Captain of medium large transport air carrier aircraft took evasive action in response to a TCASII during initial climb out after takeoff resulting in a near midair collision.

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Attributes
ACN	238942
Time
Date	199304
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msy
State Reference	LA
Altitude	msl bound lower : 1200 msl bound upper : 1500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : msy tracon : iad
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : initial climbout : intermediate altitude
Flight Plan	IFR
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 : 180 flight time total : 9800 flight time type : 1800
ASRS Report	238942
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac non adherence : required legal separation other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

VFR takeoff runway 28 msy. 7310 ft available, cutback west end. Gear just retracted, climbing through 600-800 ft TCASII advisory for traffic goes off. Screen on 10 mi scale shows traffic now 600 ft above between 11-12 O'clock approximately 3-4 mi. I leveled off immediately with flaps still at 11 degrees and override autothrottles by holding back throttles by hand. Now at 1200 ft MSL the traffic comes overhead at 300 ft, dead center to the TCASII screen. No RA. While this was happening. The first officer had asked tower about conflicting traffic and stated we were leveling off for a TCASII warning (we were cleared to 6000 ft). As traffic passed overhead (we never saw it), it exited at about my 4 O'clock position, ATC said we had traffic 'off our right at 1500 ft.' we had taken off into the path of traffic at 1500 ft MSL, cleared to 6000 ft by msy tower, with no clue until TCASII alerted us. I don't know what would have happened if I had tried to climb direct to 6000 ft.

Original NASA ASRS Text

Title: CAPT OF MLG ACR ACFT TOOK EVASIVE ACTION IN RESPONSE TO A TCASII DURING INITIAL CLBOUT AFTER TKOF RESULTING IN A NMAC.

Narrative: VFR TKOF RWY 28 MSY. 7310 FT AVAILABLE, CUTBACK W END. GEAR JUST RETRACTED, CLBING THROUGH 600-800 FT TCASII ADVISORY FOR TFC GOES OFF. SCREEN ON 10 MI SCALE SHOWS TFC NOW 600 FT ABOVE BTWN 11-12 O'CLOCK APPROX 3-4 MI. I LEVELED OFF IMMEDIATELY WITH FLAPS STILL AT 11 DEGS AND OVERRIDE AUTOTHROTTLES BY HOLDING BACK THROTTLES BY HAND. NOW AT 1200 FT MSL THE TFC COMES OVERHEAD AT 300 FT, DEAD CTR TO THE TCASII SCREEN. NO RA. WHILE THIS WAS HAPPENING. THE FO HAD ASKED TWR ABOUT CONFLICTING TFC AND STATED WE WERE LEVELING OFF FOR A TCASII WARNING (WE WERE CLRED TO 6000 FT). AS TFC PASSED OVERHEAD (WE NEVER SAW IT), IT EXITED AT ABOUT MY 4 O'CLOCK POS, ATC SAID WE HAD TFC 'OFF OUR R AT 1500 FT.' WE HAD TAKEN OFF INTO THE PATH OF TFC AT 1500 FT MSL, CLRED TO 6000 FT BY MSY TWR, WITH NO CLUE UNTIL TCASII ALERTED US. I DON'T KNOW WHAT WOULD HAVE HAPPENED IF I HAD TRIED TO CLB DIRECT TO 6000 FT.

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.