["flight_cycles_since_overhaul", "avg_exhaust_temp_c", "avg_vibration_level", "oil_pressure_psi", "fuel_flow_rate_lph", "bleed_air_temp_c", "avg_flight_hours_per_cycle", "routes_flown_30d", "high_altitude_pct", "days_since_last_inspection", "prior_unscheduled_events_12m", "component_age_years", "anomaly_flags_30d", "engine_type_encoded", "temp_x_vibration", "cycles_x_age", "risk_score_manual"]