Fuel Jettisoning Conditions
JAR 25.1001 Subpart A FAR 25.1001 Subpart E
“JAR/FAR 25.1001
A fuel jettisoning system must be installed on each aeroplane unless it is shown that
the aeroplane meets the climb requirements of Approach Climb gradient and Landing
Climb gradient at maximum take-off weight, less the actual or computed weight of
fuel necessary for a 15-minute flight comprised of a take-off, go-around, and landing
at the airport of departure with the aeroplane configuration, speed, power, and thrust
the same as that used in meeting the applicable take-off, approach, and landing climb
performance requirements of this JAR-25.”
When the Maximum Takeoff Weight (MTOW), less the weight of fuel
necessary for a 15-minute flight (including takeoff, approach, and landing at the departure airport) is more than the maximum go-around weight, a fuel jettisoning system must be available.