Seems like this particular buoy was out a couple years ago... now it's been out again for the past few weeks. What's up with that? Maintenance? Technical difficulties? When will it be back online?

Seems like this particular buoy was out a couple years ago... now it's been out again for the past few weeks. What's up with that? Maintenance? Technical difficulties? When will it be back online?
Here's the NDBC maintenance schedule. As you can see there is now scheduled date for 44205.
It can sometime take a while:
http://www.ndbc.noaa.gov/ops.shtml