WASHINGTON, May 29 (Reuters) - Boeing ( BA ) said

Wednesday it is making progress on developing a permanent

solution to address an issue with the 737 MAX anti-ice system

that can overheat and could cause an engine failure.

The planemaker in January withdrew a request it filed with

the Federal Aviation Administration last year seeking an

exemption from a safety standard for its forthcoming 737 MAX 7

over the issue, which pushed potential certification into 2025.