Narrative:

We were cleared for an ILS 26L approach and advised an air carrier aircraft was six miles ahead of us. ATC asked if we could slow down further or if we would like a vector for spacing. We chose a vector. ATC gave us left turn to 180 degrees; maintain 4200. We then were vectored heading [090]. Next we were given left to 360. Upon reaching heading 360; we got a GPWS alert to 'climb; terrain'. We responded to the alert and climbed to 4800. The captain immediately informed ATC. ATC responded: 'your radio is unreadable'. The captain repeated the transmission and ATC instructed us to turn left and cleared us for the approach again. Landing was uneventful.

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Original NASA ASRS Text

Title: Too close in trail on approach to ONT; an A319 was vectored for another approach and; while so doing; received and complied with an EGPWS Terrain Warning. The subsequent approach and landing were uneventful.

Narrative: We were cleared for an ILS 26L approach and advised an air carrier aircraft was six miles ahead of us. ATC asked if we could slow down further or if we would like a vector for spacing. We chose a vector. ATC gave us left turn to 180 degrees; maintain 4200. We then were vectored heading [090]. Next we were given left to 360. Upon reaching heading 360; we got a GPWS alert to 'Climb; Terrain'. We responded to the alert and climbed to 4800. The Captain immediately informed ATC. ATC responded: 'your radio is unreadable'. The Captain repeated the transmission and ATC instructed us to turn left and cleared us for the approach again. Landing was uneventful.

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.