AIR MANAGEMENT SYSTEM

Question 1

MAX DIFF PRESSURES?

Answer 1

• 9.4 PSI MAX
• 9.6 PSI MAX OVERPRESSURE
• -0.3 PSI MAX NEGATIVE
• 0.2 PSI MAX FOR TAKEOFF AND LANDING

Question 2

WHAT HAPPENS WHEN THE TEMPERATURE ON THE GROUND IS 30C AND BOTH ENGINES ARE RUNNING?

Answer 2

• BOTH BLEEDS ARE CLOSED AND THE VAPOR CONDENSOR SYSTEM IS TURNED ON AUTOMATICALLY BY THE ACS CONTROLLER

Question 3

WHAT HAPPENS WHEN THE TEMPERATURE ON THE GROUND IS BETWEEN 8C AND 30C AND BOTH ENGINES ARE STARTED?

Answer 3

• ONLY THE FIRST ENGINE STARTED WILL OPEN THE VALVE ON THAT SIDE

Question 4

WHAT DOES THE ‘DUMP’ BUTTON DO?

Answer 4

• OPENS THE OUTFLOW VALVE IN A CONTROLLED MANOR
• DEPRESSURIZES THE CABIN TO A PRE-DETERMINED LEVEL
• TURNS OFF RECIRC FANS
• 12,000 IN AUTO, 14,500 IN MANUAL

Question 5

WHICH ENGINE BLEED SYSTEM CONTROLS WHICH PART OF THE AIRCRAFT?

Answer 5

• LEFT ENGINE = COCKPIT
• RIGHT ENGINE = CABIN

Question 6

WHEN DO THE OXYGEN MASKS DROP?

Answer 6

• 14,700 +/- 200FT

Question 7

HOW LONG DOES IT TAKE TO FULLY OPEN THE OUTFLOW VALVE MANUALLY?

Answer 7

• 6 SECONDS BUT THE CHECKIST ALLOWS FOR 10

Question 8

WHEN WOULD YOU SEE THE ‘HI FIELD’ ANNUNCIATION?

Answer 8

• ECS CONSIDERS A FIELD ABOVE 9,600 FT AS HI
• CABIN ALT WARNING IS RESET TO 14,200 FT
• SYSTEM RESETS TO NORMAL AND MESSAGE DISAPPEARS AT 25,000 FT

Question 9

WHAT DOES THE GROUND COOLING FAN DO?

Answer 9

• COOLS THE HEAT EXCHANGERS ON THE GROUND