Twr giving winds
04-19-2009 | 09:25 AM
#11
Snakes & Nape
Joined: Nov 2006
Posts: 775
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From: B-767 Captain
Right on the Money
The tower issued winds are the winds at the surface, i.e., across the runway. They are legally required for take-off and landing in most commercial operations.
Depending on the MFD/FMC system, one may not even get a "wind read out" until airborne and I wouldn't trust it until I had at least a few thousand feet of altitude.
Just my two cents...devalued to $ .001120094 on Friday's close.
G'Day Mates
04-30-2009 | 12:52 PM
#14
Gets Weekends Off
Joined: Mar 2008
Posts: 13,843
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From: FAA 'Flight Check'
USMCFLYR
05-02-2009 | 01:26 PM
#16
Gets Weekends Off
Joined: Feb 2006
Posts: 490
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Aren't MFD winds derived from nav data anyway, i.e., the glass performing many E6B type calculation per second? In other words it's based on the GPS/VOR/etc data and air speed, ground speed, etc...Based on the past, not what's on the runway in front of you.
05-02-2009 | 04:15 PM
#17
Line Holder
Joined: Mar 2008
Posts: 38
Likes: 0
From: Retired
PFD winds
On our older cockpits (1980s vintage), the winds are averaged over 30 second time blocks, and may not represent what's in front of you. For our older gear, without any predictive capability, it is essentially the wind you just flew through. Tower winds are always legal winds.
05-07-2009 | 12:51 PM
#18
Line Holder
Joined: Apr 2007
Posts: 946
Likes: 14
From: 747 FO
That cleared for take-off call will be reviewed if any metal gets bent and if you exceeded your tail wind or cross wind limitation on take-off then it is only the PC's fault for trying to take that aircraft into the air.
06-04-2009 | 06:57 AM
#19
New Hire
Joined: May 2009
Posts: 3
Likes: 0
From: G550/450/IV
Fellow aviators,
If the aircraft taking off is military the winds report is required. If there is no ATIS, the winds report is required. If you tell Ground/Tower you "have the numbers", or provide them with the correct ATIS code, and there is no significant change the winds, report is not required.
Personally, I take all information as nice to know and react to what the aircraft is doing during landing/take-off. I have seen many instances of incorrect technique being used because of the anticipated winds!
Hope this helps.
If the aircraft taking off is military the winds report is required. If there is no ATIS, the winds report is required. If you tell Ground/Tower you "have the numbers", or provide them with the correct ATIS code, and there is no significant change the winds, report is not required.
Personally, I take all information as nice to know and react to what the aircraft is doing during landing/take-off. I have seen many instances of incorrect technique being used because of the anticipated winds!
Hope this helps.
06-04-2009 | 07:06 AM
#20
Gets Weekends Off
Joined: Dec 2007
Posts: 992
Likes: 0
From: retired
I find that, at least in the pattern, that the smoke/dust blowing off the fields (at least in the central valley of CA) are more accurate than my derived winds in the aircraft. I suppose using the wind sock, the trees and the waving fields of agriculture work well too
USMCFLYR
USMCFLYR
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