A boeing 737-300 flight crew received a TCASII RA on departure from ont.

Attributes
ACN	443176
Time
Date	199907
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : trm.vortac
State Reference	CA
Altitude	msl bound lower : 13000 msl bound upper : 15000
Environment
Flight Conditions	VMC
Light	Daylight
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
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : prado
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : sct.tracon
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 80 flight time total : 7000 flight time type : 15
ASRS Report	443012
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer observation : company check pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 12400 flight time type : 4500
ASRS Report	443176
Events
Independent Detector	aircraft equipment : tcas
Resolutory Action	none taken : anomaly accepted
Miss Distance	horizontal : 15700 vertical : 500
Supplementary
Problem Areas	Environmental Factor Airspace Structure Aircraft
Primary Problem	Ambiguous

Narrative:

While climbing out of ont on the prado SID, passing through 13500 ft MSL an RA was received. The TCASII showed traffic at 2 O'clock position, and 14000 ft MSL. The guidance 'green arc' showed a descent and the aural warning said 'descend, descend.' ATC was immediately advised of the RA and our descent. We had just been cleared to a higher altitude. The PF also turned away from the traffic. This traffic had not been previously called out by ATC. ATC then said we had VFR traffic 3 mi at 14000 ft MSL with parachute jumping in progress. When we were at 13000 ft MSL and clear of that traffic ATC told us to climb immediately to 15000 ft MSL, which we did. Apparently there was some other traffic in the area.

Original NASA ASRS Text

Title: A BOEING 737-300 FLC RECEIVED A TCASII RA ON DEP FROM ONT.

Narrative: WHILE CLBING OUT OF ONT ON THE PRADO SID, PASSING THROUGH 13500 FT MSL AN RA WAS RECEIVED. THE TCASII SHOWED TFC AT 2 O'CLOCK POS, AND 14000 FT MSL. THE GUIDANCE 'GREEN ARC' SHOWED A DSCNT AND THE AURAL WARNING SAID 'DSND, DSND.' ATC WAS IMMEDIATELY ADVISED OF THE RA AND OUR DSCNT. WE HAD JUST BEEN CLRED TO A HIGHER ALT. THE PF ALSO TURNED AWAY FROM THE TFC. THIS TFC HAD NOT BEEN PREVIOUSLY CALLED OUT BY ATC. ATC THEN SAID WE HAD VFR TFC 3 MI AT 14000 FT MSL WITH PARACHUTE JUMPING IN PROGRESS. WHEN WE WERE AT 13000 FT MSL AND CLR OF THAT TFC ATC TOLD US TO CLB IMMEDIATELY TO 15000 FT MSL, WHICH WE DID. APPARENTLY THERE WAS SOME OTHER TFC IN THE AREA.

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.