Overview
- ISRO completed a ground static test of the redesigned PSLV third stage at Sriharikota on November 12, 2026, and reported the firing achieved its test objectives.
- Engineers changed the PS3 solid motor’s hardware by altering the nozzle configuration, strengthening mechanical interfaces, and adding redundant sealing to address failure points.
- The agency tightened manufacturing and verification rules by raising raw-material acceptance standards, revising assembly procedures, and expanding non-destructive testing during integration and transport.
- ISRO will now perform detailed analysis of the static-test data and carry out further tests as required before declaring the PSLV ready to resume operational flights.
- Restoring the PSLV matters to ISRO’s science and operational schedules and to commercial customers because the stage anomalies in 2025–26 interrupted launches of Earth-observation and other satellites.