When a Dropsonde is released through the bay in the fuselage of the aircraft, it begins to drop from 42,000 feet (about 14 kilometers) at a rate of ten meters per second. Every half second it sends out data to the researchers in the aircraft right up until it finally crashes into the sea. The team then encodes the data and transmits it to the CWB and early warning agencies in various countries.
當投落送從機腹的拋投孔拋出，會以每秒 10 公尺的速度從 4 萬 2,000 英呎（約 14 公里）高空緩緩下降，每隔 0.5 秒即會傳送一次沿途經過的颱風大氣風場等紀錄給機上人員，直至最後墜海；研究人員會再進行校驗和編碼工作，並傳送給氣象局與各國預報單位。