ICAO Doc 4444
6.7.3.4 REQUIREMENTS AND PROCEDURES FOR DEPENDENT PARALLEL APPROACHES

6.7.3.4.1 Dependent parallel approaches may be conducted to parallel runways provided:

a) the runway centre lines are spaced by the distance specified in Annex 14, Volume I;
b) the aircraft are vectored to intercept the final approach track;
c) suitable surveillance radar with a minimum azimuth accuracy of 0.3 degrees (one sigma) and update period of 5 seconds or less is available;
d) ILS and/or MLS approaches are being conducted on both runways;
e) aircraft are advised that approaches are in use to both runways (this information may be provided through the ATIS);
f) the missed approach track for one approach diverges by at least 30 degrees from the missed approach track of the adjacent approach; and
g) approach control has a frequency override capability to aerodrome control.