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Air carrier flight crew reported a GPWS alert after receiving a descend and maintain clearance.
| Attributes | |
| ACN | 1526049 |
| Time | |
| Date | 201803 |
| Environment | |
| Flight Conditions | IMC |
| Aircraft 1 | |
| Make Model Name | Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 180 Flight Crew Total 2855 Flight Crew Type 1013 |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
We were flying the RAZRR4 STAR into sjc. While flying the arrival ATC issued us descend to altitudes below those on the STAR. The first altitude was to 8000 ft MSL and we were instructed to resume the STAR altitudes after leveling off. We complied by selecting open descent and leveled of at 8000 ft MSL while still complying with the lateral and speed limits on the arrival. After leveling off we reset the altitude to 4000 ft MSL and went back to VNAV. The aircraft began a VNAV descent when it reached the next descent path. While in the VNAV profile ATC again directed a descend and maintain to 5100 ft MSL. Open descent was selected. While between trcot and ggugl on the arrival the radio altimeter alerted 2500 ft and began counting down. Our altitude was approximately 5400 ft MSL and speed was 240 KTS. At radio altitude of approximately 1700 ft; the GPWS commanded pull up. I selected toga deselected autopilot and pulled back on the stick to its limit as did the captain. We pitched to approximately 17 degrees nose high and climbed above 6000 ft MSL. The captain notified ATC and was informed that min vectoring altitude in our sector is 5100 ft MSL. At this point we turned toward gaary and slowly continued the descent to 5100 ft MSL. The remaining portion of the STAR was flown to a right base to runway 12R. Pattern and landing were uneventful.
Original NASA ASRS Text
Title: Air Carrier flight crew reported a GPWS alert after receiving a descend and maintain clearance.
Narrative: We were flying the RAZRR4 STAR into SJC. While flying the arrival ATC issued us descend to altitudes below those on the STAR. The first altitude was to 8000 ft MSL and we were instructed to resume the STAR altitudes after leveling off. We complied by selecting open descent and leveled of at 8000 ft MSL while still complying with the lateral and speed limits on the arrival. After leveling off we reset the Altitude to 4000 ft MSL and went back to VNAV. The aircraft began a VNAV descent when it reached the next descent path. While in the VNAV profile ATC again directed a descend and maintain to 5100 ft MSL. Open descent was selected. While between TRCOT and GGUGL on the arrival the radio altimeter alerted 2500 ft and began counting down. Our altitude was approximately 5400 ft MSL and speed was 240 KTS. At radio altitude of approximately 1700 ft; the GPWS commanded pull up. I selected TOGA deselected autopilot and pulled back on the stick to its limit as did the Captain. We pitched to approximately 17 degrees nose high and climbed above 6000 ft MSL. The Captain notified ATC and was informed that min vectoring altitude in our sector is 5100 ft MSL. At this point we turned toward GAARY and slowly continued the descent to 5100 ft MSL. The remaining portion of the STAR WAS flown to a right base to runway 12R. Pattern and landing were uneventful.
Data retrieved from NASA's ASRS site 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.