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Old 3rd Apr 2015, 03:20
  #210 (permalink)  
FO Cokebottle
 
Join Date: Jun 2001
Location: South East Asia
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JanetFlight:

You beat me to it.

Just viewed the link to the video and was going to post it here.

Yes indeed - pretty well puts it into the slumber party category.

Tom Imrich:

That landing would have been entirely routine, with fully using RNP combined with GLS, and use of the auto flight modes already installed and long available to that flight crew.
The GNSS Landing System does not provide for centre line guidance - only the "Back Course" of the ILS or MLS can provide such guidance for an autoland.

What you are praising is LPV. Please read the direct copy and paste from Wikapidia....

"Localizer performance with vertical guidance (LPV) are the highest precision GPS (WAAS enabled) aviation instrument approach procedures currently available without specialized aircrew training requirements, such as required navigation performance (RNP). Landing minima are usually similar to those in an instrument landing system (ILS), that is, a decision height of 200 feet (61 m) and visibility of 1/2 mile.[1] Although precise and accurate, it is still considered a Non-Precision approach. According to the Instrument PTS, you may use a GPS approach down to LPV minimums to substitute a precision approach."

There is NIL centre line guidence for an auto land with a GPS based navigation system. The Pilot's either did not know this fact or had no other option due to poor decision making.

There was nothing routine about this landing.
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