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B737-300 captain reports TCAS RA due to an encounter with an unidentified small aircraft shortly after takeoff at ont.
| Attributes | |
| ACN | 736771 |
| Time | |
| Date | 200704 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pdz.vortac |
| State Reference | CA |
| Altitude | msl single value : 4000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon tower : zzzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : ont.tower |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial descent : approach |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 736771 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical |
| Independent Detector | aircraft equipment : tcas |
| Resolutory Action | flight crew : took evasive action |
| Miss Distance | horizontal : 500 vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
In turn to 130 degrees on departure; we had an RA to descend to avoid a GA traffic entering pattern at ont. We had to descend to about 1500 ft AGL to comply with RA. We were in process of checking in with departure when we received the RA. We started a climb when our aircraft was clear of conflict and informed departure of our RA situation. I feel the TCAS RA prevented a midair. The day prior I flew an aircraft with the TCAS on MEL. TCAS should never be on MEL -- it saves lives.
Original NASA ASRS Text
Title: B737-300 CAPTAIN REPORTS TCAS RA DUE TO AN ENCOUNTER WITH AN UNIDENTIFIED SMALL ACFT SHORTLY AFTER TKOF AT ONT.
Narrative: IN TURN TO 130 DEGS ON DEP; WE HAD AN RA TO DSND TO AVOID A GA TFC ENTERING PATTERN AT ONT. WE HAD TO DSND TO ABOUT 1500 FT AGL TO COMPLY WITH RA. WE WERE IN PROCESS OF CHKING IN WITH DEP WHEN WE RECEIVED THE RA. WE STARTED A CLB WHEN OUR ACFT WAS CLR OF CONFLICT AND INFORMED DEP OF OUR RA SITUATION. I FEEL THE TCAS RA PREVENTED A MIDAIR. THE DAY PRIOR I FLEW AN ACFT WITH THE TCAS ON MEL. TCAS SHOULD NEVER BE ON MEL -- IT SAVES LIVES.
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.