Search our Database

Precision approach – Category I operations

Revision for “Precision approach – Category I operations” created on February 12, 2019 @ 01:49:41 [Autosave]

Precision approach – Category I operations
<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">
<th>Decision height (Note 7)</th>
<th>Facilities/RVR (Note 5)</th>
(Notes 1 and 6)</th>
(Notes 2 and 6)</th>
(Notes 3 and 6)</th>
(Notes 4 and 6)</th>
<td>200 ft</td>
<td>550 m</td>
<td>700 m</td>
<td>800 m</td>
<td>1000 m</td>
<td>201-250 ft</td>
<td>600 m</td>
<td>700 m</td>
<td>800 m</td>
<td>1000 m</td>
<td>251-300 ft</td>
<td>650 m</td>
<td>800 m</td>
<td>900 m</td>
<td>301 ft and above</td>
<td>800 m</td>
<td>900 m</td>
<td>1000 m</td>
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, &lt;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 title="Aerodrome Operating Minima (Inflight)" href="">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 title="Fail-Operational flight control system" href="">Fail-Operational flight control system</a>
<a title="Fail-Passive flight control system" href="">Fail-Passive flight control system</a>
<a title="Precision approach – Category I operations" href="">Precision approach – Category I operations</a>
<a title="Precision approach – Category II operations" href="">Precision approach – Category II operations</a>
<a title="Precision approach – Category III operations" href="">Precision approach – Category III operations</a>

OldNewDate CreatedAuthorActions
February 12, 2019 @ 01:49:41 [Autosave]Captain Bass
February 12, 2019 @ 01:49:36Captain Bass
October 15, 2013 @ 18:36:55Captain Bass
October 7, 2013 @ 15:41:54Captain Bass
September 19, 2013 @ 06:50:02Captain Bass
September 19, 2013 @ 06:43:43Captain Bass
The presented material is for training purpose only!