Systems Flashcards
(133 cards)
Left (only) Hyd System Powers?
L/R Inboard Flt Spoilers
L Thrust Rev
Elevator Augmentation Sys
Right (only) Hyd System Powers?
L/R Outboard Flt Spoilers
R Thrust Rev
Rudder
Landing Gear
Both Hydraulic Systems power?
Steering Slats Flaps Brakes/Antiskid Rudder Limiter
HYD CONT RUDDER switch
Reverts Rudder to Manual Operation
Min taxiway width for 180 turn
81 ft
Min crew O2 for dispatch
1000psi
min oil quantity for dispatch
MX station: 9 qts
Non MX station: 7 qts
Min HYD quantity
7 qts per system
Center tank fuel pump preflight
If center tank fuel is present, center pumps must be individually checked to verify operation prior to engine start.
AVIONICS COOLING switch functions:
OVRD
FAN
OVRD: fans are off, venturi valve opens, airflow cools radios
FAN: primary fan cools radios, backup fan will come on automatically
Both fans operate on ground, switch is only operative inflight.
RAM AIR switch:
OFF
ON
OFF: ram air valve closed
ON: Ram air valve opens, allowing ram air to enter air conditioning ducts (in flight only)
Do not use ON position to ventilate on ground
PACK SHUTDOWN switch:
OVRD
AUTO
OVRD: overrides the auto pack shutdown for an engine failure OR when packs are selected OFF on FMC
AUTO: Allows automatic pack shutdown if engine fails
Auto pack shutdown is disabled > 3000AGL
Pack will also auto shutdown if high supply duct temp. This cannot be overridden.
FLOW switch:
HIGH
NORM
NORM: Lower airflow rate (position for T/O)
HIGH: provides a higher airflow rate
Bleed air ISOL switch:
CLSD
OPEN
AUTO
CLSD: isolation valve is closed, isolating L and R pneumatic systems
OPEN: isolation valve is open allowing crossfeed of L and R pneumatic systems
AUTO: isolation valve is controlled by the pneumatic system controller. Allows automatic crossfeed of L and R systems during one bleed source operation with AIRFOIL ICE PROTECTION ON.
Instrument panel FLOW indicator
ON
OFF
ON: on the ground, with a/c off, indicates instrument panel cooling fan airflow
OFF: on the ground, with a/c off, indicates absence of airflow and cooling fan failure
- Indications only apply with both packs off.
- With both packs operating, instrument cooling fan is provided by a/c system (fans are off)
- on ground if one pilot leaves cockpit with APU on, one pack should be selected off so fan operates.
GASPER BOOSTER FAN switch:
ON
OFF
ON: provides supplemental ventilation with or without a/c packs operating
OFF: booster fan is off (switch dark)
How are cargo compartments heated?
Live animal restrictions?
In flight, if primary fan is operating, fwd cargo is electrically heated to 60-75 degrees F.
Live animals only in FWD
Aft cargo is headed with cabin exhaust air
What is PODS?
Pneumatic Overheat Detection System
Detects overheat in Tail Compartment AND along wing and tail A/I manifolds
If A/I manifold fails, PODS automatically closes respective A/I valve and alerts crew
PODS is automatically tested when engine fire test is performed.
when is ENG ANTI ICE required?
OAT 6C or less (10C or less in flight) and any of following:
- visible moisture or vis <1mile
- 3C or less temp/dwpt spread
- Contaminated ramps/taxiways/runways
When are engine run ups required during icing?
40% N1 for 10 seconds every 60 minutes
Standing T/O required.
50% N1 before t/o roll
Standing T/O?
Required during icing conditions
Hold brakes until 50% N1 before start of takeoff roll.
WING ICE DET switch function?
RESET
TEST
RESET: resets system and removes WING ICE DETECTED alert from EAD. System will not reset if ice still detected.
TEST: tests the wing ice detection system
(FUNCTIONS ON GROUND ONLY)
Do not takeoff with WING ICE DETECTED alert displayed
Which cockpit windows are heated? Antifogged?
all 3 pilot windshields are electrically anti iced and electrically anti fogged
Clearview windows are also anti fogged
Which control surfaces are anti iced with bleed air?
Wing slats and horizontal stab leading edge from either or both engines