Air System

Question 1

BLEED TRIP OFF (amber) light indicates the Engine Bleed Air Valve automatically closed due to excessively _____ engine bleed air temperature or______.

Answer 1

high/ high pressure

Question 2

Conditions permitting, the TRIP RESET switch resets the ______. (3 things)

Answer 2

BLEED TRIP OFF, ZONE TEMP, and PACK lights

Question 3

With the ISOLATION VALVE SWITCH in AUTO the ISOLATION VALVE _______.

Answer 3

opens when any ENGINE BLEED AIR switch or any air conditioning PACK switch is OFF.

Question 4

The APU Bleed Valve with an engine Bleed Air Valve open can _____.

Answer 4

be opened when starting the engines, but avoid engine power above idle.

Question 5

DUAL BLEED (amber) light illuminates when APU Bleed Air Valve is open and _____.

Answer 5

No 1 Engine BLEED Valve Switch ON or No 2 Engine Bleed Valve Switch ON with the ISOLATION VALVE open

Question 6

The WING-BODY OVERHEAT (amber) light indicates _____.

Answer 6

a bleed air leak in a critical area.

Question 7

A single pack in high flow mode is capable of maintaining pressurization and acceptable temperatures throughout the aircraft up to the

Answer 7

Maximum Certificated Altitude.

Question 8

A ______Valve pneumatically modulates to control airflow in the respective Air Conditioning Pack based on air conditioning demands.

Answer 8

Pack

Question 9

With one pack not operating, the other pack automatically switches to “high air flow” _____.

Answer 9

inflight with the flaps retracted.

Question 10

With both RECIRC FAN switches on AUTO and both PACK switches on AUTO, _____ recirculation fan(s) operate(s).

Answer 10

both

Question 11

The Air Recirculation Fans draw warm air from _____. (3 places)

Answer 11

the E/E Bay, the passenger cabin, the lining of the forward cargo compartment

Question 12

Illumination of a ZONE TEMP (amber) lights indicate a zone supply duct overheat and the associated _____.

Answer 12

Trim Air Modulating Valve closes.

Question 13

Position PACK switches _____ when using external conditioned air.

Answer 13

OFF

Question 14

Is it possible to control from the flight deck the temperature of the conditioned air from an external air source?

Answer 14

No, the flight deck controls are inefficient in controlling or modifying external air temperatures.

Question 15

Packs produce air temperature to satisfy the _____.

Answer 15

zone requiring the most cooling.

Question 16

Failures of the primary Flight Deck zone temperature control causes _____.

Answer 16

automatic switch to backup control and illumination of CONT CAB ZONE TEMP (amber) light on Master Caution Recall.

Question 17

Positioning all Zone Temperature Selectors to OFF causes pack controls to _____.

Answer 17

maintain 75 degrees F on left pack and 65 degrees on right pack

Question 18

The _____ provides an Equipment Cooling alert if an over temperature occurs on the ground.

Answer 18

Crew Call Horn in the nose wheel well.

Question 19

The Overboard Exhaust Valve (OEV) ______.

Answer 19

when closed, diffuses equipment cooling exhaust air around the lining of the forward cargo compartment

Question 20

The Outflow Valve Position indicator operates with the Pressurization Mode Selector in ______.

Answer 20

any position.

Question 21

OFF SCHED DESCENT (amber) illuminates if the _____.

Answer 21

aircraft begins to descend without reaching the preset cruise altitude.

Question 22

Upon descent, the Cabin Pressurization Controller _____ if OFF SCHED DESCENT light (amber) remains illuminated.

Answer 22

pressurizes the cabin to takeoff airport altitude

Question 23

With Cabin Pressurization Mode Selector in MAN, a

Answer 23

spring loaded switch opens and closes outflow valve.

Question 24

To decrease cabin altitude when using the Cabin Pressurization Mode Selector in MAN _____.

Answer 24

close the outflow valve.

Question 25

Cabin Altitude and _____ warnings use the same aural tone (intermittent horn) when activated.

Answer 25

Takeoff Configuration