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MD11 flight crew initiate evasive TCASII descent maneuver on approach to oak. Nct controller advises after event was reported that traffic 'just popped up.'
| Attributes | |
| ACN | 506970 |
| Time | |
| Date | 200104 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : oak.airport |
| State Reference | CA |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 25000 flight time type : 3000 |
| ASRS Report | 506970 |
| Events | |
| Anomaly | conflict : airborne critical |
| Resolutory Action | flight crew : took evasive action |
| Supplementary | |
| Problem Areas | ATC Human Performance Environmental Factor |
| Primary Problem | ATC Human Performance |
Narrative:
We were in level flight on radar vectors to oakland when we received a TCASII RA to descend. I descended approximately 100 ft and the TCASII said 'clear of traffic.' I told the first officer to inform ATC. Bay approach informed us that the traffic 'just popped up. No further action was taken.
Original NASA ASRS Text
Title: MD11 FLT CREW INITIATE EVASIVE TCASII DSCNT MANEUVER ON APCH TO OAK. NCT CTLR ADVISES AFTER EVENT WAS RPTED THAT TFC 'JUST POPPED UP.'
Narrative: WE WERE IN LEVEL FLT ON RADAR VECTORS TO OAKLAND WHEN WE RECEIVED A TCASII RA TO DSND. I DSNDED APPROX 100 FT AND THE TCASII SAID 'CLR OF TFC.' I TOLD THE FO TO INFORM ATC. BAY APCH INFORMED US THAT THE TFC 'JUST POPPED UP. NO FURTHER ACTION WAS TAKEN.
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.