What disabilities do people face with one arm in public?

Few unsurmountable. An otherwise healthy person who loses one arm does not have much disability, compared to people who are paralyzed and must used a wheelchair, people who are blind, people with no arms, etc... A person can identify jobs or situations that he cannot handle with one arm, and ask for help in those situations. Many jobs and chores do not require two arms, but need practice to do them with just one arm.