| http://www.w3.org/ns/prov#value | - The Combat Edge problem does not explain why some mechanics have also suffered from hypoxia while working on the planes on the ground.The fleet was grounded in May 2011 so the service could check the hypoxia reports, but the order was lifted in September under a return to fly plan, with equipment modifications and new rules including daily inspections of the life-support systems.
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