Panels Flashcards
AUTO-BRAKE DISARM
What does it mean? Illumianted (8)
Extinguished
• SPEED BRAKE lever moved to down detent during RTO or
landing
- manual brakes applied during RTO or landing
- thrust lever(s) advanced during RTO or landing
- except during first 3 seconds after touchdown for landing
- landing made with RTO selected
- RTO mode selected on ground
- illuminates for one to two seconds then extinguishes
- a malfunction exists in automatic braking system.
Extinguished –
- AUTO BRAKE select switch set to OFF
- autobrake armed.
ANTI-SKID INOP
What does it mean? Illuminated
Extinguished
System fault detected by antiskid monitoring system.
Extinguished – antiskid system operating normally.
BRAKE TEMP
What does it mean?
Brake temp has been exceeded (past 6?)
(amber) Illuminated
What does it mean?
- dual channel failure, light illuminates
- single channel failure, light illuminates with RECALL pressed
ALIGN Light
Illuminated (white) –
What does a STEADY light indicate?
What does a FLASHING light indicate?
What does an EXTINGUISHED light indicate?
STEADY – the related IRS is aligning or shutdown cycle
Flashing – alignment cannot be completed:
- aircraft movement
- significant difference between previous and
entered positions or an unreasonable present position entry
• no present position entry.
Extinguished -
IRS not in ALIGN mode
With mode selector in NAV, alignment is complete and all IRRS information is available.
With mode selector in ATT, attitude information is availble. Heading information is available following entry of magnetic heading.
Engine Panel
What do the REVERSER Lights Indicate? (4)
Illuminated (amber) – one or more of following has occurred:
• isolation valve or thrust reverser control valve is not in commanded
position
- one or more thrust reverser sleeves are not in commanded state
- auto–restow circuit has been activated
- a failure has been detected in synchronization shaft lock circuitry.
Engine Panel
Engine Control Lights
What does the amber illuminated light mean?
When do the lights operate?
Illuminated (amber) –
Engine control system is not dispatchable
due to faults in system.
Light operates when:
- engine is operating and,
- airplane on ground and:
- below 80 kt prior to takeoff or,
- approximately 30 seconds after touchdown.
Engine Panel
Electronic Engine Control (EEC) Lights
What does the ON light indicate?
When is the ON light not in view?
What does it mean when ALTN is in view?
When will you see ON and ALTN at the same time?
What must be observed if operating both?
ON – in view (white)
- indicates normal control mode is selected
- Engine ratingscalculated by EEC froms**ensed atmospheric
conditions and bleed air demand
• when ON is not in view, the EEC has been manually selected to the
alternate mode.
ALTN – in view (amber)
• indicated EEC has automatically switched to alternate control mode
or it has been selected manually
• EEC provides rated thrust or higher.
Note: Both ON and ALTN may be in view if EEC has automatically
switched to soft alternate mode.
Note: EGT limits must be observed in both
IRS - FAULT LIGHT
What’s it mean?
Illuminated (amber) – a system fault of the related IRS ATT and/or NAV modes have been detected.
OFF
ALIGN
NAV
ATT
OFF –
- alignment is lost
- all electrical power is removed from the system
after a 30 second shutdown cycle.
ALIGN –
- rotating the selector from OFF to ALIGN initiates the alignment cycle
- rotating the selector from NAV to ALIGN automatically updates
alignment and zeroes ground speed error.
NAV (detented position) –
• system enters the NAV mode after the alignment cycle and entry of
present position
• in NAV mode, all IRS information is available to airplane systems
ATT –
- Provides only attitude and heading information:
- Attitude information is invalid (attitude flag in view) until ALIGN light is
extinguished.
• Heading information is invalid (heading flags in view) until the actual
magnetic heading is manually entered after the ALIGN light is extinguished.
• Position and ground speed information is not available until the IRS is
aligned on the ground.
• The selector must be cycled to OFF before reselecting ALIGN or NAV
ON DC Light
What does it mean?
If you’re on the ground and get this light what do you hear, and what does it mean?
Why do you see it flash momentarily?
• the related IRS is operating on DC power from
the switched hot battery bus (AC power not normal)
• (ground) call horn in the nose wheel well sounds to
indicate a battery drain exists
• momentary illumination is normal during alignment self–test.
