Narrative:

In slow cruise flight (approximately 100 KIAS) southwest direction second aircraft (high-wing cessna) in visual contact on parallel course to right of my aircraft, same altitude, ahead of wing, similar speed. I was in contact with bkl tower, other aircraft did not seem to be on tower frequency (no transmission before/during/after event). Advised tower of intentions and initiated 90 degree turn to northwest, expecting to pass safely behind second aircraft. At completion of turn, I passed below and behind second aircraft in close proximity. Unknown if second aircraft took evasive action. Possible causes of close proximity to other aircraft: inaccurate estimate of distance to, course of, and/or speed of other aircraft and/or turning radius of my aircraft. Change in course of other aircraft. Change in speed of other aircraft. Contributing factors: loss of visual contact with other aircraft. Failure to immediately abort turn on loss of visual contact with other aircraft. Other aircraft did not hear my announcement of right turn. Poor judgement: turning toward aircraft on parallel course at same altitude. Delaying aborting of turn while trying to reestablish visual contact with other aircraft. Better choices that would have prevented situation: descend to lower altitude prior to turn would guarantee vertical separation and improve ability to maintain visual contact during turn (low wing aircraft). Slow my aircraft to increase separation before attempting turn. Make turn to left (270 degree turn) away from other aircraft. Having other aircraft on tower frequency in class D airspace would also make him aware of my intentions.

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Original NASA ASRS Text

Title: NMAC -- PLT SEES ANOTHER ACFT BTWN HIS ACFT AND THE ARPT, BUT TURNS TOWARD THE OTHER ACFT ANYWAY AND HAS A NEAR HIT.

Narrative: IN SLOW CRUISE FLT (APPROX 100 KIAS) SW DIRECTION SECOND ACFT (HIGH-WING CESSNA) IN VISUAL CONTACT ON PARALLEL COURSE TO R OF MY ACFT, SAME ALT, AHEAD OF WING, SIMILAR SPD. I WAS IN CONTACT WITH BKL TWR, OTHER ACFT DID NOT SEEM TO BE ON TWR FREQ (NO XMISSION BEFORE/DURING/AFTER EVENT). ADVISED TWR OF INTENTIONS AND INITIATED 90 DEG TURN TO NW, EXPECTING TO PASS SAFELY BEHIND SECOND ACFT. AT COMPLETION OF TURN, I PASSED BELOW AND BEHIND SECOND ACFT IN CLOSE PROX. UNKNOWN IF SECOND ACFT TOOK EVASIVE ACTION. POSSIBLE CAUSES OF CLOSE PROX TO OTHER ACFT: INACCURATE ESTIMATE OF DISTANCE TO, COURSE OF, AND/OR SPD OF OTHER ACFT AND/OR TURNING RADIUS OF MY ACFT. CHANGE IN COURSE OF OTHER ACFT. CHANGE IN SPD OF OTHER ACFT. CONTRIBUTING FACTORS: LOSS OF VISUAL CONTACT WITH OTHER ACFT. FAILURE TO IMMEDIATELY ABORT TURN ON LOSS OF VISUAL CONTACT WITH OTHER ACFT. OTHER ACFT DID NOT HEAR MY ANNOUNCEMENT OF R TURN. POOR JUDGEMENT: TURNING TOWARD ACFT ON PARALLEL COURSE AT SAME ALT. DELAYING ABORTING OF TURN WHILE TRYING TO REESTABLISH VISUAL CONTACT WITH OTHER ACFT. BETTER CHOICES THAT WOULD HAVE PREVENTED SIT: DSND TO LOWER ALT PRIOR TO TURN WOULD GUARANTEE VERT SEPARATION AND IMPROVE ABILITY TO MAINTAIN VISUAL CONTACT DURING TURN (LOW WING ACFT). SLOW MY ACFT TO INCREASE SEPARATION BEFORE ATTEMPTING TURN. MAKE TURN TO L (270 DEG TURN) AWAY FROM OTHER ACFT. HAVING OTHER ACFT ON TWR FREQ IN CLASS D AIRSPACE WOULD ALSO MAKE HIM AWARE OF MY INTENTIONS.

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.