AirNav Indonesia ensures that flights in East Java and Bali are still operating, even though Mount Semeru erupts. AirNav also announced a “Red Alert” status and provided guidance to airlines regarding wind movements so that planes can avoid volcanic ash.
So far, the wind carrying volcanic ash is moving southwest at a speed of 50 knots at an altitude of 15 km.
Meanwhile, the pilot of the plane that passed to Denpasar, Bali admitted he did not see the volcanic ash of Mount Semeru.
“The pilot report on the Wings airplane that passed to Denpasar informs that volcanic ash cannot be seen given the conditions covered by thick clouds, as well as observations from Tower Abdul Rachman Saleh,” said AirNav Indonesia Corporate Secretary Rosedi.
According to Rosedi, the eruption of Mount Semeru did not have much impact on flight activities in the 5 surrounding branches.
“As of 17.30, there is no significant impact from the eruption of Mount Semeru on the operation of flight navigation services by AirNav Indonesia, both at the Surabaya Branch, Denpasar Branch, Semarang Branch, Yogyakarta Branch, and Solo Branch,” said Rosedi.
Meanwhile AirNav Indonesia continues to take anticipatory steps. One of them is coordinating with Abdul Rachman Saleh Airport in Malang and Juanda Airport in Surabaya to conduct a Paper Test for checking the ash presence in the air.
Mount Semeru experienced 54 eruptions or eruptions over the last 24 hours, with a duration of 85-130 seconds.
The increase in activity peaked at 15.00. Hot clouds fall in Supiturang Village, Pronojiwo, Lumajang. Satellite monitoring at 17.00, Mount Semeru again experienced an increase in the release of SO2 sulfur gas.
“It is estimated that in the next 6 hours, the movement of volcanic ash tends to go west to southwest,” said a written statement from BMKG Juanda on Saturday (4/12).
This is because the wind moves westward at a higher speed, ie 20-30 km/hour and to the southwest at 40-50 km/hour.
The Regional Disaster Management Agency (BPBD) of East Java Province has sent a team to assist in evacuating residents affected by the eruption of Mount Semeru.