The police and the Swedish Accident Investigation Board, SHK, continue their work of collecting information to find out what caused the plane crash on Thursday, where all nine on board died.

The mobile phones and cameras found in the plane have not yet been analyzed.

- I have no great hope that any information in there is of value to us.

We will of course go to the bottom with everything, but normally you do not film anything during the start, says Peter Swaffer.

Received recording from a private person

According to Peter Swaffer, there were no cameras from the airport that captured the aircraft during the accident.

The police are calling for film material from private individuals.

Something that, on the other hand, could give a clue as to what was behind the crash is an audio recording that was received from a witness.

Both SHK's sound laboratory and the police's sound technicians have been put to work.

- Such sound can be of value.

At an advanced level, you can filter out everything so that only the engine you hear.

From that sound you can then go in and determine different frequencies and with quite high accuracy say what the speed of the motor is.

If we hear that something deviates, it is of interest, says Peter Swaffer.

The engine is handled separately

For SHK, Saturday's work is largely about collecting all parts of the aircraft wreckage.

Sensitive instrumentation and electronics from the plane and engine compartment are removed separately.

The engine is handled separately and transported away in a protected box.

On Sunday afternoon, it is expected to be able to salvage everything from the accident site.

- We proceed cautiously, we do not want to risk destroying anything even more.

If something is fragile, we have to do a function check to see if there is anything to pick up before we disassemble it.

Can ask for external help

The parts will initially be transported directly to SHK's premises in Strängnäs.

There, an initial assessment will be made with the entire investigation team and experts before parts are shipped on for external help.

As an example, Peter Swaffer mentions the aircraft engine manufacturer Pratt and Whitney in Canada.

- The Canadian Accident Investigation Board can be our extended arm, says Peter Swaffer.

So far, the Accident Investigation Board has been able to map a probable course of events for the accident.

The plane must have gotten into difficulties shortly after takeoff, at an altitude of about 100 meters and then made a sharp left turn to then go into the ground.