We have some experience with accessibility in the houses we restore. The first question regards the hands. Is it a lack of grasping strength? In which case we install latches that can be pushed to release the door. However, a lack of grasping strength raises the issue of accessibility on the stairs leading to the coach, I would think. Even a handrail might not be sufficient.
Here is a possible resource in the RV world:
Achievers International (chapter of Family motor Coach Association, FMCA)
9251 E. Lake, Otisville MI 48463; 517/871-4377
Handicapped Travel Club
contact Merle Young, 12555 Lantern Road, Fishers, IN 46038-2884 or e-mail: mry@netdirect.net