<strong>Precision approach — Category I operations</strong>

<strong>1. General

</strong>A Category I operation is a precision instrument approach and landing using ILS, MLS or PAR with a decision height not lower than 200 ft and with a runway visual range not less than 550 m.

<strong>2. Decision height

</strong>An operator must ensure that the decision height to be used for a Category I precision approach is not lower than:

(i) The minimum decision height specified in the Aeroplane Flight Manual (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; or

(iv) 200 ft.

<strong>3. Visual reference

</strong>A pilot may not continue an approach below the Category I decision height, determined in accor- dance with subparagraph (c)2. above, unless at least one of the following visual references for the intended run- way is distinctly visible and identifiable to the pilot:

(i) Elements of the approach light system;

(ii) The threshold;

(iii) The threshold markings;

(iv) The threshold lights;

(v) The threshold identification lights;

(vi) The visual glide slope indicator;

(vii) The touchdown zone or touchdown zone markings;

(viii) The touchdown zone lights; or

(ix) Runway edge lights.

<strong>4. Required RVR</strong>

The lowest minima to be used by an operator for Category I operations are:

<strong>Table 5

RVR for Cat I approach v. facilities and DH</strong>

Category I minima

<table border="1">

<tr>

<th>Decision height (Note 7)</th><th>Facilities/RVR (Note 5)</th>

</tr>

<tr>

<th></th><th>Full

(Notes 1 and 6)</th><th>Interm

(Notes 2 and 6)</th><th>Basic

(Notes 3 and 6)</th><th>Nil

(Notes 4 and 6)</th>

</tr>

<tr>

<td>200 ft</td><td>550 m</td><td>700 m</td><td>800 m</td><td>1000 m</td>

</tr>

<tr>

<td>201-250 ft</td><td>600 m</td><td>700 m</td><td>800 m</td><td>1000 m</td>

</tr>

<tr>

<td>251-300 ft</td><td>650 m</td><td>800 m</td><td>900 m</td><td>1200</td>

</tr>

<tr>

<td>301 ft and above</td><td>800 m</td><td>900 m</td><td>1000 m</td><td>1200</td>

</tr>

</table>

Note 1: Full facilities comprise runway markings, 720 m or more of HI/MI approach lights, runway edge lights, threshold lights and runway end lights. Lights must be on.

Note 2: Intermediate facilities comprise runway markings, 420-719 m of HI/MI approach lights, runway edge lights, threshold lights and runway end lights. Lights must be on.

Note 3: Basic facilities comprise runway markings, <420 m of HI/MI approach lights, any length of LI approach lights, runway edge lights, threshold lights and runway end lights. Lights must be on.

Note 4: Nil approach light facilities comprise runway markings, runway edge lights, threshold lights, runway end lights or no lights at all.

Note 5: The above figures are either the reported RVR or meteorological visibility converted to RVR in accordance with para- graph (h).

Note 6: The Table is applicable to conventional approaches with a glide slope angle up to and including 4° (degree).

Note 7: The DH mentioned in the Table 5 refers to the initial calculation of DH. When selecting the associated RVR, there is no need to take account of a rounding up to the nearest 10 feet, which may be done for operational purposes, (e.g. conversion to DA).

<strong>5. Single pilot operations</strong>

For single pilot operations, an operator must calculate the minimum RVR for all approaches in accordance with the <a href="http://flightcrewguide.com/wiki/inflight/aerodrome-operating-minima/" title="Aerodrome Operating Minima (Inflight)">Aerodrome operating minima</a> and this Appendix. An RVR of less than 800 m is not permitted except when using a suitable autopilot coupled to an ILS or MLS, in which case normal minima apply. The Decision Height applied must not be less than 1,25 x the minimum use height for the autopilot.

<strong>6. Night operations</strong>

For night operations at least runway edge, threshold and runway end lights must be on.

Source: EU-OPS

See also:

<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>