Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

B737 flap question

Tech Log The very best in practical technical discussion on the web

B737 flap question

Old 26th Jan 2008, 12:41
  #1 (permalink)  
Thread Starter
Join Date: Mar 2004
Location: north pole
Posts: 6
Likes: 0
Received 0 Likes on 0 Posts
B737 flap question

I wonder if you select flaps 40 a few knots below placard speed, will they immediately come out, or will they delay until passing 153 (-300/500)?. If this is the case, it is somewhat similar to the logic that retracts them at 158, and re-extend at 153.

Schwartzvogel is offline  
Old 26th Jan 2008, 12:51
  #2 (permalink)  
Join Date: Aug 2001
Location: Europe
Posts: 117
Likes: 0
Received 0 Likes on 0 Posts
As far as I remember (some years now), they will come out immediately. I believe the flaps need to be set at 40 for the Flap Load Relief function to be armed.
dolly737 is offline  
Old 27th Jan 2008, 07:44
  #3 (permalink)  
Join Date: Dec 2006
Location: Established on the LOC
Posts: 18
Likes: 0
Received 0 Likes on 0 Posts
They will come out ! Though on the 300/500 you won't be using F40 too often... (Unless it's CAT 3 or very slippery/icy out there or if you have a significant tailwind of course...) I wouldn't worry about the flap load relief too much on the 300/500 mainly because with the landing weights and corresponding Vref's it shouldn't mean a problem. At least I have never experienced it anyway.
CharterJake is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.