This map depicts several International Civil Aviation Organization (ICAO) flight information regions (FIRs). Air traffic controllers lost contact with Malaysia Airline Flight 370 near the region where Malaysia, Thailand, Vietnam and Singapore FIRs intersect (marked by the red dot). Courtesy of the International Civil Aviation Organization

This map depicts several International Civil Aviation Organization (ICAO) flight information regions (FIRs). Air traffic controllers lost contact with Malaysia Airline Flight 370 near the region where Malaysia, Thailand, Vietnam and Singapore FIRs intersect (marked by the red dot). Courtesy of the International Civil Aviation Organization

This map depicts several International Civil Aviation Organization (ICAO) flight information regions (FIRs). Air traffic controllers lost contact with Malaysia Airline Flight 370 near the region where Malaysia, Thailand, Vietnam and Singapore FIRs intersect (marked by the red dot). Courtesy of the International Civil Aviation Organization

This map depicts several International Civil Aviation Organization (ICAO) flight information regions (FIRs). Air traffic controllers lost contact with Malaysia Airline Flight 370 near the region where Malaysia, Thailand, Vietnam and Singapore FIRs intersect (marked by the red dot).
Courtesy of the International Civil Aviation Organization