Commonwealth Numbered Regulations

1988 NO. 158 CIVIL AVIATION REGULATIONS - REG 191

191. (1) The pilot in command of an aircraft shall transmit or display the
signals specified in this Division according to the degree of emergency being
experienced.

(2) The signals specified in relation to each successive degree of emergency
may be sent either separately or together for any one degree of emergency.

(3) Nothing in the rules contained in this Division shall prevent the use by
an aircraft in distress of any means at its disposal to attract attention or
make known its position for the purpose of obtaining help.