What is the secrecy about?
Facts:
-The runway lights at DARWIN (YPDN) failed in the early evening of Friday
22 May 09.
-The back up power supply did not do it's job
-The failure lasted for over an hour according to a source.
There was no legal requirement to hold an alternate as the weather was fine etc
It is rather concerning that this can occur at an international airport, and one can only hope that a detailed investigation will examine the various aspects of the incident and ensure it won't happen again.
With the RAAF involved I somehow doubt that.