Terex South Dakota (Terex) is recalling certain model year 2015-2016 C5000, C6000, General 80, RMX, TM100, and TM125 aerial devices, and digger derrick lifts installed on trucks manufactured August 4, 2015, to February 16, 2016. The suspension circuit can inflate the suspension air bags on the affected vehicles if the Master/PTO switch or ignition is turned off in the cab while the boom is in the raised position. This can cause the frame to rise, lifting the outriggers from the ground.