Narrative:

On arrival to victorville; joshua approach cleared us for a visual approach. We proceeded to suzzq for a left base to runway 17. We chose this runway because it had an ILS and we were able to use electronic guidance to it.since there were hills in the area we selected the terrain feature of EFIS for terrain mapping. The airport and surrounding area were clearly visible throughout the approach. The nd showed no terrain threat during the approach. The radio altimeter indicated approximately 1;500 ft clearance while on base leg. Within a couple of mile of suzzq the radio altimeter abruptly indicated clearance of 900 ft.the GPWS gave two terrain cautions and one pull-up command. We pulled up and the warning immediately ceased. We continued the approach uneventfully to a landing. We were in visual conditions during the approach good visibility at all times.we could have request vectors to final instead of accepting a visual approach. The visibility was excellent and requesting vectors didn't appear to be necessary. However; the first officer was flying and requesting vectors would have given the first officer a better view of the airport environment.

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Original NASA ASRS Text

Title: While making a night VMC approach to VCV; a widebody fight crew experienced and responded to GPWS terrain warnings.

Narrative: On arrival to Victorville; Joshua Approach cleared us for a visual approach. We proceeded to SUZZQ for a left base to Runway 17. We chose this runway because it had an ILS and we were able to use electronic guidance to it.Since there were hills in the area we selected the terrain feature of EFIS for terrain mapping. The airport and surrounding area were clearly visible throughout the approach. The ND showed no terrain threat during the approach. The radio altimeter indicated approximately 1;500 FT clearance while on base leg. Within a couple of mile of SUZZQ the radio altimeter abruptly indicated clearance of 900 FT.The GPWS gave two terrain cautions and one pull-up command. We pulled up and the warning immediately ceased. We continued the approach uneventfully to a landing. We were in visual conditions during the approach good visibility at all times.We could have request vectors to final instead of accepting a visual approach. The visibility was excellent and requesting vectors didn't appear to be necessary. However; the First Officer was flying and requesting vectors would have given the First Officer a better view of the airport environment.

Data retrieved from NASA's ASRS site as of April 2012 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.