Can you explain further? I am mystified by this statement. How can you use HDH(sic)/TRK to intercept with FD OFF? Radar vectors are easier with FD ON....
Hi Tyro,
I'm sorry, HDG not HDH ... just a typing error !
I was referring to an AP OFF + FD + ATHR ON condition: here the A/THR is still in THRUST mode. In THRUST mode the AP pitch mode maintains speed, but as it is not ACTIVE, unwanted thrust excursions may verify while flying manually. It is advisable at this purpose to turn FD's OFF in order to revert from THRUST MODE to SPEED mode, where ATHR maintains a constant speed (selected). Surely radar vectors are easier with FD ON, but if you are being vectored, and flying with AP OFF, FD should also be selected OFF, and FPV alone might help you keeping the path ...
fredgrav