Medium large transport on visual approach given traffic advisory on small transport making visual to...

Attributes
ACN	175457
Time
Date	199104
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : lax tower : lcax
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport
Flight Phase	descent : approach descent other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Small Transport
Flight Phase	descent : approach descent other
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 : 200 flight time total : 10000 flight time type : 200
ASRS Report	175457
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 100 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were making a visibility approach to runway 24R at lax at approximately XA30 on the evening of 4/tue/91. The WX at the airport was clear, 15 mi visibility, wind was 250/8 and the temperature was 67 degrees. The first officer was flying the aircraft and had made a normal approach and was about 5-6 mi out. Just prior to handing us off to the tower, approach asked if we had an air carrier small transport Y aircraft in sight at about our 2 O'clock position. We told the controller we did, and she said that aircraft was going to stay above and behind our aircraft and to go to the south side (runways 25L/right). As we continued our approach,I noticed that the other aircraft had made a turn toward the airport and we were on a converging course. The small transport Y aircraft appeared to be a bit high and we thought he was going to go over the top and maybe slightly behind us. As we approaching 1200' MSL, the other aircraft appeared to make a further turn to the airport and started to descend. My copilot pushed the nose over in order to go beneath him. At 1000' MSL the aircraft crossed in front of us with just 200' to spare and maybe 100' above us. We made a normal landing from that point and once on the ground the tower asked us to call the approach control supervisor. I might add that the tower also pointed the traffic out to us and gave us the same comment about what the small transport Y aircraft was going to do. I believe the tower had the north side on 1 frequency and the south side on another at that time, so we did not hear the comments of either the pilot or the controller. The approach supervisor explained that the controller handling us was still somewhat new and didn't understand the area's operation yet. I think if that is the case, maybe the controller should have a little more supervision until she does know that area. We were the only 2 aircraft in the sky and it would have been tragic if we had met.

Original NASA ASRS Text

Title: MLG ON VISUAL APCH GIVEN TRAFFIC ADVISORY ON SMT MAKING VISUAL TO PARALLEL RWY AND ADVISED THE SMT WOULD PASS ABOVE AND BEHIND MLG. SMT WENT IN FRONT OF MLG WHO TOOK EVASIVE ACTION.

Narrative: WE WERE MAKING A VIS APCH TO RWY 24R AT LAX AT APPROX XA30 ON THE EVENING OF 4/TUE/91. THE WX AT THE ARPT WAS CLR, 15 MI VISIBILITY, WIND WAS 250/8 AND THE TEMP WAS 67 DEGS. THE F/O WAS FLYING THE ACFT AND HAD MADE A NORMAL APCH AND WAS ABOUT 5-6 MI OUT. JUST PRIOR TO HANDING US OFF TO THE TWR, APCH ASKED IF WE HAD AN ACR SMT Y ACFT IN SIGHT AT ABOUT OUR 2 O'CLOCK POS. WE TOLD THE CTLR WE DID, AND SHE SAID THAT ACFT WAS GOING TO STAY ABOVE AND BEHIND OUR ACFT AND TO GO TO THE S SIDE (RWYS 25L/R). AS WE CONTINUED OUR APCH,I NOTICED THAT THE OTHER ACFT HAD MADE A TURN TOWARD THE ARPT AND WE WERE ON A CONVERGING COURSE. THE SMT Y ACFT APPEARED TO BE A BIT HIGH AND WE THOUGHT HE WAS GOING TO GO OVER THE TOP AND MAYBE SLIGHTLY BEHIND US. AS WE APCHING 1200' MSL, THE OTHER ACFT APPEARED TO MAKE A FURTHER TURN TO THE ARPT AND STARTED TO DSND. MY COPLT PUSHED THE NOSE OVER IN ORDER TO GO BENEATH HIM. AT 1000' MSL THE ACFT CROSSED IN FRONT OF US WITH JUST 200' TO SPARE AND MAYBE 100' ABOVE US. WE MADE A NORMAL LNDG FROM THAT POINT AND ONCE ON THE GND THE TWR ASKED US TO CALL THE APCH CTL SUPVR. I MIGHT ADD THAT THE TWR ALSO POINTED THE TFC OUT TO US AND GAVE US THE SAME COMMENT ABOUT WHAT THE SMT Y ACFT WAS GOING TO DO. I BELIEVE THE TWR HAD THE N SIDE ON 1 FREQ AND THE S SIDE ON ANOTHER AT THAT TIME, SO WE DID NOT HEAR THE COMMENTS OF EITHER THE PLT OR THE CTLR. THE APCH SUPVR EXPLAINED THAT THE CTLR HANDLING US WAS STILL SOMEWHAT NEW AND DIDN'T UNDERSTAND THE AREA'S OPERATION YET. I THINK IF THAT IS THE CASE, MAYBE THE CTLR SHOULD HAVE A LITTLE MORE SUPERVISION UNTIL SHE DOES KNOW THAT AREA. WE WERE THE ONLY 2 ACFT IN THE SKY AND IT WOULD HAVE BEEN TRAGIC IF WE HAD MET.

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.

Medium large transport on visual approach given traffic advisory on small transport making visual to parallel runway and advised the small transport would pass above and behind medium large transport. Small transport went in front of medium large transport who took evasive action.