Hi,fredgrav, if I don't mistake whenever you intend to fly manually you MUST turn off FDs. Correct me If not, please!
Hi Pensador,
the MUST depends on your company's SOP ... however it would advisable to turn FD's OFF whenever you're flying manually, with ATHR active, an off route segment or an interception course (eg. HDH/TRK to intercept, radar vectors, visual approac etc.), this just to avoid unexpected thrust excursions.
