The Boeing 737 MAX remains grounded. (FILE)
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WASHINGTON/SEATTLE – The United States Federal Aviation Administration (FAA) has identified a new risk that Boeing Co. must address on its 737 MAX before the grounded jet can return to service, the agency said on Wednesday.
The risk was discovered during a simulator test last week and it is not yet clear if the issue can be addressed with a software upgrade or will require a more complex hardware fix, sources with knowledge of the matter told Reuters.
The FAA did not elaborate on the latest setback for Boeing, which has been working to get its best-selling airplane back in the air following a worldwide grounding in March in the wake of two deadly crashes within five months.
The new issue means Boeing will not conduct a certification test flight until July 8 in a best-case scenario, the sources said, but one source cautioned it could face further delays beyond that. The FAA will spend at least two to three weeks reviewing the results before deciding whether to return the plane to service, the people said.
Last month, FAA representatives told members of the aviation industry that approval of the 737 MAX jets could happen as early as late June.
The world’s largest planemaker has been working on the upgrade for a stall-prevention system known as MCAS since a Lion Air crash in Indonesia in October, when pilots were believed to have lost a tug of war with software that repeatedly pushed the nose down.
A second deadly crash in March in Ethiopia also involved MCAS. The two accidents killed a total of 346 people.
“On the most recent issue, the FAA’s process is designed to discover and highlight potential risks. The FAA recently found a potential risk that Boeing must mitigate,” the FAA said in the statement emailed to Reuters. “The FAA will lift the aircraft’s prohibition order when we deem it is safe to do so.”
Boeing said in a securities filing late on Wednesday that the FAA has asked it to address through software changes a specific flight condition not covered in the company’s already-unveiled software changes.
The U.S. planemaker also said it agreed with the FAA’s decision and request, and was working on a fix to address the problem. (Reuters)