RPTR CLAIMS RADIOS WENT DEAD WITH VSCS EQUIP INDICATING VHF AND UHF XMITTER ON STANDBY ALONG WITH THE UHF RECEIVER. THE VHF RECEIVER INDICATED ON THE MAIN EQUIP. RPTR COULD NOT CHANGE TO MAIN VHF XMITTER. VSCS EQUIP WAS OTS FOR 7 MINS.

Date: 1997-03

Anomalies: other-unspecified

Synopsis

RPTR CLAIMS RADIOS WENT DEAD WITH VSCS EQUIP INDICATING VHF AND UHF XMITTER ON STANDBY ALONG WITH THE UHF RECEIVER. THE VHF RECEIVER INDICATED ON THE MAIN EQUIP. RPTR COULD NOT CHANGE TO MAIN VHF XMITTER. VSCS EQUIP WAS OTS FOR 7 MINS.

Narrative

I WAS WORKING SECTOR 41 AT ZOA. MY RADIOS WENT DEAD AND I NOTICED THAT THE 125.85 XMITTER; 323.0 XMITTER AND RECEIVER WERE SHOWING 'S' FOR STANDBY. I ATTEMPTED TO CHANGE THE 125.85 XMITTER (VIA VSCS) TO 'MAIN' BUT NOTHING HAPPENED. I WAS UNABLE TO COMMUNICATE WITH ANY ACFT FOR 7 MINS. ALTHOUGH IT WAS NOT BUSY AT THE TIME; IF IT HAD BEEN SAFETY WOULD HAVE BEEN IN THE HANDS OF THE PLTS AND TCASII ONLY. MY RADIOS RETURNED FOR NO APPARENT REASON BUT THE PLTS THEN COMPLAINED THAT IT SOUNDED LIKE A TELEPHONE WAS RINGING WHEN I XMITTED ON 'MAINS' OR 'STANDBY.' BUEC IS OK. THIS HAS HAPPENED TO OTHER CTLRS AT SECTOR 41 BEFORE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT AT TIME THE RADIOS WENT DEAD; THE VSCS DISPLAY INDICATED OPPOSITE OF WHAT HE HAD BEEN USING; IE; VHF XMITTER AND UHF XMITTER AND RECEIVER ON MAIN AND THE VHF RECEIVED ON STANDBY. RPTR RECALLED THAT THE RECEIVERS WERE WORKING BUT THE XMITTERS WERE OTS. RPTR SAID THAT HE UNDERSTANDS THAT MAINT WAS ADVISED OF THE PROB WAS INDICATED THAT THEY DO NOT KNOW WHAT CAUSED IT. RPTR DOES NOT FEEL THERE HAS BEEN MUCH DISCUSSION OF THIS BY THE FACILITY MGMNT OR OF ANY POTENTIAL RESOLVE TO THE PROB.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.