ATC equipment problem radar video map. Tech not available to repair.

Attributes
ACN	274896
Time
Date	199406
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : tys
State Reference	TN
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : tys tower : stl
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller radar : 6
ASRS Report	274896
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other

Narrative:

During a thunderstorm we had a wind shift and changed from runway 23 to runway 5. When we changed the radar map we found the runway 5 map to be very weak. The maps depict a 'shelf' which is the departure corridor. Aircraft are kept outside of the shelf on the downwind. The shelf was not depicted on this map. Several airspace boundaries were also missing. As there were no airport facility technicians on duty, they no longer work nights. We were unable to fix the problem. Had there been a tech here the map could have been fixed in less than 5 mins.

Original NASA ASRS Text

Title: ATC EQUIP PROB RADAR VIDEO MAP. TECH NOT AVAILABLE TO REPAIR.

Narrative: DURING A TSTM WE HAD A WIND SHIFT AND CHANGED FROM RWY 23 TO RWY 5. WHEN WE CHANGED THE RADAR MAP WE FOUND THE RWY 5 MAP TO BE VERY WEAK. THE MAPS DEPICT A 'SHELF' WHICH IS THE DEP CORRIDOR. ACFT ARE KEPT OUTSIDE OF THE SHELF ON THE DOWNWIND. THE SHELF WAS NOT DEPICTED ON THIS MAP. SEVERAL AIRSPACE BOUNDARIES WERE ALSO MISSING. AS THERE WERE NO ARPT FACILITY TECHNICIANS ON DUTY, THEY NO LONGER WORK NIGHTS. WE WERE UNABLE TO FIX THE PROB. HAD THERE BEEN A TECH HERE THE MAP COULD HAVE BEEN FIXED IN LESS THAN 5 MINS.

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.