Lockheed Martin will deliver 22 initial production lot V conventional take-off and landing F-35 joint strike fighter (JSF) aircraft to US Air Force under US Department of Defence contract.

The $193m contract is part of a larger $522m contract by the DoD for production and delivery of 42 F35s for the air force, navy and army.

Lockheed will complete the work in May 2011.

The Naval Air Systems Command is responsible for the contracting activity.