Lift production specialist Sven Hillman told the inquest the second floor lift door had a faulty locking mechanism.
She failed to notice the lift had not arrived at the top floor when she opened the faulty lift door using an emergency release key.
Floor selections are made automatically, so a person chooses to get into the lift which is travelling to their floor, enabling the lifts to visit as few floors as possible.
Take the express lift to the 43rd floor from where you will be rewarded with a panoramic view over Hong Kong.
Hundreds of thousands of wheels and ball bearings embedded into the floor of the facility, the lift and even the airplanes make pulling the hefty containers possible for between one and four mortal humans.
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Miss Hirst described how Mrs Young fell from the second floor after trying to use the broken lift.
When the lift landed on the ground floor, he had pulled the door open, trying not to let his breathlessness show, his eyes sparkling with satisfaction.
You could just lift your feet off the pavilion floor if you weren't in the middle, but if I was on the field of play I would just jump or hop.
On the third floor of a handsome apartment building with an antique lift, the elegant Anichkov Pension has six rooms and one gorgeous apartment.
The inquest heard that the lift had not arrived on the second floor and Ms Lewis and carer Carole Conway fell 20ft down the empty shaft.
"This was at a time when he knew or ought to have known that the lift car was not positioned on that floor, " Miss Hirst said.
New joints in the robot's base and lower back enable RIBA-II to crouch down and lift a patient off a futon at floor level (Figure 1), the most physically strenuous task for care-givers and one that RIBA was not able to do.
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The court heard how Mr Thompson had managed to move the broken lift up from the ground to the first floor as he tried to fix it.
Developed by researchers at RIKEN and Tokai Rubber Industries (TRI), the new robot can lift a patient up to 80kg in weight off floor-level bedding and into a wheelchair, freeing care facility personnel of one of their most difficult and energy-consuming tasks.
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He said he did not go up to the second floor where Mrs Young lived, because he had "no need to" as the the lift doors could not be opened without a key.
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