Continental Airlines April load factor 77 percent = = = = Monday May 3, 6:59 PM EDT = SEATTLE, May 3 (Reuters) - Continental Airlines (CAL) on Monday said 77 p= ercent of its seats were full in April, up 4.6 percentage points from a y= ear earlier, boosted by sharp gains in international passenger loads. Houston-based Continental, the No. 5 U.S. carrier, estimated its April re= venue per available seat mile, or RASM, rose by 2.5 percent to 3.5 percen= t from a year earlier. = =A92004 Reuters Limited. = Roger EWROPS