PRESSURIZATION

Question 1

1. What is the maximum differential pressure?

Answer 1

 9.1PSI

Question 2

2. What is indicated by an AUTOFAIL light illuminated by itself?

Answer 2

 Dual controller failure

Question 3

3. What is indicated by an AUTOFAIL light

illuminated along with the ALTN light?

Answer 3

 Single controller failure

Question 4

4. What is indicated by the OFF SCHED

DESCENT light?

Answer 4

 Aircraft descended prior to (.25 PSI) reaching cruise altitude

Question 5

5. What is the result of changing the FLT ALT setting after takeoff?

Answer 5

 Inhibits auto return feature

Question 6

6. How does the operation of the outflow valve in

manual compare with the operation in AUTO?

Answer 6

 Slower (20 seconds-full closed to full open)

Question 7

7. What condition would cause an AUTO FAIL light to illuminate?

Answer 7

 Excessive rate of cabin change(+/-2000 FPM)
 Loss of DC power
 Controller fault
 Outflow valve problem
 High cabin pressure (>8.75PSI)
 High cabin altitude (15,800FT)

Question 8

8. What does the HIGH ALT LDG Option Switch do?

Answer 8

 Reprograms initiation of cabin altitude warning horn from 10,000 ft to 12,500 ft.