Aircraft Instruments Flashcards
What do the green, yellow, and red arc markings on an instrument mean?
Green indicates normal operating range, yellow indicates caution operating range, and red indicates prohibited operating range.
What does an angle of attack (AOA) indicator provide for the pilot?
The AOA offers a visual indication of the amount of lift the wing is producing at a given airspeed or angle of bank. The AOA delivers critical in- formation to indicate the actual safety margin above an aerodynamic stall.
What is the purpose of a stick shaker used on some aircraft?
It provides an artificial stall warning to the pilot.
Why is it important for a stall warning system to be adjusted correctly?
A stall warning system is adjusted to allow sufficient margin and warning prior to an actual stall.
What systems does a takeoff warning system monitor?
The takeoff warning system senses when the power lever is advanced and checks for proper position of flaps and trim systems. A warning horn and caution light will be activated if the takeoff configuration is incorrect.
What conditions are indicated by a landing gear warning system?
A red light will illuminate if any of the gear is in an unsafe condition. A green light shows when all landing gear are down and locked. An aural warning will sound a horn if the landing gear are not down when the throttles are retarded for landing.
