I picked a mid-size airport thinking it'd be easier to reason about than a hub like JFK, but then I second-guessed myself halfway through because I had no anchor for gate counts.
Choose a well-known airport (e.g., SFO) and break the problem into flights and passengers per flight, then apply a load factor and the proportion of passengers who go through security (departing + some connecting). Use round numbers and state assumptions clearly, then sanity-check the final estimate against known airport throughput.
Pro tip: Mention that you would validate the estimate with real-world data (e.g., TSA throughput reports) and adjust for seasonality or time of day, showing you balance top-down logic with empirical checks.
Confirm whether the estimate is for departing passengers only or includes connecting passengers, and pick a specific airport (e.g., SFO) to anchor the analysis.
Calculate the number of departing flights per day by considering runway capacity, operating hours, and typical airline schedules (e.g., 1,000 flights/day).
Use average aircraft capacity (e.g., 150 seats) and a realistic load factor (e.g., 80%) to get ~120 passengers per flight.
Multiply flights by passengers per flight to get total departing passengers, then add connecting passengers who also clear security (if applicable) and subtract any exemptions (e.g., crew, infants).
Compare the result to known benchmarks (e.g., TSA screens ~2 million people/day nationally) and adjust for airport size, time of day, or seasonality.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.