I think that Xrayalpha's interpretation was the one originally intended but, not for the first time, the CAA have drafted the requirement so badly that Ifitaintboeing's interpretation is equally valid.
I've written to the new GA unit and asked this question, but so far, no response.
Unless we can get an 'official' view on this, you can take your choice, and wait for an accident to find out who is right.
MJ
