Japan Aerospace Exploration Agency (JAXA) and Ministry for Research and Technology of Indonesia (RISTEK) have jointly conducted the L-band airborne SAR flight campaign in Indonesia between Aug. 4 and Aug. 8 of 2012. The SAR involved in this campaign is the JAXA's Polarimetric Interferometric Airborne Synthetic Aperture Radar of L-band version 2, shortly Pi-SAR-L2, which was developed to replace and improve the previous Pi-SAR-L for calibration and validation of the ALOS-2/PALSAR-2 and the future SAR investigations at the end of March 2012. Application of the Pi-SAR-L2 in Indonesia focused on the specific mission objectives important to both countries, i.e., forest observation, disaster observation, marine applications (ship detection), geometric evaluation, and the crop monitoring.