Canada has agreed to a new $313 million contract amendment with Boeing [BA] to continue providing full systems logistics and engineering support for its Air Force’s fleet of CH-147F Chinook helicopters.

The fixed-price amendment, announced April 2, has been added to an existing 20-year performance-based logistics (PBL) contract between the Royal Canadian Air Force (RCAF) and Boeing originally signed in 2013.

Under the deal, the RCAF reviews its requirements for its 15 CH-147F Chinooks every five years. 

“We look forward to continuing our support of the Royal Canadian Air Force and its effort to reduce maintenance costs through this long-term agreement. PBLs have a proven track record of increasing system availability, decreasing maintenance cycles through the use of predictive maintenance tools, and reducing overall ownership costs,” Turbo Sjogren, a Boeing Global Services vice president, said in a statement.

Boeing will also continue providing supply chain support and data analytics for the Chinooks.