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QRH NON-QRH
ETOPS Significant System
Messages: STANDBY BUS OFF
Condition: One or more of these buses are not energized:
• Standby AC bus • Standby DC bus • Battery bus
After QRH procedures complete. Contact SOC to update condition and review inop systems. Diversion is required.
After QRH procedures complete. Contact SOC to update condition and review inop systems. Diversion is required.
MX procedures that could follow.
