Aviation Safety Reporting System

The Aviation Safety Reporting System, or ASRS, is the US Federal Aviation Administration's (FAA) voluntary confidential reporting system that allows pilots and other aviation professionals to confidentially report near misses or close call events in the interest of improving aviation safety. The ASRS collects, analyzes, and responds to voluntarily submitted aviation safety incident reports in order to reduce the likelihood of aviation accidents.[1] The ASRS was designed, and is operated by NASA by NASA, which is considered by the aviation industry to be a neutral third-party since it has no authority to enforce potential violations. The confidential and independent nature of the ASRS is key to its long-term success in identifying numerous latent system hazards in the National Airspace System (NAS). Under the FAA's authority, NASA extends limited immunity to individual aviation workers for reporting safety events which do not result in an accident, as defined by the FAA. This has the effect of encouraging these potential reporters to come forward with systemic safety issues without fear of reprisal. The success of the system stands as a positive example used as a model by other industries seeking to make improvements in safety. Other industries who have modeled similar systems on the ASRS include the rail, medical, firefighters, and off-shore petroleum production.

Reporting process

A notable feature of the ASRS is its confidentiality and immunity policy. Reporters may, but are not required to, submit their name and contact information. If the ASRS staff has questions regarding a report, it can perform a callback and request further information or clarification from the reporter. Once the staff is satisfied with the information received, the report is stripped of identifying information and assigned a report number. The part of the reporting form with contact information is detached and returned to the reporter. ASRS will issue alerts to relevant parties, such as airlines, air traffic controllers, manufacturers, and airport authorities if NASA considers the issue to be significant to improved aviation safety. The ASRS also publishes a monthly newsletter highlighting safety issues, and now has an online database of reports that is accessible by the public. This database makes a large body of de-identified reports available to safety researchers world-wide. In addition, the ASRS occasionally conducts special studies on topics of interest to researchers and regulators. These special studies are also made available on the ASRS website.

Immunity policy

Often, reports are submitted because a rule was accidentally broken. The FAA's immunity policy encourages submission of all safety incidents and observations, especially information that could prevent a major accident, even if a violation occurs. If enforcement action is taken by the FAA against an accidental rule violation that did not result in an accident, a reporter can present their ASRS form as proof that the incident was reported to NASA in the interest of aviation safety. The FAA views the report as evidence of a "constructive safety attitude" and will not impose a penalty.[2] However, this immunity can only be exercised once every five years, though an unlimited number of reports can be filed.

Statistical validity

Due to the self-selected, or voluntary nature of the reports to the ASRS, NASA cautions against statistical use of the data they contain. On the other hand, they do express considerable confidence in the reliability of the reports submitted:

"However, the ASRS can say with certainty that its database provides definitive lower-bound estimates of the frequencies at which various types of aviation safety events actually occur. For example, 34,404 altitude overshoots were reported to the ASRS from January 1988 through December 1994. It can be confidently concluded that at least this number of overshoots occurred during the 1988-94 period--and probably many more. Often, such lower-bound estimates are all that decision makers need to determine that a problem exists and requires attention."[3]


Speaking before a Flight Safety Foundation International Air Safety Seminar in Madrid in November 1966, Bobbie R. Allen, the Director of the Bureau of Safety of the U.S. Civil Aeronautics Board, referred to the vast body of accumulated aviation safety incident information as a "sleeping giant." Noting that fear of legal liability and of regulatory or disciplinary action had prevented the dissemination of this information, rendering it valueless to those who might use it to combat hazards in the aviation system, Mr. Allen commented:

β€œIn the event that the fear of exposure cannot be overcome by other means, it might be profitable if we explored a system of incident reporting which would assure a substantial flow of vital information to the computer for processing, and at the same time, would provide some method designed to effectively eliminate the personal aspect of the individual occurrences so that the information derived would be helpful to all and harmful to none.”[4]

Several years earlier, in testimony before the U.S. Senate on the legislation proposing the Federal Aviation Act of 1958, the late William A. Patterson, then President of United Airlines, touched on the need to develop accurate safety trend information. "On the positive side," said Mr. Patterson, "you take your statistics - and your records - and your exposures - and you act before the happening!β€œ

These distinguished aviation figures were articulating an objective long-recognized, but which had frustrated all efforts at accomplishment. In the years to come, frequent references to the need for information collection and dissemination would recur.


  1. "ASRS - Aviation Safety Reporting System - Program Briefing". asrs.arc.nasa.gov. Retrieved 2015-10-14.
  2. FAA policy on immunity for ASRS reports Archived September 28, 2006, at the Wayback Machine
  3. ASRS Database statistics: Relationship of ASRS Data to All Aviation Incidents
  4. Hardy, Rex (1990). Callback: NASA's Aviation Safety Reporting System. The Smithsonian Institution. p. 2. ISBN 0-87474-463-6.
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