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Non detection of aircraft by TRACON radar. TCASII RA saves the day -- again. Small aircraft in proximity of departure route.
| Attributes | |
| ACN | 276409 |
| Time | |
| Date | 199407 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : smf |
| State Reference | CA |
| Altitude | msl bound lower : 3500 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : smf |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 450 |
| ASRS Report | 276409 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : far non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 400 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On climb out from smf climbing through 3000 ft MSL, noticed TCASII traffic on converging course 1000 ft above us. Got a TA followed by an RA and visual sighting. Complied with RA and took evasive action consisting of 30 degree left turn and a descent. After our evasive action, light aircraft passed by our right side 400 ft vertically and 1/4 NM horizontally. At no time prior to the RA did departure issue a TA. Our first indication of a problem was the TCASII advisory. TCASII may very well have saved a 727 and 150 plus people!
Original NASA ASRS Text
Title: NON DETECTION OF ACFT BY TRACON RADAR. TCASII RA SAVES THE DAY -- AGAIN. SMA IN PROX OF DEP RTE.
Narrative: ON CLBOUT FROM SMF CLBING THROUGH 3000 FT MSL, NOTICED TCASII TFC ON CONVERGING COURSE 1000 FT ABOVE US. GOT A TA FOLLOWED BY AN RA AND VISUAL SIGHTING. COMPLIED WITH RA AND TOOK EVASIVE ACTION CONSISTING OF 30 DEG L TURN AND A DSCNT. AFTER OUR EVASIVE ACTION, LIGHT ACFT PASSED BY OUR R SIDE 400 FT VERTLY AND 1/4 NM HORIZLY. AT NO TIME PRIOR TO THE RA DID DEP ISSUE A TA. OUR FIRST INDICATION OF A PROB WAS THE TCASII ADVISORY. TCASII MAY VERY WELL HAVE SAVED A 727 AND 150 PLUS PEOPLE!
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.