The crash of Malaysia Airlines Flight 17 in Ukraine has many people thinking about the disappearance and presumed crash of another Malaysia Airlines plane -- Flight 370 -- in March.
While the crash site of MH17 was found within moments -- its point of impact even captured on video -- no wreckage has been found yet for MH 370.
Here's what the planes had in common:
Both flights were on Boeing 777s.
Both flights were connected to Kuala Lumpur. MH 17 was flying from Amsterdam to Kuala Lumpur when it went down over the Ukraine on Thursday. MH370 left Kuala Lumpur for Beijing when it disappeared on March 8. Air traffic controllers lost contact with MH370 over the waters between Malaysia and Vietnam.
MH17 had 295 passengers and crew members on board. MH370 had 239 passengers and crew aboard.
The Russian news agency Interfax says MH17 was shot down. Investigators don't know what brought down MH 370. Theories range from mechanical failure to hijacking to pilot murder-suicide, but without finding the plane or its flight data recorders officials have been unable to say with any certainty what happened on board.
Malaysia is reeling from the second tragedy to hit its national airline in less than five months.
"This is a tragic day in what has already been a tragic year for Malaysia," Malaysian Prime Minister Najib Razak said.
Amid it all, a question: Just how could disaster strike the airline twice in such a short space of time?
"Either one of these events has an unbelievably low probability," said John Cox, president and CEO of Safety Operating Systems and a former airline pilot and accident investigator. "To have two in a just a few months of each other is certainly unprecedented."
"The airline and the Malaysian transport ministry took a lot of hits for the way they handled MH370, due to their inexperience," said Charles Oman, a lecturer at the department of aeronautics and astronautics at the Massachusetts Institute of Technology. "Hopefully they will do better this time."
The accident will surely inflict more financial damage on Malaysia Airlines. Even before the March disaster, it reported losses because of stiff competition from budget airlines. Afterward, passengers canceled flights, and even though the airline is insured, it faces uncertainty over payouts to the victims' families.