An emergency can be either a Distress or an Urgency condition as defined in the “Pilot/Controller Glossary.”
A pilot who encounters a Distress condition should declare an emergency by beginning the initial communication
with the word “Mayday,” preferably repeated three times. For an Urgency condition, the word “Pan-Pan” should be
used in the same manner.
If the words “Mayday” or “Pan-Pan” are not used but you believe an emergency or an urgent situation exists, handle
it as though it were an emergency.
Because of the infinite variety of possible emergency situations, specific procedures cannot be prescribed.
However, when you believe an emergency exists or is imminent, select and pursue a course of action which appears
to be most appropriate under the circumstances and which most nearly conforms to the instructions in this manual.