Narrative:

First officer flying aircraft, descending toward crestview, fl VORTAC. We leveled at assigned 14000 ft for conflicting traffic. ZJX called E-120 traffic at 13000 ft, 1 O'clock. Captain reported 'looking,' but did not acknowledge visual contact. We noted the traffic on TCASII, but did not immediately see the brasilia. ZJX reported our position to the E-120 which reported us in sight. Center cleared the E-120 through our altitude to maintain visual separation. First officer and I were uneasy because we could not determine the brasilia's exact direction of flight while TCASII showed nearly constant bearing, fast closing range. As soon as E-120 began climb, TCASII sounded 'traffic' followed shortly by an RA. The brasilia was now out of the captain's field of view (low, right of aircraft). The first officer visually tracked the brasilia and chose to ignore the 'RA' - satisfied that separation could be maintained.with no verbal cues from the first officer, when the 'RA' went to the next level of warning, the captain took control of the aircraft and complied with the 'RA' to climb at 2000 FPM while banking aircraft left, away from the brasilia (also in a left turn). The 'RA' stopped and aircraft was leveled at 14700 ft. We notified center of the TCASII event and reported returning to 14000 ft. First officer estimated closest point of approach - 1/2 mi. Maneuver was abrupt enough to upset several passenger. Simple see and avoid maneuver can be complicated by loud and increasing TCASII warning. PF saw conflict aircraft - captain had only TCASII information. Good communication between captain and first officer was nearly impossible due to TCASII warning volume level. Trying to mix visual information with TCASII information resulted in larger and larger 'RA' commands prompting a, possibly, too abrupt evasive maneuver. Center was totally silent during entire 'RA' event.

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Original NASA ASRS Text

Title: COCKPIT MGMNT - THE FO DID NOT TELL THE CAPT THAT HE HAD THE OTHER ACFT (IN A VFR CLB) IN SIGHT SO THE CAPT FOLLOWED THE TCASII 'RA' AND CLBED UNNECESSARILY.

Narrative: FO FLYING ACFT, DSNDING TOWARD CRESTVIEW, FL VORTAC. WE LEVELED AT ASSIGNED 14000 FT FOR CONFLICTING TFC. ZJX CALLED E-120 TFC AT 13000 FT, 1 O'CLOCK. CAPT RPTED 'LOOKING,' BUT DID NOT ACKNOWLEDGE VISUAL CONTACT. WE NOTED THE TFC ON TCASII, BUT DID NOT IMMEDIATELY SEE THE BRASILIA. ZJX RPTED OUR POS TO THE E-120 WHICH RPTED US IN SIGHT. CTR CLRED THE E-120 THROUGH OUR ALT TO MAINTAIN VISUAL SEPARATION. FO AND I WERE UNEASY BECAUSE WE COULD NOT DETERMINE THE BRASILIA'S EXACT DIRECTION OF FLT WHILE TCASII SHOWED NEARLY CONSTANT BEARING, FAST CLOSING RANGE. AS SOON AS E-120 BEGAN CLB, TCASII SOUNDED 'TFC' FOLLOWED SHORTLY BY AN RA. THE BRASILIA WAS NOW OUT OF THE CAPT'S FIELD OF VIEW (LOW, R OF ACFT). THE FO VISUALLY TRACKED THE BRASILIA AND CHOSE TO IGNORE THE 'RA' - SATISFIED THAT SEPARATION COULD BE MAINTAINED.WITH NO VERBAL CUES FROM THE FO, WHEN THE 'RA' WENT TO THE NEXT LEVEL OF WARNING, THE CAPT TOOK CTL OF THE ACFT AND COMPLIED WITH THE 'RA' TO CLB AT 2000 FPM WHILE BANKING ACFT L, AWAY FROM THE BRASILIA (ALSO IN A L TURN). THE 'RA' STOPPED AND ACFT WAS LEVELED AT 14700 FT. WE NOTIFIED CTR OF THE TCASII EVENT AND RPTED RETURNING TO 14000 FT. FO ESTIMATED CLOSEST POINT OF APCH - 1/2 MI. MANEUVER WAS ABRUPT ENOUGH TO UPSET SEVERAL PAX. SIMPLE SEE AND AVOID MANEUVER CAN BE COMPLICATED BY LOUD AND INCREASING TCASII WARNING. PF SAW CONFLICT ACFT - CAPT HAD ONLY TCASII INFO. GOOD COM BTWN CAPT AND FO WAS NEARLY IMPOSSIBLE DUE TO TCASII WARNING VOLUME LEVEL. TRYING TO MIX VISUAL INFO WITH TCASII INFO RESULTED IN LARGER AND LARGER 'RA' COMMANDS PROMPTING A, POSSIBLY, TOO ABRUPT EVASIVE MANEUVER. CTR WAS TOTALLY SILENT DURING ENTIRE 'RA' EVENT.

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.