DC Fail
DC power for the related IRS is not normal
If other lights are extinguished the, the IRS is operating normally on AC Power
STANDBY POWER Switch
AUTO (guarded position) –
With AC Busses Powered
Without AC Power
OFF (center position) –
AUTO (guarded position) –
● In flight, or on the ground, and AC transfer busses powered:
– AC standby bus is powered by AC transfer bus 1
– DC standby bus is powered by TR1, TR2, and TR3
● In flight, or on the ground, loss of all AC power:
– AC standby bus is powered by battery through static inverter
– DC standby bus is powered by battery
– Battery bus is powered by battery
OFF (center position) –
● STANDBY PWR OFF light illuminates.
● AC standby bus, static inverter, and DC standby bus are not powered.
BAT (unguarded position) –
● AC standby bus is powered by battery through static inverter.
● DC standby bus and battery bus are powered directly by battery.
Standby Power Off (STANDBY PWR OFF) Light
One or more of the following busses are unpowered:
● AC standby bus
● DC standby bus
● Battery bus
Generator Drive (DRIVE) Lights
Integrated drive generator (IDG) low oil pressure caused by one of the
following: (4)
Generator Drive Disconnect (DISCONNECT) Switches (guarded)
Generator Drive (DRIVE) Lights
Integrated drive generator (IDG) low oil pressure caused by one of the
following:
● IDG failure
● Engine shutdown
● IDG automatic disconnect due to high oil temperature
● IDG disconnected through generator drive DISCONNECT switch
Generator Drive Disconnect (DISCONNECT) Switches (guarded)
Disconnects IDG if electrical power is available and engine start lever is in IDLE.
IDG cannot be reconnected in the air.
WINDOW HEAT PANEL
Window OVERHEAT Lights
Window Heat ON Lights
- Illuminated
- Extinguished
WINDOW HEAT Switches
- ON
- OFF
Probe Heat Lights
WINDOW HEAT Test Switch
- OVHT
- PWR TEST
WINDOW HEAT PANEL
Window OVERHEAT Lights
Illuminated : overheat condition is detected.
Note: OVERHEAT lights also illuminate if electrical power to window(s) is
interrupted.
Window Heat ON Lights
Illuminated– window heat is being applied to selected window(s).
Extinguished –
● Switch is OFF, or
● An overheat is detected, or
● A system failure has occurred
● System is at correct temperature
WINDOW HEAT Switches
ON – window heat is applied to selected window(s).
OFF – window heat not in use.
Probe Heat Lights
Illuminated (amber) – related probe not heated.
Note: If operating on standby power, probe heat lights do not indicate system
status
WINDOW HEAT Test Switch
OVHT – simulates an overheat condition.
PWR TEST – provides a confidence test.
COWL ANTI-ICE Lights
COWL VALVE OPEN Lights (blue)
Bright
Dim
ENGINE ANTI-ICE Switches
ON
OFF
Wing Anti-ice VALVE OPEN Lights (blue)
ON
OFF
WING ANTI-ICE Switch
OFF
ON (AIR)
ON (GROUND)
COWL ANTI-ICE Lights
indicates an overpressure condition in duct downstream of
engine cowl anti-ice valve.
COWL VALVE OPEN Lights (blue)
● Bright – related cowl anti-ice valve is in transit or cowl anti-ice
valve position disagrees with related ENGINE ANTI-ICE switch
position.
● Dim – related cowl anti-ice valve is open (switch ON).
Extinguished – related cowl anti-ice valve is closed (switch OFF).
ENGINE ANTI-ICE Switches
ON –
● Related engine anti-ice valve is open.
● Stick shaker logic is set for icing conditions.
OFF –
● Related engine anti-ice valve is commanded closed.
● Stick shaker logic returns to normal if wing anti-ice has not
been used in flight.
Wing Anti-ice VALVE OPEN Lights (blue)
● Bright – related wing anti-ice control valve is in transit, or
related wing anti-ice control valve position disagrees with WING
ANTI-ICE switch position.
● Dim – related wing anti-ice control valve is open (switch ON).
Extinguished – related wing anti-ice control valve is closed
(switch OFF).
WING ANTI-ICE Switch
OFF – wing anti-ice control valves are closed.
ON (in the air) –
● Wing anti-ice control valves are open.
● Stick shaker logic is set for icing conditions.
Note: Stick shaker logic remains set for remainder of the flight.
