3 MONTHS UNTIL DAY BEFORE DoOPS:
SET UP FOR ROBUSTNESS

Combine multiple sources of information and constraints and compute data in a short time

Re-assess schedule closer to departure and optimize based on current demand and set up schedule and operations up for robustness

Examples: Risk-based tail allocation, swapping tail or crew assignments, and proactively cancelling (set of) flights

3 MONTHS UNTIL DAY BEFORE DoOPS:SET UP FOR ROBUSTNESS