What additional time needs to be added for departure and climb out from Mercer County Regional Airport?

The additional time needed for departure and climb out from Mercer County Regional Airport is determined by considering the standard climb performance and procedures for the type of aircraft being operated. In this context, 3-1/2 minutes is appropriate because it accounts for the time required to reach a safe altitude during a typical climb-out from this airport, which is influenced by various factors including air traffic and airport-specific procedures.

Understanding climb rates, the departure procedures, and when to transition to cruise mode is vital for ensuring safety and compliance with regulations. This option provides a realistic estimate based on common operational metrics for general aviation departures from similar airports. The other choices, while they might consider slightly different climb profiles or traffic scenarios, do not represent the typical or expected time for a standard departure and climb out from Mercer County Regional Airport.