Leading Edge Devices Flashcards
Leading Edge Devices
Flaps 1 - All Leading Edge devices with go out.
Kruger flaps -
Extend or not
Slats
4 x Slats
700 Flaps 1,2, or 5 - Extend - Amber / Green
Past Flaps 10-40 - Extended
800 Flaps 1-25 Extend
Contrast 700 / 800
4 x leading edge slats
Limitation
Holing in icing conditions prohibited
stat # 4 not anti-iced
No asymmetry protection
IRS Display and Mode Selector Unit
Test Function - 8 seconds / show faults TK/GS - Track / Ground Speed - True PPOS - Lat / Long Wind - 100Kts HDG/STS -
STS - How long until aligned -count down - DU Ground Sky / numbers on arc / Align light will go out. - Equator - 4 min - 76 N - 17 Minutes - Dallas - 8 min
SYS L and R
IRS Display and Mode Selector Panel (cont)
Dual Channel Lights -
Won’t light unless both fail
button [overhead] - 1 x fail light
Loses it’s way
Update position - execute within 5 minutes
30 minutes on single battery
GSPAM
GPS - light flashing Didn't tell me / Lied to me / or abused me - White alignment light. Align - Steady - aligning or shutting down Flashing - alignment cannot be completed Lied to me, abused me, Didn't tell me
Fault - amber - fault detected
ON DC light -
power source switched to DC - switched hot battery bus.
Power from AC standby bus or AC transfer bus 2 was not normal.
horn from wheel well sounds to announce battery drain.
Momentary illumination during self test.
DC fail light
DC power to IRS not normal
IRS Mode selector
OFF
Alignment lost
all electrical power removed
Align
OFF to Align initiates alignment
Nav to Align updates alignment and zeros Ground Speed.
NAV (detected position)
enters Nav mode after the alignment of the cycle and entry of present position.
In NAV mode all IRS info available to airplane systems.
ATT
attitude and heading information only
attitude flag in view (attitude invalid) until align light extinguished.
heading flag in view( Heading invalid) until actual magnetic heading is manually enters after align light is extinguished.
Position and ground speed info not avail until the IRS is aligned on the ground.
Selector must be OFF before reselecting ALIGN or NAV.
Speed Trim -
PSEU
Auto Slats
Mach Trim
Service interphone with and dome light control
Exterior panels allow ground personnel to speed with cockpit.
OFF - External jacks deactivated
comm between FA’s still possible
ON - Add external jacks to inter phone system.
Dome Light -
One of the two lights on the captains side is connected to the hot battery bus.
Dome Light
Two Dome lights
One has two lights
One of them will always work off the hot battery bus.
Jack Box (Jumpseat audio panel
Left ALT
Switches Capt’s comms.
Can’t make PA
Right Alt
Switches FO comms to Alt sys.
V,B, R
Voice, Both, Range
Engine Panel
Reverser Light
10 Seconds fine
12 seconds -
1 not stowed - Light -
Auto re-stow circuitry triggered
Master Caution - Auto re-stow circuitry triggered
1) Isolation Valve thrust reverser control valve not in commanded position
2) 1 or more Thrust Reverser Sleeve not in commanded state.
3) Failure in sinc shaft lock circuitry
EECs
Electronic Engine Control
Channel A and B
- changes channels after every flight
- 76% thrust trigger
- Switch channels automatically with system failure
Light ON
Soft Alternate
Snap shot of current operating conditions
Check MEL for continued use after landing.
Don’t do anything
TOD
Throttles to Idle
Hard Alternate automatic
QRH
Put both in Hard Alt
Hot / Hung / Wet Start protections Hot - 725 / shut off at 670 Normal / Soft / and Hard N1 and N2 overspeed protection. Don't want to overspeed. Reduce power on each engine. push glass button put in Hard ALT
Operates in variety of conditions.
Hard - Settings in Hard ALT likely correlated to Thrust Lever position.
Normal - settings correlated to atmospheric conditions.
Soft - Snap shot of last functional engine setting
Crew Oxygen
AOM 16.1.1 Rules of thumb - 4 x pax 1000 psa 3 x pax 750 psi 2 x pax 650 psi
14,000 masks out
12 minutes
114 cu ft bottle
Light on
Move switch to ON
Forces any passenger oxygen masks that didn’t deploy
to drop.
Broadband control panel
1 - minute amber
ON auto at 10,000 ft.
OFF at 7,000
Flight Recorder
Test - False oil pressure
Engines off
will sense APU Pressure and record.
