Japan Airlines Co. and All Nippon Airways Co. pledged Friday to administer more stringent alcohol tests for pilots and use new testing equipment in response to recent drinking incidents involving flight crew.

Recent problems involving drunken pilots from Japan's two major airlines have stirred concern and prompted the government to tighten alcohol consumption rules for flight crew.

In a report submitted to the government, JAL said it will introduce new breathalyzers at overseas airports this month and penalize pilots who fail sobriety tests.