Operations
Volcanic Ash Avoidance
Definition
Mandatory procedures to avoid volcanic ash clouds that can cause total engine failure in jet aircraft. VAA centers issue advisories. Aircraft must not fly through known or forecast volcanic ash areas.
Related Terms
Volcanic Ash
Fine particles of pulverized rock from volcanic eruptions that are extremely haz...
SIGMET(SIGMET)
Significant Meteorological Information advisory issued for hazardous weather phe...
Notice to Air Missions(NOTAM)
A notice containing information essential to flight safety not sufficiently know...
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