re: Can a stair lift chair be built that can be used on AIR FORCE ONE for Joey?

The Whitehouse physician should write orders prohibiting him from traveling.
Also...

No solid foods
No lifting objects heavier than 6 lbs 8 ozs
Carpeting should be securely fastened down. Tack down edges of carpets and rugs.
Remove throw rugs that bunch up or slide, use skid-resistant rugs.
Keep walkways clear of clutter, especially electrical and telephone cords.
Place bright, contrasting colored tape on the top and bottom of steps of stairways.
Install and use secure handrails along the full length of both sides of stairways and hallways.
Place slip-resistant material on bare stairs.
Be alert to pets who can pop up in front of or behind you.
Have a daily check-in time with a friend, family member or neighbor by phone. This will alert someone if there is a problem and you are unable to answer the phone.
Always try to see who is at the door before opening it. Look through a peephole or a safe window. Ask any stranger who he or she is, what organization he or she represents and ask them to show their organizational identification. Keep the door locked if you are uneasy.