Powershell iControl - Retrieving Availability Date and Time.

I'm able to use the Powershell iControl Snap In to return an LTM node's status and number of connections:

$ic.LocalLBNodeAddress.get_object_status("xx.xx.xx.xxx")

However as well as the status I also want the date and time that the node was disabled or enabled on. This is stored somewhere as it's available on the F5 console ... but I can't work out how to get at it via the iControl functionality.

Any ideas?

Many thanks,

Eddie