The problem has been traced back to a Chinese supplier. The Federal Aviation Administration (FAA) is investigating an issue involving the authenticity of titanium used in Airbus and Boeing jets after a supplier discovered holes in the metal due to corrosion. This has raised suspicions that a supply chain partner may have falsified documentation, much like the AOG Technics scandal uncovered last year. As first reported by The New York Times, Airbus and Boeing partner Spirit AeroSystems has alleged that titanium used on recently-built aircraft at both planemakers may have been falsely verified, leading the FAA to launch an investigation....