ON (on the ground) –
● Wing anti-ice control valves open if thrust on both engines is below takeoff
warning setting and temperature inside both distribution ducts is below
thermal switch activation temperature.
● Control valves close if either thrust is above takeoff warning setting or
thermal switch is activated in either distribution duct. Switch remains ON.
● Switch trips OFF at lift-off.
Air Conditioning PACK Switch
OFF
AUTO
HIGH
TRIP RESET Switch
Air Conditioning PACK Switch
OFF – pack signaled OFF.
AUTO –
● With both packs operating, each pack regulates to low flow.
● With one pack operating, operating pack regulates to high flow in flight with flaps up.
● When operating one pack from APU (both engine BLEED air switches OFF),
regulates to high flow.
HIGH –
● Pack regulates to high flow
● Provides maximum flow rate on ground with APU BLEED air switch ON
TRIP RESET Switch
Push (if fault condition is corrected) –
● Resets BLEED TRIP OFF, PACK TRIP OFF, and DUCT OVERHEAT lights.
● Related engine bleed air valve opens, related pack valve opens, or
related trim air modulating valve opens.
● Lights remain illuminated until reset.
DUAL BLEED Light
RAM DOOR FULL OPEN Light
BLEED TRIP OFF Light
PACK TRIP OFF Light
WING-BODY OVERHEAT Light
Left
Right
DUAL BLEED Light
● Illuminates whenever the APU bleed air valve is open and the position of the
engine bleed air switches and isolation valve would permit possible
backpressure of the APU.
● Limit thrust to idle with when light illuminated
RAM DOOR FULL OPEN Light
Illuminated (blue) – indicates ram door in full open position.
BLEED TRIP OFF Light
Illuminated – excessive engine bleed air temperature or pressure
● Related engine bleed air valve closes automatically.
● Requires reset.
PACK TRIP OFF Light
Illuminated (amber) –
● Indicates pack temperature has exceeded limits.
● Related pack valve automatically closes and mix valves drive full cold.
● Requires reset.
WING-BODY OVERHEAT Light
● Left light indicates overheat from bleed air duct leak in left engine
strut, inboard wing leading edge, air conditioning bay, keel beam, or
APU bleed air duct.
● Right light indicates overheat from bleed air duct leak in right engine
strut, inboard wing leading edge, or air conditioning bay.
ZONE TEMP
CONT CAB ZONE TEMP LIGHT
When will you get a zone temp light to illuminate?
AFT/FORWARD ZONE TEMP
When will you get a zone temp light to illuminate?
If any failure affecting the supply of trim air exists what will happen ?
If all temperature selectors are positioned OFF, the pack controls will cause the left pack to maintain a fixed temperature of ____ adn the right pack to maintain ___ as measured at the pack temperature sensor.
Failure of primary flight deck temperature control (CONT CAB) will cause automatic swtich backup and illuminate the zone temp on master caution recall.
Failure of both primary and secondary controls will illuminate lights automatically.
–
When there is an overheat of the assocaited AFT/FWD CAB.
Will cause associated trim air modulating valve to close.
Will illuminate on recall.
–
the temperature control system will control both packs independently
–
If all temperature selectors are positioned OFF, the pack controls will cause the left pack to maintain a fixed temperature of 75°F / 24° C adn the right pack to maintain 65°F /18°C as measured at the pack temperature sensor.
Outflow VALVE Position Indicator
Outflow Valve Switch (spring–loaded to center)
Pressurization Mode Selector
Outflow VALVE Position Indicator
Outflow Valve Switch (spring–loaded to center)
Pressurization Mode Selector
Outflow VALVE Position Indicator
- indicates position of outflow valve
- operates in all modes
Outflow Valve Switch (spring–loaded to center)
CLOSE – closes outflow valve electrically with pressurization mode selector in
MAN position
OPEN – opens outflow valve electrically with pressurization mode selector in
MAN position
Pressurization Mode Selector
AUTO – pressurization system controlled automatically.
