Seat from Global Airlines Flight 33

Origin
Global Airlines Flight 33, en route from London to New York City, disappeared about 50 minutes from Idlewild Airport (now called JFK). It crashed sometime around April 30, 1961.

Effect
This chair was the only surviving part of the plane. When sat in, the victim will be sent to a random point in the past. The victim cannot control where they end up, and they can't come back. A metal rod was attached to the chair, preventing it from being activated.