Flight crew of jetstream 4100 receives TCASII traffic alert followed by TCASII RA near cgi.

Attributes
ACN	426162
Time
Date	199901
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : cgi
State Reference	MO
Altitude	msl bound lower : 10000 msl bound upper : 10600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi
Experience	flight time last 90 days : 138 flight time total : 4935 flight time type : 1867
ASRS Report	426162
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 300
Supplementary
Air Traffic Incident	other

Narrative:

While on the qball arrival (approximately 20-30 NM northwest of cgi) ZKC reported VFR traffic at 2 O'clock. Traffic was indicated on TCASII and finally visually acquired. The traffic appeared to parallel our flight path while descending 300 ft below our altitude. The traffic then turned toward us initiating the TCASII RA to climb. TA/RA action was initiated at 10000 ft and terminated at 10600 ft. We cleared the traffic and began descent back to 10000 ft and continued descent to 8000 ft per crossing clearance. It also needs to be mentioned that our RA action also caused an aircraft inbound overflying us to climb as well.

Original NASA ASRS Text

Title: FLC OF JETSTREAM 4100 RECEIVES TCASII TFC ALERT FOLLOWED BY TCASII RA NEAR CGI.

Narrative: WHILE ON THE QBALL ARR (APPROX 20-30 NM NW OF CGI) ZKC RPTED VFR TFC AT 2 O'CLOCK. TFC WAS INDICATED ON TCASII AND FINALLY VISUALLY ACQUIRED. THE TFC APPEARED TO PARALLEL OUR FLT PATH WHILE DSNDING 300 FT BELOW OUR ALT. THE TFC THEN TURNED TOWARD US INITIATING THE TCASII RA TO CLB. TA/RA ACTION WAS INITIATED AT 10000 FT AND TERMINATED AT 10600 FT. WE CLRED THE TFC AND BEGAN DSCNT BACK TO 10000 FT AND CONTINUED DSCNT TO 8000 FT PER XING CLRNC. IT ALSO NEEDS TO BE MENTIONED THAT OUR RA ACTION ALSO CAUSED AN ACFT INBOUND OVERFLYING US TO CLB AS WELL.

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.