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

A320 PTU Inhibited?

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

A320 PTU Inhibited?

Old 22nd Apr 2023, 22:28
  #1 (permalink)  
Thread Starter
 
Join Date: Apr 2023
Location: Pompano Beach, FL.
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
A320 PTU Inhibited?

Hello, new user here and I'll try to keep it short: Why is the PTU inhibited during the first engine start?

I recently bought flightsimlabs A320 and love it! So now I am digging into the systems.


Thanks!
JumpmanJr is offline  
Old 23rd Apr 2023, 00:22
  #2 (permalink)  
 
Join Date: Sep 2001
Location: Blighty
Posts: 788
Received 87 Likes on 22 Posts
Reduced load on the engine driven pump maybe.
HOVIS is offline  
Old 23rd Apr 2023, 07:04
  #3 (permalink)  
 
Join Date: Apr 2023
Location: Mumbai
Age: 19
Posts: 69
Likes: 0
Received 1 Like on 1 Post
I guess, even when the cargo door is opening via the help of yellow elec pump, it's inhibited. (Provided both ENG's Off)

Last edited by Zar_1; 23rd Apr 2023 at 19:10.
Zar_1 is offline  
Old 23rd Apr 2023, 13:47
  #4 (permalink)  
Thread Starter
 
Join Date: Apr 2023
Location: Pompano Beach, FL.
Posts: 5
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by HOVIS
Reduced load on the engine driven pump maybe.
That makes sense. I guess you wouldn't want two sources of pressure feeding a system at one time.

Thanks for the reply!
JumpmanJr is offline  
Old 24th Apr 2023, 07:36
  #5 (permalink)  
 
Join Date: Jun 2007
Location: Wanderlust
Posts: 3,393
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by JumpmanJr
Hello, new user here and I'll try to keep it short: Why is the PTU inhibited during the first engine start?

I recently bought flightsimlabs A320 and love it! So now I am digging into the systems.


Thanks!
First engine start everything that is rotating takes it's power from APU or external cart. If PTU is not inhibited the EDP will impose more load on the pneumatics provided by that source and may affect N2 rotation. After first engine start the EDP of that engine is will provide power to PTU so doesn't affect 2nd engine start.
vilas 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.