Basically the title. However, I would request if someone can throw some light on how FAA or the airlines train the crew to handle emergency evacuations with a disabled person on board. Are the ramps and slides accessible to persons with disabilities?
You can find the full text of the FAA's recommendations in this AC
But the flight attendant is responsible for discussing with them whats best.
ASSISTING DISABLED PERSONS. The handicapped person knows best . the manner in wbch he can be assisted, and flight attendants should not hesitate to discuss this with the individual. Keep in mind that different disabilities have different needs, and injury can result if a person with a disability is improperly assisted.
The AC goes on to describe most major scenarios and common instances.