The ministry’s spokesman Adita Irawati said the Lion Air planes had a "mid cabin emergency exit door type II" whereas the Alaska Airlines plane had a "mid exit door plug."
The ministry will coordinate with the U.S. Federal Aviation Administration (FAA), Boeing and Lion Air to monitor the situation, he said, adding that operational safety will be a priority.
A Lion Air spokesperson said the airline is conducting further inspection of the planes to ensure the emergency door mechanism works normally.