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DL B717 > Air Systems > Flashcards

Air Systems Flashcards

1
Q

(On Air SD) symbology of flight deck/cabin supply duct temp

A

white- normal

amber- temp exceeds limit

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2
Q

(On Air SD) symbology of flight deck/ cabin selected temp

A

cyan - normal

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3
Q

(On Air SD) symbology of air conditioning pack

A

white- commanded off, no air flow
green (vaned)- commanded on, normal flow
amber- commanded off, normal flow
amber (vaned)- commanded on, no airflow

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4
Q

(On Air SD) symbology of cabin rate climb/descent

A

white- within normal limits

amber- exceeds normal limits

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5
Q

(On Air SD) symbology of outflow valve position

A

white - normal

blank - no data

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6
Q

(On Air SD) symbology of bleed air valve

A

white- commanded off (horizontal lines) or on (vertical lines)

green- commanded on with engine running

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7
Q

(On Air SD) symbology of bleed air temperature

A

white - normal

amber- exceeds upper limit or temperature low with wing/tail anti ice selected on

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8
Q

(On Air SD) symbology of bleed manifold pressure

A

white - normal

amber - exceeds high and low limits

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9
Q

(On Air SD) symbology of flight deck/ cabin actual temp

A

white - normal

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10
Q

(On Air SD) symbology of flight deck/ cabin temp dial

A

blank- auto

white- manual

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11
Q

(On Air SD) symbology of cabin altitude

A

white- normal

red- above 10,000ft

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12
Q

(On Air SD) symbology of differential pressure

A

white- normal

amber- above normal limit

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13
Q

(On Air SD) symbology of landing altitude

A

white - normal (manually input)
magenta - normal (fms generated)
dashes- invalid data

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14
Q

(On Air SD) symbology of outflow valve closed

A

amber- fully closed

white- not fully closed

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15
Q

(On Air SD) symbology of APU

A

blanked- apu air not available
white- apu air available, but no demand (pack off)
green- apu air available, with demand (pack auto)

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16
Q

(On Air SD) symbology of isolation valve

A

white- commanded closed
green- commanded open
amber- valve position disagrees with commanded position

17
Q

function of avionics cooling switch

A

operative in flight only for radio rack cooling.
FAN- primary fan operates. if it fails, backup fan comes on automatically
OVRD- fans are off, venturi valve commanded open, venturi airflow cools radios.

(on the ground, venturi valve closed and both fans stay on all the time)

18
Q

function of the ram air switch

A

off- closed
on- valve commanded open, ram air enters air conditioning ducts.

in flight, provides ventilation when AC not available

don’t use to ventilate on the ground

19
Q

function of pack shutdown switch

A

Both packs will shut down automatically during engine failure on TO below 3000ft or selected off on FMS.

auto- allows pack shutdown during engine failure
ovrd- overrides auto pack shutdown during above conditions

high supply duct temp will also cause auto pack shutdown. Cannot be overridden

20
Q

function of the Flow switch

A

Norm- flow control valve solenoid energized for a lower flow rate. must be in NORM for takeoff

high- solenoid de-energized to provide higher flow rate

21
Q

function of ISOL switch

A

clsd- isolation valve commanded closed, isolating left and right systems
open- allows crossfeed of left and right pneumatic systems
auto- controlled by pneumatic system controller (PSC). allows auto crossfeed during single source operation with airfoil ice selected on

22
Q

location of cabin alt and rate info

A

AIR SD synoptic and secondary engine SD

23
Q

function of instrument panel flow indicator

A

only valid if both packs off. single pack on the ground, cooling fan operates.

on- ground with AC off, indicates instrument panel cooling fan airflow
off- ground with AC off, indicates absence of airflow and cooling fan failure

24
Q

leaving aircraft with apu running for cooling

A

select one pack off. keeps cooling fan operating, prevent DU overheats if apu shuts down.

25
Q

function of gasper boost fan switch

A

provides supplemental airplane ventilation with or without packs operating.

26
Q

function and operation of cabin press control panel

A

SELECT illuminates to indicate failure of both auto cabin press controllers

MANUAL illuminates when pushed, then manipulate landing alt and outflow valve manually

27
Q

FMC packs off takeoff procedure

A

TO/APP key- push
PACKS- line select ON to OFF
look for packs all off alert on EAD

packs will shut off at throttle advance, come back at 3000 agl.

28
Q

fwd / aft cargo bin heating and live cargo

A

in flight, if primary fan operating, fwd cargo compartment electrically heated 60-75F

live animals fwd bin only, fwd of cargo door.

aft bin heated with cabin exhaust air

29
Q

function of pneumatic overheat detection system (pods)

A

detects overheat in tail and along wing and tail ice protection manifolds

if failure detected, PODS automatically closes respective anti ice manifold and alerts crew

automatically tested when engine fire test performed

DL B717 (4 decks)

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