Originally Posted by
Captainkelly
Hi, can you elaborate on what do you mean by staying within the heading bug for roll correction? Is this below 1000ft? Also does it mean that the roll correction should be within the small inverted bug triangle?
How to place the track line over the runway threshold? Don't we select the ILS track using the track/hdg knob?
Hi Captain, above 1000’ you can afford bigger and more effective corrections, below 1000’ you reduce the scope of corrections to avoid destabilising the approach. A good rule of thumb is, one you’ve set your blue bug with ILS inbound track, to correct maintaining the blue line within the span of the bird’s wing when above 1000’, but to limit corrections to the circle (body) of the bird for corrections below 1000’.
So for example if you are left of the localiser at 800’, turn right maintaining the blue bug within the body of the bird and then wait, while scanning the LOC coming in.
for the second bit you use the ND in nav, since the published rwy track inbound doesn't always work in real life (magnetic differences, IRS drift etc). When the projection of the Green line on your ND (corresponding to your actual track) is aligned with the rwy and LOC is spot on, that’s the track you want to keep (you can adjust the blue bug accordingly)