CFM56-5B4 Max Life Time
 

Hello...

i am looking for this info since a long time ...

i made my home work and googled for the result but couldn't find numbers of hours or cycles.

i am looking for numbers i.e max hours or cycles.

i know one of our aircraft has loged around 12000 hours of engine life and got replaced with new engines ( 2 engines ).is this normal ....or it might be a technical problem led the company to choose to replace the engines ?

thanks

From the Type Certificate Data Sheet

"Life limitations are provided in the A319/A320/A321 Maintenance Planning Document, Section 9 “Airworthiness
Limitation Section”, Sub-Sections 9-1-2 and 9-1-3 - Approved by DGAC.

"I know one of our aircraft has logged around 12000 hours of engine life and got replaced with new engines ( 2 engines ).is this normal "

If you also look in the AMM Chapter 5 Limits you might find the relevant data for engine life limited parts, otherwise check with your maintenance program/planning group or local Airbus rep.

Hope this helps....

great help indeed...

Thanks a million.

It is right to count in "Cycles" rather than in "Flight Hours".

You must search the limiter (ie the parts with the lowest life limit) in the HPT rotor. For a CFM56-5B4, it depends on the Part Number of the HPT Disk, HPT Front Air Seal, HPT Front Shaft and HPT Rear Shaft.

12000 hours sounds good if the Flight Hour/Cycle ratio is above 1.