GCUs Can Shut Down In Flight If They Are Not Cycled Periodically
The FAA has issued an AD (2015-09-07) after being advised by Boeing of an issue identified during laboratory testing. The software counter internal to the generator control units (GCUs) will overflow after 248 days of continuous power, causing that GCU to go into failsafe mode.
Lufthansa says it is offering a further concession to the Vereinigung Cockpit (VC) flight crew union in the ongoing round of collective bargaining talks. The union has repeatedly demanded general arbitration. In order to avoid new strikes at the expense of the passengers, Lufthansa offers VC general arbitration of all open collective wage agreements.
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