Wichita ? Hawker Beechcraft is furloughing employees because of a shortage of materials on two composite jets.

The Wichita-based company says it will furlough employees who work on final assembly of Premier 1A and Hawker 4000 business jets inside Plant IV.

Spokeswoman Nicole Alexander says the furloughs will be held on a rolling basis over the next 30 to 60 days, and last between 30 and 45 days.

The Wichita Eagle reports employees working on the planes in Plant 3 are already on furlough because of the material shortages.

She says the composite materials are in short supply because of increases in production of commercial and military programs.