Bombardier says more than one-third of its 147 Global XRS and Global 5000 super-large business jets tied to an emergency airworthiness directive issued on 9 October by Transport Canada have been given a clean bill of health. The mandate, a first forthe types, came after discovery of a seized bearing and fractured bolt in the mechanism connecting the elevator power control unit (PCU) to the elevator of one aircraft and, on another, two additional seized bearings but no fractured bolts. The AD calls for inspecting and lubricating the PCU attach joints of the affected aircraft, those with certain actuators that have accumulated more than l,000h flight time.
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