Narrative:

Departure runway was 20L. Takeoff clearance was received with a turn to heading of 340 degrees. After takeoff at about 2000' MSL a right turn to 340 degrees was started. Contact with radar was already made. In the turn, at the 250 degree point, the controller said the turn to 340 degrees was to have been made to the left. At this time he issued a new clearance, to turn further right to a heading of 020 degrees. When this turn was completed he issued a new clearance back to a heading of 340 degrees. After 5 mins a clearance was given to proceed on course. A call was placed to luk tower at the completion of this trip and tower explained there was a group of power lines northeast of the airport and that was the reason a left turn was needed. There is a SID for this airport, but it was not given for this departure. While this incident caused no problems except for the additional turn required, in the future if the SID is not issued the tower might explain the need for a left turn around to 340 degrees when a right turn seems to be the most natural.

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Original NASA ASRS Text

Title: PLT OF SMT TURNING RIGHT TO 340 DEGREES WAS ADVISED BY DEP CTLR SHOULD HAVE BEEN A TURN TO LEFT.

Narrative: DEP RWY WAS 20L. TKOF CLRNC WAS RECEIVED WITH A TURN TO HDG OF 340 DEGS. AFTER TKOF AT ABOUT 2000' MSL A RIGHT TURN TO 340 DEGS WAS STARTED. CONTACT WITH RADAR WAS ALREADY MADE. IN THE TURN, AT THE 250 DEG POINT, THE CTLR SAID THE TURN TO 340 DEGS WAS TO HAVE BEEN MADE TO THE LEFT. AT THIS TIME HE ISSUED A NEW CLRNC, TO TURN FURTHER RIGHT TO A HDG OF 020 DEGS. WHEN THIS TURN WAS COMPLETED HE ISSUED A NEW CLRNC BACK TO A HDG OF 340 DEGS. AFTER 5 MINS A CLRNC WAS GIVEN TO PROCEED ON COURSE. A CALL WAS PLACED TO LUK TWR AT THE COMPLETION OF THIS TRIP AND TWR EXPLAINED THERE WAS A GROUP OF PWR LINES NE OF THE ARPT AND THAT WAS THE REASON A LEFT TURN WAS NEEDED. THERE IS A SID FOR THIS ARPT, BUT IT WAS NOT GIVEN FOR THIS DEP. WHILE THIS INCIDENT CAUSED NO PROBS EXCEPT FOR THE ADDITIONAL TURN REQUIRED, IN THE FUTURE IF THE SID IS NOT ISSUED THE TWR MIGHT EXPLAIN THE NEED FOR A LEFT TURN AROUND TO 340 DEGS WHEN A RIGHT TURN SEEMS TO BE THE MOST NATURAL.

Data retrieved from NASA's ASRS site as of August 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.