CFM56-5B4 Max Life Time
Thread Starter
Joined: Mar 2006
Posts: 213
Likes: 0
From: kuwait
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
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
Joined: Apr 2008
Posts: 91
Likes: 0
From: Minneapolis Mn USA
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....
"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....
Joined: Jan 2008
Posts: 47
Likes: 0
From: CO
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.
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.
