crew took off in the Boeing 727 that was to be crashed and flew it to a pre-selected desert site before safely parachuting from the airstair…
The experiment aircraft while still in service with Champion Air
Aftermath at the crash site. Note that the cockpit has broken off.
Large sections from the crashed plane stored alongside Highway 5 in March 2016