Mach Airspeed warning
Test - No 1 / No 2
won’t test
Kruger flaps not re-stowed
two actuators on each side
Less than 4 minutes since start.
Slats on B system
Stall Warning
Stick shaker on each control column
Vibrate both sides.
PSEU Light
Ground Light
Proximity switch Electronic Unit Monitors -Take off Config -Landing Config -Air/Ground sensing -Landing Gear -Door Lights
PSEU light on - fault in the PSEU 30 - Over-wing exit door probably didn't unlock In Flight - PSEU Light inhibited
Viewers - Gear Lights
If any set shows 3 green, likely safe to land
Flight Control panel
STBY RUD Switches
Flight control to off - Closed Flight Control shut off valve
Turned on Standby rudder shutoff valve
Disables low pressure light
Allows standby hydraulic pressure - starts coming on-line
- rudder
- thrust reverser
Master Caution - Flight Controls
standby rudder light on.
Shut off the - right - shuts off flight control shut off valve. deactivates aileron elevator elevator feel
Flight Control Panel Alternate Flaps (guarded switch)
Red guarded Switch
- Standby hydraulic pump - ON
- ARM Alternate Flap Exertion switch
- Close trailing edge flap bypass valve.
- Extend trailing edge flaps with electric motor,
In Arm
Down 1st press
- Leading edge devices are coming all the way out, extended, hydraulically.
Down 2nd press
- Press and hold to allow electric motor to extend flaps to 15. Note: the motor can extend flaps full, but QRH recommends 15 for go around possibility.
2 minutes to extend.
UP - Latched up.
B - System failure
Using stand by hydraulic for leading edge devices
and electric motor for flaps.
Flight Control Panel
Spoiler switches
Maintenance function
Flight Control Panel
Low quantity - Light
half full will illuminate
Flight Control Panel
Low pressure Light
on momentarily with stand by hydraulics on
hopefully goes off when it comes on-line
Flight Control Panel
SBY RUD ON - Light
Light On when A or B STBY RUD selected
Means Stand by hydraulic pump is on.
Flight Control Panel
Feel Dif pressure light
On with 25% difference in pressure.
Light will be on with one engine started.
A of B on 3000 lbs of pressure
pitot tubes on each side of vertical stabilizer
rips off, will get light
Flight Control Panel
SPEED TRIM FAIL - light
Two lists
- Low gross weight
- high power
- aft CG
- Autopilot not on.
Speed trim tries to return aircraft to normal state.
turn at 4K’ no autopilot - speed trim activates
Speed Trim ARM list 2 -100 to .60 fade to zero at .68 Mach -10 seconds after take off -5 seconds after last trim input -autopilot off - sensing trim input needed
Flight Control Panel
MACH TRIM FAIl - Light
Speed increases
Center of lift moves aft
Nose heavy
- Prevent mach tuck
- light on is the only way you know its not working
.615
QRH - speed limit.
Flight Control Panel
AUTO SLAT FAIL - Light
Stall protection feature.
1,2,5 - extend / intermediate position - slats extend
auto slats come out automatically - pre-stall to keep plan from stalling
Stall protection -Speed Trim -Auto Slats -SMYD - Stall management yaw damper - Limits rudder to smaller control inputs to reduce likelihood of rolling. -Elevator feel shift Twice as hard to pull back vs pushing forward -Stall warning -Stick shaker
Don’t stall swept wing airplane
System B
Lose B
PTU - A system pressure through motor pump to extend slats for System B
PTU transfers Power from A to B system
crisis over - slats return
Landing Gear Transfer Unit
Transfers powers and fluid from B to A system
B Pressure and quantity transfers to A to retract and extend landing gear.
If we lose A, B pressure and quantity will get the gear up.
VHF Nav, GPS, FMC switches
Selecting 1 or 2 will command all DU’s CA and FO to operate from selected switch.
One DU can run all DU’s
DU2 example - Hydraulic pressure showing nothing. Switch
amber - CDS fault - One DU has fault.
On 2 - if blank
everything goes on 1.
Fuel
Center tanks 28.8
Wing tanks 8600
46,000 lbs
800
35,000 lbs
10,900 lbs wings
800
- 6 drip sticks on each wing tank
- 4 drip sticks on each center tank
Classic
- 5 drip sticks on each wing.
- None on center
Spar Valve
Hot battery Bus
Engine Valve
Battery Bus
Fuel Temp
#1 tank sensor Limitation: -49 -37 more than 1000 lbs in center tank. Mains must be full Weight and Balance
Must have 2000 lbs to turn on center tank pumps
If both fuel pump low pressure lights come on, must turn center tank pumps off.
