The Boeing 767’s emergency slide became detached mid-flight, leaving passengers scared.

A new blow for Boeing. The emergency slide of a Delta Air Lines airliner flying from New York to Los Angeles came off shortly after takeoff on Friday, April 26. The pilots of Flight 520, who felt “vibrations and pops” after 33 minutes of flight, turned around. They landed at 8:35 a.m. at John F. Kennedy International Airport, ABC News reported, citing the Federal Aviation Administration (FAA).

A skid that broke off during a Boeing 767 flight did not cause any injuries on board the plane carrying 176 customers, two pilots and five flight attendants, Business Insider clarifies.

The location where the slide landed is unknown.

The airline said in a statement that it did not know where the emergency slide from one of the exits fell. “Delta fully supports recovery efforts and is fully cooperating with the investigation (initiated by the FAA),” it wrote. No explanation has yet been provided for the reasons for the incident.

Flexport, which manages global logistics flows, says the aircraft typically remains in service for 30 years. The Boeing 767, delivered to the company in 1990, was naturally taken out of service. Passengers were redirected to other flights to Los Angeles.

The incident joins a long series of others affecting Boeing aircraft. In mid-April, four whistleblowers, including current and former Boeing employees, testified before the US Senate committee on preventing “serious problems” with Boeing’s 737 MAX, 787 Dreamliner and Boeing aircraft, responding by saying it was “confident in safety.” and the durability of the 787 and 777.”