Archive > Technical discussions

A310-300F problems..

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EHM-1953 Daniel:
OK Javier, sounds good :D will check it out right away :D

EHM-1980 Brian:
hey guys - i found a useful link to a good detailed tutorial about an ILS approach just for those, who like me, aren't too sure how to do one! :o

http://www.toomuchfs.com/tutorials/ILS/tutorial_ils.htm

Hope it helps ;D

EHM-2097 Andrei:
Aha!

Thanks for the explanations Javier, I understand now why I did not notice the "ILS mode on the autopilot shutting off" thing: I never tried to engage "LAND" function that early. I usually engage it when I am really close to the localizer (radial) and the glideslope indicator is "awaken".

Is this habit good or bad?  Time to check the Brian's tutorial to find out !

So about the A310, looks like after all it's a (neat) feature of the panel, to notify when you should engage the "LAND" function. Still among my favorites...

Cheers
Andrei

EHM-1001 Robert:
Well, basically you can activate autoland function further too. When you fly leveled at around 10 nm from the airport, just activate autoland (panel dependant how) and wait until the altitude bug starts coming down, and the autopilot starts acting. If you activate the autoland function when you are already on the glideslope, it can mix the systems for some seconds, surely. ;)

for example on the MD-11 panel there is a "warming" time for the autoland system which is very healthy if you are still leveled during this phase, and not descending already.

EHM-2097 Andrei:
Hi Robert,

I didn't mean to activate autoland after the glideslope bug begins to move down (I even think that would be a little kamikaze-stylish :s ).

What I meant was that when you are really far of the field (~25nm?), the localizer shows the runway direction but the glideslope bug does not even show or is shown in an idle position. Activating the autoland at this time generally leads to an undesired (and, depending on the panel, sometimes brutal) descent.

Thus I always ensure that the glideslope bug is alive - and up - before activating autoland. And I also prefer to do it when I am close to crossing the runway centerline, turning into the localizer by hand to avoid a high angle offset to be handled by the AP (this last precaution could be redundant)

Cheers
Andrei

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