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Altitude deviation at 5000 ft by the PIC of a B757 when traffic is picked up by TCASII with a descent RA, 4 NM northeast of sjc, ca.
| Attributes | |
| ACN | 559391 |
| Time | |
| Date | 200209 |
| Day | Tue |
| Place | |
| State Reference | CA |
| Altitude | msl bound lower : 4600 msl bound upper : 5000 |
| Aircraft 1 | |
| Controlling Facilities | tracon : o90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : loupe nine |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : o90.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 559391 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued advisory flight crew : took evasive action flight crew : returned to assigned altitude |
| Consequence | other |
| Miss Distance | horizontal : 4500 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance Aircraft Airspace Structure Flight Crew Human Performance |
| Primary Problem | Airspace Structure |
Narrative:
Location: sjc 047 degree radial, 4 DME. On the loupe 9 at 5000 ft, heading 120 degrees, ATC called traffic at 10 O'clock position, restr 500 ft above. At 2 mi, we got a TA, rapidly followed by an RA. We descended to 4600 ft and called departure. Our altitude was at 5000 ft with 29.91. We kept the traffic in sight during the maneuver. I estimated horizontal separation at less than 1 mi. Vertical separation less than 500 ft.
Original NASA ASRS Text
Title: ALTDEV AT 5000 FT BY THE PIC OF A B757 WHEN TFC IS PICKED UP BY TCASII WITH A DSCNT RA, 4 NM NE OF SJC, CA.
Narrative: LOCATION: SJC 047 DEG RADIAL, 4 DME. ON THE LOUPE 9 AT 5000 FT, HDG 120 DEGS, ATC CALLED TFC AT 10 O'CLOCK POS, RESTR 500 FT ABOVE. AT 2 MI, WE GOT A TA, RAPIDLY FOLLOWED BY AN RA. WE DSNDED TO 4600 FT AND CALLED DEP. OUR ALT WAS AT 5000 FT WITH 29.91. WE KEPT THE TFC IN SIGHT DURING THE MANEUVER. I ESTIMATED HORIZ SEPARATION AT LESS THAN 1 MI. VERT SEPARATION LESS THAN 500 FT.
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.