The U.S. Federal Aviation Administration (FAA) warned Boeing Co earlier this week the planemaker may not gain certification of a lengthened version of the 737 MAX ahead of a key safety deadline set by Congress, a source told Reuters.
Ian Won, acting manager of the FAA aviation safety office that oversees Boeing, asked the U.S. planemaker in a letter dated March 21 to provide a “mature certification schedule,” according to a source familiar with the letter. Won also sought updates on progress for both the 737 MAX 10 and 777-9.
Both airliner designs are under development. Certification is needed before they can enter service.
