Reporter aircraft cleared for takeoff with instructions to maintain runway heading. Flight crew advised by tower that an aircraft was on practice approach on reciprocal of their runway. Thinking they better not fly out the approach course, flight crew altered heading without clearance. Probable conflict as a result. Callback attempted several times to obtain more complete information, but unable to contact reporter.

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Attributes
ACN	336710
Time
Date	199605
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cwa
State Reference	WI
Altitude	agl bound lower : 400 agl bound upper : 400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : cwa
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	climbout : intermediate altitude climbout : initial
Flight Plan	IFR
Aircraft 2
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 60 flight time total : 1800 flight time type : 60
ASRS Report	336710
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : took evasive action other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared for takeoff and runway heading. Tower also advised us of traffic on practice ILS opposite direction inside OM. We initiated the takeoff and as we climbed through 400 ft AGL tower handed us off to center. At that point we were not able to acquire a visual on the traffic, nor were we able to see it on our TCASII. We then decided to make a left deviation to clear the approach course of opposite direction traffic before we were directed to by center. I feel this problem was caused by a lack of information. We knew where the traffic was when we initiated the takeoff roll, but we did not know what his intentions were. So, if tower would have given more information, or if we had queried them for more information, I feel the problem could have been avoided. As a side note, the other aircraft was a PA-28 with about 25-30 KTS of wind on the tail for the practice approach.

Original NASA ASRS Text

Title: RPTR ACFT CLRED FOR TKOF WITH INSTRUCTIONS TO MAINTAIN RWY HDG. FLC ADVISED BY TWR THAT AN ACFT WAS ON PRACTICE APCH ON RECIPROCAL OF THEIR RWY. THINKING THEY BETTER NOT FLY OUT THE APCH COURSE, FLC ALTERED HDG WITHOUT CLRNC. PROBABLE CONFLICT AS A RESULT. CALLBACK ATTEMPTED SEVERAL TIMES TO OBTAIN MORE COMPLETE INFO, BUT UNABLE TO CONTACT RPTR.

Narrative: WE WERE CLRED FOR TKOF AND RWY HDG. TWR ALSO ADVISED US OF TFC ON PRACTICE ILS OPPOSITE DIRECTION INSIDE OM. WE INITIATED THE TKOF AND AS WE CLBED THROUGH 400 FT AGL TWR HANDED US OFF TO CTR. AT THAT POINT WE WERE NOT ABLE TO ACQUIRE A VISUAL ON THE TFC, NOR WERE WE ABLE TO SEE IT ON OUR TCASII. WE THEN DECIDED TO MAKE A L DEV TO CLR THE APCH COURSE OF OPPOSITE DIRECTION TFC BEFORE WE WERE DIRECTED TO BY CTR. I FEEL THIS PROB WAS CAUSED BY A LACK OF INFO. WE KNEW WHERE THE TFC WAS WHEN WE INITIATED THE TKOF ROLL, BUT WE DID NOT KNOW WHAT HIS INTENTIONS WERE. SO, IF TWR WOULD HAVE GIVEN MORE INFO, OR IF WE HAD QUERIED THEM FOR MORE INFO, I FEEL THE PROB COULD HAVE BEEN AVOIDED. AS A SIDE NOTE, THE OTHER ACFT WAS A PA-28 WITH ABOUT 25-30 KTS OF WIND ON THE TAIL FOR THE PRACTICE APCH.

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.