The Federal Aviation Administration FAA told Boeing it had not completed the work needed to certify the 737 MAX 7 by December, according to a letter seen by the Federal Aviation Administration.
The FAA executive director of aviation safety, Lirio Liu, told Boeing in the Sept. 19 letter that the agency had concerns about the planemaker's submissions.
The FAA ordered all remaining System Safety Assessments SSAs turn in by mid-September if the company intends to meet its project plan of completing certification work and receiving FAA approval for this aircraft by December. As of Sept. 15, just under 10% of the SSAs have been accepted by the FAA, and another 70% of these documents are in various stages of review and revision.