日本航空減支出

The Excite News recently reported the following:

日本航空が策定中の経営改善計画の全容が１４日、明らかになった。国際線のうち中国線をはじめとする２４路線の廃止・減便など国内外の路線見直しにより、２０１１年度までの３年間に航空関連事業の売上高で０８年度に比べ２割縮小する。営業費用も３割削減。不採算の国際線は海外の航空会社との共同運航に委ね、国内線の収益強化を軸にした再建を目指す。計画の柱の一つである人員削減は、約６千人に拡大する。

On the 14th of this month the content of the management improvement plan of Japan Airlines was made known. Among the international flights, 24 routes to China would be reduced or canceled. In the three years up to 2011, total air routes would be reduced by 20% compared with the business height of 2008. The operating expense would be reduced by 30 percent. As for that non-profitable international flights, the company would arrange join operation with overseas airlines, the aims of this restructuring was to enhance domestic flight income. One of the pillars of the plan was to downsize which would affect about 6,000 people.

After reading the above, I am wondering how long it would take for Japan Airlines to make its air travel business profitable again.