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ForeFlight’s Takeoff & Landing Performance feature allows you to specify a safety distance factor to produce more conservative runway performance calculations in response to runway conditions or other factors. Takeoff & Landing Performance is included in ForeFlight Performance plans and supports many piston and single-engine turboprop aircraft types.
In March of 2019, the FAA issued a Safety Alert detailing the importance of including a landing distance factor in landing performance calculations based on runway conditions. Even for dry runways, the FAA suggests multiplying the original landing distance result by a factor of 1.67 to increase the safety margin.
You can specify your own safety distance factor for both takeoff and landing directly in ForeFlight’s Takeoff and Landing Performance views. After planning a flight using an aircraft that supports Takeoff & Landing Performance, tap either of the Takeoff or Landing buttons near the top of the Flights view and select a runway to calculate the initial distance results.
Tap the Safety Distance Factor line at the bottom of the Aircraft Configuration section to enter a new number between 1 and 10. ForeFlight multiplies the initial distance result with this number to produce the final result, so specifying a factor of 1.5 will increase your desired distances by 50%, a factor of 2.0 will double them, and so on.
You can specify different Safety Distance Factors for takeoff and landing, as well as for different aircraft profiles. ForeFlight saves and automatically applies each factor on future flights with the same aircraft, making it easy to customize each aircraft’s safety factor and reuse it on the next flight.
