EMB145 crew got a TCASII RA in stl class B airspace.

Attributes
ACN	469407
Time
Date	200004
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl.airport
State Reference	MO
Altitude	msl bound lower : 5700 msl bound upper : 6000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : t75.tracon tower : phl.tower
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : vacating altitude
Route In Use	departure : on vectors
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : t75.tracon
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
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 : 201 flight time total : 3127 flight time type : 320
ASRS Report	469407
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : company policies non adherence : far non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action
Miss Distance	vertical : 300
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Before departing stl, we were given a clearance by stl clearance delivery to maintain 5000 ft. After departing stl en route to xna, stl departure cleared us to 6000 ft MSL and to maintain a heading of 210 degrees. During our climb out, the departure controller advised us of traffic at 2 O'clock position and 7000 ft. Since we were in IMC, and I (the first officer) was the PF, the captain monitored the traffic on the TCASII. As we continued our climb to 6000 ft MSL, the traffic on the TCASII changed from a TA to an RA and it was obvious that the other aircraft was not at 7000 ft MSL. At approximately 5700 ft MSL, the captain took control of our aircraft and put it in a right turning descent. When we were clear of the other aircraft, we continued our climb back to 6000 ft MSL and the remainder of the flight continued uneventfully.

Original NASA ASRS Text

Title: EMB145 CREW GOT A TCASII RA IN STL CLASS B AIRSPACE.

Narrative: BEFORE DEPARTING STL, WE WERE GIVEN A CLRNC BY STL CLRNC DELIVERY TO MAINTAIN 5000 FT. AFTER DEPARTING STL ENRTE TO XNA, STL DEP CLRED US TO 6000 FT MSL AND TO MAINTAIN A HDG OF 210 DEGS. DURING OUR CLBOUT, THE DEP CTLR ADVISED US OF TFC AT 2 O'CLOCK POS AND 7000 FT. SINCE WE WERE IN IMC, AND I (THE FO) WAS THE PF, THE CAPT MONITORED THE TFC ON THE TCASII. AS WE CONTINUED OUR CLB TO 6000 FT MSL, THE TFC ON THE TCASII CHANGED FROM A TA TO AN RA AND IT WAS OBVIOUS THAT THE OTHER ACFT WAS NOT AT 7000 FT MSL. AT APPROX 5700 FT MSL, THE CAPT TOOK CTL OF OUR ACFT AND PUT IT IN A R TURNING DSCNT. WHEN WE WERE CLR OF THE OTHER ACFT, WE CONTINUED OUR CLB BACK TO 6000 FT MSL AND THE REMAINDER OF THE FLT CONTINUED UNEVENTFULLY.

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.