Narrative:

Lax was clear and 7 mi visibility. Wind from the west at 7 KTS. The in-flight visibility was approximately 2-3 mi into the sun and approximately 5-7 mi away from the sun. As we were given a base turn, approach instructed a commuter to maintain 2500 ft, 180 KTS, and to keep us in sight, and to follow us to the airport -- he was to land 24L. The commuter pilot at the time sounded confused and we were not sure he had us in sight. We were then given a vector heading to intercept the localizer and cleared for an ILS to 24R to maintain 2500 ft until established and 180 KTS to the OM. The commuter pilot requested 3000 ft to stay out of our wake. He was given clearance to do so but to keep us in sight. We were established on the approach approximately 1 mi outside the OM. The commuter came into view out the left dv window in a descending left bank ahead and approximately 150 ft off our left wing, passing us. We were at 180 KTS when he was approximately 500 ft ahead of us and level with us he abruptly pulled up and climbed approximately 250 ft above us and slowed -- we passed him at this time. I feel the commuter pilot accepted the visual approach without seeing our aircraft. His voice and phraseology sounded as if he did not have the situation under control and perhaps should have requested a vector until he had his traffic in sight to follow. The commuter pilot's answers to the controller were not positive and sure when asked if we were in sight. I also feel the controller was not convinced the commuter pilot could keep us in sight. Supplemental information from acn 237403: while executing a visual approach to 24L at lax we pulled along side of an widebody transport on final to 24R. Inadvertently we passed the widebody transport while attempting to match speed. We chose the along side position for wake turbulence avoidance. The controller may have stated for us not to pass the widebody transport.

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Original NASA ASRS Text

Title: LTT CAME VERY CLOSE TO WDB ON PARALLEL VISUAL APCHS TO LAX.

Narrative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

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.