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Crosswinds And The 737 Question  
User currently offlineAndyinPIT From United States of America, joined Sep 2007, 320 posts, RR: 0
Posted (4 years 5 months 1 week 15 hours ago) and read 3008 times:

Today (2/19) at BWI, they were running west ops (dep 28 land 33L and 33R) and from about 10 am on the winds were anywhere between 290-310 ranging from 15 to 30 kts. There was a US 737 who was raising all hell because he wanted to land on 28. The controller wasn't able to give him 28, unless he was willing to go around to get vectored (and make space for the line of flights waiting to depart). At the time of the incident the winds were being reported 290@19. Now I'm not a pilot, and don't pretend to be one, but is a 19 knot crosswind really that serious? Was it putting the safety of his airplane at risk as he was claiming? Just curious

6 replies: All unread, jump to last
 
User currently offlineavroarrow From Canada, joined Sep 2001, 1045 posts, RR: 0
Reply 1, posted (4 years 5 months 1 week 15 hours ago) and read 2952 times:

Well using this handy online gizmo:
http://www.csgnetwork.com/avxwindfactor.html
The headwind factor would be about 15 kts and the X-wind would be about 12 kts, assuming a rwy heading of 330 and a wind from 290. Although the runway heading is magnetic north while the winds would be reported in true I believe so there is some room for variation with the calculation.
Anyway, I don't know about a 737 but a Cessna 172 can handle 12 kts of X wind so long as the pilot can hold it together.



Give me a mile of road and I can take you a mile. Give me a mile of runway and I can show you the world.
User currently offlineswiftski From Australia, joined Dec 2006, 2701 posts, RR: 2
Reply 2, posted (4 years 5 months 1 week 13 hours ago) and read 2875 times:

Quoting AndyinPIT (Thread starter):
Today (2/19) at BWI, they were running west ops (dep 28 land 33L and 33R) and from about 10 am on the winds were anywhere between 290-310 ranging from 15 to 30 kts. There was a US 737 who was raising all hell because he wanted to land on 28. The controller wasn't able to give him 28, unless he was willing to go around to get vectored (and make space for the line of flights waiting to depart). At the time of the incident the winds were being reported 290@19. Now I'm not a pilot, and don't pretend to be one, but is a 19 knot crosswind really that serious? Was it putting the safety of his airplane at risk as he was claiming? Just curious

What was the rest of the weather like? If braking action is good the 737 had a demonstrated xwind limit of 35kts. If braking action is medium/poor then the limit goes down to 20kts. If it was gusty (you say it was) then the winds are less predictable, and why risk it?


User currently offlinecobra27 From Slovenia, joined May 2001, 1009 posts, RR: 0
Reply 3, posted (4 years 5 months 1 week 12 hours ago) and read 2861 times:

Quoting AndyinPIT (Thread starter):
Was it putting the safety of his airplane at risk as he was claiming? Just curious

Some pilots just have their own stupid habits.
In Slovenia on LJLJ airport sometime they fly over airport and then land on ILS 31, even though the conditions are VFR and there is no traffic. Probably it is mandatory, but sure is stupid and wasteful economically and enviromentally


User currently offlineAndyinPIT From United States of America, joined Sep 2007, 320 posts, RR: 0
Reply 4, posted (4 years 5 months 1 week 12 hours ago) and read 2856 times:

Quoting swiftski (Reply 2):
What was the rest of the weather like?

better than 5000/5, just very windy. And I get the whole why risk it thing, but is it really that much of a risk? I'm just trying to get a pilots perspective on it. He was making it out to be the worst thing in the world, but I've seen much stronger, direct crosswinds.


User currently offlinedw747400 From United States of America, joined Aug 2001, 1257 posts, RR: 1
Reply 5, posted (4 years 5 months 1 week 10 hours ago) and read 2823 times:

Crosswinds in that range are fairly common at BWI on days like today. Departures off of 28, landings on the 33's. When the wind gets up there, it is hardly optimal, but I haven't heard a 737 driver complain about winds like that. Of course, there could be other factors. The runway could be wet from melting snow, the large gust factor could have concerned him, his company op specs might be more restrictive, etc...


CFI--Certfied Freakin Idiot
User currently offlineseven3seven From United States of America, joined Apr 2005, 316 posts, RR: 23
Reply 6, posted (4 years 5 months 1 week 4 hours ago) and read 2745 times:

Im guessing he wanted to save time. When arriving from the north or east they take you all the way around the southeast side of Baltimore for long final to 33L.

He probably just wanted to cut a few minutes off.



My views are mine alone and are not that of any of my fellow employees, officers, or directors at my company
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