United Airlines becomes third major carrier to disclose it's been affected by suspicious engine parts

• Airlines have been on the lookout for potentially dodgy spare parts.
• The supplier has been under investigation by regulators who say it used false documentation.
• United, Southwest, and Virgin Australia have all identified suspect parts, per Bloomberg.

United Airlines has joined the ranks of air carriers affected by inauthentic engine parts from a supplier called AOG Technics, Bloomberg reported.

The European Union Aviation Safety Agency issued a notification about the London-based supplier last month, suspecting unapproved parts.