Japan Airlines Corp. fell into the red in fiscal 2005 due to falling passenger numbers and high fuel prices, marking a stark contrast to archrival All Nippon Airways Co., which had record profits and sales.

According to consolidated financial results released Wednesday, JAL reported a net loss of 47.2 billion yen for the year that ended March 31, compared with a net profit of 30 billion yen the year before.

The nation's largest carrier reported an operating loss of 26.8 billion yen. Last year, it logged an operating profit of 56.1 billion yen.