Narrative:

If TCAS warnings received are valid, there is a serious problem. Although my operation in the lax area with TCAS equipment has been limited, I have received low level TA's on every departure and now an RA below 1200' AGL. On this particular departure, I got a first TA at approximately 700' AGL. By the time we reached 1200' AGL, we had an RA with climb instructions in excess of 4000 FPM. While we had almost continual instructions from TCAS, we were trying to clean up the aircraft (flaps retraction), were being assigned heading and altitude directions by lax tower, told to switch to departure control and trying to communicate with lax departure control and follow their instructions. All this, with TCAS instructions drowning out our operational communications and instructions. We saw nothing. As a result, I turned TCAS off at 1200' AGL. At a critical time such as this, TCAS was creating a dangerous situation. While discussing lax operation with TCAS, arrs create too may TA's also, I have heard the suggestion to leave the transponder in TA till 500'. That would not have helped us. Neither would it help below 500' on arrival. In high density airports with traffic patterns such as lax, crews need relief, not harassment from equipment that is supposed to help us in safely operating transport aircraft.

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Original NASA ASRS Text

Title: ACR LGT CAPT'S COMPLAINT ABOUT THE VOLUME OF TCASII ALERTS. SAYS THEY DISRUPT ATC COM.

Narrative: IF TCAS WARNINGS RECEIVED ARE VALID, THERE IS A SERIOUS PROB. ALTHOUGH MY OPERATION IN THE LAX AREA WITH TCAS EQUIP HAS BEEN LIMITED, I HAVE RECEIVED LOW LEVEL TA'S ON EVERY DEP AND NOW AN RA BELOW 1200' AGL. ON THIS PARTICULAR DEP, I GOT A FIRST TA AT APPROX 700' AGL. BY THE TIME WE REACHED 1200' AGL, WE HAD AN RA WITH CLB INSTRUCTIONS IN EXCESS OF 4000 FPM. WHILE WE HAD ALMOST CONTINUAL INSTRUCTIONS FROM TCAS, WE WERE TRYING TO CLEAN UP THE ACFT (FLAPS RETRACTION), WERE BEING ASSIGNED HDG AND ALT DIRECTIONS BY LAX TWR, TOLD TO SWITCH TO DEP CTL AND TRYING TO COMMUNICATE WITH LAX DEP CTL AND FOLLOW THEIR INSTRUCTIONS. ALL THIS, WITH TCAS INSTRUCTIONS DROWNING OUT OUR OPERATIONAL COMS AND INSTRUCTIONS. WE SAW NOTHING. AS A RESULT, I TURNED TCAS OFF AT 1200' AGL. AT A CRITICAL TIME SUCH AS THIS, TCAS WAS CREATING A DANGEROUS SITUATION. WHILE DISCUSSING LAX OPERATION WITH TCAS, ARRS CREATE TOO MAY TA'S ALSO, I HAVE HEARD THE SUGGESTION TO LEAVE THE XPONDER IN TA TILL 500'. THAT WOULD NOT HAVE HELPED US. NEITHER WOULD IT HELP BELOW 500' ON ARR. IN HIGH DENSITY ARPTS WITH TFC PATTERNS SUCH AS LAX, CREWS NEED RELIEF, NOT HARASSMENT FROM EQUIP THAT IS SUPPOSED TO HELP US IN SAFELY OPERATING TRANSPORT ACFT.

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.