PARIS, Feb 17 (Reuters) - Airbus is struggling

to increase output of its A350 jetliner as it faces ongoing

delays in the arrival of fuselage parts from Spirit AeroSystems ( SPR )

, industry sources said.

The delays have cast doubt on Airbus' ability to increase

production above current rates of around six jets a month for at

least the rest of this year, though it still hopes to reach its

published target of 12 a month during 2028, they added.

A spokesperson for Airbus declined comment but referred back

to comments given with its nine-month results in October, when

Airbus upheld the 2028 target but said it was "actively managing

specific supply chain challenges" that may affect 2025 output.

Spirit AeroSystems ( SPR ) declined comment.