PPRuNe Forums - View Single Post - Adding a 'Couple-a-Knots'
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Old 26th May 2018, 17:59
  #24 (permalink)  
Check Airman
 
Join Date: Mar 2006
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Originally Posted by FlightDetent
Exactly the point. Vls=Vref=Vapp.
+ 1/3 of the reported head wind for the reduction in of its speed in the boundnary layer below the anemometer height
or + 5 kts if A/THR used (to allow for its speed drops not expected to exceed -5 kts)

So, if the displayed Vfms is Vls+3, without really knowing which is correct, why add 2 kts? Worst case it is still Vref+3.

@CheckAMN: all good until you start to develop a "long landing standard" technique. Then one day going into a short-ish place people opt for a "short landing technique" (which should have not need to exist in the first place!!!). And it scary to watch them fail their first attempt at executing what they did not practice before, and actually, they have no idea or guidance what it should be like.

But as long as the shortest LDA is 2500 m, the discussion is admittedly academic. Unless one's ready to see the broader views presented by safetypee above. Similar to going for 3 red's on the PAPIs, boss.
Well my point is that you do know which one is correct. The PFD Vls is correct. I'm not following your argument. We didn't have any short/long landing technique. As I stated before, if the runway length is limiting, I'm happy to let the Vapp sit on top of Vls. We're not going to die- mind the pitch though
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