“Aircraft struck a bird on departure, damaging the pilot’s side window,” the Federal Aviation Administration (FAA) said in a report, according to Xinhua.

The aircraft involved in the incident, a Boeing 737-9 MAX, had ascended to approximately 5,000 feet after departing on Saturday morning. It safely landed about 25 minutes post-departure.

San Francisco International Airport records an average of 18 strikes for every 100,000 aircraft operations, according to a report by the San Francisco Chronicle.

Due to United Airlines’ recent incidents, such as the loss of a wheel during takeoff from San Francisco International Airport, “the FAA is increasing oversight of United Airlines to ensure that it is complying with safety regulations; identifying hazards and mitigating risk; and effectively managing safety”, the agency said in a statement.