Upon the occurrent of any of the following flight safety-related events in the course of Drone flight, the Owner or Pilot shall, within 24 hours of the occurrence or after becoming aware thereof, notify CAA by filling in the Notification Form for Flight Safety-Related Event (Attachment 15): 1. The aviation occurrence involving Drone as set out in the Transportation Occurrence Investigation Act; 2. Actual damage to or disappearance of the Drone with maximum take-off weight over 2 kg and equipped with navigation device; 3. Actual damage to or disappearance of the Drone during the course of flight activities within the area as set out in Article 99-13, Paragraphs 1~2 of the Act; 4. Actual damage to or disappearance of the Drone during the course of flight activities as set out in Article 99-14, Paragraph 1, Subparagraphs 1~8 of the Act; 5. Occurrence of incident involving proximity to or collision with other aircraft or obstacle.Attachment 15 Notification Form for Flight Safety-Related Event Involving Drone.ODT