The crash of a Russian plane in Egypt's mountainous Sinai Peninsula is the second major air disaster of 2015 and comes after 2014 saw a series of deadly air crashes.
The following is a list of air crashes that cost 100 or more lives over the past two years:
October 2015: A plane operated by Russia's Kogalymavia airline with 224 passengers and crew on board crashes in Egypt's Sinai Peninsula, shortly after taking off from the holiday resort of Sharm al-Sheikh on its way to Saint Petersburg. Initial reports indicate all those on board were killed.
March 2015: A Germanwings flight from Barcelona to Dusseldorf crashes in the French Alps, killing all 150 on board. German and French investigators have said co-pilot Andreas Lubitz intentionally flew the Airbus A320 into the mountainside.
December 2014: An AirAsia Airbus A320 crashes into the Java Sea off Borneo, midway from Surabaya to Singapore, killing all 162 people on board.
July 2014: A Malaysian Airlines Boeing 777 on its way from Amsterdam to Kuala Lumpur crashes in a rebel-held area of eastern Ukraine. The head of the Dutch investigation team has said it was hit by a rocket fired from territory held by the pro-Russian rebels. Moscow has argued that it could have been shot down by the Ukrainian military.
July 2014: All 116 people on board an Air Algerie McDonnell Douglas MD-83 are killed when it crashes in a remote area of eastern Mali while en route from Ouagadougou in Burkina Faso to Algiers.
March 2014: Malaysia Airlines flight MH 370 disappears without a trace an hour after taking off from Kuala Lumpur heading to Beijing. Experts believe that the Boeing 777 crashed in the southern Indian Ocean after veering off course. In August 2015, Malaysia confirmed that an aircraft flaperon found on Reunion Island east of Madagascar was part of the missing MH370.

Al Bawaba