<< >> NASA ASRS Report 318330, August 1995

Flight crew of an large transport turned from assigned heading in response to visual sighting of another aircraft warned by TCASII.

Attributes
ACN	318330
Time
Date	199508
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	msl bound lower : 9000 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : commercial pilot : atp
Experience	flight time last 90 days : 130 flight time total : 12000
ASRS Report	318330
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course other
Consequence	Other
Miss Distance	unspecified : 12000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

We were climbing to 9000 ft after departing runway 24L at lax, first officer flying. Had been assigned heading 320 degrees on climb out to intercept gorham departure. As first officer was near leveloff, we were assigned heading 360 degrees. At leveloff (hand flown) we got TCASII warning of 'traffic, traffic.' aircraft landing lights were out the first officer window. First officer rolled out of right turn into left turn. After a few seconds first officer reported his 'capture' on the radial had disappeared. He turned back to 360 degree heading as socal gave us further turn and asked if we had navigation problem. First officer turned to new heading at maximum bank angle. We report to socal that we had a TCASII warning and had seen an aircraft. Socal said no aircraft were near us at that time. Continued on out the departure radial with no further problems.

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Original NASA ASRS Text

Title: FLC OF AN LGT TURNED FROM ASSIGNED HDG IN RESPONSE TO VISUAL SIGHTING OF ANOTHER ACFT WARNED BY TCASII.

Narrative: WE WERE CLBING TO 9000 FT AFTER DEPARTING RWY 24L AT LAX, FO FLYING. HAD BEEN ASSIGNED HDG 320 DEGS ON CLBOUT TO INTERCEPT GORHAM DEP. AS FO WAS NEAR LEVELOFF, WE WERE ASSIGNED HDG 360 DEGS. AT LEVELOFF (HAND FLOWN) WE GOT TCASII WARNING OF 'TFC, TFC.' ACFT LNDG LIGHTS WERE OUT THE FO WINDOW. FO ROLLED OUT OF R TURN INTO L TURN. AFTER A FEW SECONDS FO RPTED HIS 'CAPTURE' ON THE RADIAL HAD DISAPPEARED. HE TURNED BACK TO 360 DEG HDG AS SOCAL GAVE US FURTHER TURN AND ASKED IF WE HAD NAV PROB. FO TURNED TO NEW HDG AT MAX BANK ANGLE. WE RPT TO SOCAL THAT WE HAD A TCASII WARNING AND HAD SEEN AN ACFT. SOCAL SAID NO ACFT WERE NEAR US AT THAT TIME. CONTINUED ON OUT THE DEP RADIAL WITH NO FURTHER PROBS.

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.