An air ambulance with seven people on board to Delhi from Ranchi crashed near Simaria in Jharkhand’s Chatra district, Ranchi Airport Director Vinod Kumar said.The crash occurred after the air ambulance took off from Ranchi airport around 7.10 pm, the official said.“An air ambulance from Ranchi with seven people on board crashed near Simaria in Chatra district. The report of the crash was received from the state administration,” Airport Director Kumar said.The ambulance had lost contact with air traffic control, he said.