What items are part of the Air Management System? - ANSWERS• ECS (heating & cooling) • Engine start • Pressurization • Engine and Wing Anti-ice • Water pressure • Hot air leak detection
The pressurization system consists of: - ANSWERS• Cabin outflow valve
• Static pressure port
...
Republic Indoc Study Guide Questions
& Answers
What items are part of the Air Management System? - ANSWERS• ECS (heating &
cooling) • Engine start • Pressurization • Engine and Wing Anti-ice • Water pressure •
Hot air leak detection
The pressurization system consists of: - ANSWERS• Cabin outflow valve
• Static pressure port
• Negative pressure relief valve
• Positive pressure relief valve
• Cabin pressure controller
What provides air for the AMS? - ANSWERS• Engine bleeds
• APU bleed
• External pneumatic source
What is external pneumatic air used for? - ANSWERS• ECS on the ground
• Engine start on the ground
Where is the external ground source panel located? - ANSWERS• Lower fairing
between the wings
What is the primary use for APU bleed air? - ANSWERS• ECS on the ground • Engine
starting on the ground
• Assist with engine start (< FL210)
• Bleed source for pressurization, heating and cooling (< 15,000 ft MSL)
How many bleed regulating valves are in each engine? - ANSWERS2 (1 high stage
bleed valve and 1 engine bleed valve)
How would an APU or Engine bleed button show a detected leak? - ANSWERSAn
amber light illuminates on the button.
9. What does the Overheat Detection System (ODS) observe? - ANSWERS• Engine
bleeds, packs (air conditioning ducts)
• APU bleed
• Plumbing for the wing and engine anti-icing system
• Trim air (rear cabin temperature control on certain Delta aircraft)
10. How many ECS packs are on the aircraft? What provides air for the pack? -
ANSWERS• 2 independent packs (left and right)
• Each engine provides bleed air to its respective pack.
, 11. Can a single pack provide adequate temperature control and pressurization? -
ANSWERS• Yes, up to FL310.
12. What is the maximum altitude for single pack operation? - ANSWERS• 31,000 ft.
13. Where do the packs distribute air to? - ANSWERS• Pack 1 - Flight deck/Cabin
• Pack 2 - Cabin
14. Can a single bleed source power both packs? - ANSWERS• Yes, through the
crossbleed valve.
15. How many recirculation fans recirculate air back into the cabin and flight deck? -
ANSWERS• 2
16. Which cargo bay(s) have ventilation fans? - ANSWERS• Forward
17. What cargo compartment(s) may we transport live animals? Why? - ANSWERS•
Forward • It has air recirculation.
18. Pushing out the RECIRC button turns off? - ANSWERS• Both recirculation fans.
19. Can the APU bleed be used for the anti-ice system? - ANSWERS• No.
20. What happens when the XBLEED button on the panel is pushed out? - ANSWERS•
It manually closes the crossbleed valve.
21. The DUMP switch is used for? - ANSWERS• Emergency evacuation • Fast cabin
depressurization • Smoke evacuation
22. What happens when the DUMP button is pressed? - ANSWERS• Sets the ECS
packs and recirculation fans to OFF.
• Controls the outflow valve to maintain the cabin altitude rate of climb at 2000 ft/min up
to 12,400 ft.
• When the cabin altitude reaches 12,400 ft it commands the outflow valve full closed.
23. With respect to the DUMP button, which functions are available in Manual mode? -
ANSWERS• When pressed, packs and recirc fans will shut down.
24. Why does the DUMP button have a red-raised border around it? - ANSWERS• So
you can find it in low visibility conditions in the flight deck.
25. The Outflow valve can be modulated ________ or ________? - ANSWERS•
automatically or manually
26. The MAN mode position allows manual control of: - ANSWERS• Outflow valve
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