Location of instruments and equipment
85.  An AOC holder must ensure that any instrument or item of equipment that is installed in a large aeroplane —
(a)if the instrument or item of equipment is to be operated or used by a single pilot, the instrument or equipment is installed so that the instrument or item of equipment can be readily seen and operated from that pilot’s normal seating position with the minimum practicable deviation from normal line of sight along the flight path; and
(b)if the instrument or item of equipment is to be operated or used by 2 pilots, the instrument or equipment is installed so that the instrument or item of equipment can be readily seen and operated from each pilot’s normal seating position.