Urgent airworthiness directive issued for Boeing 747-8s

The Federal Aviation Administration today issued an urgent airworthiness directive requiring immediate inspections of Boeing 747-8s to ensure bushings are installed in power control actuators that move the horizontal stabilizers.

This AD was prompted by a report of unusual noise coming from the left inboard elevator during a functional check of the ram air turbine system, and a determination that a bushing was not installed. We are issuing this AD to detect and correct non-installation of bushings. If the bushings are not present, the stiffness of the load path will be decreased, which will cause wear of adjacent parts and increased freeplay of the elevator surfaces. Freeplay that exceeds acceptable limits could result in divergent flutter for certain maneuvers, which could lead to loss of controllability of the airplane.

Boeing issued a service bulletin to operators of 747-8s on Aug. 23. The FAA action today mandates inspection and, if necessary, repair before further flight. The FAA says there are eight 747-8s in service in the U.S. Typically, foreign regulators adopt FAA rules, and there are 56 747-8s in service worldwide.

More in Herald Business Journal

Amazon lists 20 finalists for HQ2, and no, we aren’t on it

Los Angeles was the only West Coast city listed. They seem to like the nation’s capital.

Exotic animals find compassionate care in Bothell (video)

At the Center for Bird and Exotic Animal Medicine, vets treat snakes, hedgehogs and even kangaroos.

Don’t take economic forecasts to the bank — or the casino

Air travel delays could spur a rebirth of passenger rail service.

Emirates orders 20 more Airbus A380 jumbos, saving program

The Dubai carrier also has options to buy 16 more. The program seems safe until 2029.

How do you retrieve an errant Boeing 737 from a muddy slope?

Turkish authorities used cranes to lift a plane that skidded off a runway.

Amanda Strong (left) tries on an Angel of the Winds Arena hat as she and Courtney Brown hand out gift bags after the renaming ceremony Dec. 13 in Everett. The new name replaces the Xfinity name. (Andy Bronson / Her file)
Angel of the Winds to break ground on $60M casino expansion

“We think we’re on the cusp of becoming a major resort.”

House passes bill aimed at lowering gender wage gap

The bill would hinder employers from retaliating against female workers who ask about others’ pay.

Planemaker joins forces with auto-industry supplier Adient

The new venture poses a threat to Zodiac Aerospace and Rockwell Collins

In this Dec. 20, 2017, photo, a clerk reaches to a shelf to pick an item for a customer order at the Amazon Prime warehouse, in New York. (AP Photo/Mark Lennihan, File)
Amazon’s potential HQ2 sites leaves many cities disappointed

Associated Press Amazon’s move to whittle its list for a second headquarters… Continue reading

Most Read