B737 received TCASII RA during ATC turn and descent instructions.

Attributes
ACN	582683
Time
Date	200305
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zid.artcc
State Reference	IN
Altitude	msl single value : 19000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zid.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 13000 flight time type : 4500
ASRS Report	582683
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action flight crew : exited adverse environment
Miss Distance	horizontal : 18000 vertical : 100
Supplementary
Problem Areas	ATC Human Performance Aircraft
Primary Problem	Ambiguous

Narrative:

During arrival to cvg, we were descending on an assigned heading with ATC center. We received a frequency change to ZID. Upon contact, we were given instructions to make an immediate left turn change to approximately 90 degrees. Indianapolis called out traffic at 12 O'clock position below and requested we expedite descent to 11000 ft. We were in clouds and did not have a visual. We complied with the heading and expedited descent instructions. We then received a TA, followed by an RA requiring a climb. We performed the climb maneuver, notified ATC of the climb, and received a 'clear of conflict' TCASII advisory. We were now clear of clouds and could see an rj at 12 O'clock position below us, passing left to right. The remaining descent and arrival was normal, and the flight attendants reported the cabin and passenger were secure.

Original NASA ASRS Text

Title: B737 RECEIVED TCASII RA DURING ATC TURN AND DSCNT INSTRUCTIONS.

Narrative: DURING ARR TO CVG, WE WERE DSNDING ON AN ASSIGNED HEADING WITH ATC CTR. WE RECEIVED A FREQ CHANGE TO ZID. UPON CONTACT, WE WERE GIVEN INSTRUCTIONS TO MAKE AN IMMEDIATE L TURN CHANGE TO APPROX 90 DEGS. INDIANAPOLIS CALLED OUT TFC AT 12 O'CLOCK POS BELOW AND REQUESTED WE EXPEDITE DSCNT TO 11000 FT. WE WERE IN CLOUDS AND DID NOT HAVE A VISUAL. WE COMPLIED WITH THE HEADING AND EXPEDITED DSCNT INSTRUCTIONS. WE THEN RECEIVED A TA, FOLLOWED BY AN RA REQUIRING A CLB. WE PERFORMED THE CLB MANEUVER, NOTIFIED ATC OF THE CLB, AND RECEIVED A 'CLR OF CONFLICT' TCASII ADVISORY. WE WERE NOW CLR OF CLOUDS AND COULD SEE AN RJ AT 12 O'CLOCK POS BELOW US, PASSING L TO R. THE REMAINING DSCNT AND ARR WAS NORMAL, AND THE FLT ATTENDANTS RPTED THE CABIN AND PAX WERE SECURE.

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.