Adam Air:”Mid-Air Explosion caused crash” – expert
Investigators are looking closely at the small pieces of metal recovered by fishermen and also side scan sonar images of what seems to be debris field some two miles in length.
Experts believe based on the Damage to the parts and fragments that the Adam air flight to Manado may have exploded in mid air.
Sections of the parts shown on Television in Indonesia seem to have been torn and bent in ways that would indicate some form of force that was sudden and violent.
 “… Pare-Pare Police Chief Genot Haryanto told reporters here the fact that fragments of the wreckage were found in an area within a two kilometre radius from the beach led observers in the aviation industry to believe that the aeroplane had exploded in mid-air.
An aviation observer and mathematician, Roy Suryo said if the part of the aircraft’s tail stabiliser, which forms the most enduring part of a plane, that was found was only about a metre in size, it then indicated that the plane had exploded in mid-air causing it to suddenly disappear from the radar. …”  Malaysian News Agency Bernama
With no group stepping forward to claim responsibilty – CT experts are quick to point out that many facotrs can cause a plane to explode. It is highly likely to be weeks before conclusive findingss are released and made public.
A crash investigator repeatedly said to questions regarding the statements made by those at the seen, ” No Comment or speculation” on questions as to what caused the plane to go down.
 “..Indonesia plane search narrows after debris found
Malaysia Star, Malaysia – Pieces of the Adam Air Boeing 737-400 that vanished from radar screens on Jan. 1 with 102 people aboard were found in the past few days at roughly the same … ”