>> The Egypt Air Jet that crashed last week showed no sign of technical problems before take off, that's according to Egypt's state owned news paper Al-Ahram. Egypt Air A04 transmitted 11 electronic messages on May the 18th, according to the paper. The first two indicated the engines were functional, the third message came around 3.5 hours into the flight and showed a rise in the temperature of the copilot's window.
About 23 bags of human remains have been collected since Sunday. Earlier on Tuesday, the head of Egypt's forensics authority dismissed a suggestion that the small size of body parts found proved there had been an explosion on board. Reuters' global aerospace correspondent Tim Hepher says it's too early to say what caused the crash.
>> They will only be sure if they actually find chemical residue or traces of an explosion, gas vapor or shrapnel or something like that. In absence of it, they can't be entirely certain because we know that even in cases where we know that aircraft were brought down by a bomb, like the Lockerbie disaster in 1988, most of the passengers weren't found with blast injuries or shrapnel.
>> Investigators do have a few scraps of data. The fourth messages sent by the plane suggests smoke was detected onboard in the forward lavatory and an electronics bay.>> There is some speculation about whether there could have been a fire on board. The problem is this data is not really designed for accident investigation.
>> With investigators struggling to connect the information, finding the black boxes is paramount. But it's a tough ask. With the plane crashing in of the deepest parts of the Med and just 30 days before the batteries run out.