Crew Scheduling Best Practices for Charter Operators | FlyAXS
A practical guide to crew scheduling for Part 135 operators, covering duty time management, fatigue prevention, scheduling tools, and strategies for balancing crew utilization with regulatory compliance.
FAR 135.267 Compliance First
Every scheduling decision must simultaneously verify compliance across all FAR 135.267 time periods: the 10-hour rest look-back, daily flight time limits (8 hours single pilot / 10 hours two-pilot), quarterly 500-hour limit, two-quarter 800-hour limit, annual 1,400-hour limit, and the 13 days off per quarter requirement.
Fatigue Risk Management
Regulatory compliance is the floor, not the ceiling. FlyAXS uses a 5-factor fatigue algorithm: duty time (30%), rest time (25%), duty frequency (20%), flight time (15%), and circadian rhythm (10%). A pilot who is legal may still present elevated fatigue risk, especially on early-morning departures or after time zone crossings.
Optimal Crew Utilization
Industry benchmarks suggest 70–85% of maximum allowable hours represents healthy utilization. Below 60% indicates overstaffing or poor scheduling efficiency. Above 90% risks burnout and turnover. Target 80–100 monthly flight hours per pilot as a practical range.
Scheduling Technology
Manual spreadsheets break down with more than 2–3 pilots. Purpose-built scheduling software like FlyAXS automatically calculates rolling FAR limits, prevents violations before they occur, matches crew by type rating and medical currency, and maintains audit-ready records for every assignment.