Potential conflict with arrival traffic is experienced by air carrier medium large transport, thus setting off his TCASII RA and creating flight crew distraction audible interference.

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Attributes
ACN	174436
Time
Date	199103
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lgb
State Reference	CA
Altitude	msl bound lower : 450 msl bound upper : 650
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lgb
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	descent : approach landing other
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 8100 flight time type : 1000
ASRS Report	174436
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : unable
Consequence	Other
Miss Distance	horizontal : 5000 vertical : 450
Supplementary
Air Traffic Incident	other
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

On ILS approach to lgb, captain at controls, first officer reported light aircraft traffic about 11 O'clock. TCAS screen diamond with altitude readout plus 500'. He was under tower control to land runway 25. TCAS issued an RA, 'monitor vertical speed,' with red arc mandating restricting aircraft to approximately 700 FPM descent. At 4500' MSL TCAS announced traffic clear. Trying to listen to tower frequency on approach, alternating CAWS announcements for stabilizer trim plus TCAS sounded like a circus. At same time we were observing an air carrier medium large transport on takeoff roll to assure landing clearance. Too much noise at critical stage of flight.

Original NASA ASRS Text

Title: POTENTIAL CONFLICT WITH ARR TRAFFIC IS EXPERIENCED BY ACR MLG, THUS SETTING OFF HIS TCASII RA AND CREATING FLT CREW DISTR AUDIBLE INTERFERENCE.

Narrative: ON ILS APCH TO LGB, CAPT AT CTLS, F/O RPTED LIGHT ACFT TFC ABOUT 11 O'CLOCK. TCAS SCREEN DIAMOND WITH ALT READOUT PLUS 500'. HE WAS UNDER TWR CTL TO LAND RWY 25. TCAS ISSUED AN RA, 'MONITOR VERT SPD,' WITH RED ARC MANDATING RESTRICTING ACFT TO APPROX 700 FPM DSNT. AT 4500' MSL TCAS ANNOUNCED TFC CLR. TRYING TO LISTEN TO TWR FREQ ON APCH, ALTERNATING CAWS ANNOUNCEMENTS FOR STAB TRIM PLUS TCAS SOUNDED LIKE A CIRCUS. AT SAME TIME WE WERE OBSERVING AN ACR MLG ON TKOF ROLL TO ASSURE LNDG CLRNC. TOO MUCH NOISE AT CRITICAL STAGE OF FLT.

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.