Air/Pneumatics Flashcards
BLEED TRIP OFF (amber) light indicates the Engine Bleed Air Valve automatically closed due to excessively _____ engine bleed air temperature _______ .
high / or high pressure
Conditions permitting the TRIP RESET switch resets the _____ .
BLEED TRIP OFF, ZONE TEMP and PACK lights.
With the ISOLATION VALVE SWITCH in AUTO the ISOLATION VALVE ______ .
opens when any ENGINE BLEED AIR switch or any conditioning PACK switch is OFF.
The APU Bleed Valve with an Engine Bleed Air Valve open can _____ .
be opened when starting engines but avoid engine power above idle.
DUAL BLEED (amber) light illuminates when APU Bleed Air Valve is open and ____.
No. 1 Engine BLEED Valve Switch is ON or No. 2 Engine BLEED Valve Switch is ON with ISOLATION VALVE open.
The WING-BODY OVERHEAT (amber) light indicates _____.
a bleed air leak in a critical area.
A single pack in high flow mode is capable of maintaining the pressurization and acceptable temperatures throughout the aircraft up to the ______.
Maximum Certified Altitude
A ______ Valve pneumatically modulates to control airflow into the respective Air Conditioning Pack base on air conditioning demands.
Pack
With one pack not operating the other pack automatically switches to “high air flow” ____
inflight with flaps retracted
With both RECIRC FAN switches on AUTO and both PACK switches on AUTO _____ Recirculation Fan(s) operate(s).
Both
The Air Recirculation Fans draw warm air from _____.
all of the above
Illumination of a ZONE TEMP (amber) lights indicate a zone supply duct overheat and the associated _____ .
Trim Air Modulating Valve closes
Position PACK switches _______ when using external conditioned air.
OFF
Is it possible to control from the flight deck the temperature of conditioned air from an external air source?
No, the flight deck controls are ineffective in controlling or modifying external air temperatures.
Packs produce air temperature to satisfy the _____.
zone requiring the most cooling.
Failure of the primary Flight Deck zone temperature control causes ______.
automatic switch to backup control and illumination of CONT CAB ZONE TEMP (amber) light on Master Caution Recall.
Positioning all Zone Temperature Selectors to OFF causes pack controls to _____ .
maintain 75 degrees F on the left pack and 65 degrees F on the right pack.
The ______ provides and Equipment Cooling alert if an over temperature occurs on the ground.
Crew Call Horn in the nose wheel well.
The Overboard Exhaust Valve (OEV)_____.
when closed diffuses equipment cooling exhaust air around the lining of the Forward Cargo Compartment.
The Outflow Valve Position Indicator operates with the Pressurization Mode Selector in _____ .
any position
OFF SCHED DESCENT (amber) illuminates if the _____/
aircraft begins to descend without reaching the preset cruise altitude
Upon descent the Cabin Pressurization Controller _____ if OFF SCHED DESCENT light (amber) remains illuminated.
pressurizes cabin to takeoff airport altitude.
With Cabin Pressurization Mode Selector in MAN a _____.
spring-loaded switch open and closes outflow valve
To decrease cabin altitude when using the Cabin Pressurization Mode in MAN _____.
close the outflow valve
Cabin Altitude and ______ warnings use the same aural tone (intermittent horn) when activated.
Takeoff Configuration
