 The sewerage treatment system integrated into the construction of the building converts the liquid waste into fertiliser after separating it from the solid waste.In 2018, the airport was closed for two days due to security issues arising after a dispute between guards and a local landowning group.In 2019/2020, the Mount Hagen Airport was used to re-route the flights of Air Niugini from Wapenamanda due to maintenance works at the runways performed by the National Airports Corporation.