Wikiposts
Search

Notices
Engineers & Technicians In this day and age of increased CRM and safety awareness, a forum for the guys and girls who keep our a/c serviceable.

Rings on 757 Noses

Thread Tools
 
Search this Thread
 
Old 5th March 2007 | 09:17
  #1 (permalink)  
Thread Starter
 
Joined: Jan 2007
Posts: 7
Likes: 0
From: Southampton
Rings on 757 Noses

Could someone please tell me the reason why BA 757's and some 737's have a black ring painted on the nose/radome?

Thanks

CG
Colonel Gimble is offline  
Reply
Old 5th March 2007 | 10:02
  #2 (permalink)  
 
Joined: Jul 1999
Posts: 3,040
Likes: 0
From: 58-33N. 00-18W. Peterborough UK
They were (are?) trials aircraft for the Micro-Wave Landing System. MLS.
forget is offline  
Reply
Old 9th March 2007 | 07:40
  #3 (permalink)  
Thread Starter
 
Joined: Jan 2007
Posts: 7
Likes: 0
From: Southampton
Thanks for that!
Colonel Gimble is offline  
Reply
Old 9th March 2007 | 11:41
  #4 (permalink)  
 
Joined: Jun 2005
Posts: 31
Likes: 0
From: Hants, UK
I recall that -KK (757) and -WB (767) were used in the MLS trials but don't recall any 737's. Was there anything else that they may have been painted up for?
Cheers, NM
NavMonkey is offline  
Reply
Old 9th March 2007 | 13:02
  #5 (permalink)  

Pilots' Pal
 
Joined: Nov 1998
Posts: 1,158
Likes: 0
From: USA
I thought MLS trial aircraft had "C of G" type patterns on the radome. Last saw KK with DHL; MLS antenna was still fitted.
Bus429 is offline  
Reply
Old 9th March 2007 | 13:23
  #6 (permalink)  
 
Joined: May 2006
Posts: 366
Likes: 0
From: UK/Switzerland
What is the benefit in using Micro wave signals?
Felix Saddler is offline  
Reply
Old 9th March 2007 | 14:53
  #7 (permalink)  
 
Joined: May 2006
Posts: 118
Likes: 0
From: Craggy Island....the west is best
MLS signals can be bent.....around corners or over terrain. No need for a ten mile straight ILS
3bars is offline  
Reply
Old 9th March 2007 | 15:03
  #8 (permalink)  
 
Joined: Jul 1999
Posts: 3,040
Likes: 0
From: 58-33N. 00-18W. Peterborough UK
Here............http://en.wikipedia.org/wiki/Microwave_Landing_System
forget is offline  
Reply
Old 10th March 2007 | 10:27
  #9 (permalink)  
 
Joined: Dec 2006
Posts: 236
Likes: 1
From: belgium
BIKK still has the MLS antennas, but nothing is connected to it.
Piper19 is offline  
Reply
Old 11th March 2007 | 09:58
  #10 (permalink)  
 
Joined: Jun 2005
Posts: 147
Likes: 0
From: 20000 leagues under the sea
MLS trial aircraft had the black/white quater filled circle like a CofG cymbol as stated.
the black ring i beleive is for connecting the bonding strips within the radome.
sinkingship is offline  
Reply

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



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

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.