ALTN – pressurization system controlled automatically using ALTN controller
MAN –pressurization system controlled manually by outflow valve switch
• both auto controllers bypassed
AUTO FAIL Light (amber)
OFF Schedule (SCHED) DESCENT Light
Alternate (ALTN) Light
MANUAL Light
AUTO FAIL Light (amber)
automatic pressurization system failure detected:
- Indicates a single controller failure when ALTN light is also illuminated
- Indicates a dual controller failure when illuminated alone
OFF Schedule (SCHED) DESCENT Light
aircraft descended before reaching cruise altitude set in FLT ALT indicator
Alternate (ALTN) Light
Pressurization system operating in the alternate automatic mode:
• Illumination of both ALTN and AUTO FAIL lights indicates a single
controller failure and automatic transfer to ALTN mode
• pressurization mode selector in ALTN position
MANUAL Light
Electric Hydraulic Pump OVERHEAT Lights (amber)
Hydraulic Pump LOW PRESSURE Lights (amber)
ENGINE HYDRAULIC PUMPS Switches
ON
OFF
ELECTRIC HYDRAULIC PUMPS Switches
ON
OFF
Electric Hydraulic Pump OVERHEAT Lights (amber) –
Hydraulic fluid used to cool and lubricate the corresponding
electric motor driven pump has overheated or the pump itself
has overheated.
Hydraulic Pump LOW PRESSURE Lights (amber) –
Output pressure of associated pump is low.
Note: When an engine fire switch is pulled, the low pressure
light is deactivated.
ENGINE HYDRAULIC PUMPS Switches
ON – de-energizes blocking valve in pump to allow pump
pressure to enter system.
Note: Should remain ON at shutdown to prolong solenoid life.
OFF – energizes blocking valve to block pump output.
ELECTRIC HYDRAULIC PUMPS Switches
ON – provides power to associated electric motor-driven pump.
OFF – electrical power removed from pump.
BAT DISCHARGE
TR UNIT
On The Ground
In Flight
ELEC
BAT DISCHARGE
• BAT switch ON & excessive battery discharge detected.
TR UNIT
On the ground – any TR has failed.
In flight –
- TR1 failed; or
- TR2 and TR3 failed.
ELEC
• a fault exists in DC power system or standby power
TRANSFER BUS OFF Lights
SOURCE OFF Lights
Generator Off Bus (GEN OFF BUS) Lights
APU Generator Off Bus (GEN OFF BUS)
TRANSFER BUS OFF Lights
Related transfer bus is not powered.
SOURCE OFF Lights
No source has been manually selected to power the related transfer bus, or
the manually selected source has been disconnected
• if a source has been selected to power the opposite transfer bus, both
transfer busses are powered.
Generator Off Bus (GEN OFF BUS) Lights
IDG is not supplying power to the related transfer bus.
APU Generator Off Bus (GEN OFF BUS)
APU is running and not powering a bus.
Ground Power Available (GRD POWER AVAILABLE) Light
Ground Power (GRD PWR) Switch
How many position Swtich?
OFF
ON
Ground Power Available (GRD POWER AVAILABLE) Light
Ground power is connected and meets airplane power quality standards
Ground Power (GRD PWR) Switch
Three position switch, spring–loaded to neutral
OFF – disconnects ground power from AC transfer busses.
ON – if momentarily moved to ON position and ground power is available:
- removes previously connected power from AC transfer busses
- connects ground power to AC transfer busses if power quality is correct.
Automatic Slat Failure (AUTO SLAT FAIL)
- indicates failure of the auto slat system
- indicates failure of a single Stall Management/Yaw Damper
(SMYD) computer when illuminated during MASTER CAUTION
recall and extinguishes when master caution system is reset.
Flight Control LOW PRESSURE Lights
What does it indicate?
When is it deactivated?
• indicates low hydraulic system (A or B) pressure to ailerons, elevator and
rudder
• deactivated when associated FLIGHT CONTROL switch is positioned to STBY
RUD and standby rudder shutoff valve opens.
STANDBY HYD Lights
STANDBY HYDRAULIC LOW QUANTITY
STANDBY HYDRAULIC LOW PRESSURE
STBY RUD ON
STANDBY HYDRAULIC LOW QUANTITY (amber) -
- indicates low quantity in standby hydraulic reservoir
- always armed.
STANDBY HYDRAULIC LOW PRESSURE (amber) -
- indicates output pressure of standby pump is low
- armed only when standby pump operation has been selected or
automatic standby function is activated.
STBY RUD ON (amber) –
indicates the standby rudder system is
commanded on to pressurize the standby rudder power control unit.
Mach Trim Failure (MACH TRIM FAIL)
- indicates failure of the mach trim system
- indicates failure of a single FCC channel when MASTER
CAUTION light recall is activated and light extinguishes when
master caution system is reset.
