When two aircraft are approaching head on, or nearly so,
each pilot should alter his or her course to the right.
An aircraft that is being overtaken has the right-of-way. The
aircraft that is doing the overtaking, whether climbing,
descending, or in level flight, should alter its course to the right
to avoid the other aircraft. The aircraft doing the passing is
responsible for avoiding a collision.
An aircraft on final approach or an aircraft in the process of
landing has the right-of-way over other aircraft in flight or
operating on the surface. When two or more aircraft are
approaching for a landing, the aircraft at the lower altitude has
Table 8-1 -- CFR rules