Precision approaches at unmanned airports
I was just wondering whether a pilot could answer the following question for me:
"ASSUMING THAT THE TOWER IS NOT MANNED, HOW CAN A PILOT COMPLETE A PRECISION APPROACH, IF THE ILS IS NOT MONITORED?"
We have just been having a discussion about this and were wondering if it could be done, as where we work, there are airports that have no ATS service, ie late at night, yet the ILS is left on. As I understand it, the ILS is supposed to be monitored, by ATC, to ensure reliability and integrity and that nothing will fail, whilst it is being used. Who does this after hours and therefore, how do you know, as a pilot, that the ILS is radiating correctly?
I would suggest that if the ILS is not monitored, surely one should be doing a non-precision approach?
Thoughts and views would be appreciated.