美国联邦航空管理局和 Spirit AeroSystems 调查波音和空客喷气式飞机部件中存在的伪造钛文件，引发安全担忧。 FAA and Spirit AeroSystems investigate falsified titanium documents in Boeing and Airbus jet components, raising safety concerns.

美国联邦航空管理局和 Spirit AeroSystems 正在调查波音和空客喷气式飞机的伪造钛文件。 The FAA and Spirit AeroSystems are investigating falsified titanium documents for Boeing and Airbus jets. 起落架和叶片等部件中含有假冒钛金属，引发了安全担忧。 The counterfeit titanium, in components like landing gears and blades, has raised safety concerns. 波音公司报告了其自愿披露来自潜在造假分销商的材料的情况。 Boeing reported a voluntary disclosure about materials from a potentially falsifying distributor. 此次调查是由于航空业出现供应链问题和零部件短缺而引发的。 The investigation follows supply chain issues and component shortages in the aviation industry.