Oral Bank - AIR SYSTEMS Flashcards
When does the equipment cooling system configure for flight?
One or more engines on each wing is operating
On the ground, when is warm equipment cooling air ducted overboard? (3)
- Engines not operating
- Equip cooling selector in NORM
- Ambient temperature moderate or high
Equipment cooling provides cooling air for what compartment and systems? (2)
- Flight deck equipment
- Electrical and Equipment racks (E & E)
How can you manually configure the equipment cooling system for flight?
Equipment Cooling Selector to STBY
What is the function of the Lower Lobe Cargo Conditioned Air Flow Rate selector?
Provides conditioned air to forward and aft cargo lobe
What happens if a pack temperature controller (PTC) detects a fault in a pack channel?
Control of the respective pack switches to the other PTC
How many pack temperature controllers (PTC) are provided?
Two (A and B)
On the 747-8 with Main Deck and FWD/AFT lower lobe temp selector in the OFF position, what is the temperature zone target?
20 degrees C (68F)
747-8, the Nitrogen Generation System coverts bleed air to nitrogen enriched air for what purpose?
Reduce flammability of center wing tank fuel
On the 747-8, what does the alternate ventilation system provide with Pack 1+2+3 shutdown and the airplane depressurised?
Outside air to the Flight Deck
On the 747-8, what position are the MAIN DECK FWD and AFT TEMP selectors normally placed in during preflight?
Off
On the 747-8, what position is the LOWER LOBE AFT CARGO HT selectors normally placed in during preflight?
Low
On the 747-8, the TEMP DEV CGO advisory message HI or LO respectively indicate?
HI: 5 degrees C higher than selected temp (9F)
LO: 5 degrees C high than selected temp (9F)
The 747-8 Lower Lobe Aft Cargo Heat Selector regulates the temperature control valve to maintain at least __________ in LOW position and ___________ in HIGH position?
LOW: 4 degrees C (40F)
HIGH: 10 degrees C (50F)
The 747-8 ECS Left and Right trim air is provided to which temperature zones?
LEFT: Flight Deck, Upper Deck, Crew Rest, Aft Main Deck
RIGHT: Forward Main Deck, Forward Lower Lobe, Aft Lower Lobe
When is descent mode, will the cabin altitude controllers program a positive or a negative pressurisation at touchdown?
Small positive pressure
What action would allow manual operation of the pressurisation system?
Both Outflow Manual switches to ON
When does the cabin altitude controller switch from controllers? (2)
- Automatically selects A or B on alternate flights
- If the other fails
How many cabin altitude controllers are provided?
Two (A and B)
How can you gain manual control of the landing altitude?
By pushing the LDG ALT switch
What does the Zone System (SYS) Fault Light indicate? (3)
- Temp zone duct overheat or zone temp controller fault has occured
- Master trim air valve failed closed
- Master trim air valve closed and pack air continues to flow
Under what conditions would High Pressure (HP) air be used? (2)
- Descent
- Other low power setting operations
How would you isolate a bleed air duct section in the event of a bleed duct leak? (2)
- Close the respective isolation valve
- Close the engine bleed air valves
What does a bleed duct isolation (ISLN) VALVE light indicate?
Isolation valve disagrees with switch position
When bleed air pressure is available the Engine Bleed Air Switches control which valves by system logic? (3)
- PRV
- HP Bleed Valve
- Engine Bleed Air Valve
Describe the general function of pressure regulating valve (PRV)?
Prevents damage to ducting and equipment downstream by limiting bleed air pressure
Under what conditions would Intermediate Pressure (IP) air be used?
High power setting operations
With a right duct isolated, how will this affect the hydraulic systems? (2)
- Hydraulic demand pump 4 is turned off
- No hydraulic system 3 and 4 reservoir pressure
With the EICAS message STARTER CUTOUT 1,2,3,4 show, will Nacelle anti-ice be available for the related engine?
No
With a right duct isolated, how will the affected leading edge flaps extend?
The right wing LEF operate electrically in secondary mode
