Air carrier X received radio station interference on runway 18L localizer frequency 108 pt 3. Ongoing problem reported by several acrs. Radio station frequency FM100.

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Attributes
ACN	294035
Time
Date	199501
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mem
State Reference	TN
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mem
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller military : 3 controller radar : 6
ASRS Report	294035
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
Navigational Aid	Unspecified

Narrative:

While working moderate traffic on runway 18L/right finals at mem airport, several aircraft for runway 18L reporting an interference of the localizer frequency from a radio station. This situation during moderate to heavy traffic caused increased workload to the final controller. Factors were: aircraft were unable to maintain altitude due to turbulence and unable to intercept localizer with a reliable signal until inside 12 DME. Finals at the time were extended 20 mi and more at times which required the runway 18L final controller to conduct surveillance approachs to aircraft until receiving the localizer.

Original NASA ASRS Text

Title: ACR X RECEIVED RADIO STATION INTERFERENCE ON RWY 18L LOC FREQ 108 PT 3. ONGOING PROB RPTED BY SEVERAL ACRS. RADIO STATION FREQ FM100.

Narrative: WHILE WORKING MODERATE TFC ON RWY 18L/R FINALS AT MEM ARPT, SEVERAL ACFT FOR RWY 18L RPTING AN INTERFERENCE OF THE LOC FREQ FROM A RADIO STATION. THIS SIT DURING MODERATE TO HVY TFC CAUSED INCREASED WORKLOAD TO THE FINAL CTLR. FACTORS WERE: ACFT WERE UNABLE TO MAINTAIN ALT DUE TO TURB AND UNABLE TO INTERCEPT LOC WITH A RELIABLE SIGNAL UNTIL INSIDE 12 DME. FINALS AT THE TIME WERE EXTENDED 20 MI AND MORE AT TIMES WHICH REQUIRED THE RWY 18L FINAL CTLR TO CONDUCT SURVEILLANCE APCHS TO ACFT UNTIL RECEIVING THE LOC.

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.