Boeing has warned airlines about potential flaws on the wings of some seven hundred and thirty-seven aircraft, including on the new-generation 737 Max that was grounded after two crashes.

The company has identified possible faulty parts on more than three hundred aircraft worldwide.

The parts, called wing slats, help reduce drag on take-off and landing.

The United state aviation regulator said that the affected parts may be susceptible to premature failure or cracks, while the Federal Aviation Administration Authority added that the issue arose due to an improper manufacturing process.

The President and Chief Executive of Boeing Commercial Airplanes, Kevin McAllister, said in a statement that they are committed to supporting their customers in every way possible as they identified and replaced these potentially non-conforming tracks.

According to the report, the planes were grounded worldwide after a combined three hundred and forty-six people died in two crashes, the first in Indonesia in October followed by one in Ethiopia in March.

It also stated that Boeing is working on a software fix that will allow the Max to begin flying again.