AOA System 1-49

Question 1

The AOA system provides angle of attack information on the gage and, when _______.

Answer 1

the gear is extended

Question 2

Anti-ice protection is provided for the AOA system by a ______ in the vane.

Answer 2

heated element

Question 3

As the aircraft angle of attack approaches the angle for stall (approximately _____ on the gage), the AOA computer activates the stick shaker (_____ units), providing
stall warning.

Answer 3

18 units; 15-16

Question 4

How is the AOA gage marked?

Answer 4

1. a red radial at 18 units, which indicates stall;
2. a green arc from 10 units to 11 units, which indicates the normal approach speed (optimum angle of attack or “on-speed”) range;
3. a white diamond at 8.8 units, which indicates the maximum
   endurance angle of attack,
4. a white triangle at 4.9 units,
   which is the maximum range angle of attack

Question 5

When does the AOA indexer, installed on the upper left side of the glareshield in each cockpit, illuminate?

Answer 5

When the landing gear are down and locked,

Question 6

What does the AOA indexer display?

Answer 6

the difference between indicated angle of attack and reference angle of attack

Question 7

For a normal approach with gear down, flaps at LDG and
the PCL set for a three degree approach, the optimum approach speed (amber donut) is approximately _______
at maximum landing weight.

Answer 7

100 KIAS

Question 8

Maximum Endurance AOA

Answer 8

The white diamond at 8.8 units on the AOA gage

Question 9

Maximum Range AOA

Answer 9

The white triangle at 4.9 units on the AOA gage

Question 10

The stick shaker is activated at approximately _______

above stall speed (_____ units).

Answer 10

5 to 10 knots; 15-16