THE COMPANY/OPERATOR MANAGEMENT'S DECISION TO OPERATE THE AIRCRAFT WITH A KNOWN DEFICIENCY WITHOUT FURTHER MAINTENANCE, THE PILOT'S IMPROPER PLANNING/DECISION AND THE PILOT'S FAILURE TO ABORT THE TAKEOFF (WHILE THERE WAS SUFFICIENT RUNWAY REMAINING). FACTORS RELATED TO THE ACCIDENT WERE: LACK OF POWER IN THE RIGHT ENGINE, AND THE UNFAVORABLE METEOROLOGICAL CONDITIONS AT THE AIRPORT.