AA62 # 1125,
Re racking the Doppler ? As I recall many times a pull of the boxes (particularly the F comp) and a swift "drop test" on the galley floor usually made the Nav a "happy chappy" again. From a GEs point of view Omega never went wrong, if it did, no fix was available, Loran was, well, loran, and the advent of satnav etc must have been a real bonus for the Navs. Despite the fact that it ultimately led to their demise on Albert. One thing I do know is that all involved on the 'K' did their very best to make it all work, and sometimes made it work 'despite' shortcomings. From a GE point of view a "buggers muddle", but strangely well tamed by the Nav fraternity. Respect as they say.
Smudge