Travelers coming through a busy New York City airport had a security scare Tuesday night after a pilot accidentally entered a hijack alert.

According to FoxNews.com, JetBlue Flight 1623 was scheduled to take off for a journey to Los Angeles from John F. Kennedy International Airport at 7:30 p.m. ET when the plane stopped responding to air traffic control communications.

The loss of response to the tower was caused by the pilot entering a hijack alert by mistake, which caused the Port Authority Police Emergency Services to send heavily armed officers to board the plane and investigate the terror notice.

Several of the passengers on the JetBlue flight believed they were experiencing a terrorist attack.

“I hate guns. They were pointing them, like, at us. It was traumatizing,” passenger Alexa Curtis told CBS Los Angeles. “People were, like, crying. Everyone’s texting their family, and we were on ground, so usually this would happen in the air if it was going to happen. People were ready to die.”

The Federal Aviation Administration also released a statement about the accidental hijack alert:

“JetBlue 1623, an Airbus A320, experienced a radio equipment problem while taxing for departure at John F. Kennedy International Airport tonight at 8 p.m. The crew requested to return to the ramp. The FAA will investigate.”

Port Authority spokeswoman Lenis Rodrigues said the JetBlue aircraft was inspected and authorities cleared it before deeming there was no security threat.