Cobham Life Support, Davenport, has been awarded a U.S. Defense Logistics Agency contract worth up to $7.1 million to overhaul and upgrade Nitrogen Inerting Units for the AH-64 Apache helicopter.

The work will be performed in Davenport beginning later this year.

In September 2012, Cobham received a five-year indefinite delivery, indefinite quantity contract valued at $15 million to manufacture OBIGGS, or On Board Inert Gas Generation System, NIUs for U.S. Army AH-64 Apache helicopters.

The system displaces fuel tank vapors with inert nitrogen gas, reducing the risk of explosion. More than 1,500 Apache helicopters with Cobham NIUs have been delivered worldwide.

“This award reflects Cobham's unrivaled decades of experience in the design, development, delivery and support of fuel tank inerting systems, ranging from depot repair to equipping and training customers to fully maintaining products at their own facilities," Cobham Life Support president Kelly Coffield said in a news release.

Cobham Life Support specializes in life support and personal survival equipment systems, including oxygen systems for aviators and astronauts, crew restraints, flotation gear and crew and cargo release mechanisms.

 Cobham provides military helicopter pilots and U.S. armored vehicle crews with liquid-cooled vests to increase endurance in the heat of battle, protects aircraft fuel tanks against fire on military and commercial aircraft and generates on-board oxygen on more than 2,500 military aircraft to reduce aircraft reliance on bottled systems.

The Cobham Life Support cryogenic cooling range enables infrared electro-optical equipment in missile seekers, targeting systems, aircraft defensive countermeasure systems and night vision equipment.