Flashcards in Air System Deck (25)
BLEED TRIP OFF (amber) light indicates the Engine Bleed Air Valve automatically closed due to excessively _____ engine bleed air temperature or______.
high/ high pressure
Conditions permitting, the TRIP RESET switch resets the ______. (3 things)
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 air conditioning PACK switch is OFF.
The APU Bleed Valve with an engine Bleed Air Valve open can _____.
be opened when starting the 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 ON or No 2 Engine Bleed Valve Switch ON with the 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 pressurization and acceptable temperatures throughout the aircraft up to the
Maximum Certificated Altitude.
A ______Valve pneumatically modulates to control airflow in the respective Air Conditioning Pack based on air conditioning demands.
With one pack not operating, the other pack automatically switches to "high air flow" _____.
inflight with the flaps retracted.
With both RECIRC FAN switches on AUTO and both PACK switches on AUTO, _____ recirculation fan(s) operate(s).
The Air Recirculation Fans draw warm air from _____. (3 places)
the E/E Bay, the passenger cabin, the lining of the forward cargo compartment
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.
Is it possible to control from the flight deck the temperature of the conditioned air from an external air source?
No, the flight deck controls are inefficient in controlling or modifying external air temperatures.
Packs produce air temperature to satisfy the _____.
zone requiring the most cooling.
Failures 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 left pack and 65 degrees on right pack
The _____ provides an 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 ______.
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 the cabin to takeoff airport altitude
With Cabin Pressurization Mode Selector in MAN, a
spring loaded switch opens and closes outflow valve.
To decrease cabin altitude when using the Cabin Pressurization Mode Selector in MAN _____.
close the outflow valve.