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Evasive action descent. TCASII gave a timely warning to the flight crew and they stopped climb and descended to avoid traffic.
| Attributes | |
| ACN | 302532 |
| Time | |
| Date | 199504 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : pdz airport : ont |
| State Reference | CA |
| Altitude | msl bound lower : 8000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ont tower : pdk |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 5000 |
| ASRS Report | 302532 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 300 vertical : 1000 |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Departing ont, ca, on the prado 4 SID, we were given climb clearance from 7000 ft to 14000 ft. Passing 8000 ft we got a TCASII RA which we followed and returned to 8000 ft while advising the controller of our course of action. A small aircraft passed overhead at 9000 ft heading in the opposite direction. Had we been in IMC without TCASII there probably would have been a midair collision.
Original NASA ASRS Text
Title: EVASIVE ACTION DSCNT. TCASII GAVE A TIMELY WARNING TO THE FLC AND THEY STOPPED CLB AND DSNDED TO AVOID TFC.
Narrative: DEPARTING ONT, CA, ON THE PRADO 4 SID, WE WERE GIVEN CLB CLRNC FROM 7000 FT TO 14000 FT. PASSING 8000 FT WE GOT A TCASII RA WHICH WE FOLLOWED AND RETURNED TO 8000 FT WHILE ADVISING THE CTLR OF OUR COURSE OF ACTION. A SMALL ACFT PASSED OVERHEAD AT 9000 FT HDG IN THE OPPOSITE DIRECTION. HAD WE BEEN IN IMC WITHOUT TCASII THERE PROBABLY WOULD HAVE BEEN A MIDAIR COLLISION.
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.