An air carrier crew on final approach to lax runway 25L reported a TCAS RA at 1;900 ft on final. Aft...

Attributes
ACN	882217
Time
Date	201004
Local Time Of Day	1201-1800
Place
Locale Reference	LAX.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Component
Aircraft Component	Traffic Collision Avoidance System (TCAS)
Person 1
Function	Relief Pilot First Officer Pilot Not Flying
Person 2
Function	Captain Pilot Not Flying
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 0 Vertical 200

Narrative:

Responded to TCAS RA -- lax upon approach lax -- cleared for visual to runway 25L; gear down; flaps 20 on glideslope. At 1900 ft TCAS gave 'traffic' advisory. Target showed up on screen; indicated -400 ft approximately; 11 o'clock; 1 mile. Closing target not in sight. At -300 ft TCAS gave RA to 'climb.' first officer initiated climb. Captain informed tower. Tower gave VFR instructions to climb to 2000 ft. Target indicated -200 ft underneath aircraft as we flew over target. No aircraft sighted by crew or tower. Upon second approach at 2000 ft on glideslope; TCAS briefly gave an indication of traffic again at the same location showing -1900 ft; 11 o'clock; 1 mile. Target then disappeared. Area of target seemed to be near a high school sports field on final approach. No aircraft or other activity noted.

Original NASA ASRS Text

Title: An air carrier Crew on final approach to LAX Runway 25L reported a TCAS RA at 1;900 FT on final. After executing a go-around and a second approach to Runway 25R; a TCAS target was again seen at the same position but no traffic sighted.

Narrative: Responded to TCAS RA -- LAX upon approach LAX -- cleared for visual to Runway 25L; gear down; flaps 20 on glideslope. At 1900 FT TCAS gave 'traffic' advisory. Target showed up on screen; indicated -400 FT approximately; 11 o'clock; 1 mile. Closing target not in sight. At -300 FT TCAS gave RA to 'climb.' First Officer initiated climb. Captain informed tower. Tower gave VFR instructions to climb to 2000 FT. Target indicated -200 FT underneath aircraft as we flew over target. No aircraft sighted by crew or tower. Upon second approach at 2000 FT on glideslope; TCAS briefly gave an indication of traffic again at the same location showing -1900 FT; 11 o'clock; 1 mile. Target then disappeared. Area of target seemed to be near a high school sports field on final approach. No aircraft or other activity noted.

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.

An air carrier crew on final approach to lax runway 25L reported a TCAS RA at 1;900 ft on final. After executing a go-around and a second approach to runway 25R; a TCAS target was again seen at the same position but no traffic sighted.