<strong>Precision approach – Category II operations</strong>
</strong>A Category II operation is a precision instrument approach and landing using ILS or MLS with:
(i) A decision height below 200 ft but not lower than 100 ft; and
(ii) A runway visual range of not less than 300 m.
<strong>2. Decision height
</strong>An operator must ensure that the decision height for a Category II operation is not lower than:
(i) The minimum decision height specified in the AFM, if stated;
(ii) The minimum height to which the precision approach aid can be used without the required visual reference;
(iii) The OCH/OCL for the category of aeroplane;
(iv) The decision height to which the flight crew is authorised to operate; or
(v) 100 ft.
<strong>3. Visual reference
</strong>A pilot may not continue an approach below the Category II decision height determined in accor- dance with subparagraph (d)2. above unless visual reference containing a segment of at least three consecutive lights being the centre line of the approach lights, or touchdown zone lights, or runway centre line lights, or runway edge lights, or a combination of these is attained and can be maintained. This visual reference must include a lateral element of the ground pattern, i.e. an approach lighting crossbar or the landing threshold or a barette of the touchdown zone lighting.
<strong>4. Required RVR
</strong>The lowest minima to be used by an operator for Category II operations are:
RVR for Cat II approach v. DH</strong>
Category II minima
<th>Decision height</th><th>Auto-coupled to below DH
(see Note 1)</th>
Category A, B and C</th><th>RVR/aeroplane
<td>100 ft-120 ft</td><td>300 m</td><td>300 m
(Note 2)/350 m</td>
<td>121 ft-140 ft</td><td>400 m</td><td>400 m</td>
<td>141 ft and above</td><td>450 m</td><td>450 m</td>
Note 1: The reference to “auto-coupled to below DH” in this table means continued use of the automatic flight control system
down to a height which is not greater than 80 % of the applicable DH. Thus airworthiness requirements may, through
minimum engagement height for the automatic flight control system, affect the DH to be applied.
Note 2: 300 m may be used for a Category D aeroplane conducting an auto land.
<a href="http://flightcrewguide.com/wiki/infl-terminology/fail-operational-flight-control-system/" title="Fail-Operational flight control system">Fail-Operational flight control system</a>
<a href="http://flightcrewguide.com/wiki/infl-terminology/fail-passive-flight-control-system/" title="Fail-Passive flight control system">Fail-Passive flight control system</a>
<a href="http://flightcrewguide.com/wiki/inflight/precision-approach-category-operations/" title="Precision approach – Category I operations">Precision approach – Category I operations</a>
<a href="http://flightcrewguide.com/wiki/inflight/precision-approach-category-ii-operations/" title="Precision approach – Category II operations">Precision approach – Category II operations</a>
<a href="http://flightcrewguide.com/wiki/inflight/precision-approach-category-iii-operations/" title="Precision approach – Category III operations">Precision approach – Category III operations</a>