Approach control called out 1 B-757 to an approaching aircraft for a visual parallel approach. There was another B-757 on approach that was mistaken for the target aircraft.

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Attributes
ACN	272479
Time
Date	199406
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 17000
ASRS Report	272479
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : became reoriented other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Approach controller asked if we had a 757 at 1 O'clock position. Both the copilot and I confirmed a 757 at our 1 O'clock position. I advised the controller we had it in sight and he said that we were cleared for a visual approach for runway 24R the 757 was for the 24L runway and that we should not pass him. On our base leg the controller kept asking if we had the traffic and we kept saying yes until he descended into the haze at which time I said we no longer could see him. We were on right base the 757 was lined up with 24L and he was at our 2:30 position. The controller was now indicating our traffic was at our 11:30 position and high and it was obvious as we were going to turn on final that we would be ahead of this aircraft. We saw a 757 in our 1 O'clock position when he cleared us for the visual but obviously it was not the 757 he meant. This 757 was well behind the 757 we saw in our 1 O'clock position. The controller did not communication to us in a timely manner that he was concerned that we would be ahead of his traffic and his call for 1 O'clock traffic (his intended) was not 1 O'clock for us. He could have very easily said our traffic was the second 757. Then we would have been alerted to look for another 757. As it was we saw one at our 1 O'clock and took our instructions off of him.

Original NASA ASRS Text

Title: APCH CTL CALLED OUT 1 B-757 TO AN APCHING ACFT FOR A VISUAL PARALLEL APCH. THERE WAS ANOTHER B-757 ON APCH THAT WAS MISTAKEN FOR THE TARGET ACFT.

Narrative: APCH CTLR ASKED IF WE HAD A 757 AT 1 O'CLOCK POS. BOTH THE COPLT AND I CONFIRMED A 757 AT OUR 1 O'CLOCK POS. I ADVISED THE CTLR WE HAD IT IN SIGHT AND HE SAID THAT WE WERE CLRED FOR A VISUAL APCH FOR RWY 24R THE 757 WAS FOR THE 24L RWY AND THAT WE SHOULD NOT PASS HIM. ON OUR BASE LEG THE CTLR KEPT ASKING IF WE HAD THE TFC AND WE KEPT SAYING YES UNTIL HE DSNDED INTO THE HAZE AT WHICH TIME I SAID WE NO LONGER COULD SEE HIM. WE WERE ON R BASE THE 757 WAS LINED UP WITH 24L AND HE WAS AT OUR 2:30 POS. THE CTLR WAS NOW INDICATING OUR TFC WAS AT OUR 11:30 POS AND HIGH AND IT WAS OBVIOUS AS WE WERE GOING TO TURN ON FINAL THAT WE WOULD BE AHEAD OF THIS ACFT. WE SAW A 757 IN OUR 1 O'CLOCK POS WHEN HE CLRED US FOR THE VISUAL BUT OBVIOUSLY IT WAS NOT THE 757 HE MEANT. THIS 757 WAS WELL BEHIND THE 757 WE SAW IN OUR 1 O'CLOCK POS. THE CTLR DID NOT COM TO US IN A TIMELY MANNER THAT HE WAS CONCERNED THAT WE WOULD BE AHEAD OF HIS TFC AND HIS CALL FOR 1 O'CLOCK TFC (HIS INTENDED) WAS NOT 1 O'CLOCK FOR US. HE COULD HAVE VERY EASILY SAID OUR TFC WAS THE SECOND 757. THEN WE WOULD HAVE BEEN ALERTED TO LOOK FOR ANOTHER 757. AS IT WAS WE SAW ONE AT OUR 1 O'CLOCK AND TOOK OUR INSTRUCTIONS OFF OF HIM.

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.