PW207C N1 exceedance

[chr]

Hi

do you have any experience with N1 exceedance (104% , wrong ground check procedure ) I mean if engine need to be taken for overhaul procedure it's gonna be inspection or some components to replace or , it depends ... ?

Regards

[the coyote]

That is a maintenance question that can be answered by a qualified engineer consulting the appropriate maintenance manual. It makes me wonder about compliance if you are choosing to ask the internet instead of just taking the appropriate maintenance action/s for this.

[chr]

just to have an idea quicker than first response will arrive , official mails to maintenance facilities already sent , waiting for replies but I know they are very careful giving any informations before they receive and inspect engine so that's why asked if any had a similar case

[212man]

Originally Posted by chr

just to have an idea quicker than first response will arrive , official mails to maintenance facilities already sent , waiting for replies but I know they are very careful giving any informations before they receive and inspect engine so that's why asked if any had a similar case

I still don't understand - the engine maintenance manual will outline the actions required for exceedances. Typically they will be for varying levels of speed and duration, in this case, or torque or temperature in other cases.

[wrench1]

Originally Posted by chr

do you have any experience with N1 exceedance (104% , wrong ground check procedure ) I mean if engine need to be taken for overhaul procedure it's gonna be inspection or some components to replace or , it depends ... ?

Your mechanic will download the affected engine Data Collection Unit (DCU) via a computer using a Ground Based Software (GBS). Depending on the version GBS he will get a graphical or listing of the engine values during that run and any exceedances. Those figures will determine the appropriate follow up maintenance requirements. However, even with exceedances the PW206/207 are fairly bullet proof and the extent of mx (inspection vs replacement) tends to follow the duration of the exceedance.