Over time, the 12-V power wire for the boom stow sensor on certain aerial devices could be damaged by contact with a sharp edge. If this happens, the wire could short circuit and blow the fuse for the ignition circuit. This can cause the engine to shut off suddenly while driving.
A sudden loss of engine power could increase the risk of a crash.
Altec Industries will notify owners by mail and instruct you to contact Altec Service to add a relay that is fused separately from the ignition circuit.