The Federal Aviation Administration said on Tuesday it will not require any immediate action after convening a review board to consider concerns about Boeing 737 MAX engines after two bird strike incidents on Southwest Airlines planes in 2023.

The NTSB’s decision to open a formal investigation into a December 2023 bird strike involving a Southwest Airlines Boeing 737 MAX 8 will add scrutiny to the rarely needed safety device triggered during the incident that some FAA experts and pilots believe creates unacceptable risk.

The FAA evaluated bird strike concerns on Boeing 737 MAX engines, opting not to require immediate action. The review board found no urgent issue, though further assessments and procedure amendments are being considered.

A technical review by the FAA decided the risk from an engine vulnerability does not warrant immediate action, contrary to an internal report last month.

The Federal Aviation Administration will not be requiring immediate action to the issues that it found on the Boeing 737 MAX engines after convening a review board. The FAA Corrective Action Review Board,