Washington (CNN) Boeing has developed a software patch and pilot training program to address issues with the Boeing 737 MAX identified in the October Lion Air crash, the Federal Aviation Administration said Wednesday.

The FAA and other airplane regulators worldwide grounded the 737 MAX a week ago following a crash in Ethiopia. The agency said data and physical evidence shows similarities between the Ethiopian Airlines crash and the Lion Air crash less than six months ago.

On Wednesday, the FAA provided an incremental update on its fix to the plane, which it has previously said will be rolled out "no later than April 2019."

"The FAA is aware that Boeing is developing a Service Bulletin that would specify the installation of new flight control computer operational program software," the FAA said in an international notice.

"Boeing has also developed flightcrew training related to this software," it said. "The FAA's ongoing review of this software installation and training is an agency priority, as will be the roll-out of any software, training, or other measures to operators of the 737 MAX."

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