DC9 flight crew concerned with dtw ATCT local control frequency interference.

Attributes
ACN	535988
Time
Date	200201
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	msl bound lower : 640 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dtw.tower
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 160 flight time total : 8600 flight time type : 1240
ASRS Report	535988
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	faa : investigated
Supplementary
Problem Areas	Maintenance Human Performance ATC Human Performance Navigational Facility
Primary Problem	Navigational Facility
Air Traffic Incident	Intra Facility Coordination Failure
Situations
ATC Facility	communication equipment : dtw.tower

Narrative:

On final approach, there was significant static on tower frequency 135.0. This has been a constant problem over the past few weeks. Over the past few weeks I have mentioned this to the tower whenever I noticed the same static. This severely degrades the communication between the tower and all aircraft on the frequency. The communication continues to be degraded, there may be an accident because of misunderstood or blocked communication on this frequency. Tower told us today that nothing is being done about this problem. Let's get a new frequency or fix the problem before someone gets hurt. Callback conversation with reporter revealed the following information: reporter advised that the tower frequency has been changed, resolving the problem. Additional information: a dtw specialist advised the interference resulted from a transmitting station in canada. Unable to obtain resolution from the transmitting station organization, the FAA changed the local control frequency.

Original NASA ASRS Text

Title: DC9 FLC CONCERNED WITH DTW ATCT LCL CTL FREQ INTERFERENCE.

Narrative: ON FINAL APCH, THERE WAS SIGNIFICANT STATIC ON TWR FREQ 135.0. THIS HAS BEEN A CONSTANT PROB OVER THE PAST FEW WKS. OVER THE PAST FEW WKS I HAVE MENTIONED THIS TO THE TWR WHENEVER I NOTICED THE SAME STATIC. THIS SEVERELY DEGRADES THE COM BTWN THE TWR AND ALL ACFT ON THE FREQ. THE COM CONTINUES TO BE DEGRADED, THERE MAY BE AN ACCIDENT BECAUSE OF MISUNDERSTOOD OR BLOCKED COM ON THIS FREQ. TWR TOLD US TODAY THAT NOTHING IS BEING DONE ABOUT THIS PROB. LET'S GET A NEW FREQ OR FIX THE PROB BEFORE SOMEONE GETS HURT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED THAT THE TWR FREQ HAS BEEN CHANGED, RESOLVING THE PROB. ADDITIONAL INFO: A DTW SPECIALIST ADVISED THE INTERFERENCE RESULTED FROM A XMITTING STATION IN CANADA. UNABLE TO OBTAIN RESOLUTION FROM THE XMITTING STATION ORGANIZATION, THE FAA CHANGED THE LCL CTL FREQ.

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.