RNP to precision approach transition flight simulations

• RNP to xLS simulations in 6 different aircraft types with simulated navigation position errors (0.05–0.3NM) • Procedures coded without 2NM intermediate straight segment • Significant differences in lateral intercept capability: • Direct LNAV to LOC transition not always possible (requires HDG mode as intermediate step) • Aircraft position within LOC FSD at end of RF turn • Automatic track corrections in some aircraft when undershooting LOC • Overshooting LOC was less problematic than undershooting • Transition from 2° vertical path to 3° glide (with manual input) • Simultaneous LOC / GS capture possible in all aircraft types • Sometimes GS capture from above (when lateral capture problems) • Height to stabilise of 507 feet (95%) after published LOC / GS capture point • This suggests capture above 1500ft (5NM from threshold) • Procedures with intercept leg did not provide any benefits over RF directly to FAF (without 2NM intermediate segment) • Proposed formula that relates TSE to Final Segment Length and LOC configuration: • Intercept at 5NM → TSE < 0, 16 NM • Intercept at 12NM → TSE < 0,31 NM