PRIORITY OF LANDING

Priority for landing
  If an aircraft enters an aerodrome traffic circuit without proper authorization, it shall be permitted to land if
its actions indicate that it so desires. If circumstances warrant, aircraft which are in contact with the controller may be
instructed by the controller to give way so as to remove as soon as possible the hazard introduced by such unauthorized
operation. In no case shall permission to land be withheld indefinitely.
  In cases of emergency it may be necessary, in the interests of safety, for an aircraft to enter a traffic circuit
and effect a landing without proper authorization. Controllers should recognize the possibilities of emergency action and
render all assistance possible.
  Priority shall be given to:
 a) an aircraft which anticipates being                 compelled to land because of factors               affecting the safe operation of the
     aircraft (engine failure, shortage of fuel,       etc.);
 b) hospital aircraft or aircraft carrying any        sick or seriously injured persons                      requiring urgent medical attention;
 c) aircraft engaged in search and rescue .         operations; and
 d) other aircraft as may be determined by          the appropriate authority.