Automatic power reserve (APR) on the Challenger 350 provides 7323 lb of thrust up to what temperature?

The automatic power reserve (APR) on the Challenger 350 is designed to enhance safety and performance by providing an additional thrust capability under specific temperature conditions. The correct response indicates that the APR delivers 7323 pounds of thrust up to ISA+20°C.

This means that in standard atmospheric conditions (ISA), which refers to the International Standard Atmosphere, the Challenger 350 can operate efficiently. However, as temperatures increase above the standard conditions, particularly beyond ISA+20°C, the performance may begin to degrade due to reduced air density and engine efficiency. Therefore, knowing that the APR is effective up to ISA+20°C allows pilots to make informed decisions regarding the aircraft’s performance in warm conditions, ensuring they understand the limits of thrust available to them for takeoff and climb phases in relation to the temperature they are operating in.