2014: Malaysia Airlines Flight 370
Malaysia airlines passenger jet MH370 went missing more than two weeks ago with 239 on board.
The Malaysian government has since announced the plane is believed to have crashed in the southern Indian Ocean, where there have been several sightings of debris.
It is not yet known what caused the jet to go off course but the case has sparked much speculation and numerous theories.
2009: Air France Flight 447
Air France Flight 447 departed Rio de Janeiro to Paris on May 31, 2009 and its last communication was delivered while travelling across the Atlantic.
An investigation into the plane's fate stretched for almost two years before the bulk of the wreckage and passengers' bodies were recovered from the ocean floor.
The government later announced that ice had disrupted the system used for measuring airspeed, which caused the autopilot to disconnect.
1947: Star Dust
In 1947, British South American Airways airliner "Star Dust" went missing en route from Buenos Aires to Santiago, Chile.
A widespread search failed to bring any answers about the plane's fate and it wasn't until the 1990s – when pieces of wreckage were discovered – that more became known.
It was discovered that the plane had crashed into Mount Tupungato, in the central Andes mountains of South America, killing all 11 people on board.
1n 1998, a pair of Argentinian mountaineers discovered plane wreckage and alerted authorities. A subsequent search uncovered human more debris and human remains.
Stardust's final communication was a Morse code message: "STENDEC." To this day, it is not known what this word means.
1945: Flight 19
Flight 19 was a group of five TBM Avenger aircraft that disappeared over the Bermuda Triangle in 1945.
The aircraft were undertaking a navigation training exercise when they went missing on December 5.
All 14 pilots were killed.
It was later revealed that each plane was fully fuelled it was never discovered what caused the planes to go missing.
1957: Pan Am Flight 7
Pan Am Flight 7, the "Clipper Romance of the Skies," departed San Francisco on November 8, 1957, bound for Honolulu.
A large-scale search effort was launched and on November 15, a US Navy vessel discovered plane wreckage and bodies in the sea.
The cause of the accident has never been determined.
1996: TWA Flight 800
Trans World Airlines Flight 800 exploded mid-air and crashed into the Atlantic Ocean on July 17, 1996.
All 230 people on board the New York-Paris flight were killed.
While it was initially suspected that the crash was caused by terrorism, The National Transportation Safety Board later announced there was no evidence of criminal activity.
A four-year investigation resulted in findings that the crash was likely caused by an explosion in the fuel tank.
