Narrative:

Departed ont on runway 26R. Cleared to psp via prado 2 departure, thermal transition to maintain 7000 ft. Passing the PAR (paradise) VOR and outbound on the 130 degree radial we received several traffic advisories from ont departure control. The controller was particularly concerned about our knowing of traffic at 7500 ft since we were cleared to 7000 ft. None of the traffic was observed visually by us. Checking the TCAS quickly, I noticed 1 target (solid blue diamond) about 10 O'clock high at 2-3 mi distant. Flight visibility was 2-3 mi with haze. This traffic had not been mentioned to us by the controller. We were passing about 4000 ft at the time and increasing speed through about 220 KTS, and as I looked up from the TCAS I saw the target visually. Immediately made a power reduction and began to decrease the climb attitude. Instantaneously, the TCAS announced 'traffic, traffic' as the target symbol turned to a traffic advisory (TA). Visually the traffic was moving to 11 O'clock within 1-2 mi and on an intersecting course. Upon hearing the aural warning, I made a second power reduction and again decreased the pitch attitude. Again, instantaneously, the TCAS changed to a resolution advisory (RA) and commanded 'reduce climb'. By this time I was already in a descent as the traffic, on a southwest heading, passed over us about 500-600 ft higher and at about 5000 ft. The first officer was communicating with departure control reporting the traffic. The controller had not seen the traffic on his scope until it had become an RA and not in time to advise us. He was not in radio contact with the aircraft. Throughout this situation the first officer and the flight engineer maintained visual sighting and assisted in calling out visual and TCAS information. We may have been able to eventually sight the traffic without the aid of the TCAS, however, the TCAS gave warning early enough for avoidance without any violent maneuvers. No passenger or flight attendants were aware of this event. We estimate that continuing in normal climb attitude we may have passed over the traffic but probably within 200 ft. Thank you TCAS.

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Original NASA ASRS Text

Title: FLC OF LGT RECEIVED TCASII ALERT AND RA IN CLB. LEVELED AND SAW TFC PASS CLOSELY OVERHEAD.

Narrative: DEPARTED ONT ON RWY 26R. CLRED TO PSP VIA PRADO 2 DEP, THERMAL TRANSITION TO MAINTAIN 7000 FT. PASSING THE PAR (PARADISE) VOR AND OUTBOUND ON THE 130 DEG RADIAL WE RECEIVED SEVERAL TFC ADVISORIES FROM ONT DEP CTL. THE CTLR WAS PARTICULARLY CONCERNED ABOUT OUR KNOWING OF TFC AT 7500 FT SINCE WE WERE CLRED TO 7000 FT. NONE OF THE TFC WAS OBSERVED VISUALLY BY US. CHKING THE TCAS QUICKLY, I NOTICED 1 TARGET (SOLID BLUE DIAMOND) ABOUT 10 O'CLOCK HIGH AT 2-3 MI DISTANT. FLT VISIBILITY WAS 2-3 MI WITH HAZE. THIS TFC HAD NOT BEEN MENTIONED TO US BY THE CTLR. WE WERE PASSING ABOUT 4000 FT AT THE TIME AND INCREASING SPD THROUGH ABOUT 220 KTS, AND AS I LOOKED UP FROM THE TCAS I SAW THE TARGET VISUALLY. IMMEDIATELY MADE A PWR REDUCTION AND BEGAN TO DECREASE THE CLB ATTITUDE. INSTANTANEOUSLY, THE TCAS ANNOUNCED 'TFC, TFC' AS THE TARGET SYMBOL TURNED TO A TFC ADVISORY (TA). VISUALLY THE TFC WAS MOVING TO 11 O'CLOCK WITHIN 1-2 MI AND ON AN INTERSECTING COURSE. UPON HEARING THE AURAL WARNING, I MADE A SECOND PWR REDUCTION AND AGAIN DECREASED THE PITCH ATTITUDE. AGAIN, INSTANTANEOUSLY, THE TCAS CHANGED TO A RESOLUTION ADVISORY (RA) AND COMMANDED 'REDUCE CLB'. BY THIS TIME I WAS ALREADY IN A DSCNT AS THE TFC, ON A SW HDG, PASSED OVER US ABOUT 500-600 FT HIGHER AND AT ABOUT 5000 FT. THE FO WAS COMMUNICATING WITH DEP CTL RPTING THE TFC. THE CTLR HAD NOT SEEN THE TFC ON HIS SCOPE UNTIL IT HAD BECOME AN RA AND NOT IN TIME TO ADVISE US. HE WAS NOT IN RADIO CONTACT WITH THE ACFT. THROUGHOUT THIS SITUATION THE FO AND THE FLT ENGINEER MAINTAINED VISUAL SIGHTING AND ASSISTED IN CALLING OUT VISUAL AND TCAS INFO. WE MAY HAVE BEEN ABLE TO EVENTUALLY SIGHT THE TFC WITHOUT THE AID OF THE TCAS, HOWEVER, THE TCAS GAVE WARNING EARLY ENOUGH FOR AVOIDANCE WITHOUT ANY VIOLENT MANEUVERS. NO PAX OR FLT ATTENDANTS WERE AWARE OF THIS EVENT. WE ESTIMATE THAT CONTINUING IN NORMAL CLB ATTITUDE WE MAY HAVE PASSED OVER THE TFC BUT PROBABLY WITHIN 200 FT. THANK YOU TCAS.

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.