PSLV-XL is the high-capacity Polar Satellite Launch Vehicle configuration with six extended PSOM-XL solid strap-on motors. It flew 27 times from PSLV-C11 in October 2008 through PSLV-C61 in May 2025, including Chandrayaan-1, the Mars Orbiter Mission, AstroSat, and Aditya-L1; C39 and C61 were unsuccessful.