Speed Trim Failure (SPEED TRIM FAIL) Light
- Indicates failure of the speed trim system
- Indicates failure of a single FCC channel when MASTER
CAUTION light recall is activated and light extinguishes when
Master Caution System is reset.
FLIGHT CONTROL Switches
STBY RUD
OFF
ON
STBY RUD - activates standby hydraulic system pump and opens standby rudder
shutoff valve to pressurize standby rudder power control unit.
OFF - closes flight control shutoff valve isolating ailerons, elevators and rudder
from associated hydraulic system pressure.
ON (guarded position) - normal operating position.
Feel Differential Pressure (FEEL DIFF PRESS)
Armed when the TE flaps are up or down & indicates excessive differential
pressure in the elevator feel computer.
ALTERNATE FLAPS Position Switch
What needs to be done first in order for it to function?
UP
OFF
DOWN
Functions only when the ALTERNATE FLAPS master switch is in ARM.
UP –
- electrically retracts TE flaps
- LE devices cannot be retracted by the alternate flaps system.
OFF – normal operating position.
DOWN (spring loaded to OFF) –
• (momentary) fully extends LE devices using standby
ALTERNATE FLAPS Master Switch
OFF
ARM
OFF (guarded position) – normal operating position.
ARM – closes TE flap bypass valve, activates standby pump, & arms the
ALTERNATE FLAPS position switch.
Main Tank FUEL PUMP LOW PRESSURE Lights (amber)
Illuminated
Extinguished
Center Tank FUEL PUMP LOW PRESSURE Lights
Illuminated
Extinguished
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 annunciator lights. One LOW PRESSURE light
causes MASTER CAUTION and FUEL system annunciator lights to illuminate on
MASTER CAUTION light recall.
• Extinguished – fuel pump output pressure is normal.
Center Tank FUEL PUMP LOW PRESSURE Lights
• Illuminated – fuel pump output pressure is low and FUEL PUMP switch is
ON.
Note: With both Center (CTR) tank FUEL PUMP switches ON, illumination
of both LOW PRESSURE lights illuminate MASTERCAUTION and FUEL system
annunciator lights. Illumination of one LOW PRESSURE light illuminates
MASTER CAUTION and FUEL system annunciator lights on MASTER
CAUTION light recall.
Note: With one CTR tank FUEL PUMP switch OFF, illumination of opposite
CTR tank LOW PRESSURE light illuminates the MASTER CAUTION and FUEL
system annunciator lights.
• Extinguished – fuel pump output pressure is normal, or FUEL PUMP
switch is OFF.
FILTER BYPASS Lights (amber)
CROSSFEED Selector
FUEL PUMP Switches
FILTER BYPASS Lights (amber)
Extinguished – fuel filter operating normally.
Illuminated – impending fuel filter bypass due to a contaminated filter.
CROSSFEED Selector
Controls fuel crossfeed valve.
- Closed – isolates engine No. 1 and No. 2 fuel feed lines.
- Open – connects engine No. 1 and No. 2 fuel feed lines.
FUEL PUMP Switches
- ON – activates fuel pump.
- OFF – deactivates fuel pump.
Engine Valve Closed (ENG VALVE CLOSED) & SPAR VALVE CLOSED Lights
Extinguished
Bright
Dim
FUEL Temperature (TEMP) Indicator
Crossfeed VALVE OPEN Light (blue)
Extinguished
Bright
Dim
Extinguished – related engine or spar fuel shutoff valve is open.
• bright – related engine or spar fuel shutoff valve is 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 Temperature (TEMP) Indicator
• Indicates fuel temperature in No. 1 tank.
Crossfeed VALVE OPEN Light (blue)
Extinguished – crossfeed valve is closed.
- bright – crossfeed valve is in transit, or valve position & selector disagree.
- dim – crossfeed valve is open.
What does this mean when it’s iilluminated?
Autopilot not trimming stabilizer properly.
Operates only when autopilot is engaged.
Light will remain extinguished with autopilot not engaged.
SPEED BRAKE ARMED
Deactivated -
GREEN -
SPEED BRAKE DO NOT ARM Light
SPEED BRAKE ARMED
Deactivated - when speed brake lever is in DOWN position.
GREEN - indicates valid automatic speed brake system inputs
SPEED BRAKE DO NOT ARM Light
Light deactivated when speed brake lever is in DOWN position.
FLAP LOAD RELIEF
When does this illuminate?
