Report on LAPD 12 hour system failure

A report from the General Services Department regarding the April 3rd power failure of LAPD's radio system on Mt. Lee is out.

http://clkrep.lacity.org/onlinedocs/2012/12-0506_misc_5-23-12.pdf

However this doesn't go into why the supply of power from the "Uninterrupted Power Supply" was suddenly interrupted, during a routine test, other then the manufacturer (Emerson Network Power) saying the power supplies need to be properly maintained.