US Federal Aviation Administration (FAA) said it saw “no basis” to ground Boeing 737 Max planes, despite two recent similar crashes involving aircraft in the series.

“Thus far, our review shows no systemic performance issues and provides no basis to order grounding the aircraft. Nor have other civil aviation authorities provided data to us that would warrant action,” the statement said on Tuesday.

The statement came amid mounting safety concerns following two crashes involving Boeing 737 Max 8 planes in a short span of five months.

157 people were killed after an Ethiopian Airlines Boeing 737 Max 8 crashed 6 minutes after take-off from Ethiopian capital Addis Ababa on Sunday.

The US Department of State had reported that at least eight Americans were among the victims on the plane that crashed on Sunday.

In October last year, an aircraft operated by Lion Air crashed killing over 180 people in Indonesia.

The European Union and many countries across the world have already banned the use of 737 Max 8 aircraft in their respective airspace.

On Monday, China, too, grounded all of its Boeing 737 Max 8 jets. Australia too followed the suit on Tuesday.

The Ministry of Transport of Indonesia, the Civil Aviation Authority of Mongolia and Ethiopian Airlines also joined the suspension, as did Cayman Airlines.

US lawmakers, experts and industry associations too are calling for its grounding in the US.

According to the FAA, currently 74 Boeing 737 Max 8 planes are operated by US carriers.

Earlier on Tuesday, the FAA had announced that it will take “immediate and appropriate action” once it identifies any issue affecting the safety of the Boeing 737 Max.

The FAA later issued a “Continuing Airworthiness Notification to the International Community for Boeing 737 Max operators,” which is the US regulator’s way of communicating with its counterparts around the world on safety issues.