What is the first action to take on the 777-300ER if there is a lightning system failure?

What is the first action to take on the 777-300ER if there is a lightning system failure?

• A. Reset the CCP from the attendant panel over the 1R jumpseat
• B. Notify the flight deck
• C. Restart all electrical systems
• D. Turn off the IFE

Answer: (A)

The first action to take is to reset the Centralized Cabin Power panel from the attendant panel located over the 1R jumpseat. This panel controls the distribution of cabin electrical power, and a lightning event can cause transient faults or trips in the system. Resetting the CCP reinitializes the cabin power, clears fault conditions, and often restores normal operation of cabin services (lighting, IFE, galley equipment) without disrupting the rest of the aircraft. It’s a quick, cabin-level remedy that you can perform immediately. If the fault persists after the reset, then you would escalate by notifying the flight deck for further diagnosis and any required actions. Turning off the IFE or restarting all electrical systems isn’t the preferred first step because it can unnecessarily interrupt services and potentially complicate troubleshooting.

The first action to take is to reset the Centralized Cabin Power panel from the attendant panel located over the 1R jumpseat. This panel controls the distribution of cabin electrical power, and a lightning event can cause transient faults or trips in the system. Resetting the CCP reinitializes the cabin power, clears fault conditions, and often restores normal operation of cabin services (lighting, IFE, galley equipment) without disrupting the rest of the aircraft. It’s a quick, cabin-level remedy that you can perform immediately.

If the fault persists after the reset, then you would escalate by notifying the flight deck for further diagnosis and any required actions. Turning off the IFE or restarting all electrical systems isn’t the preferred first step because it can unnecessarily interrupt services and potentially complicate troubleshooting.