French President Jacques Chirac and German Chancellor Angela Merkel are expected to discuss EADS funding when they meet on Tuesday.
The Franco-German company says the A350 program also depends on the achievement of cost-cutting targets announced in the wake of a second setback to production of the 555-seater A380, revealed earlier this year.
The superjumbo's overall two-year delay wiped 4.8 billion euros ($6.4 billion) off profit forecasts over four years and has forced Airbus to consider basing assembly work on new models at a single site, rather than splitting it among several countries.
Gallois, who has warned workers to expect job cuts, said a decision on the A350 final assembly would be announced early in 2007 along with other restructuring measures.
Also on Monday, Rolls-Royce PLC, the world's second-largest aircraft engine maker, said it has finalized an order with Airbus to supply its Trent engine for the A350 XWB. Financial details were not disclosed. The contract follows a preliminary agreement announced the Farnborough air show in July.
Shares of European Aeronautic Defence & Space Co. rose 1.2 percent to close at 23.15 euros ($30.89) in Paris.
Louis Gallois tried hard to please everybody Tuesday on his first day on the job as the latest executive to head the European aircraft maker Airbus.
CEO Louis Gallois told a news conference that the A350 will be funded through the savings generated by a painful cost-cutting plan, from cash flow and from Airbus' partners.
But he and EADS said the problems at Airbus would continue to be felt through 2007, warning that it would post another substantial loss in 2007.