What is the width of the search area for an ALNOT?

The correct answer indicates that the width of the search area for an ALNOT is defined as 50 miles each side of the route. This measurement is crucial in search and rescue operations where an aircraft is reported missing. The ALNOT, or Alert Notification, is issued to alert search and rescue teams to begin the search in a specified area based on the last known position of the aircraft.

The rationale behind selecting a width of 50 miles each side is derived from practical considerations in aviation safety and search patterns. This range allows for a comprehensive search operation that accounts for potential deviations in flight path due to various factors such as weather conditions, pilot actions, or mechanical issues. Having a wider search area increases the likelihood of locating the aircraft or any debris in a reasonable timeframe.

The other options exceed this standard search area width and might lead to unnecessarily expansive search operations, which could dilute resources and complicate search efforts. Thus, the 50-mile range strikes a balance between thoroughness and efficiency in search and rescue missions.