...in case of loss of B hydraulic pressure I think I would call for the "loss of system B NNC" instead of the "trailing edge flap disagree NNC"... Wouldn`t you?
A trailing edge flap disagree can be caused for example, when the FSEU detects an uncommanded motion and it then closes the trailing edge flap bypass valve, so the trailing edge flaps must be conntrolled by the alternate system.
But you are also the opinion that the LEDs can be retracted by the abpve mentioned method. ...why does Boing not regard this fact in its NNC? I mean is there an obvious reason that I overlooked???