Boeing has agreed to give Spirit AeroSystems , the company that develops aircraft fuselages, a hefty financial boost. The US planemaker will provide up to $350 million in advance to support the production of products as the supplier grapples with a liquidity crisis.

Fuselage manufacturer Spirit AeroSystems (SPR) sounded the alarm last week that it might not be able to stay in business much longer. On Tuesday, it announced that former and future owner Boeing (BA) would be coming through with a $350 million bailout.

The payments are intended to help address high levels of inventory and lower operational cash flows.