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MD80S aircraft on MVA received GPWS. Captain reporter executed evasive maneuver and in discussion with tower later, was told there is a peak in the vicinity of the warning that occasionally causes GPWS alerts.
| Attributes | |
| ACN | 398176 |
| Time | |
| Date | 199803 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : psp |
| State Reference | CA |
| Altitude | msl bound lower : 7000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : psp |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 398176 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 398261 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
En route from twenty-nine palms to psp via vector from psp approach control, approximately 230 degree heading, at an assigned altitude of 7000 ft and at approximately 16 DME from psp VOR, a single 'terrain, terrain' voice. Immediately advanced power and aircraft established in about a 10 degree climb angle. Aircraft was leveled at 8000 ft. Approach control was advised immediately upon initiation of climb, whereupon they advised MVA for that sector was 7000 ft -- our assigned altitude. Once over ridge line, we were cleared to 4000 ft, saw the airport, was cleared for visual, and landed without further event. At time of 'terrain' alert, we were IMC and in light to moderate chop. Next day, in conversation with psp tower, they commented that there is a 'peak' out there somewhere that causes occasional GPWS alerts -- but only for our aircraft.
Original NASA ASRS Text
Title: MD80S ACFT ON MVA RECEIVED GPWS. CAPT RPTR EXECUTED EVASIVE MANEUVER AND IN DISCUSSION WITH TWR LATER, WAS TOLD THERE IS A PEAK IN THE VICINITY OF THE WARNING THAT OCCASIONALLY CAUSES GPWS ALERTS.
Narrative: ENRTE FROM TWENTY-NINE PALMS TO PSP VIA VECTOR FROM PSP APCH CTL, APPROX 230 DEG HDG, AT AN ASSIGNED ALT OF 7000 FT AND AT APPROX 16 DME FROM PSP VOR, A SINGLE 'TERRAIN, TERRAIN' VOICE. IMMEDIATELY ADVANCED PWR AND ACFT ESTABLISHED IN ABOUT A 10 DEG CLB ANGLE. ACFT WAS LEVELED AT 8000 FT. APCH CTL WAS ADVISED IMMEDIATELY UPON INITIATION OF CLB, WHEREUPON THEY ADVISED MVA FOR THAT SECTOR WAS 7000 FT -- OUR ASSIGNED ALT. ONCE OVER RIDGE LINE, WE WERE CLRED TO 4000 FT, SAW THE ARPT, WAS CLRED FOR VISUAL, AND LANDED WITHOUT FURTHER EVENT. AT TIME OF 'TERRAIN' ALERT, WE WERE IMC AND IN LIGHT TO MODERATE CHOP. NEXT DAY, IN CONVERSATION WITH PSP TWR, THEY COMMENTED THAT THERE IS A 'PEAK' OUT THERE SOMEWHERE THAT CAUSES OCCASIONAL GPWS ALERTS -- BUT ONLY FOR OUR ACFT.
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.