Flight crew of an medium large transport air carrier aircraft took evasive action in response to a TCASII RA by increasing the rate of climb just after liftoff from a multiple parallel runways airport.

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Attributes
ACN	248403
Time
Date	199309
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	agl bound lower : 200 agl bound upper : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dtw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : initial
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : cfi pilot : atp pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 14000 flight time type : 6000
ASRS Report	248403
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	non adherence : required legal separation other anomaly other other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 1000 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Shortly after gear retraction and basically on runway heading, my aircraft received a TCASII generated RA. Our TCASII instructed us to maintain a vertical speed of 2000-3000 FPM. We immediately cleared the airspace around us and complied with the RA. After the RA passed we returned to normal climb parameters. We advised ATC (departure control) of the RA. While we never actually saw the traffic the depiction on the TCASII showed we passed within 100 ft vertically and perhaps less than 1000 ft horizontally. I consider this well within a near miss criteria. ATC later informed us the other aircraft was an light transport on a 280 degree assigned heading and departing metropolitan airport as well. Before, during and after our takeoff ATC never informed us of the traffic or possible conflict.

Original NASA ASRS Text

Title: FLC OF AN MLG ACR ACFT TOOK EVASIVE ACTION IN RESPONSE TO A TCASII RA BY INCREASING THE RATE OF CLB JUST AFTER LIFTOFF FROM A MULTIPLE PARALLEL RWYS ARPT.

Narrative: SHORTLY AFTER GEAR RETRACTION AND BASICALLY ON RWY HDG, MY ACFT RECEIVED A TCASII GENERATED RA. OUR TCASII INSTRUCTED US TO MAINTAIN A VERT SPD OF 2000-3000 FPM. WE IMMEDIATELY CLRED THE AIRSPACE AROUND US AND COMPLIED WITH THE RA. AFTER THE RA PASSED WE RETURNED TO NORMAL CLB PARAMETERS. WE ADVISED ATC (DEP CTL) OF THE RA. WHILE WE NEVER ACTUALLY SAW THE TFC THE DEPICTION ON THE TCASII SHOWED WE PASSED WITHIN 100 FT VERTICALLY AND PERHAPS LESS THAN 1000 FT HORIZLY. I CONSIDER THIS WELL WITHIN A NEAR MISS CRITERIA. ATC LATER INFORMED US THE OTHER ACFT WAS AN LTT ON A 280 DEG ASSIGNED HDG AND DEPARTING METRO ARPT AS WELL. BEFORE, DURING AND AFTER OUR TKOF ATC NEVER INFORMED US OF THE TFC OR POSSIBLE CONFLICT.

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.