What volt limit is considered acceptable for external power in the King Air 350?

In the King Air 350, the acceptable voltage range for external power falls between 28.0 and 28.4 volts. This specification is crucial for maintaining the integrity of the aircraft’s electrical systems during ground operations. Voltage outside this range could potentially damage sensitive electronic components or lead to insufficient performance of onboard systems while the aircraft is on the ground or during pre-flight preparations.

When using external power, adherence to this specified range helps ensure that the aircraft's batteries are charged correctly and that electrical equipment operates reliably. Proper voltage also contributes to avoiding situations that could lead to electrical failures, which are critical for the operation and safety of the aircraft. Hence, voltage parameters are established to protect both the aircraft systems and the overall safety of the flight operations.