Air carrier large transport aircraft on approach had near midair collision with an light transport a...

Attributes
ACN	378128
Time
Date	199708
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	agl bound lower : 1500 agl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 700
ASRS Report	378128
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	unspecified : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Established on localizer and GS for runway 25L at 1500 ft AGL, approximately 10 NM east of lax. After cleared for approach, approach control advised us that a brasilia aircraft was joining the localizer for runway 25R and that the brasilia was at our right side and above in a turn and descending. As I turned and looked I saw the brasilia descending towards us at our 3 O'clock position, directly abeam. The brasilia started a turn to the right to intercept the localizer but overshot final and continued to descend and overshoot into our position. The brasilia was in a descending turn with his belly toward us. In my opinion he could not see us since I could not see his cockpit windows. He was approximately 200-300 ft away. I informed the captain that the brasilia was descending into us and we would need to deviation left of course. I radioed approach control of the situation and our need to deviation left of course to avoid the brasilia. During this time, approach has also advised us of a helicopter below and off our left. We did not have the helicopter in sight. Our TCASII was active at this point commanding a descent at 2000 FPM to avoid the brasilia. (We deviated slightly left and down to avoid a collision.) the brasilia leveled off and began his approach directly off our wingtip and slightly behind. The brasilia maintained this position throughout the approach to landing. We considered a go around during this event but were concerned about our wake turbulence and the brasilia and helicopter. We (and the brasilia) landed without further incident. In hindsight, I question the timing of the approach controller who put the brasilia on a base heading and an intercept with another aircraft on final (us) when the rollout and approach would be directly abeam and in possible conflict. Especially with such close runways (runway 25L/right) a staggered approach would seem wiser. The brasilia also appeared to make no effort at establishing any lateral separation.

Original NASA ASRS Text

Title: ACR LGT ACFT ON APCH HAD NMAC WITH AN LTT ALSO ON APCH TO ADJACENT PARALLEL RWY. INTRUDER ACFT OVERSHOT CTRLINE AND RPTR WAS LIMITED IN MANEUVERING L DUE TO HELI TFC.

Narrative: ESTABLISHED ON LOC AND GS FOR RWY 25L AT 1500 FT AGL, APPROX 10 NM E OF LAX. AFTER CLRED FOR APCH, APCH CTL ADVISED US THAT A BRASILIA ACFT WAS JOINING THE LOC FOR RWY 25R AND THAT THE BRASILIA WAS AT OUR R SIDE AND ABOVE IN A TURN AND DSNDING. AS I TURNED AND LOOKED I SAW THE BRASILIA DSNDING TOWARDS US AT OUR 3 O'CLOCK POS, DIRECTLY ABEAM. THE BRASILIA STARTED A TURN TO THE R TO INTERCEPT THE LOC BUT OVERSHOT FINAL AND CONTINUED TO DSND AND OVERSHOOT INTO OUR POS. THE BRASILIA WAS IN A DSNDING TURN WITH HIS BELLY TOWARD US. IN MY OPINION HE COULD NOT SEE US SINCE I COULD NOT SEE HIS COCKPIT WINDOWS. HE WAS APPROX 200-300 FT AWAY. I INFORMED THE CAPT THAT THE BRASILIA WAS DSNDING INTO US AND WE WOULD NEED TO DEV L OF COURSE. I RADIOED APCH CTL OF THE SIT AND OUR NEED TO DEV L OF COURSE TO AVOID THE BRASILIA. DURING THIS TIME, APCH HAS ALSO ADVISED US OF A HELI BELOW AND OFF OUR L. WE DID NOT HAVE THE HELI IN SIGHT. OUR TCASII WAS ACTIVE AT THIS POINT COMMANDING A DSCNT AT 2000 FPM TO AVOID THE BRASILIA. (WE DEVIATED SLIGHTLY L AND DOWN TO AVOID A COLLISION.) THE BRASILIA LEVELED OFF AND BEGAN HIS APCH DIRECTLY OFF OUR WINGTIP AND SLIGHTLY BEHIND. THE BRASILIA MAINTAINED THIS POS THROUGHOUT THE APCH TO LNDG. WE CONSIDERED A GAR DURING THIS EVENT BUT WERE CONCERNED ABOUT OUR WAKE TURB AND THE BRASILIA AND HELI. WE (AND THE BRASILIA) LANDED WITHOUT FURTHER INCIDENT. IN HINDSIGHT, I QUESTION THE TIMING OF THE APCH CTLR WHO PUT THE BRASILIA ON A BASE HDG AND AN INTERCEPT WITH ANOTHER ACFT ON FINAL (US) WHEN THE ROLLOUT AND APCH WOULD BE DIRECTLY ABEAM AND IN POSSIBLE CONFLICT. ESPECIALLY WITH SUCH CLOSE RWYS (RWY 25L/R) A STAGGERED APCH WOULD SEEM WISER. THE BRASILIA ALSO APPEARED TO MAKE NO EFFORT AT ESTABLISHING ANY LATERAL SEPARATION.

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.

Air carrier large transport aircraft on approach had near midair collision with an light transport also on approach to adjacent parallel runway. Intruder aircraft overshot centerline and reporter was limited in maneuvering left due to helicopter traffic.