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.

VU Numbering System Airbus

Old 18th Sep 2020, 11:16
  #1 (permalink)  
Thread Starter
 
Join Date: Mar 2013
Location: 36,000'
Posts: 119
VU Numbering System Airbus

What is the "VU" numbering system used in Airbus cockpits for panel numbering, like 424VU, 22VU, 425VU
B737NG_Pilot is offline  
Old 19th Sep 2020, 14:49
  #2 (permalink)  
 
Join Date: Nov 2011
Location: langerland
Posts: 38
Hi vu is what airbus call fictious panels.This means that the panel has switches circuit breakers for more than one piece of equipment. Ie the fuel panel has switches and connectors for tank pumps. Connectors ,switches and circuit breakers are designated Vc. Main wire routes are Vb. Therminal blocks are Vt. Pressure seals are Vs. There is a long list in the chapters 90 to 94 as far as I can remember in the wiring manuals. Also in equipment manual. There is alot of them.
i am a bee too is offline  
Old 20th Sep 2020, 06:37
  #3 (permalink)  
 
Join Date: Jun 2007
Location: UK
Age: 66
Posts: 187
You may replace parts on a VU panel, lamps, switches etc. If the panel does not have a VU number in the front RH topside, you have to replace this non-Airbus part. Fire, comms, etc will not have a VU ident.
Terry McCassey is offline  
Old 20th Sep 2020, 10:18
  #4 (permalink)  
Thread Starter
 
Join Date: Mar 2013
Location: 36,000'
Posts: 119
Originally Posted by Terry McCassey View Post
You may replace parts on a VU panel, lamps, switches etc. If the panel does not have a VU number in the front RH topside, you have to replace this non-Airbus part. Fire, comms, etc will not have a VU ident.
Hi Terry,

Thanks for your reply.

Just to check if I have understood it right, panels, which have a VU number (are airbus manufactured parts and components/switches on the panel can be replaced individually). The Panels without VU numbers are non airbus manufactured parts, and the entire panels needs to be replaced.

B737NG_Pilot is offline  
Old 20th Sep 2020, 10:21
  #5 (permalink)  
Thread Starter
 
Join Date: Mar 2013
Location: 36,000'
Posts: 119
Thanks I_am_a_bee_too

So panels with VU numbers have more than one equipment attached.. ?
B737NG_Pilot is offline  
Old 20th Sep 2020, 11:39
  #6 (permalink)  
 
Join Date: Nov 2011
Location: langerland
Posts: 38
Hi for example the external lights vu panel has switches for individual landing lights, nav lights,taxi light, take off light ect. all considered indivdual systems.
i am a bee too is offline  
Old 21st Sep 2020, 19:26
  #7 (permalink)  
 
Join Date: Jun 2007
Location: UK
Age: 66
Posts: 187
Originally Posted by B737NG_Pilot View Post
Hi Terry,

Thanks for your reply.

Just to check if I have understood it right, panels, which have a VU number (are airbus manufactured parts and components/switches on the panel can be replaced individually). The Panels without VU numbers are non airbus manufactured parts, and the entire panels needs to be replaced.
That is correct. You will see a small panel number XXXVU in small blue lettering. If no VU number then the panel assy cannot be repaired and none of its components are replaceable, you are unlikley to find anything in the CMM for these items. Non VU identified panels are generally from the vendor.

Hope this helps
Terry McCassey is offline  
Old 22nd Sep 2020, 10:10
  #8 (permalink)  
Thread Starter
 
Join Date: Mar 2013
Location: 36,000'
Posts: 119
Originally Posted by Terry McCassey View Post
That is correct. You will see a small panel number XXXVU in small blue lettering. If no VU number then the panel assy cannot be repaired and none of its components are replaceable, you are unlikley to find anything in the CMM for these items. Non VU identified panels are generally from the vendor.

Hope this helps

thanks Terry
B737NG_Pilot is offline  
Old 22nd Sep 2020, 10:12
  #9 (permalink)  
Thread Starter
 
Join Date: Mar 2013
Location: 36,000'
Posts: 119
Thank you for replying

why doesn’t the fire panel have a VU number
B737NG_Pilot is offline  
Old 22nd Sep 2020, 15:01
  #10 (permalink)  
 
Join Date: Jun 2007
Location: UK
Age: 66
Posts: 187
Originally Posted by B737NG_Pilot View Post
Thank you for replying

why doesn’t the fire panel have a VU number
Likely because it's considered a critical system - and they don't want us messing with it unecessarily. Easier and safer to change the whole panel.
Terry McCassey 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 - Do Not Sell My Personal Information -

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.