Hi,
I have question in addition to your query. If we have fault but could not identify its detail and/or without associated message, can we apply MEL which is for one higher assembly/unit?
For example:
ex. 1) If we have fault in detail parts in APU, but could not identify which part was failed, can we deactivate entire APU and apply MEL for entire APU itself?
ex. 2) If we have failure in AIR PACK 1 FAULT without associated fault message (so we could not indentify which detail part was failed, temp sensor or valve etc..), can we apply MEL for entire AIR PACK 1 itself?
If you know some published buide line from authority or aircraft manufacturer, it is very happy for us if you would send the link for my understandings.
Thank you
