As the multi-nation search and rescue measures are on to find the missing Malaysia Airlines flight, mystery surrounding what could have possibly brought down the Beijing-bound Boeing 777 is deepening.
The whereabouts of the MH370 remains unclear 12 hours after the flight abruptly lost contact while it was travelling over Vietnamese airspace.
The sudden loss of contact has perplexed aviation authorities, who speculate even an explosion or a lost freight door could have brought down the aircraft above South China Sea.
Hours after losing contact with the air traffic control, the whereabouts of the aircraft remain elusive.
The airline has said no distress call was made from the flight and insisted there were no technical glitches before the takeoff.
Geoffrey Thomas, an aviation expert and the editor of airlineratings.com, told Fairfax Media that the plane could have possibly be involved in a "sudden catastrophic explosion" which gives an explanation why no distress call was made.
Thomas also noted that a terrorist bomb or an incident of cargo doors ripping away from jet could have caused such an explosion.
The Malaysia Airlines has so far been regarded as one of the safest operators in the Asia-Pacific region.
The airline has 88 aircraft in its fleet which include Airbus A330s and A380s, and Boeing 777-200s and 737s.
The missing aircraft, a Boeing 777, has clocked up nearly 20,000 normal hours of flying time during its 12-year lifetime. The flying hours are being considered as normal by experts and it is still unclear whether the aircraft's age had any influence on its disappearance.
Boeing 777, the long-range jumbo jet with wide-body, is one of the world's most popular and safest aircraft.
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