Sydney Terminal Approach Radar
 

What happened to the Sydney Terminal Approach Radar today, around lunchtme, Bk Atis stated YSSY TAR U/S, pls ensure transponers are switched on mode c with the appropriate code.

Any ideas.

Grease & oil change.

ATS C0281/03
PRI RADAR COVERAGE NOT AVBL
WI 50NM SYDNEY DUE SYDNEY TAR NOT AVBL. SSR AVBL
FROM 03 182200 TO 03 210600

It's always nice to check your NOTAMs :}