ISLAMABAD, July 31 (Saba) -- The black-box of unfortunate crashed plane was found on Saturday afternoon after three days of continuous efforts to resolve the mysterious crash in Islamabad, said authorities, according to Kuwait News Agency (KUNA).

The black-box has been found and handed over to the investigation team of Civil Aviation Authorities (CAA), confirmed CAA and Capital Development Authorities (CDA) spokesman. A five-member French team is also helping the CAA team to investigate the cause of crash.

A passenger plane of a domestic airline, carrying 152 passengers and crew members, on Wednesday crashed in the Margalla Hills of Islamabad, killing all onboard. Various rumors had been circling in Islamabad that it could be sabotage attempt. Some suggested that the pilot was unfit.

However, Junaid Amin, Director General CAA, on Friday addressed a press conference rejected such reports and said that the pilot was as fit as according to the rules and the plane also had no technical issue. Federal Interior Minister Rehman Malik told newsmen that as far as any attempt of sabotage is concerned we would only be able to comment on it after the concerned experts find the black-box and investigate the cause.

The black box records information about the performance of an aircraft during flight and are designed to be highly survivable in a crash. In many of the worst aviation accidents, according to answer.com website, the only devices to survive in working order are the Crash Survivable Memory Units (CSMUs) in the black boxes. The remainder of the recorders, including the external case and other internal components, are often heavily damaged.

The survivability of the black boxes, beside other things, also depends on their installation in the tail of the aircraft. The exact location often varies depending on the plane but the recorders are usually stored in the tail since this is usually the last part of the aircraft to impact in an accident.

Saba