Abnormal and  Emergency Procedures Chapter 13 Introduction This chapter contains information on dealing with abnormal  and emergency situations that may occur in flight.   Aeronautical decision-making (ADM), a systematic approach  to determine the best course of action in response to a  given set of circumstances, should always be used rather  than making a quick decision without determining the best  outcome. Most emergencies can be prevented by making the  proper decisions. This may be the first go/no-go decision of  whether to fl y, when to fl y, or where to fl y. All safe fl ights  start with proper prefl ight planning. 