Boeing's round-the-clock work schedule is almost entirely devoted to addressing the fastener issue, as well as inspecting each aircraft for additional quality control issues, says one 787 machinist.

To accomplish the task, insulation blankets were removed from the length of all 787 interiors to allow for access to the questionable fasteners. For Dreamliner One, many computer workstations, water barrels and some overhead bins have been installed in the cabin in preparation for the flight-test campaign as well.

Another source working directly with the flight-test aircraft says other improperly installed fasteners have been found that do not meet the initial problematic non-conforming criteria, but adds that the problems are being addressed concurrently with the existing fixes.

Aircraft profile: Boeing 787

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Source: Flight International