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Old 08-29-2007 | 03:54 AM
  #41  
David Gladwin's Avatar
David Gladwin
 
Joined: Feb 2002
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From: CookhamBerkshire, UNITED KINGDOM
Default RE: WAY TOO LOW!

[quote]ORIGINAL: bevar

David,

I would think that just about as many duck under as don't, with a few touchdowns that are before the threshold of the runway. I guess that would a "brick -1" landing.



In that case the guys are idiots. I learned heavy jet flying on the Valiant in 1964 when I was 19, and even then stable approaches were the watchword. It still is. Touch down at the correct speed in the correct place and instantly begin the stopping procedure, worked well then works just as well now and thats what Boeing teach (or certainly did when I did a 737 course in Seattle, I doubt its changed )

In all my years I have NEVER seen a captain in a heavy "duck under" and no copilot would even think of it when I was the captain. If anyone tried it on a check flight I would have instantly failed him. Its potentially dangerous and pointless as ALL runways where operations are authorised can be handled by flying the correct approach, "in the slot" and of all the airports I have operated into with BA and BY, NONE has ever required deviation from the correct landing technique because if non standard techniques such as "ducking under" WERE required they would not be authorised for use.

Sure, some runways , perhaps short, extra slippery when wet, require extra caution such as 40 flap in a 737, autobrake MAX and full reverse, to optimise landing performance, but even then landing distance is factored. I liked to get my wheel braking virtually complete BEFORE I got the the reverted rubber at the end of the runway, particularly when the runway was wet.

Yes, I know that many airlines are increasingly doing things the Boeing (or Airbus) way and why not, they design and build the things, but sometimes variations are required to suit individual airline's operations but all have to be approved by the regulatory authorities.

Anyone want proof about unstable approaches ? Study the QF accident at BKK in 2000, or the recent Garuda 737 accident in Indonesia (threshold crossed at around v-ref +70 ish or the recent TAM airbus landing accident !

Any PROFESSIONAL pilots disagree ?

Finished my coffee, you guys discuss, said my bit. .

regards,

David Gladwin.

PS the shot of the 757 climbing towards the mountains looks fine and real , telephoto lenses can easily produce such a shot and a 757, even at derate 2, climbs extremely well on 2 engines doesn't do too badly on 1 come to think of it !