Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Why Are Winds All-of-a-sudden "estimated"?  
User currently offlineLVTMB From United States of America, joined Oct 2004, 399 posts, RR: 0
Posted (10 years 6 months 4 weeks 1 day 17 hours ago) and read 4240 times:

I was wondering ... I noticed that since the storm last week, ATC controllers at MIA and other South Florida airports provide wind heading and speed advises as estimates -- as opposed to actual readings? (Wind estimated at zero eight zero at one zero). What is behind the language change?


5 replies: All unread, jump to last
User currently offlineB744F From Germany, joined Jan 2006, 0 posts, RR: 0
Reply 1, posted (10 years 6 months 4 weeks 1 day 17 hours ago) and read 4228 times:

unstable atmosphere conditions that could lead to sudden wind changes maybe?

User currently offlineKohflot From , joined Dec 1969, posts, RR:
Reply 2, posted (10 years 6 months 4 weeks 1 day 16 hours ago) and read 4204 times:

It might be a technicality. The hurricane likely did some damage to the anemometers on the field. They could be using a backup that's not 'legally' reliable, or the repaired anemometer might not be completely calibrated yet. Stating the winds to be 'estimated' conveys the message that the accuracy of their information can't be guaranteed.

User currently offlineSPREE34 From United States of America, joined Jun 2004, 2415 posts, RR: 8
Reply 3, posted (10 years 6 months 4 weeks 1 day 14 hours ago) and read 4117 times:

Kohflot called it correctly. Broken instrumentation. "Estimated" is the prescribed ATC (US) phraseology in these circumstances.

I don't understand everything I don't know about this.
User currently offlineEchster From United States of America, joined Sep 2004, 403 posts, RR: 0
Reply 4, posted (10 years 6 months 4 weeks 1 day 3 hours ago) and read 4036 times:

It could also be estimated if the wind sensor is not located near the approach end of the runway. For instance, Runway 9 is in use but the wind sensor isn't working. The Runway 27 sensor is operating, so the wind is estimated.

User currently offlineOptionsCLE From United States of America, joined Jun 2004, 467 posts, RR: 0
Reply 5, posted (10 years 6 months 4 weeks 1 day 3 hours ago) and read 4027 times:

Kohflot and SPREE34 have it right. If the certified wind speed/direction indicator is out of service ATC may use a backup that while technically correct is not legally "correct," hence the "estimated."

Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Why So Many Hits All Of A Sudden? posted Mon Nov 3 2003 17:04:44 by Andrewuber
Why Don't We All Just Use The "Piece" System posted Thu Jul 26 2001 19:06:58 by Singapore_Air
Why Are People Afraid Of Flying posted Tue Feb 17 2004 17:41:53 by M&m
Why Are People Scarred Of Flying? posted Wed Apr 26 2000 06:28:37 by Latinplane
Why Do All Canadian Airport Codes Start With "y"? posted Sun Jul 2 2006 17:05:56 by NZ8800
WHY Are Some Aircraft Classified "etops" posted Thu Jul 14 2005 20:35:44 by RAMPRAT980
Why DL Shuttle 738 To PHX All "Y"? posted Thu Feb 17 2005 00:48:58 by AV8AJET
Why Are All Of The AA Flights In PHL Delayed? posted Mon Aug 2 2004 00:59:04 by Tony Lu
All Of You "Airport 79" Fans....good News! posted Tue Oct 28 2003 22:44:18 by Thomasphoto60
"Why JetBlue Lost The Battle Of Hartsfield" posted Mon Oct 27 2003 04:46:44 by SR 103