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

A320: difference between LEAP-1A and CFM56-5B4

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

A320: difference between LEAP-1A and CFM56-5B4

Thread Tools
 
Search this Thread
 
Old 29th Mar 2021, 18:23
  #1 (permalink)  
Thread Starter
 
Join Date: Dec 2020
Location: N/A
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
A320: difference between LEAP-1A and CFM56-5B4

Hello

Can any Airbus experts briefly explain the differences, if any, pilot-wise, between the LEAP-1A engine and the CFM56-5B4 ?

Any major difference if one gets trained in a simulator with the CFM56 and then flies a LEAP-1A in real life?

Thank you

boxhauler767 is offline  
Old 29th Mar 2021, 21:03
  #2 (permalink)  
Cak
 
Join Date: Feb 2010
Location: At home
Age: 42
Posts: 106
Likes: 0
Received 0 Likes on 0 Posts
Not really......
Engine start sequemce is a bit different and some limitations
Cak is offline  
Old 29th Mar 2021, 23:06
  #3 (permalink)  
 
Join Date: Mar 2006
Location: USA
Posts: 2,513
Likes: 0
Received 0 Likes on 0 Posts
1. The new engine takes longer to start

2. Normal law blending between flight and ground modes changed slightly

3. Airbus got rid of the cell phone holders

Otherwise, same plane. Not sure why they bothered to change the ATC designation.
Check Airman is offline  
Old 30th Mar 2021, 01:49
  #4 (permalink)  
 
Join Date: Mar 2002
Location: Florida
Posts: 4,569
Likes: 0
Received 1 Like on 1 Post
fuel burn?
FADEC (sic) ?
Instrument messages?
lomapaseo is offline  
Old 30th Mar 2021, 11:12
  #5 (permalink)  
 
Join Date: Oct 2009
Location: Australia the Awesome
Posts: 399
Received 0 Likes on 0 Posts
Originally Posted by Check Airman
1.
3. Airbus got rid of the cell phone holders .
Nooooooooooooooooooooooo😩
No more ashtrays ??
Roj approved is offline  
Old 30th Mar 2021, 19:48
  #6 (permalink)  
 
Join Date: Aug 1998
Location: Ex-pat Aussie in the UK
Posts: 5,791
Received 112 Likes on 54 Posts
Quieter on take off and climb. Cruise and descent noise is mostly airflow noise, so is about the same.

The LEAP engines look cooler - and you can see through them.
Checkboard is online now  
Old 30th Mar 2021, 22:04
  #7 (permalink)  
 
Join Date: Mar 2002
Location: Florida
Posts: 4,569
Likes: 0
Received 1 Like on 1 Post
is this before or after the blades get knackered
lomapaseo is offline  
Old 31st Mar 2021, 22:13
  #8 (permalink)  
 
Join Date: May 2001
Location: London,England
Posts: 1,388
Likes: 0
Received 1 Like on 1 Post
Don't worry "you can go"
Max Angle is offline  
Old 1st Apr 2021, 02:02
  #9 (permalink)  

Only half a speed-brake
 
Join Date: Apr 2003
Location: Commuting not home
Age: 46
Posts: 4,319
Received 3 Likes on 3 Posts
Some say that chopping the thrust has stronger effect compared to the original, requiring an adjustment in flare technique. This would be more pronounced against the IAEs, however.

​​​​​​On top of that the pitch down THS below 27 ft is no longer there...

I realized trying to figure out and cope against the various handling characteristics probably distracts me from making the plane do what I need it to. Comparatively best results achieved by just flying the thing without much thinking at all.

Last edited by FlightDetent; 5th Apr 2021 at 09:08.
FlightDetent 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



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.