 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
WX factors. Evasive action go around. Air carrier hits windshear on approach and during the go around has to turn off from the published procedure to avoid severe WX.
| Attributes | |
| ACN | 311521 |
| Time | |
| Date | 199507 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sdq |
| State Reference | FO |
| Altitude | agl bound lower : 1400 agl bound upper : 1400 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sdq |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach landing : go around |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 311521 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 311522 |
| Events | |
| Anomaly | inflight encounter : weather non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
During ILS runway 17 approach to sdq, heavy radar returns were observed on the perimeter of the runway from the northeast to the west. We also observed the south end of the runway engulfed in precipitation. Lightning and virga were also observed. The surface wind was reported at 180 degrees, 20 KTS. The IRS wind was 020 degrees, 30 KTS. At 1400 ft QFE, a violent shift in wind direction and speed was encountered. The go around escape maneuver was initiated to the northwest. The published missed approach course was unsafe to fly. Aircraft was operated in VMC conditions during missed approach. The tower was informed of our missed approach to the northwest. I informed the tower I was exercising captain's emergency authority/authorized to deviate from missed approach procedure. This was necessary to avoid severe WX.
Original NASA ASRS Text
Title: WX FACTORS. EVASIVE ACTION GAR. ACR HITS WINDSHEAR ON APCH AND DURING THE GAR HAS TO TURN OFF FROM THE PUBLISHED PROC TO AVOID SEVERE WX.
Narrative: DURING ILS RWY 17 APCH TO SDQ, HVY RADAR RETURNS WERE OBSERVED ON THE PERIMETER OF THE RWY FROM THE NE TO THE W. WE ALSO OBSERVED THE S END OF THE RWY ENGULFED IN PRECIP. LIGHTNING AND VIRGA WERE ALSO OBSERVED. THE SURFACE WIND WAS RPTED AT 180 DEGS, 20 KTS. THE IRS WIND WAS 020 DEGS, 30 KTS. AT 1400 FT QFE, A VIOLENT SHIFT IN WIND DIRECTION AND SPD WAS ENCOUNTERED. THE GAR ESCAPE MANEUVER WAS INITIATED TO THE NW. THE PUBLISHED MISSED APCH COURSE WAS UNSAFE TO FLY. ACFT WAS OPERATED IN VMC CONDITIONS DURING MISSED APCH. THE TWR WAS INFORMED OF OUR MISSED APCH TO THE NW. I INFORMED THE TWR I WAS EXERCISING CAPT'S EMER AUTH TO DEVIATE FROM MISSED APCH PROC. THIS WAS NECESSARY TO AVOID SEVERE WX.
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.