Quote:
Originally Posted by flipper35
5* isn't much of a crab angle, that looked closer to 20*. I could be wrong.
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Yeah, 5* is just the FCOM/FCTM "guideline". Landing in a crab is part of the cert, so it has to be capable of doing it.
So, it could have been closer to 20* (but as mentioned above, it could also be exaggerated due to the camera angle/perspective/zoom). And again, the consequences of not getting a de-crab right in a super-heavy (4x engine) jet, in severe x-wind conditions, are potentially a lot more serious/severe that landing in a crab.
If you are seeing 45+ knot x-wind, the second you de-crab, you are immediately pushed off center. If you over do it, and/or do it a touch early, and/or float it a bit, you could be in the grass. The induced roll also increases the chance of an upwind wing-tip and/or nacelle strike. Doing it a bit late can be bad as well (still kicking the rudder after T/D).