An investigation team from French company ATR on Tuesday visited the crash site of ill-fated Pakistan International Airlines (PIA) PK-661 near Havelian.
The team comprising French and Canadian nationals arrived in Islamabad on Monday and will probe the crash alongside officials from the Safety Investigation Board.
Evidence will be collected from the crash site and according to sources the black box of the plane will be taken to France.
On December 7, ATR-42 aircraft of PIA crashed into the hills near Havelian area of district Abbottabad, claiming the life of 42 passengers and five crew members. Among those who lost their lives was Junaid Jamshed.
PIA has grounded its entire fleet of ATR aircraft as the Civil Aviation Authority (CAA) ordered holding shakedown tests.
The airlines chairman, Azam Saigol also tendered his resignation citing personal grounds.