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The 9th stage modulating and shut-off valve:

Correct! Wrong!

The recirculation fan system circulates air from the passenger cabin around thelining of the forward cargo compartment. When the overboard exhaust valve isclosed, exhaust air from the equipment cooling system is also diffused to the lining of the aft cargo compartment for additional inflight heating.

Correct! Wrong!

Forward cargo compartment only.

The wing-body overheat light comes on. What is the related master caution warning?

Correct! Wrong!

How many Trim Air Pressure Regulators are there in the Air Conditioning system?

Correct! Wrong!

From where does the Cabin Auto Controller get its inputs.

Correct! Wrong!

Illumination of the amber BLEED TRIP OFF light indicates what valve has automatically closed?

Correct! Wrong!

The packs produce the coolest temperature selected in any of the zones, with the other zones temperature controlled by adding hot trim air to produce the required temperature.

Correct! Wrong!

Cruising at FL 370. The motorized Overboard Exhaust valve will open if:

Correct! Wrong!

Overheat detection is provided by temperature sensors located:

Correct! Wrong!

The TRIP RESET switch is pushed to reset a PACK, WING-BODY OVERHEAT and BLEED TRIP OFF, it isolates the associated valve and extinguishes the alert.

Correct! Wrong!

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The air data inertial reference units (ADIRUs) provides ambient static pressure,baro corrected altitude, non corrected altitude and calibrated airspeed to bothautomatic controllers. The ADIRUs receive barometric corrections from the Captain's and First Officer's BARO reference selectors. The automatic controllers also receive:

Correct! Wrong!

The ram air system provides cooling air for the:

Correct! Wrong!

A DUCT OVERHEAT light only will cause:

Correct! Wrong!

When pressing Master Caution Recall the CONT CAB amber ZONE TEMP light illuminates.

Correct! Wrong!

What is the position of the isolation valve when the ISOLATION VALVE switch is in AUTO?

Correct! Wrong!

In MANUAL pressurization mode the outflow is driven by?

Correct! Wrong!

The AUTO mode is active. The amber AUTO FAIL light illuminates when:

Correct! Wrong!

A ZONE TEMP light may be reset by the trip reset switch on the Bleed Panel.

Correct! Wrong!

APU bleed air used to start NO.1 engine is:

Correct! Wrong!

During preflight procedure the trim air switch is left in the OFF position and only one pack is selected ON for air conditioning. What is the consequence?

Correct! Wrong!

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The recirculation fans:

Correct! Wrong!

What is the purpose of the recirculation fans?

Correct! Wrong!

The cabin pressure controller controls cabin pressure in the following modes: AUTO (automatic) - ALT (alternate) - MAN (manual).

Correct! Wrong!

What is the flight level limitation for DISPATCH with one pack INOP?

Correct! Wrong!

Where are the wing-body overheat sensors located?

Correct! Wrong!

If all Temperature Selectors are positioned OFF, the pack controls will cause the left pack to maintain a fixed temperature of ____ and the right pack to maintain ____ as measured at the pack temperature sensor.

Correct! Wrong!

One PACK light illuminates on recall only. What does it indicate?

Correct! Wrong!

The APU is capable of supplying bleed air for two packs on the ground, or one pack in flight.

Correct! Wrong!

Where are the bleed trip sensors installed?

Correct! Wrong!

Water tank pressurisation in flight is normally provided by:

Correct! Wrong!

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How are the Engine Bleed Air valves powered?

Correct! Wrong!

When will the descent mode be activated in the pressurization system?

Correct! Wrong!

Given the scenario that the expected cruise level of FL310 was selected into the FLT ALT selector during preflight, but subsequently the aircraft climbed to FL390.

Correct! Wrong!

Cabin altitude is normally rate-controlled by the cabin pressure controller up to a cabin altitude of ____ feet at the airplane maximum certified ceiling of ____feet.

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The amount of fan air that is ducted through the pre-cooler is controlled by the:

Correct! Wrong!

Zone Temperature Control - There are three zones: flight deck (CONT CAB), forward passenger cabin (FWD CAB) and aft passenger cabin (AFT CAB). Desired zone temperature is set by adjusting the individual Temperature Selectors. The selector range is approximately:

Correct! Wrong!

Engine bleed air is obtained from:

Correct! Wrong!

