Every pilot's nightmare , When an emergency escalates

Did you know a triple pan call PAN- PAN- PAN

Did you know a mayday call MAY DAY - MAY DAY

These are calls made by the crew during emergency situation, a triple pan call is a first degree emergency call, eg,a single engine flameout in a dual engine aircraft, the controller gives priority to that a/c in order to ground that safely as soon as possible.

On the other hand, a may day call is a real threat for all, eg, all engine flameout or an aircraft is losing hydraulics which makes it uncrollable , burbling or stall situations, etc.,