-- Germany-based aviation group Lufthansa has announced that business conditions in the airline industry are weakening and has reduced its earnings expectations for 2009. -- We are placing the 'BBB' long-term corporate credit and senior unsecured debt ratings on Lufthansa on CreditWatch with negative implications. -- The CreditWatch placement reflects uncertainty pending further details on additional actions that the group might take to offset the decline in its profits. -- Any lowering of the corporate credit rating will likely be limited to one notch. LONDON (Standard&Poor's) June 22, 2009--Standard&Poor's Ratings Services said today that it has placed its 'BBB' long-term corporate credit rating and senior unsecured debt ratings on Germany-based aviation group Deutsche Lufthansa AG on