Southwest policy - One off, = Both Off.
Climbing or descending - turn on off
Scavenge Pump off - transfer slow rate / loaded flow
Center tank low pressure light. Pump off
scavenge pump continues pumping.
Center tanks pumps on -
Must monitor lights
total electric failure
fuel tanks - all have electric pumps
suction feed not guaranteed above 30K”
Don’t pull throttles to idle it will break suction and have duel engine failure
Two pumps off in One Tank - Master Caution.
Filter Bypass Light
Impending bypass - may have already bypassed.
if light 2 comes on.
Contaminated fuel, land immediately.
Limitation on fuel balance
1000 lbs
Fuel limit
Config
amber
1600 lbs center tank - no pressure - light will be on
Turn on center tank pump light extinguishes
One engine running
800 lbs quit telling you anything
2000 lbs - low fuel light
1675 lbs - low fuel - heat exchangers coolant or hydraulic
Can you Fuel the aircraft with No battery
Yes, open fuel panel, Manual fueling
elongated button, 50 lbs of pressure, fuel it by the stick.
Hot battery Bus
fire extinguishing capability
compass light
IRU’s
APU starter
ON -
- Hot Battery Bus
- Battery Bus
- Switched Hot battery Bus
- AC Standby Bus
- DC standby Bus
30 minutes
Total failure - Write down when it happens.
Standby-by power
Battery Discharge Light
In flight - very concerned
TR unit
Have to check individual TR’s
Remote control - watch channel you want to watch.
Ground Light - DC or standby power
Battery
ON or OFF
Galley Power
On or OFF
Load Shed - Galley Shed
Standby power OFF
- AC standby Bus off
- DC standby Bus off
- Battery Bus OFF
2 and 3 or 1 of 3 is OFF
load shed
What makes it come on?
no pressure on transmission
IDG’s light why? red guarded switches
Cannot reconnect in flight if red guarded switch is clicked off
- Overheat
- pressure fell - light comes on
- drive torn up.
temp gauge -
stand by power in (AUTO) / Manual / ON
Auto
DC bus 1 or AC transfer Bus Fail
auto standby bus
manually disconnected
AC Standby bus / DC standby bus.
light on
On
Manually put into standby
30 minutes of power.
Ground Power
Ground power of good quality available.
Fuel Control Panel
Engine Valve Spare Valve Fuel Temp indicator Crossfeed Valve Open Light (blue) Filter bypass Lights (amber) Crossfeed selector Fuel Pump switches Main Tank Fuel PUMP LOW PRESSURE Lights Center Tank Fuel Pump Low pressure Lights
Engine Valve (light) Closed (ENG VALVE CLOSED) & SPAR VALVE CLOSED
Blue - extinguished - related engine or spar fuel shutoff valve is open.
Bright - Related engine or spar fuel shutoff valve in transit, or valve position and engine start lever or engine fire switch disagree.
Dim - related engine or spar fuel shutoff valve is closed.
Fuel Temp Indicator
Indicates temp in tank #1
Crossfeed Valve Open Light (blue)
Extinguished - Crossfeed valve is closed
- bright - Crossfeed valve is in transit, or valve position &is selector disagree
- dim - Crossfeed valve is open
Filter Bypass Light (amber)
Extinguished - fuel filter operating normally
Illuminated - impending fuel filter bypass due to contaminated filter
Crossfeed Selector
Crotrols fuel Crossfeed valve
Closed - isolates engine No1 and No2 fuel feed lines
Open - connects engine No1 and No2 fuel feed lines
Fuel Pump switches
ON - Activates fuel pump
OFF - deactivates fuel pump
Main Tank Fuel Pump Low Pressure Lights (amber)
Illuminated - fuel pump output pressure is low, or fuel pump switch is OFF
Note: two LOW PRESSURE lights illuminated in same tank illuminate Master Caution and FUEL system annunciation lights.
One LOW PRESSURE light causes MASTER CAUTION and FUEL system annunciator lights to illuminate MASTER CAUTION light recall.
Extinguished - fuel pump output pressure is normal.
Source off (light)
APU - ON
power available, it’s just not on the BUS.
Transfer Bus OFF - light
Means exactly what it says.
Transfer BUS AUTO (2 functions)
AC and DC function
AC - BUS tie breakers that will automatically pick up AC power if the other side of the BUS tie goes dead.
AC Bus 1
AC Bus 2
DC - Cross bus tie relay, when you intercept the glide slope, the relay separates the systems to ensure an ILS can be accomplished if there is a single electric failure. If it failed on the glide slope, a single electrical failure would make you inoperative.
