Normally, the CPC switch between active and standby occurs how many minutes after landing?

Normally, the CPC switch between active and standby occurs how many minutes after landing?

• A. 1
• B. 2
• C. 3
• D. 5

Answer: (C)

After landing, avionics need a moment to settle and verify that everything in the system is stable before changing which computer is actively handling essential data. The CPC switch from active to standby is timed to give that stabilization period so the standby unit can be fully initialized, synchronized with the aircraft’s state (ground mode, gear, flaps, sensors), and ready to take over without introducing data discrepancies or misreads. Three minutes is the chosen window because it balances making the handover smooth with not delaying operations more than necessary. Shorter times risk a switch during transient post-landing conditions; longer times would unnecessarily delay the post-landing sequence.

After landing, avionics need a moment to settle and verify that everything in the system is stable before changing which computer is actively handling essential data. The CPC switch from active to standby is timed to give that stabilization period so the standby unit can be fully initialized, synchronized with the aircraft’s state (ground mode, gear, flaps, sensors), and ready to take over without introducing data discrepancies or misreads. Three minutes is the chosen window because it balances making the handover smooth with not delaying operations more than necessary. Shorter times risk a switch during transient post-landing conditions; longer times would unnecessarily delay the post-landing sequence.