June 9 (Reuters) - American Airlines Group Inc said Sunday it is extending cancellations of about 115 daily flights into September due to the grounding of the Boeing 737 MAX.
The largest U.S. airline had previously said it was cancelling flights Aug. 19 after the Boeing Co plane was grounded worldwide in March following two deadly crashes in Indonesia and Ethiopia.
American Airlines said Sunday it is extending those cancellations through Sept. 3. Boeing has yet to complete a certification test flight and formally submit its software upgrade and training changes to the Federal Aviation Administration for approval. (Reporting by David Shepardson; Editing by Lisa Shumaker)