Caz
Got me there I'm afraid. I confess I don't know what was going on on the flight deck or what they could see. I bow in awe to those who do.
As for the clearances of avionic equipment, I'm simply passing on what MoD provided under FoI. That is, they ignored the regulations by not clearing the equipment for use, and all that this entails, before issuing the RTS. That breaks so many regulations you could write a book; and constitutes gross negligence. But I'm sure the ACAS of the day will explain this for the first time if interviewed by Lord Philip.
Best wishes