Originally Posted by
Clandestino
if one fails inflight, you canīt do NDB alone approach. If there are no other approaches available, then you divert, unless PiCīs emergency authority is invoked.
LEM,
I think Clandestino has got it. It's certainly how I understand it. I think the JAR OPS section I referred to would relate to all cases as it does not specifically mention dispatch. If you're enroute and one ADF fails you must look for an alternative such as a different approach at the same airport (perhaps a circle) or a diversion. Only Captains emergency authority would allow you to continue a NDB approach with one ADF. As with all uses of this authority, then you really need to be sure you have a good excuse!!
