Originally Posted by
notEnuf
I don't think deferral has anything to do with operating a subfleet with different equipment. But even if it did, the MEL is valid for what, 90 days?
Not that it would literally be on MEL or not. But that there is a rigorous debate taking place about what to do about it if it’s not ready when then plane is. The item is MEL-able, so it can clearly fly without it. However, it’s the left seat philosophical standard to use it often and there is a debate right now if it’s ok to simply unleash a rapidly growing sub category with an operationally philosophical difference that significant. I would be OK with it but it’s not my call obviously.