OFF - Disables the AC and DC busses.
APU’s
Can start APU at 41,000 Limitations 41,000 Bleed - 17,000 Bleed and Electric - 10,000
Available immediately
book says 1 minute
Southwest policy - 2 minutes.
Maint Light (APU)
Probably Oil Could be other things Oil pressure 760 start 710 continuous
Fail safe APU - Automatic On-Line
If all power coming from APU and zero power coming from IDG’s
If power cut from the APU - Computer assumes that is not a desired electrical state.
APU shut down Auto
Limitations Oil pressure fault overspeed fire
Flight Control Limitations
ALTERNATE FLAPS selector switch
- No Speed brake below 1,000’
- Don’t pull speed brake past flight detent
- No speed brake and flaps at the same time
Alternate flaps selector switch
- Alt Flaps - 0 to 15 then 15 to 0, then wait (5) minutes.
- Changing directions - wait 15 seconds
- 2 minutes to reach Flaps 15
215 amps max load ground
wait 30 seconds after turning IRU’s off to turn AC power off. IRU’s are going through shutdown sequence.
Equipment Cooling
Horn - interrupted on the ground
ALTN with in 5 seconds.
Supply fan and exhaust fan
Emergency Exit Lights
Trigger
- DC BUS fails
- AC power removed
How long on? As long as the battery pack lasts
No Smoking switch
ON when in the aircraft
Auto seat belts
AUTO - OFF when landing gear and flaps are up.
AUTO - ON - Flaps out, or landing gear down which ever is first
Engine Start Switch
1 AC Transfer Bus igniter
Always start right side
Two igniters
AC standby igniter
Anti-ice systems - Window Heat panel - Overheat lights
OVHT Test
Power Test - All lights should come on
Limits
1 L, 2L, 3L, 1R, 2R, 3R,
3rd window not heated
Flight Controls Panel
Force Fight Monitor
2 x Auto
3 x Manual
Manually:
- A - Flight control switch to Standby Rudder
- B - Flight control switch to Standby Rudder
- Alternate Flaps ARM
Automatically
1. Loss of system A or B, Flaps extended, airborne or wheel speed - 60kts,
2. Force Fight Monitor - Trip
a - Jammer disconnect - standby system kick non working system out, and works with good one.
b. Opposition - kicks both non working systems out and works alone.
Anti- ice system - Pitot Heat
Bleeds Wing Cowls Heated windows Windshield wipers
Fuel panel - Center Tank FUEL PUMP LOW PRESSURE lights (amber)
Illuminated - fuel pump output pressure is low and FUEL PUMP switch is ON
Note:
Anti-Ice Rain
Overheat
- OVERHEAT - Amber - overheat condition is detected
Note: OVERHEAT lights illuminate if electrical power is interrupted.
2. Window Heat ON LIGHTS Illuminated Green - Window heat is being applied to selected windows. Extinguished when: - Switch is OFF -Overheat is detected -system failure has occurred -system is at the correct temp
- Window Heat Switches
ON - Window heat is applied to selected windows
OFF - Windows heat is not in use. - Window heat Test Switch (spring loaded to neutral)
OVHT Test - bypasses thermostat, turns all overheat lights on
Simulates overheat condition
PWR Test - Provides a confidence test
FO
SIDE: ON - OFF
FWD: ON - OFF
Temperature controller maintains window No1 and No 2 to ensure Maximum strength of windows in the event of a bird strike.
Anti-Ice and Rain
Windshield / Foot Air Controls
- FOOT AIR Controls
Pull - supplies conditioner air to Pilots leg positions - WINDSHIELD AIR Controls
Pull - Supplies conditioned air to No.1 windows for defogging
Anti-Ice and Rain - Windshield Wiper Panel
- WINDSHIELD WIPER Selector
PARK - Turns off wiper motors and stows wiper blades
INT - Seven second intermittent operation
LOW - Low speed operation
HIGH - High speed operation
Permanent rain repellent coating on windows.
Don’t turn on dry windows will scratch
Anti-Ice - Probe Heat Panel
- Probe Heat Lights - Amber - Related probe not heated
Note: if operating on standby power, probe heat lights do not indicate system status - Probe Heat Switches
ON - Power is supplied to heat related systems
AUTO - Power is automatically supplied to A and B probers heat systems when either engine is running - TAT TEST Switch
Push - Electrical Power applied to the TEMP PROBE on the ground.
Pitot probe for standby airspeed is NOT heated when on standby power.
