Lockheed Martin has secured a US Army sustainment contract for the AH-64 Apache helicopter modernised target acquisition designation sight / pilot night vision sensor (M-TADS/PNVS) system.

The $31.8m performance-based logistics (PBL) contract supports the initial $111m PBL order, secured by the company in 2012. The five-year contract will have a maximum potential value of $424m.

Under the contract, the company will continue to provide a comprehensive sustainment solution that enables M-TADS/PNVS mission readiness, reduces operation and support costs, and drives reliability and maintenance improvements.

"We work hard to ensure that our PBL customers have the highest availability rates possible."

Lockheed Martin Missiles and Fire Control M-TADS/PNVS international and sustainment programmes director Mike Taylor said: "We work hard to ensure that our PBL customers have the highest availability rates possible, and we back that up with a team of field representatives who stay ready around the clock, around the world.

Also known as Arrowhead, the M-TADS/PNVS is an advanced electro-optical fire control system. It is designed to provide Apache attack helicopter pilots with long-range, electro-optical precision engagement and flying targeting capabilities for day, night and adverse-weather missions.

The system replaces the legacy TADS/PNVS direct-view optics with a new TADS electronic display and control unit, which enables image fusion, and also augments the pilot’s target resolution and situational awareness on the battlefield.

Used by the US Army since 2005, the system has already proven its capabilities during operations in Afghanistan and Iraq.

Lockheed has supplied more than 1,300 M-TADS/PNVS systems and spares to the US Army, and 13 international customers worldwide.