Narrative:

After starting our descent into miami, we were told by ATC to turn left 20 degrees. I acknowledged the clearance and repeated 20 degrees left. At about the same time we were starting to review the new approach plate for runway 8 in mia and after I read back the clearance to turn 20 degrees left, I went back to reviewing the approach plate. The PF mistakenly turned the heading knob 20 degrees right and I didn't catch his mistake because I was heads down. At about FL340 in the descent, ATC said 'air carrier xyz, I said 20 degrees left, not 20 degrees right. Level off at FL330 and turn left now to 180 degrees.' we complied with the new clearance immediately but ZMA had to level a climbing air carrier jet at FL320 to avoid a potential conflict. We saw the other jet pass about 6 mi off to our north and west as we were turning to a southerly heading. The flight then continued normally to an uneventful conclusion. In retrospect, I should have doublechked that the clearance was complied with before I got distraction by the review of the new approach plate. Supplemental information from acn 592910: we were reviewing NOTAMS and new procedures for landing on the new runway 8/26 at mia. In the turn, we received 1 TA on TCASII ('traffic, traffic'). The TCASII displayed an aircraft 1000 ft below passing left to right 7-8 NM off the nose of our aircraft.

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Original NASA ASRS Text

Title: A B767 FLT CREW RPTED A HEARBACK READBACK ISSUE WITH ZMA, AND BTWN EACH OTHER, WHICH CAUSED A TRACK DEV.

Narrative: AFTER STARTING OUR DSCNT INTO MIAMI, WE WERE TOLD BY ATC TO TURN L 20 DEGS. I ACKNOWLEDGED THE CLRNC AND REPEATED 20 DEGS L. AT ABOUT THE SAME TIME WE WERE STARTING TO REVIEW THE NEW APCH PLATE FOR RWY 8 IN MIA AND AFTER I READ BACK THE CLRNC TO TURN 20 DEGS L, I WENT BACK TO REVIEWING THE APCH PLATE. THE PF MISTAKENLY TURNED THE HDG KNOB 20 DEGS R AND I DIDN'T CATCH HIS MISTAKE BECAUSE I WAS HEADS DOWN. AT ABOUT FL340 IN THE DSCNT, ATC SAID 'ACR XYZ, I SAID 20 DEGS L, NOT 20 DEGS R. LEVEL OFF AT FL330 AND TURN L NOW TO 180 DEGS.' WE COMPLIED WITH THE NEW CLRNC IMMEDIATELY BUT ZMA HAD TO LEVEL A CLBING ACR JET AT FL320 TO AVOID A POTENTIAL CONFLICT. WE SAW THE OTHER JET PASS ABOUT 6 MI OFF TO OUR N AND W AS WE WERE TURNING TO A SOUTHERLY HDG. THE FLT THEN CONTINUED NORMALLY TO AN UNEVENTFUL CONCLUSION. IN RETROSPECT, I SHOULD HAVE DOUBLECHKED THAT THE CLRNC WAS COMPLIED WITH BEFORE I GOT DISTR BY THE REVIEW OF THE NEW APCH PLATE. SUPPLEMENTAL INFO FROM ACN 592910: WE WERE REVIEWING NOTAMS AND NEW PROCS FOR LNDG ON THE NEW RWY 8/26 AT MIA. IN THE TURN, WE RECEIVED 1 TA ON TCASII ('TFC, TFC'). THE TCASII DISPLAYED AN ACFT 1000 FT BELOW PASSING L TO R 7-8 NM OFF THE NOSE OF OUR ACFT.

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.