ZTL controller described frequency loss incident when alternate frequencys had to be used.

Attributes
ACN	715418
Time
Date	200604
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : ztl.artcc
State Reference	GA
Environment
Light	Daylight
Person 1
Affiliation	government : faa
Function	controller : handoff position instruction : instructor
Qualification	controller : radar
Experience	controller limited radar : 4 controller radar : 5 controller time certified in position1 : 5 flight time total : 6
ASRS Report	715418
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	FAA Navigational Facility
Primary Problem	Navigational Facility

Narrative:

On apr/xa/06; the ZTL commerce sector frequency (134.8) had to be taken OTS by the radar specialist. This was due to a severe bleed-over from an unknown approach control frequency. About every 1-2 mins an aircraft could be heard checking on frequency 'climbing to 10000 ft.' the radar specialist was unable to communicate with the aircraft and only the responses to the approach controller could be heard. After attempts to use the back-up frequencys failed to fix the problem; 134.8 was turned off and all surrounding facilities were instructed to use alternate frequencys for commerce.

Original NASA ASRS Text

Title: ZTL CTLR DESCRIBED FREQ LOSS INCIDENT WHEN ALTERNATE FREQS HAD TO BE USED.

Narrative: ON APR/XA/06; THE ZTL COMMERCE SECTOR FREQ (134.8) HAD TO BE TAKEN OTS BY THE RADAR SPECIALIST. THIS WAS DUE TO A SEVERE BLEED-OVER FROM AN UNKNOWN APCH CTL FREQ. ABOUT EVERY 1-2 MINS AN ACFT COULD BE HEARD CHKING ON FREQ 'CLBING TO 10000 FT.' THE RADAR SPECIALIST WAS UNABLE TO COMMUNICATE WITH THE ACFT AND ONLY THE RESPONSES TO THE APCH CTLR COULD BE HEARD. AFTER ATTEMPTS TO USE THE BACK-UP FREQS FAILED TO FIX THE PROB; 134.8 WAS TURNED OFF AND ALL SURROUNDING FACILITIES WERE INSTRUCTED TO USE ALTERNATE FREQS FOR COMMERCE.

Data retrieved from NASA's ASRS site as of January 2009 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.