Narrative:

ATC informed both aircraft of approaching traffic and we began a visual search for the other aircraft. We were on an easterly heading with the autoplt tracking directly to the sju VOR in navigation mode, and the other traffic was wbound. When ATC issued a 010 degree heading to us to deconflict the situation, the first officer (PF) spun the heading knob into a left turn while still looking for traffic. He did not select heading mode so the aircraft did not turn. I called his attention to the problem and it was resolved, but the delay in turning allowed the separation to be reduced. I could no longer see in the direction of the traffic due to the bank angle. We were in a left turn and the traffic was at our 1-2 O'clock position. I then noticed that the first officer had only moved the heading bug to about a 030 degree heading and acted to turn it the rest of the way to our assigned heading. The first officer was completely involved with looking out the window, and when the TCASII issued a descending RA he took no action and said nothing. I took control of the aircraft and attempted to comply with the RA which was commanding approximately 2000 FPM rate of descent. I felt at the time that I did not dump the nose aggressively enough since the RA cleared before I established the commanded rate. On the other hand, one of the flight attendants later said that she had nearly been lifted off the deck. She might have been injured if I had really stuffed the nose down. The first officer later said that he had the traffic in sight when the RA was issued.

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Original NASA ASRS Text

Title: FLT CREW OF AT72 IS SLOW TO REACT TO TA AND A TCASII RA TO WHICH THEY DO NOT RESPOND IN A TIMELY FASHION.

Narrative: ATC INFORMED BOTH ACFT OF APCHING TFC AND WE BEGAN A VISUAL SEARCH FOR THE OTHER ACFT. WE WERE ON AN EASTERLY HDG WITH THE AUTOPLT TRACKING DIRECTLY TO THE SJU VOR IN NAV MODE, AND THE OTHER TFC WAS WBOUND. WHEN ATC ISSUED A 010 DEG HDG TO US TO DECONFLICT THE SIT, THE FO (PF) SPUN THE HDG KNOB INTO A L TURN WHILE STILL LOOKING FOR TFC. HE DID NOT SELECT HDG MODE SO THE ACFT DID NOT TURN. I CALLED HIS ATTN TO THE PROB AND IT WAS RESOLVED, BUT THE DELAY IN TURNING ALLOWED THE SEPARATION TO BE REDUCED. I COULD NO LONGER SEE IN THE DIRECTION OF THE TFC DUE TO THE BANK ANGLE. WE WERE IN A L TURN AND THE TFC WAS AT OUR 1-2 O'CLOCK POS. I THEN NOTICED THAT THE FO HAD ONLY MOVED THE HDG BUG TO ABOUT A 030 DEG HDG AND ACTED TO TURN IT THE REST OF THE WAY TO OUR ASSIGNED HDG. THE FO WAS COMPLETELY INVOLVED WITH LOOKING OUT THE WINDOW, AND WHEN THE TCASII ISSUED A DSNDING RA HE TOOK NO ACTION AND SAID NOTHING. I TOOK CTL OF THE ACFT AND ATTEMPTED TO COMPLY WITH THE RA WHICH WAS COMMANDING APPROX 2000 FPM RATE OF DSCNT. I FELT AT THE TIME THAT I DID NOT DUMP THE NOSE AGGRESSIVELY ENOUGH SINCE THE RA CLRED BEFORE I ESTABLISHED THE COMMANDED RATE. ON THE OTHER HAND, ONE OF THE FLT ATTENDANTS LATER SAID THAT SHE HAD NEARLY BEEN LIFTED OFF THE DECK. SHE MIGHT HAVE BEEN INJURED IF I HAD REALLY STUFFED THE NOSE DOWN. THE FO LATER SAID THAT HE HAD THE TFC IN SIGHT WHEN THE RA WAS ISSUED.

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.