备降 Traditional form: 備降 Pinyin (reading): bèijiàng Definitions: (aviation) to land at an alternate airport Characters: 备 - to prepare; to get ready, to equip; ready; perfect 降 - to descend, to fall; to drop, to lower Traditional characters: 備 - to prepare; to get ready, to equip; ready; perfect 降 - to descend, to fall; to drop, to lower