April 10 (Reuters) - Airbus expressed confidence in its aircraft production forecasts on Wednesday despite persistent supply problems, at a meeting with its shareholders in Amsterdam.

The manufacturer's shares have jumped 16% since the start of the year, while the shares of rival Boeing, which is struggling with the consequences of numerous technical problems, have lost 29%.

Shareholders approved a partial renewal of the Board of Directors and a special dividend of one euro per share, representing almost 800 million euros, in addition to an unchanged regular payout.

Thanks to orders from airlines recovering from the pandemic, the world's largest aircraft manufacturer has managed to build up cash reserves, while Boeing is beset by management upheavals and debt problems.

Analysts believe the French aircraft manufacturer is on track to meet its annual target of 800 aircraft deliveries, after confirming 142 first-quarter deliveries this week.

However, single-aisle production is below internal planning levels at around 50 per month, meaning it needs to accelerate to reach the target of 75 per month by 2026, industry sources said.

CEO Guillaume Faury said the group continued to face geopolitical uncertainty and supply chain challenges.

The company is facing increasing cost pressures after investing in additional resources to ensure production ramp-up, exceeding internal projections at the start of the year, the sources said. (Tim Hepher reports; Federica Mileo edits by Kate Entringer)