Narrative:

On the gardner 2 arrival to bos flying the 111 degree right level at 6000' noticed lights of an aircraft flying approximately southwest direction. However due to strato type clouds, could not determine altitude although could tell there was a convergence of the 2 aircraft. About time to ask bos approach of other aircraft approach advised large transport Y to turn to 180 degree heading and medium large transport X (us) to turn to 180 degree heading descend immediately to 5000'. Believe other aircraft was large transport, we were an medium large transport model. Definite controller error, however he actually aggravated the situation by turning both aircraft to the same heading which put the wing up into the other aircraft. We kept the other aircraft in sight, however until sufficient distance separated us.

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Original NASA ASRS Text

Title: ACR-MLG FLT CREW SIGHTED AND TOOK ACTION TO AVOID AN ACR-LGT CONVERGING AT THE SAME ALT.

Narrative: ON THE GARDNER 2 ARR TO BOS FLYING THE 111 DEG R LEVEL AT 6000' NOTICED LIGHTS OF AN ACFT FLYING APPROX SW DIRECTION. HOWEVER DUE TO STRATO TYPE CLOUDS, COULD NOT DETERMINE ALT ALTHOUGH COULD TELL THERE WAS A CONVERGENCE OF THE 2 ACFT. ABOUT TIME TO ASK BOS APCH OF OTHER ACFT APCH ADVISED LGT Y TO TURN TO 180 DEG HDG AND MLG X (US) TO TURN TO 180 DEG HDG DSND IMMEDIATELY TO 5000'. BELIEVE OTHER ACFT WAS LGT, WE WERE AN MLG MODEL. DEFINITE CTLR ERROR, HOWEVER HE ACTUALLY AGGRAVATED THE SITUATION BY TURNING BOTH ACFT TO THE SAME HDG WHICH PUT THE WING UP INTO THE OTHER ACFT. WE KEPT THE OTHER ACFT IN SIGHT, HOWEVER UNTIL SUFFICIENT DISTANCE SEPARATED US.

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.