Narrative:

While on a heading of approximately 110 degrees and at FL290, I heard 2 radio xmissions that were unreadable. A third transmission was barely readable, and it was instructions from the controller to turn 20 degrees left. At that time, TCASII issued a TA and immediately afterwards an RA to 'descend, descend now.' a descent was begun, and at FL285 the TCASII commanded 'monitor vertical speed' and then 'clear of conflict.' these events were immediately reported to the controller and the aircraft was returned to FL290. In my opinion, language was not the problem. I think poor equipment used by the controller or improper use of the ground equipment made the transmission unreadable.

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Original NASA ASRS Text

Title: INTL B727-200 CREW RESPONDED TO TCASII RA AT FL290.

Narrative: WHILE ON A HDG OF APPROX 110 DEGS AND AT FL290, I HEARD 2 RADIO XMISSIONS THAT WERE UNREADABLE. A THIRD XMISSION WAS BARELY READABLE, AND IT WAS INSTRUCTIONS FROM THE CTLR TO TURN 20 DEGS L. AT THAT TIME, TCASII ISSUED A TA AND IMMEDIATELY AFTERWARDS AN RA TO 'DSND, DSND NOW.' A DSCNT WAS BEGUN, AND AT FL285 THE TCASII COMMANDED 'MONITOR VERT SPD' AND THEN 'CLR OF CONFLICT.' THESE EVENTS WERE IMMEDIATELY RPTED TO THE CTLR AND THE ACFT WAS RETURNED TO FL290. IN MY OPINION, LANGUAGE WAS NOT THE PROB. I THINK POOR EQUIP USED BY THE CTLR OR IMPROPER USE OF THE GND EQUIP MADE THE XMISSION UNREADABLE.

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.