<ul data-eligibleForWebStory="false">The Aircraft Accident Investigation Bureau will release a preliminary report on Ahmedabad plane crash.The investigation is ongoing with assistance from foreign players, such as Boeing.AAIB can submit a preliminary report within 30 days of the accident as per ICAO norms.Officials from various agencies discussed safety standards in a Parliamentary Standing Committee meeting.Concerns were raised about air traffic control, urbanization around airports, and DGCA vacancies.