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An MD80 on radar vectors by geg TRACON was given a descent clearance and received a GPWS warning 'terrain' which required an evasive maneuver.
| Attributes | |
| ACN | 424892 |
| Time | |
| Date | 199901 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : geg |
| State Reference | WA |
| Altitude | msl bound lower : 4100 msl bound upper : 4500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : commercial pilot : cfi pilot : instrument |
| Experience | flight time last 90 days : 100 flight time total : 14000 flight time type : 7000 |
| ASRS Report | 424892 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer instruction : trainee |
| Qualification | pilot : commercial |
| Events | |
| Anomaly | other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course other |
| Consequence | faa : reviewed incident with flight crew Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
While being vectored to geg airport at 4200 ft MSL on downwind to runway 21, we were given a turn to a heading of 070 degrees and issued a descent to 4000 ft MSL. At 4100 ft I received a GPWS warning of 'terrain, terrain.' I executed an escape maneuver at 4500 ft MSL, the warning ceased. I had to take the aircraft away from the first officer due to inaction, (he was on his second oe-training flight with us). We debriefed, but only after a discussion with the tower to see if they would pass on our information to approach. The new first officer said he learned something, that is that GPWS warnings don't allow problem solving by guessing what is wrong, but to react then figure out what went on after the danger is over.
Original NASA ASRS Text
Title: AN MD80 ON RADAR VECTORS BY GEG TRACON WAS GIVEN A DSCNT CLRNC AND RECEIVED A GPWS WARNING 'TERRAIN' WHICH REQUIRED AN EVASIVE MANEUVER.
Narrative: WHILE BEING VECTORED TO GEG ARPT AT 4200 FT MSL ON DOWNWIND TO RWY 21, WE WERE GIVEN A TURN TO A HDG OF 070 DEGS AND ISSUED A DSCNT TO 4000 FT MSL. AT 4100 FT I RECEIVED A GPWS WARNING OF 'TERRAIN, TERRAIN.' I EXECUTED AN ESCAPE MANEUVER AT 4500 FT MSL, THE WARNING CEASED. I HAD TO TAKE THE ACFT AWAY FROM THE FO DUE TO INACTION, (HE WAS ON HIS SECOND OE-TRAINING FLT WITH US). WE DEBRIEFED, BUT ONLY AFTER A DISCUSSION WITH THE TWR TO SEE IF THEY WOULD PASS ON OUR INFO TO APCH. THE NEW FO SAID HE LEARNED SOMETHING, THAT IS THAT GPWS WARNINGS DON'T ALLOW PROB SOLVING BY GUESSING WHAT IS WRONG, BUT TO REACT THEN FIGURE OUT WHAT WENT ON AFTER THE DANGER IS OVER.
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.