ATCS

Question 1

What is the ATCS system and what is its purpose?

Answer 1

The ATCS senses an engine failure through the FADEC system and reduces shaft horsepower on the opposite outboard engine if airspeed is below Vmpr.

Question 2

How is torque reduced on opposite outboard engine with engine failure and ATCS inoperative? How is power applied back?

Answer 2

Torque on the opposite engine is reduced by up to 60% of the TO torque, depending on airspeed. Power is linearly restored to 100% or airspeed is increased over a 30 knot range until Vmpr.

Question 3

What is the rudder force constant rudder force as power is applied again?

Answer 3

120 lbs of force.