<< >> NASA ASRS Report 844123, July 2009

A B737-700 flight crew reported severe static and musical interference on N90 TRACON frequency downwind to lga runway 22.

Attributes
ACN	844123
Time
Date	200907
Local Time Of Day	0001-0600
Place
Locale Reference	LGA.Airport
State Reference	NY
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	VHF
Person 1
Function	Captain
Experience	Flight Crew Last 90 Days 68
Person 2
Function	First Officer
Experience	Flight Crew Last 90 Days 206 Flight Crew Type 4800
Events
Anomaly	Inflight Event / Encounter Other / Unknown

Narrative:

While on right downwind approaching the base turn to runway 22 at lga; we began getting significant static on the radio. Once turned to base the static (with music mixed in - similar to a bad am signal) was so severe we were unable to hear/respond to any approach calls. As we approached our turn to final point; I transmitted in the blind to approach that we were commencing our turn to final. We were barely able to hear her and then given direct a turn to 220. We responded. She then directed us to climb to 3000 ft and sent us back around the pattern. As we approached the same downwind to base location; the static began increasing again. This time it was difficult to hear approach; but we were able to understand the instructions. I believe there is a significant frequency conflict issue in that area.

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Original NASA ASRS Text

Title: A B737-700 flight crew reported severe static and musical interference on N90 TRACON frequency downwind to LGA Runway 22.

Narrative: While on right downwind approaching the base turn to Runway 22 at LGA; we began getting significant static on the radio. Once turned to base the static (with music mixed in - similar to a bad AM signal) was so severe we were unable to hear/respond to any Approach calls. As we approached our turn to final point; I transmitted in the blind to Approach that we were commencing our turn to final. We were barely able to hear her and then given direct a turn to 220. We responded. She then directed us to climb to 3000 FT and sent us back around the pattern. As we approached the same downwind to base location; the static began increasing again. This time it was difficult to hear Approach; but we were able to understand the instructions. I believe there is a significant frequency conflict issue in that area.

Data retrieved from NASA's ASRS site as of April 2012 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.