A B737-300 flight crew experiences a TCASII RA on climb.

Attributes
ACN	577278
Time
Date	200303
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : dbl.vor
State Reference	CO
Altitude	msl single value : 23800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zdv.artcc
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 : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 17000 flight time type : 10000
ASRS Report	577278
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne critical
Independent Detector	aircraft equipment : tcas
Resolutory Action	flight crew : took evasive action
Supplementary
Problem Areas	Aircraft ATC Human Performance
Primary Problem	Ambiguous

Narrative:

Climbing through 23600 ft for FL240. TCASII called 'traffic' then at 23800 ft at 600 FPM, TCASII called 'descend' and commanded 2000 FPM descent. First officer disconnected autoplt and responded. Light twin passed off our left about 4000 ft horizontal and 1400 ft vertical. When clear, climbed to FL240.

Original NASA ASRS Text

Title: A B737-300 FLT CREW EXPERIENCES A TCASII RA ON CLB.

Narrative: CLBING THROUGH 23600 FT FOR FL240. TCASII CALLED 'TFC' THEN AT 23800 FT AT 600 FPM, TCASII CALLED 'DSND' AND COMMANDED 2000 FPM DSCNT. FO DISCONNECTED AUTOPLT AND RESPONDED. LIGHT TWIN PASSED OFF OUR L ABOUT 4000 FT HORIZ AND 1400 FT VERT. WHEN CLR, CLBED TO FL240.

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.