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Europe's largest airline group by revenues said the passenger load factor, or proportion of seats sold, rose 0.6 percentage points to 79.7 percent as capacity rose 1.7 percent Air France-KLM estimated at 28 million euros the impact on operating result of the cabin crew strike ,which straddled three days in October and two days in November. In a further sign of weakness gripping freight markets since the summer as Europe's debt crisis dampens the global economy, Air France-KLM said cargo traffic fell 8.1 percent in November. The load factor or percentage of available space sold declined 4.3 percentage points to 68.2 percent.