Airbus (OTCPK:EADSY) is nearing an agreement to provide funding and revised payment terms to Spirit AeroSystems (NYSE:SPR) as the aircraft parts maker struggles with its finances. Spirit shares fell 1.

The airframe manufacturer will get a new cash infusion from its major customer to ensure it can remain financially stable and maintain inventory, reduce operating expenses,

Boeing has agreed to pay Spirit AeroSystems up to $350 million in advance to keep producing products for it as the fuselage supplier works through a liquidity crunch. The jet maker said Tuesday that the advance payments are intended to help Spirit address high levels of inventory and lower operational cash flows.