ATC equipment problem radar power source problem. Secondary radar only.

Attributes
ACN	266420
Time
Date	199401
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : clt
State Reference	NC
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : clt
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	266420
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
Situations
Navigational Aid	Unspecified

Narrative:

Lost 1 channel's high voltage and the other channel had been released to maintenance. For 4 mins charlotte was secondary radar only. Later in the day radar channel a went into alarm and for an unknown reason dropped offline. The ASR 9 WX video control also went offline. The maintenance people were in the building at the time but offered no reason why it went offline. Charlotte definitely has problems with the ASR 9. We need to have our system evaluated and a determination made on what to do to fix our continuous problems.

Original NASA ASRS Text

Title: ATC EQUIP PROB RADAR PWR SOURCE PROB. SECONDARY RADAR ONLY.

Narrative: LOST 1 CHANNEL'S HIGH VOLTAGE AND THE OTHER CHANNEL HAD BEEN RELEASED TO MAINT. FOR 4 MINS CHARLOTTE WAS SECONDARY RADAR ONLY. LATER IN THE DAY RADAR CHANNEL A WENT INTO ALARM AND FOR AN UNKNOWN REASON DROPPED OFFLINE. THE ASR 9 WX VIDEO CTL ALSO WENT OFFLINE. THE MAINT PEOPLE WERE IN THE BUILDING AT THE TIME BUT OFFERED NO REASON WHY IT WENT OFFLINE. CHARLOTTE DEFINITELY HAS PROBS WITH THE ASR 9. WE NEED TO HAVE OUR SYS EVALUATED AND A DETERMINATION MADE ON WHAT TO DO TO FIX OUR CONTINUOUS PROBS.

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.