Skip to page content

USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Site Notification

Site Notification

United States Department of TransportationUnited States Department of Transportation

AC 91-79B - Aircraft Landing Performance and Runway Excursion Mitigation

Document Information

Aircraft Landing Performance and Runway Excursion Mitigation
Date issued
Office of Primary Responsibility
AFS-200,800, Air Transportation/GA and Commercial

This AC provides ways to identify, understand, and manage the risks associated with the landing phase of flight. It describes braking action reports and the Runway Condition Assessment Matrix (RCAM), discusses the hazards associated with runway overruns and excursions, reviews the requirements for predeparture flight planning, and provides procedures for completing a time of arrival (TOA) landing distance assessment. It also provides operators with information they may use to develop standard operating procedures (SOP), training programs, policies, and briefing guides in order to mitigate landing risks. The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Number Title Date
91-79A Mitigating the Risks of a Runway Overrun Upon Landing (Include Chg 1)

This advisory circular (AC) provides ways for pilots and airplane operators to identify, understand, and mitigate risks associated with runway overruns during the landing phase of flight. It also provides operators with detailed information that operators may use to develop company standard operating procedures (SOP) to mitigate those risks.