Volcanic ash - Wikipedia. There are many instances of damage to jet aircraft as a result of an ash encounter On 24 June 1982 a British Airways Boeing 747-236B (Flight 9) flew through the ash cloud from the eruption of Mount Galunggung, Indonesia resulting in the failure of all four engin The plane descended 24,000 feet (7,300 m) in 16 minutes before the engines restarted, allowing the aircraft ...