Flaps Slat Electronic Unit (FSEU ) provides TE flap load relief.
- *If flaps are set at 40:**
- flaps retract to 30 due to excess airspeed OR
If flaps are set at 30:
-flasp retract to 25 due to excess airspeed.
1.
2.
3.
4.
5.
6.
7.
8.
9.
YAW DAMPER Light & YAW DAMPER Switch
OFF
disengages yaw damper.
ON
• engages main yaw damper to main rudder power control unit if the B FLT
CONTROL switch is in the ON position
• engages standby yaw damper to standby rudder power control unit if both
the A and B FLT CONTROL switches are in the STBY RUD position.
Start Valve Open
Steady? Blinking?
Low Oil Pressure
Steady? Blinking?
Oil Filter Bypass Alert
Steady? Blinking?
When is blinking inhibited?
Start Valve Open
Steady - respective engine start valve open and air is supplied to starter
Blinking - uncommanded operning of start valve. ALL THREE BOXES BLINNK FOR TEN SECONDS THEN ALERT REMAINS ON STEADY
Low Oil Pressure
Steady - oil pressure at or below red line
Blinking - Low oil pressure.
Oil Filter Bypass Alert
Steady - indicates impending bypass of scavenge filter
Blinking - with an impending bypass.
Blinking is inhibited:
- during takeoff from 80 knots to 400 ft. RA, or 30 seconds after reaching 80knots which ever comes first.
- during landing below 200 RA until 30 seconds after touchdown.
- during periods when blinking is inhibited alterts illuminate steady.
1.
2.
3.
4.
5.
6.
7.
Stabilizer Trim (STAB TRIM) Main Electric Cutout Switch (Not Shown)
NORM -
OVERRIDE -
LOCK FAIL Light (amber) –
Auto Unlock (AUTO UNLK) Light (amber) –
Flight Deck Door (FLT DK DOOR) Lock Selector
UNLKD - AUTO - OFF
Stabilizer Trim (STAB TRIM) Main Electric Cutout Switch
NORM – Allows for normal electric trim motor cutout protections
OVRD - Electric trim can be used regardless of control column position
LOCK FAIL Light (amber) –
Flight Deck Door Lock selector in AUTO and door lock has failed or Flight
Deck Access System switch is OFF.
Auto Unlock (AUTO UNLK) Light (amber) –
Correct emergency access code entered in keypad.
AUTO UNLK light flashes and continuous chime sounds before timer
expires and door unlocks.
Flight Deck Door (FLT DK DOOR) Lock Selector
Spring loaded to AUTO. Selector must be pushed in to rotate from AUTO to
UNLKD.
Selector must not be pushed in to rotate from AUTO to DENY.
UNLKD – door unlocked while selector in UNLKD.
AUTO – door locked. Allows door to unlock after entry of emergency access
code and expiration of timer, unless Crew
takes action.
DENY – rejects keypad entry request and prevents
STANDBY HYD Lights
STANDBY HYDRAULIC LOW QUANTITY Light
STANDBY HYDRAULIC LOW PRESSURE Light
STBY RUD ON Light
STANDBY HYDRAULIC LOW QUANTITY Light
- indicates low quantity in the standby hydraulic reservoir (Less than 50%?)
- always armed
STANDBY HYDRAULIC LOW PRESSURE Light
- indicates output pressure of standby pump is low
- armed ONLY when standby pump operation has been selected or automatic standby function is activated.
STBY RUD ON Light
- indicates the standby rudder system is commanded ON to pressurize the Standby Ruddder PC
FLIGHT CONTROL Switches
STBY RUD
OFF
ON
STBY RUD
- Activates Sandby hydrauliic system pump
- Opens standby rudder shutoff valve to pressurize standby rudder PCU
OFF
-Closes Flight Control Shutoff Valve isolating ailerons, rudder, and elevator from associated hydraulic pressure.
ON (guarded position)
-Normal operating position.
Flight SPOILER Switches (Maint. Only)
ON
OFF
ON (guarded position) – normal operating position.
OFF – closes the respective flight spoiler shutoff valve.
Flight Control LOW PRESSURE Lights
What does it indicate?
When is it deactivated?
Indicates low HYD A or HYD B system pressure to ailerons, elevator, and rudder.
Deactivated when assocaited FLT CONTROL switch is positiioned to STBY RUD
AND standby rudder shutoff valve opens.
