ATC equipment problem radar scope and backup darc failed.

Attributes
ACN	219176
Time
Date	199208
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zoa
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : 1b7
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 1
ASRS Report	219176
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	faa : investigated
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other

Narrative:

On aug/xx/92 the pvd (radar scope) at sector 34, ZOA, went blank. It was as if it was just switched off. The scope still had high voltage and the associate position was still functional. The darc backup system was not functional. At the time of the incident there were 4 aircraft in the sector. 3 commercial passenger jets and 1 private turboprop. I worked off the adjacent sector's scope and 10-12 additional aircraft entered and departed the sector.

Original NASA ASRS Text

Title: ATC EQUIP PROBLEM RADAR SCOPE AND BACKUP DARC FAILED.

Narrative: ON AUG/XX/92 THE PVD (RADAR SCOPE) AT SECTOR 34, ZOA, WENT BLANK. IT WAS AS IF IT WAS JUST SWITCHED OFF. THE SCOPE STILL HAD HIGH VOLTAGE AND THE ASSOCIATE POS WAS STILL FUNCTIONAL. THE DARC BACKUP SYS WAS NOT FUNCTIONAL. AT THE TIME OF THE INCIDENT THERE WERE 4 ACFT IN THE SECTOR. 3 COMMERCIAL PAX JETS AND 1 PRIVATE TURBOPROP. I WORKED OFF THE ADJACENT SECTOR'S SCOPE AND 10-12 ADDITIONAL ACFT ENTERED AND DEPARTED THE SECTOR.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.