B717 flight crew with ZKC at FL370 experienced TCASII RA with B737 during descent.

Attributes
ACN	624835
Time
Date	200407
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : cnu.vor
State Reference	KS
Altitude	msl bound lower : 33000 msl bound upper : 37000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc.artcc
Operator	common carrier : air carrier
Make Model Name	B717 (Formerly MD-95)
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level cruise : enroute altitude change descent : vacating altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zkc.artcc
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 7610 flight time type : 3612
ASRS Report	624835
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : nmac non adherence : clearance
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 200 vertical : 200
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cruising at FL370, received clearance to descend to FL290. Shortly thereafter, the controller gave clearance to expedite through FL330 on the way to FL290. Seconds after this clearance, we received a TCASII TA. This moment the controller (with urgency in his or her voice) issued the clearance to turn left 40 degrees. We then received a 'climb' RA. The captain (PF) disconnected the autoplt and began increasing pitch. Seeing no climb due to our heavy descent I assisted the captain in pulling the yoke back. We got a slight wing buffet as the engines spooled from idle. The last readout on the TCASII display (10 mi range) showed us on top of the threat aircraft within 200 ft separation and decreasing. We eventually began climbing until the 'clear of conflict' was heard on TCASII. At this point the captain queried the controllers regarding the incident and we completed our in-range duties.

Original NASA ASRS Text

Title: B717 FLT CREW WITH ZKC AT FL370 EXPERIENCED TCASII RA WITH B737 DURING DSCNT.

Narrative: CRUISING AT FL370, RECEIVED CLRNC TO DSND TO FL290. SHORTLY THEREAFTER, THE CTLR GAVE CLRNC TO EXPEDITE THROUGH FL330 ON THE WAY TO FL290. SECONDS AFTER THIS CLRNC, WE RECEIVED A TCASII TA. THIS MOMENT THE CTLR (WITH URGENCY IN HIS OR HER VOICE) ISSUED THE CLRNC TO TURN L 40 DEGS. WE THEN RECEIVED A 'CLB' RA. THE CAPT (PF) DISCONNECTED THE AUTOPLT AND BEGAN INCREASING PITCH. SEEING NO CLB DUE TO OUR HVY DSCNT I ASSISTED THE CAPT IN PULLING THE YOKE BACK. WE GOT A SLIGHT WING BUFFET AS THE ENGS SPOOLED FROM IDLE. THE LAST READOUT ON THE TCASII DISPLAY (10 MI RANGE) SHOWED US ON TOP OF THE THREAT ACFT WITHIN 200 FT SEPARATION AND DECREASING. WE EVENTUALLY BEGAN CLBING UNTIL THE 'CLR OF CONFLICT' WAS HEARD ON TCASII. AT THIS POINT THE CAPT QUERIED THE CTLRS REGARDING THE INCIDENT AND WE COMPLETED OUR IN-RANGE DUTIES.

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.