Hawaii Volcanoes National Park announces the upcoming flight plans for the remainder of April:
• 8 a.m.-noon Thursday, April 18: For invasive Guinea grass surveys and control along Keauhou Trail, from the coast to 2,700-foot elevation.
• 8 a.m.-noon Thursday, April 18, and April 24: To transport fence material, field equipment and supplies to the Ka‘u desert boundary between sea level and 3,000-foot elevation.
• 10 a.m.-noon Monday, April 22: For invasive faya tree surveys on Mauna Loa between the powerline road and Kipukapuaulu.
• 8 a.m. April 24 and 11 a.m. April 26: Fly supplies and crews for petrel monitoring from the Kilauea helipad at 4,000-foot elevation to Mauna Loa at 9,000 feet and back.
USGS Hawaiian Volcano Observatory might conduct flight operations over Kilauea and Mauna Loa to assess volcanic activity and maintain instrumentation.
The park regrets any noise impact to residents and park visitors. Dates and times are subject to change based on aircraft availability and weather.
Management of the park requires the use of aircraft to monitor and research volcanic activity, conduct search-and-rescue missions and law enforcement operations, support management of natural and cultural resources and maintain backcountry facilities.