What altitude restrictions are in place for flights near volcanic ash?

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Flight Altitude Restrictions Implemented Due to Mount Ruang Eruption

Malaysia has not closed any airspace or airports following the recent eruption of Indonesia's Mount Ruang. However, flight altitudes have been restricted to 35,000 feet and below within a specific polygon area due to the volcanic ash cloud. This measure is in place to ensure safety, with a buffer zone maintained between the ash cloud's estimated height and the operational flight levels.
Volcanic Ash Cloud Extent

The ash cloud from Mount Ruang's eruption has been observed to reach altitudes between 45,000 and 63,000 feet. This significant height of the airborne ash poses a considerable risk to aviation.
Implemented Altitude Restrictions

In response to the volcanic ash, the Civil Aviation Authority of Malaysia (CAAM) has implemented restrictions on flight altitudes. Flights are now limited to a maximum of 35,000 feet within the affected polygon area.
Safety Buffer Maintained

A safety buffer of 10,000 feet is being maintained between the highest recorded ash cloud levels and the restricted flight altitudes. This buffer is a critical measure to prevent aircraft from encountering the abrasive and potentially damaging volcanic ash.
Continued Monitoring and Operations

Despite the altitude restrictions, operations into and out of Kuala Lumpur are continuing as normal. CAAM is actively monitoring the situation to ensure the ongoing safety of all flight operations in the region.

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What altitude restrictions are in place for flights near volcanic ash?

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