PPRuNe Forums - View Single Post - When to continue Approach or Approach Ban!
Old 16th March 2012 | 11:31
  #2 (permalink)  
BugSpeed
 
Joined: Dec 2003
Posts: 105
Likes: 0
From: England
Hi TF,

FAF - Final Approach Fix on a non-precision approach.

FAP - Final Approach Point on a precision approach.

You will not have a FAF on an ILS but the FAP will be represented in the same way on Jepp charts (I think).

EU-OPS1 AD Operating Minimums has the following to say:

"EU-OPS 1 .17

Commencement and Continuation Of An Approach - Approach Ban (EU-OPS1)

An instrument approach may be commenced regardless of the reported RVR/VIS but the appraoch shall not be continued beyond the outer marker or equivalent position, if the reported RVR/VIS is less than the applicable minima...If after passing the outer marker or equivalent positionthe reported RVR/VIS falls below the applicable minimum, the approach may be continued to DA/MDA.

Where no OM or EP exist, the pilot shall make the decsion to continue or abandon the approach before descending below 1000ft AAL on the final approach segment. If the MDA is 1000ft or more AAL the operator shall establish a height for each approach procedure, below which the approach shall not be continued if the RVR/VIS is less than the applicable minimum.

The approach may be continued below DA or MDA and the landing maybe completed provided that the required visual reference is established at DA or MDA and is maintained..."

Tying that all in to the plate below:

a) The FAP marks the start of the final approach segment. In some cases this starts at 4D. In others, like MAN, its at 10D. The decision making bit really only applies to the OM/EP.

b) You would only use 1000' if there was no Outer Marker or EP specified.

c) There is no outer-marker, however, the GS check at 4DME constitutes the equivalent position (1580' AMSL). This is indicated by the GS check inclusion in the Briefing Strip. This therefore means that the decision to use 3D (1010') as the 1000' point would be questionnable. 4D is specified so use it (and indeed we do at MAN).

d) At 4.2D you ask for a check and they come back with "550/550/125". You can continue. At 3D its "125 full length". You can STILL continue because you are beyond the EP. If it is STILL 125 at DA but you can see sufficient elements of the approach lighting system (3 vertical and one lateral), you may continue. If you cant, you go-around, or indeed if the RVR is below minimums AT 4D.

Hope that helps!

BS

Last edited by BugSpeed; 16th March 2012 at 11:56.
BugSpeed is offline