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A B727 at 12000 ft got an RA and climbed to 12500 ft to avoid conflict with opposite direction VFR traffic.
| Attributes | |
| ACN | 709759 |
| Time | |
| Date | 200609 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : fat.airport |
| State Reference | CA |
| Altitude | msl bound lower : 12000 msl bound upper : 12500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : nct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 30 flight time total : 4000 flight time type : 750 |
| ASRS Report | 709759 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Level at 12000 ft on radar vector from norcal approach. Approach controller advised us of VFR traffic at 11500 ft. No visual contact but as traffic neared TCAS showed it only 200 ft below our level flight of 12000 ft. RA activated and commanded climb. First officer; as PF; disconnected autoplt and complied with RA. During RA maneuver; I observed traffic at 12 O'clock position and what appeared to be our assigned altitude of 12000 ft. After clear of traffic; we descend back to assigned altitude; and informed norcal approach of our deviation. Maximum altitude gained was to 12500 ft. After reporting RA to norcal approach they switched us over to next frequency.
Original NASA ASRS Text
Title: A B727 AT 12000 FT GOT AN RA AND CLBED TO 12500 FT TO AVOID CONFLICT WITH OPPOSITE DIRECTION VFR TFC.
Narrative: LEVEL AT 12000 FT ON RADAR VECTOR FROM NORCAL APCH. APCH CTLR ADVISED US OF VFR TFC AT 11500 FT. NO VISUAL CONTACT BUT AS TFC NEARED TCAS SHOWED IT ONLY 200 FT BELOW OUR LEVEL FLT OF 12000 FT. RA ACTIVATED AND COMMANDED CLB. FO; AS PF; DISCONNECTED AUTOPLT AND COMPLIED WITH RA. DURING RA MANEUVER; I OBSERVED TFC AT 12 O'CLOCK POS AND WHAT APPEARED TO BE OUR ASSIGNED ALT OF 12000 FT. AFTER CLR OF TFC; WE DSND BACK TO ASSIGNED ALT; AND INFORMED NORCAL APCH OF OUR DEV. MAX ALT GAINED WAS TO 12500 FT. AFTER RPTING RA TO NORCAL APCH THEY SWITCHED US OVER TO NEXT FREQ.
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.