A team from France-based ATR will help probe the PK-661's Haveliyan crash of Dec 7 with a group of experts affiliated with the aircraft manufacturer expected to arrive in Pakistan in the next 24 hours, aviation sources told DawnNews.
Sources added that the French embassy has also ensured full cooperation in the investigation.
The plane's black box and audio recorder will be sent to France on Monday or Tuesday, sources told DawnNews, adding that data retrieved from the black box and recording device in France will be handed to Pakistan's Safety and Investigation Board (SIB).
Sources said data analysis will take another two to three weeks, adding that data decoded from the black box and the voice recorder will determine the direction of the investigation.
The PIA flight carrying 48 passengers and crew crashed on the way to Islamabad from Chitral on Wednesday. The Civil Aviation Authority confirmed there were no survivors from the ill-fated flight.
Popular singer-turned-preacher Junaid Jamshed also perished in the crash along with his wife.