Commonwealth Numbered Regulations

1988 NO. 158 CIVIL AVIATION REGULATIONS - REG 181

181. Where an aircraft conducting an I.F.R. flight is unable for any reason to
comply with the requirements of paragraph 180 (b), the pilot in command shall:

   (a)  notify Air Traffic Control of the cruising level at which the aircraft
        is flying and of all subsequent changes of that level; and

   (b)  in the event of the risk of a collision with another aircraft which is
        complying with that regulation, give way to that aircraft or fly at a
        cruising level authorised by that regulation until the other aircraft
        is past and clear.