Demystifying Section 5: Performance
The certified Pilot Operating Handbook (POH) is the definitive legal authority for your specific airplane. Section 5 contains exhaustive graphical charts and tabular data generated by test pilots during airworthiness certification. Understanding how to interpolate these charts correctly is vital for safe dispatch planning.
Takeoff Ground Roll vs. Obstacle Clearance
Takeoff performance charts publish two numbers: Ground Roll length and Distance to Clear a 50-Foot Obstacle. Always ensure you correct baseline sea-level numbers for ambient temperature, pressure altitude, and runway surface friction. Departing from grass or gravel runways adds massive rolling drag penalties. Compute your required departure runway footage instantly using our Takeoff Distance Calculator.
Climb Rate and Time-Fuel-Distance to Climb
Never assume your airplane will climb at its sea-level rate ($V_Y$) at high altitudes. Consult the Time, Fuel, and Distance to Climb table. This chart reveals the exact gallons burned and nautical miles covered ascending to cruising flight levels, which must be factored into total trip fuel planning.
Cruise Power Flow and Range Profiles
Cruise performance charts allow pilots to select engine power settings (e.g., 65%, 75% RPM) based on desired economy or speed. These tables dictate your hourly fuel consumption (GPH) and true airspeed. Compare trip costs across different altitude tiers utilizing our Fuel Cost Calculator.
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