Boeing is considering a Block 2 upgrade to the US Army’s CH-47 Chinook, while Honeywell tries to improve the power efficiency of the T55 turboshaft engine by 25% and reduce the fuel consumption by 8%.

Honeywell aims to perform a rig test in November this year, reports Flight Global, giving them more information to design the next development phase and kit upgrades. This next phase is hoped to be available by 2020.