Air Systems Flashcards
When does equipment cooling system configure for flight?
One or more engines on each wing operating
On the ground, when is warm equipment cooling air ducted overboard?
-Engines not operating
-Equip cooling selector in NORM
-Ambient temp moderate or high
Equipment cooling provides cooling air for what compartment and systems?
-Flight deck equipment
-Electrical and equipment rackes (E&E)
How can you manually configure the equipment cooling system for flight?
Selector - STBY
What is the function of the LOWER LOBE CONDITIONED AIR FLOW RATE selector?
Provides fwd and aft cargo lobe conditioned air
What happens if a pack temperature controller (PTC) detects a fault in a pack channel?
Control of pack switches to other PTC
How many pack temperature controllers (PTC) are provided?
Two, A & B
On the -8 with Main Deck and FWD/AFT lower lobe temperature selector in the OFF position, what is the temp zone target?
68F / 20C
747-8, Nitrogen Generation System converts bleed air to nitrogen enriched air for what purpose?
Reduce flammability of CWT fuel
On the -8, what does the alternate ventilation system provide with pack 1+2+3 shutdown and the airplane depressurized?
outside air to the flight deck
On the -8, what position are the MAIN DECK FWD and AFT TEMP selectors normally place in during preflight?
OFF
On the -8, what position is the LOWER LOBE AFT CARGO HT selectors normally placed in during preflight?
Low
On the -8, the TEMP DEV CGO advisory message HI or LO respectively indicate?
HI: 9F / 5C higher than selected temp
LOW: “”-“” lower than selected temp
On the -8 Lower Lobe Aft Cargo Heat Selector regulates temperature control valve to maintain at least:
____F/____C in LOW
&
____F/____C in HIGH
40F / 4C LOW
50F / 10C HIGH
The -8 ECS Left and Right trim air is providced to which temperature zones?
Left Trim Air:
-Flt Deck
-Upper Deck
-Crew Rest
-Aft Main Deck
Right Trim Air:
-Fwd Main deck
-Fwd Lower Lobe
-Aft Lower lobe