When both the AUTO FAIL light and the ALTN light illuminate:

Correct! Wrong!

What causes the amber PACK TRIP OFF Light to illuminate?

Correct! Wrong!

The isolation valve is:

Correct! Wrong!

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The DUAL BLEED light is illuminated. Engine thrust:

Correct! Wrong!

The altitude warning horn is:

Correct! Wrong!

While taxiing in, the controller drives the outflow valve slowly to the full open position depressurizing the cabin.

Correct! Wrong!

Where is the forward outflow valve located?

Correct! Wrong!

The amber DUAL BLEED Light is illuminated before starting engines. What should you do?

Correct! Wrong!

Takeoff is allowed with Pack switches in HIGH, but landing is not permitted:

Correct! Wrong!

If any individual zone is switched OFF, the Temperature Selector setting will be ignored by the temperature control system.

Correct! Wrong!

The motorized Exhaust valve:

Correct! Wrong!

The differential pressure of the cabin is limited by a pressure relief system - which of the following statements is correct?

Correct! Wrong!

The pneumatic duct pressure gauge:

Correct! Wrong!

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Conditioned air from the left hand pack flows directly to the flight deck from the Mix Manifold.

Correct! Wrong!

In cruise the air conditioning ram air doors are:

Correct! Wrong!

Engine bleed air pressure is controlled by means of the bleed air valve which acts as both a shutoff and pressure regulating valve.

Correct! Wrong!

When operating on the Standby Pack Controls, what temperatures will the packs be producing?

Correct! Wrong!

With a ground pneumatic source connected and the isolation valve switch selected to CLOSE.

Correct! Wrong!

The right WING-BODY OVERHEAT light is illuminated, what area is affected?

Correct! Wrong!

Automatic switching to 'high air flow' occurs if both engine bleed air switches are OFF and the APU bleed air switch is ON, regardless of flap position, air-ground status or number of packs operating.

Correct! Wrong!

What are the causes of an amber AUTO FAIL light?

Correct! Wrong!

What happens when the WING BODY OVHT TEST switch is pressed?

Correct! Wrong!

The cabin will automatically pressurize to 0.125 PSID on the ground when:

Correct! Wrong!

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The maximum differential pressure is:

Correct! Wrong!

If a PACK light can be reset by the TRIP RESET switch then:

Correct! Wrong!

Due to a malfunction you are required to return to the airport of departure. To avoid the OFF SCHED DESCENT warning you reset the FLT ALT. What can you expect?

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The ram air system deflector doors:

Correct! Wrong!

What happens to engine fan air that is used to cool engine bleed air?

Correct! Wrong!

An illuminated BLEED TRIP OFF light indicates:

Correct! Wrong!

What systems need pneumatic power for operation?

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When does the amber DUAL BLEED Light illuminate?

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The amber OFF SCHEDULE DESCENT light illuminates. What does it indicate?

Correct! Wrong!

During descent when the descent mode is activated:

Correct! Wrong!

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If all zone and primary pack controls fail, how is cabin temperatures controlled?

Correct! Wrong!

If all zone controls and primary pack controls fail, the standby pack controlscommand the packs to produce air temperatures which will satisfy the averagetemperature demand of the two cabin zones. The trim air modulating valves will:

Correct! Wrong!

Deflector doors are installed forward of the ram air inlet doors to prevent slush ingestion prior to liftoff and after touchdown. Deflector doors extend when activated:

Correct! Wrong!

Where do the AUTO mode controllers receive their barometric information from?

Correct! Wrong!

Loss of airflow due to failure of an equipment cooling fan results in illumination of the related equipment cooling OFF light. Selecting the alternate fan should restore airflow and extinguish the OFF light within approximately _____.

Correct! Wrong!

What is the primary source of conditioned air for the cockpit?

Correct! Wrong!

An amber AUTOFAIL indication will illuminate if one or more of the following conditions occur:

Correct! Wrong!

The amber DUAL BLEED light indicates apossible APU back pressure condition and thrust must be limited to IDLE.

Correct! Wrong!

A leak in the APU Bleed Air Duct will be indicated by:

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Cabin air outflow is controlled by the outflow valve and the overboard exhaustvalve. A small amount is also exhausted through toilet and galley vents, miscellaneous fixed vents, and by seal leakage.

Correct! Wrong!

Boeing 737NG – Air Systems