A small plane crashed at London Southend Airport in Sussex, England, on Sunday, killing all four people on board, according to local officials.

Maria Fernanda Rojas Ortiz was on her first day working aboard a private medical jet when it cork-screwed off the runway and nose-dived into the ground after taking off at Southend Airport

A witness who was at the airport with his family said he saw a “big fireball” after the plane “crashed head first into the ground.”