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An A320 pilot reports responding to a climb TCAS RA for a non reported C152 while level at 3000 ft talking with socal on the ont prado 6 SID.
| Attributes | |
| ACN | 696776 |
| Time | |
| Date | 200604 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ont.airport |
| State Reference | CA |
| Altitude | msl single value : 3000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial |
| Route In Use | departure sid : prado.6 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Cessna 152 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 696776 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical non adherence : clearance other spatial deviation |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : exited adverse environment flight crew : took precautionary avoidance action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Airspace Structure |
| Primary Problem | Airspace Structure |
Narrative:
On initial departure from ont on the prado 6 SID we were instructed by ont tower to maintain 3000 ft until further advised. Leveling at 3000 ft and talking now to socal departure control; we were instructed to look for VFR traffic at the 12 O'clock position; 3500 ft; passing left to right. While looking for that traffic; we noticed what looked to be a C152 at about our 12:30 O'clock position; low (he was 500 ft below us per the TCAS readout); traveling from left to right. TCAS indicated that the C152 was climbing but had not yet issued either a TA or an RA. Wanting to keep a visual on that aircraft as it started disappearing under the nose; I made a left turn to pass behind the C152 and maintain visual contact with him. As I was making the slight turn; TCAS issued a climb advisory which I complied with. We passed behind and above subject traffic. Socal asked if we had turned off course to avoid the traffic and we responded in the affirmative. She then asked if we had received an RA from TCAS. We again answered in the affirmative. She indicated to us that she had not been talking to the C152. The initial VFR aircraft at 3500 ft was no longer a factor and we were cleared to climb to a higher altitude and resume our own navigation via the prado 6 departure. Obviously; this could have been prevented had the C152 been talking to socal and working within the system which; apparently; he wasn't.
Original NASA ASRS Text
Title: AN A320 PLT RPTS RESPONDING TO A CLB TCAS RA FOR A NON RPTED C152 WHILE LEVEL AT 3000 FT TALKING WITH SOCAL ON THE ONT PRADO 6 SID.
Narrative: ON INITIAL DEP FROM ONT ON THE PRADO 6 SID WE WERE INSTRUCTED BY ONT TWR TO MAINTAIN 3000 FT UNTIL FURTHER ADVISED. LEVELING AT 3000 FT AND TALKING NOW TO SOCAL DEP CTL; WE WERE INSTRUCTED TO LOOK FOR VFR TFC AT THE 12 O'CLOCK POS; 3500 FT; PASSING L TO R. WHILE LOOKING FOR THAT TFC; WE NOTICED WHAT LOOKED TO BE A C152 AT ABOUT OUR 12:30 O'CLOCK POS; LOW (HE WAS 500 FT BELOW US PER THE TCAS READOUT); TRAVELING FROM L TO R. TCAS INDICATED THAT THE C152 WAS CLBING BUT HAD NOT YET ISSUED EITHER A TA OR AN RA. WANTING TO KEEP A VISUAL ON THAT ACFT AS IT STARTED DISAPPEARING UNDER THE NOSE; I MADE A L TURN TO PASS BEHIND THE C152 AND MAINTAIN VISUAL CONTACT WITH HIM. AS I WAS MAKING THE SLIGHT TURN; TCAS ISSUED A CLB ADVISORY WHICH I COMPLIED WITH. WE PASSED BEHIND AND ABOVE SUBJECT TFC. SOCAL ASKED IF WE HAD TURNED OFF COURSE TO AVOID THE TFC AND WE RESPONDED IN THE AFFIRMATIVE. SHE THEN ASKED IF WE HAD RECEIVED AN RA FROM TCAS. WE AGAIN ANSWERED IN THE AFFIRMATIVE. SHE INDICATED TO US THAT SHE HAD NOT BEEN TALKING TO THE C152. THE INITIAL VFR ACFT AT 3500 FT WAS NO LONGER A FACTOR AND WE WERE CLRED TO CLB TO A HIGHER ALT AND RESUME OUR OWN NAV VIA THE PRADO 6 DEP. OBVIOUSLY; THIS COULD HAVE BEEN PREVENTED HAD THE C152 BEEN TALKING TO SOCAL AND WORKING WITHIN THE SYS WHICH; APPARENTLY; HE WASN'T.
Data retrieved from NASA's ASRS site as of January 2009 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.