Hydatid cyst disease of lungs may not be symptomatic.It may present as spontaneous rupture in pleura or a bronchus.During spontaneous breathing, cyst Apparel content of endobronchially ruptured pulmonary hydatid cyst is mostly evacuated by coughing.However, during positive pressure ventilation such Wood Bowl extruded fragments may lodge into smaller airway leading to an airway catastrophe.We present such accidental endobronchial rupture of pulmonary hydatid cyst during surgery, its prompt detection, and management by rigid bronchoscopy.