No indication on panel with standby power - Capt airspeed at zero - probably not working.
Anti-ice and rain -
Engine Anti-Ice Panel
- COWL Anti-Ice Lights
Amber - Overpressure condition in duct downstream of engine cowl anti-ice valve. - COWL VALVE OPEN Lights
Blue
Bright - related anti-ice valve in transit or anti-ice valve position disagrees with related switch position.
Dim - related cowl anti-ice valve is open
Extinguished - related anti-ice valve is closed - ENGINE ANTI-ICE Switches
ON -
- related cowl anti-ice valve is open
- Stick shaker logic is set for icing conditions
- FMC Vref is not adjusted automatically
- Green TAI indication show on the engine display
OFF
- related cowl anti-ice valve is commanded closed
- stick shaker logic returns to normal if wing anti-ice has not been used in flight
- Green TAI indication on the engine display extinguishes
Amber lights on COWL ANTI-ICE due to excess pressure in the duct leading from cowl anti-ice valve to the cowl lip
Cowl electrically controlled and pressure actuated.
Engine spooled up to Approach Idle.
Anti-Ice and Rain
Thermal Anti-Ice Indication
Thermal Anti-Ice Indications (TAI)
Green - Cowl anti-ice valves open
Amber - Cowl anti-ice vale is not in position indicated by related engine anti-ice switch.
Anti-Ice and Rain
-Wing Anti-Ice Panel
- Wing Anti-Ice valve open lights
Bright - Related wing ai valve in transit or disagrees
Dim - wing ai valve open
Extinguished - wing ai valve closed - Wing Anti-Ice Switch
OFF - Wing anti-ice control valves are closed.
ON - (in the air) Wing ai valves open
Stick shaker logic set for icing. - after turned on - logic remains even if turned off.
ON - (On the ground)
- Wing ai valve open if both thrust levers are BELOW takeoff warning setting and temp inside both distribution ducts is below thermal switch activation temp.
- Control valve closes if forward thrust lever ABOVE takeoff warning setting or thermal switch is activated in either distribution duct. Switch remains ON
- Switch trip OFF at lift off.
Anti - Ice
Overall description
- Flight deck window Heat
- Windshield wipers
- Probe and sensor heat
- Engine Anti-ice system
- Wing Anti-ice system
Engine Control Panel (Reverser Light)
Reverser Lights (ATIS)
- Auto Re-stow circuit has been activated
- One or more Thrust Reverser is not in commanded position
- Isolation valve or Thrust control valve not in commanded position
- A failure is detected in the synchronization shaft lock circuitry
Engine Control Lights
- AIrcraft not dispatch-able
- Inhibited in the air
- Not inhibited on the ground when:
- Engine is operating
- below 80 kts
- Approximately 30 seconds after touchdown.
Cockpit panel and Systems
EEC Switch-lights
ON - white light:
-Normal EEC mode is selected
- Engine ratings calculated using sensed conditions
ON (Extinguished) - EEC manually selected to hard alternate
ALTN (amber light)
- EEC auto or manually been switched to Alternate mode
ON and ALTN together
- EEC auto switched to Soft Alternate mode
Oxygen System Panel
Two systems
One for flight deck crew
One for passengers
Portable oxygen cylinders forward and aft in the cabin for emergency use.
Oxygen System - Types of masks / limitations in cockpit / cabin
-3 types of masks
- Diluter demand masks and regulators with separate smoke goggles (some 700W)
- Full face mask with adjustable regulator, for normal, 100%, and emergency oxygen (some 700W)
- Automatic pressure breathing mask and regulator (800W)
Pressure breathing above 27,000
Oxygen for crew - single bottle
System 1850 psi
- 4 x pax 1000 psi
- 3 x pax 737 psi
- 2 x pax 600 psi
Passenger oxygen -
-oxygen generators at each service unit, distributed through 4 continuous flow masks at each psu.
- Each Lavatory has 2 continuous flow mask and oxygen generator
Oxygen System - Gauge, switch, light
Gauge - shows bottle pressure
AOM 16.1.2 for required oxygen pressure
Gauge is electrically powered, BAT Bus with battery switch on.
Passenger oxygen system -
- Normal guarded position -
- 14,000 ft cabin altitude auto deploy
- ON - manual activation to electronically drop masks
PASS OXY ON light
- Illuminates if activated automatically or manually.
LE Device Panel - Transit Lights
Orange Transit Lights - Any LE device is in transit
LE Device Panel - Extend Lights -
Related LE slats in intermediate position
