Air carrier X TCASII TA. Non adherence to ATC clearance, had conflict with VFR aircraft. See and avoid concept. Evasive action taken.

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Attributes
ACN	297671
Time
Date	199503
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pfn
State Reference	FL
Altitude	msl bound lower : 1000 msl bound upper : 1000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pfn tracon : mem
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : initial
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 225 flight time total : 8000 flight time type : 4000
ASRS Report	297671
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : clearance other spatial deviation
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Before takeoff from pfn runway 32 tower said there was traffic a few mi northeast of the airport. Tower cleared us for takeoff and told us to maintain runway heading. As we climbed out at around 1500 ft MSL we saw on our own TCASII traffic Y, co-altitude, only a mi or so away, possibly converging (outside IMC). I turned left so as to stop the convergence. I think that the tower erred in its estimation of our separation and we erred in trusting him.

Original NASA ASRS Text

Title: ACR X TCASII TA. NON ADHERENCE TO ATC CLRNC, HAD CONFLICT WITH VFR ACFT. SEE AND AVOID CONCEPT. EVASIVE ACTION TAKEN.

Narrative: BEFORE TKOF FROM PFN RWY 32 TWR SAID THERE WAS TFC A FEW MI NE OF THE ARPT. TWR CLRED US FOR TKOF AND TOLD US TO MAINTAIN RWY HDG. AS WE CLBED OUT AT AROUND 1500 FT MSL WE SAW ON OUR OWN TCASII TFC Y, CO-ALT, ONLY A MI OR SO AWAY, POSSIBLY CONVERGING (OUTSIDE IMC). I TURNED L SO AS TO STOP THE CONVERGENCE. I THINK THAT THE TWR ERRED IN ITS ESTIMATION OF OUR SEPARATION AND WE ERRED IN TRUSTING HIM.

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.