A B737-300 crew, departing ont, responded to a 'descend RA' from TCASII.

Attributes
ACN	544932
Time
Date	200204
Day	Thu
Local Time Of Day	1201 To 1800
Place
State Reference	CA
Altitude	msl single value : 16000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : prado 6
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : charter
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 135
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 90 flight time total : 11000 flight time type : 4000
ASRS Report	544932
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 12200 flight time type : 3100
ASRS Report	544937
Events
Anomaly	conflict : airborne critical non adherence : required legal separation non adherence : published procedure
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : took evasive action flight crew : exited adverse environment flight crew : overrode automation other
Miss Distance	horizontal : 6000 vertical : 1000
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

On departure from ont en route to dfw, on PRADO6 departure, socal issued climb to 16000 ft. Nearing turn to trm, TCASII TA sounded for traffic above at 1200 ft and to left. Delayed turn, clicked off autoplt and descended as RA alerted conflict and directed descent. Once visual contact made and vertical separation confirmed, we completed the turn to east and rejoined departure. Conflict aircraft was a 'jump service.' supplemental information from acn 544937: the first officer (PF) disconnected the autoplt, which automatically deselects VNAV and LNAV, at approximately 13500 ft and commenced a descent to 13000 ft. Socal was notified of our action. A visual sighting was made of the conflict aircraft, was a plane carrying parachute jumpers maneuvering 1000 ft above and 1 mi away.

Original NASA ASRS Text

Title: A B737-300 CREW, DEPARTING ONT, RESPONDED TO A 'DSND RA' FROM TCASII.

Narrative: ON DEP FROM ONT ENRTE TO DFW, ON PRADO6 DEP, SOCAL ISSUED CLB TO 16000 FT. NEARING TURN TO TRM, TCASII TA SOUNDED FOR TFC ABOVE AT 1200 FT AND TO L. DELAYED TURN, CLICKED OFF AUTOPLT AND DSNDED AS RA ALERTED CONFLICT AND DIRECTED DSCNT. ONCE VISUAL CONTACT MADE AND VERT SEPARATION CONFIRMED, WE COMPLETED THE TURN TO E AND REJOINED DEP. CONFLICT ACFT WAS A 'JUMP SVC.' SUPPLEMENTAL INFO FROM ACN 544937: THE FO (PF) DISCONNECTED THE AUTOPLT, WHICH AUTOMATICALLY DESELECTS VNAV AND LNAV, AT APPROX 13500 FT AND COMMENCED A DSCNT TO 13000 FT. SOCAL WAS NOTIFIED OF OUR ACTION. A VISUAL SIGHTING WAS MADE OF THE CONFLICT ACFT, WAS A PLANE CARRYING PARACHUTE JUMPERS MANEUVERING 1000 FT ABOVE AND 1 MI AWAY.

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.