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Falcon 900 crew responds to TCAS RA caused by VFR traffic 500 feet below that was previously reported by the controller.
| Attributes | |
| ACN | 733990 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : smo.vor |
| State Reference | CA |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sct.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 900 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude ground : maintenance |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sct.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Route In Use | enroute other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 4000 flight time type : 750 |
| ASRS Report | 733990 |
| Person 2 | |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Miss Distance | vertical : 1500 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
We were cleared by ATC to climb and maintain 7000 ft while heading to intercept V165 before valey intersection. VFR traffic which previously reported having us in sight came to a minimum separation of 500 ft. The TCAS climb RA led us to a vertical speed of 1000 FPM. The escape maneuver exceeded by 1000 ft the ATC assigned altitude. I believe cause was controller error or too many aircraft on frequency. I had reported the TA 2 times to controller with no response when I got the RA and evaded per procedure. I reported the RA three times before controller acknowledged. I don't believe there was much danger of actual collision as the other aircraft was VFR in cruise below at 6500 ft and we were awaiting next step-climb.
Original NASA ASRS Text
Title: FALCON 900 CREW RESPONDS TO TCAS RA CAUSED BY VFR TRAFFIC 500 FEET BELOW THAT WAS PREVIOUSLY REPORTED BY THE CONTROLLER.
Narrative: WE WERE CLRED BY ATC TO CLB AND MAINTAIN 7000 FT WHILE HEADING TO INTERCEPT V165 BEFORE VALEY INTXN. VFR TFC WHICH PREVIOUSLY RPTED HAVING US IN SIGHT CAME TO A MINIMUM SEPARATION OF 500 FT. THE TCAS CLB RA LED US TO A VERT SPD OF 1000 FPM. THE ESCAPE MANEUVER EXCEEDED BY 1000 FT THE ATC ASSIGNED ALT. I BELIEVE CAUSE WAS CTLR ERROR OR TOO MANY ACFT ON FREQ. I HAD RPTED THE TA 2 TIMES TO CTLR WITH NO RESPONSE WHEN I GOT THE RA AND EVADED PER PROCEDURE. I REPORTED THE RA THREE TIMES BEFORE CTLR ACKNOWLEDGED. I DON'T BELIEVE THERE WAS MUCH DANGER OF ACTUAL COLLISION AS THE OTHER ACFT WAS VFR IN CRUISE BELOW AT 6500 FT AND WE WERE AWAITING NEXT STEP-CLB.
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.