FAA Has Received Reports Of Uncommanded Autothrottle Advancement
This Special Airworthiness Information Bulletin advises registered owners and operators of The Boeing Company Model 777 airplanes of the potential for uncommanded autothrottle advancement during ground operations. At this time, the airworthiness concern is not an unsafe condition that would warrant airworthiness directive action under Title 14 of the Code of Federal Regulations (14 CFR) part 39. The FAA has received reports of uncommanded autothrottle advancement (throttles advanced from idle) during ground operations. The majority of events occurred during taxi, and in one event the autothrottles advanced after landing before the speedbrakes were retracted.