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Tus ATCT controller received call from an A320 pilot at 5900 ft responding to a TCASII RA to descend. MVA was 5700 ft and the pilot descended to 5600 ft.
| Attributes | |
| ACN | 454741 |
| Time | |
| Date | 199911 |
| Day | Sat |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | intersection : wason |
| State Reference | AZ |
| Altitude | msl single value : 5900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : tus.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude descent : vacating altitude |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : supervisor controller : local |
| Qualification | controller : radar |
| Experience | controller limited radar : 10 |
| ASRS Report | 457741 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other spatial deviation |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued advisory flight crew : took evasive action |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
The airbus was 5900 ft on visual approach over mountainous terrain when it received a TA and RA to descend. The pilot advised he was descending because of TCASII RA. The controller issued the MVA of 5700 ft. The airbus stopped descent at 5600 ft when the RA ceased. There was no known or observed traffic near the area.
Original NASA ASRS Text
Title: TUS ATCT CTLR RECEIVED CALL FROM AN A320 PLT AT 5900 FT RESPONDING TO A TCASII RA TO DSND. MVA WAS 5700 FT AND THE PLT DSNDED TO 5600 FT.
Narrative: THE AIRBUS WAS 5900 FT ON VISUAL APCH OVER MOUNTAINOUS TERRAIN WHEN IT RECEIVED A TA AND RA TO DSND. THE PLT ADVISED HE WAS DSNDING BECAUSE OF TCASII RA. THE CTLR ISSUED THE MVA OF 5700 FT. THE AIRBUS STOPPED DSCNT AT 5600 FT WHEN THE RA CEASED. THERE WAS NO KNOWN OR OBSERVED TFC NEAR THE AREA.
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.