WASHINGTON (AP) — A government watchdog says federal regulators are struggling to implement a sweeping aviation safety law in the face of industry opposition to many of its provisions.

A report by the Department of Transportation's Inspector General says the Federal Aviation Administration has experienced lengthy delays putting in place rules required by the law.

The delayed regulations would increase the amount of experience necessary to be an airline pilot, provide more realistic pilot training and create a program where experienced captains mentor less experienced first officers.